/**
 * ChordSpheres — DJI-Inspired Design System
 *
 * Dark-first design tokens inspired by DJI.com's cinematic aesthetic.
 * All classes use BEM notation with the .cs- prefix.
 *
 * Color palette (dark-first):
 *   Primary:    #0077FF (electric blue)
 *   Accent:     #FF6B35 (bright orange CTA)
 *   Background: #0d0d0f (near-black)
 *   Surface:    #1a1a1e (dark gray)
 *   Text:       #f0f0f2 (light on dark)
 *   Secondary:  #9a9aa0 (muted gray)
 *   Success:    #34D058
 *   Warning:    #FFB020
 *   Danger:     #FF4757
 */

/* ==========================================================================
   Accessibility
   ========================================================================== */

/* Skip navigation — hidden until focused via Tab */
.cs-skip-nav {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--cs-primary);
    color: var(--cs-text-on-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 8px 8px;
    font-weight: 600;
    font-size: 0.9rem;
    z-index: 10000;
    text-decoration: none;
    transition: top 0.15s ease;
}
.cs-skip-nav:focus {
    top: 0;
    outline: none;
}

.cs-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Universal keyboard focus indicator — visible on all interactive elements */
*:focus-visible {
    outline: 3px solid var(--cs-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* High-contrast mode (user preference via OS settings) */
@media (prefers-contrast: high) {
    :root {
        --cs-border: rgba(255, 255, 255, 0.3);
        --cs-border-strong: rgba(255, 255, 255, 0.5);
        --cs-text-secondary: #c0c0c4;
    }
    .cs-btn--outline { border-width: 2px; }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================================================
   CSS Custom Properties
   ========================================================================== */

:root {
    color-scheme: dark;

    /* --- Brand / Primary --- */
    --cs-primary: #0070EB;
    --cs-primary-hover: #0066DD;
    --cs-primary-text: #008FFF;
    --cs-primary-light: rgba(0, 119, 255, 0.12);
    --cs-accent: #FF6B35;
    --cs-accent-hover: #E55A2B;
    --cs-accent-light: rgba(255, 107, 53, 0.12);
    /* Spheres — semantic alias mapped to the brand blue so the
       Sphere balance pill, store cards, and ⊚ glyph all match the
       primary palette instead of the orange accent. */
    --cs-sphere:        #0070EB;
    --cs-sphere-hover:  #0066DD;
    --cs-sphere-light:  rgba(0, 112, 235, 0.12);
    --cs-gradient-primary: linear-gradient(135deg, #0077FF, #00C6FF);

    /* --- Surfaces & Backgrounds (dark-first) --- */
    --cs-bg: #0d0d0f;
    --cs-surface: #1a1a1e;
    --cs-surface-raised: #242428;
    --cs-overlay: rgba(0, 0, 0, 0.6);
    --cs-overlay-light: rgba(255, 255, 255, 0.06);
    --cs-header-bg: rgba(13, 13, 15, 0.92);

    /* --- Text (light on dark) --- */
    --cs-text: #f0f0f2;
    --cs-text-secondary: #9a9aa0;
    --cs-text-tertiary: #8E8E9C;
    --cs-text-on-primary: #ffffff;
    --cs-text-on-accent: #0d0d0f;
    --cs-text-on-dark: #ffffff;

    /* --- Borders --- */
    --cs-border: rgba(255, 255, 255, 0.08);
    --cs-border-strong: rgba(255, 255, 255, 0.16);

    /* --- Status Colors (bright on dark) --- */
    --cs-success: #34D058;
    --cs-success-hover: #2CBF4E;
    --cs-success-light: rgba(52, 208, 88, 0.12);
    --cs-success-text: #4AE070;
    --cs-warning: #FFB020;
    --cs-warning-light: rgba(255, 176, 32, 0.12);
    --cs-warning-text: #FFC04D;
    --cs-danger: #FF4757;
    --cs-danger-hover: #E63946;
    --cs-danger-light: rgba(255, 71, 87, 0.12);
    --cs-danger-text: #FF6B7A;
    --cs-info: #17C3F6;
    --cs-info-light: rgba(23, 195, 246, 0.12);
    --cs-info-text: #4DD4F7;

    /* --- Status Badges (bg/text pairs) --- */
    --cs-badge-success-bg: rgba(52, 208, 88, 0.15);
    --cs-badge-success-text: #4AE070;
    --cs-badge-warning-bg: rgba(255, 176, 32, 0.15);
    --cs-badge-warning-text: #FFC04D;
    --cs-badge-danger-bg: rgba(255, 71, 87, 0.15);
    --cs-badge-danger-text: #FF6B7A;
    --cs-badge-info-bg: rgba(23, 195, 246, 0.15);
    --cs-badge-info-text: #4DD4F7;
    --cs-badge-neutral-bg: rgba(255, 255, 255, 0.06);
    --cs-badge-neutral-text: #9a9aa0;

    /* --- Border Radius (less rounded than Apple) --- */
    --cs-radius-xs: 4px;
    --cs-radius-sm: 6px;
    --cs-radius: 8px;
    --cs-radius-lg: 12px;
    --cs-radius-xl: 16px;
    --cs-radius-full: 980px;

    /* --- Shadows (subtle on dark) --- */
    --cs-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --cs-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    --cs-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
    --cs-shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.5);
    --cs-shadow-modal: 0 24px 70px rgba(0, 0, 0, 0.6);

    /* --- Typography --- */
    --cs-font: 'Helvetica Neue', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    --cs-font-mono: ui-monospace, 'Cascadia Code', 'Fira Code', SFMono-Regular, Consolas, monospace;

    /* --- Motion & Layout --- */
    --cs-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --cs-transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --cs-nav-height: 60px;
}

/* ==========================================================================
   Light Mode (alternate — DJI default is dark)
   ========================================================================== */

[data-theme="light"] {
    color-scheme: light;
    --cs-bg: #f5f5f7;
    --cs-surface: #ffffff;
    --cs-surface-raised: #ffffff;
    --cs-overlay: rgba(0, 0, 0, 0.4);
    --cs-overlay-light: rgba(0, 0, 0, 0.04);
    --cs-header-bg: rgba(245, 245, 247, 0.9);
    --cs-text: #1d1d1f;
    --cs-text-secondary: #6e6e73;
    --cs-text-tertiary: #6e6e73;
    --cs-text-on-primary: #ffffff;
    --cs-border: rgba(0, 0, 0, 0.08);
    --cs-border-strong: rgba(0, 0, 0, 0.15);
    --cs-primary: #0066DD;
    --cs-primary-hover: #0055BB;
    --cs-primary-text: #0066DD;
    --cs-primary-light: rgba(0, 102, 221, 0.08);
    /* WCAG AA fix: accent darkened from #E55A2B (3.31:1 on bg) to #BB4614 (4.82:1 on bg).
       text-on-accent switched to white since dark text on this darker orange is only 3.51:1. */
    --cs-accent: #BB4614;
    --cs-accent-hover: #A33C10;
    --cs-accent-light: rgba(187, 70, 20, 0.08);
    --cs-text-on-accent: #ffffff;
    --cs-gradient-primary: linear-gradient(135deg, #0066DD, #00A8E8);
    --cs-success: #28A745;
    --cs-success-hover: #218838;
    --cs-success-light: rgba(40, 167, 69, 0.08);
    --cs-success-text: #1E7E34;
    --cs-warning: #E8A838;
    --cs-warning-light: rgba(232, 168, 56, 0.08);
    --cs-warning-text: #8B6419;
    --cs-danger: #DC3545;
    --cs-danger-hover: #C82333;
    --cs-danger-light: rgba(220, 53, 69, 0.08);
    --cs-danger-text: #B21F2D;
    --cs-info: #17A2B8;
    --cs-info-light: rgba(23, 162, 184, 0.08);
    --cs-info-text: #117A8B;
    --cs-badge-success-bg: #E8F5EB;
    --cs-badge-success-text: #1E7E34;
    --cs-badge-warning-bg: #FFF3E0;
    --cs-badge-warning-text: #8B6419;
    --cs-badge-danger-bg: #FDECEA;
    --cs-badge-danger-text: #B21F2D;
    --cs-badge-info-bg: #E0F2F7;
    --cs-badge-info-text: #0F6E7D;
    --cs-badge-neutral-bg: #F0F0F2;
    --cs-badge-neutral-text: #6c6c71;
    --cs-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --cs-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    --cs-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
    --cs-shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.12);
    --cs-shadow-modal: 0 24px 70px rgba(0, 0, 0, 0.2);
}

/* Dark mode — same as :root (for explicit dark toggle compatibility) */
[data-theme="dark"] {
    color-scheme: dark;
    /* All tokens inherited from :root — dark is the default */
}

/* Auto mode: follows OS preference. Default (dark) already set on :root.
   Only override to light when OS prefers light. */
@media (prefers-color-scheme: light) {
    [data-theme="auto"] {
        color-scheme: light;
        --cs-bg: #f5f5f7;
        --cs-surface: #ffffff;
        --cs-surface-raised: #ffffff;
        --cs-overlay: rgba(0, 0, 0, 0.4);
        --cs-overlay-light: rgba(0, 0, 0, 0.04);
        --cs-header-bg: rgba(245, 245, 247, 0.9);
        --cs-text: #1d1d1f;
        --cs-text-secondary: #6e6e73;
        --cs-text-tertiary: #6e6e73;
        --cs-text-on-primary: #ffffff;
        --cs-border: rgba(0, 0, 0, 0.08);
        --cs-border-strong: rgba(0, 0, 0, 0.15);
        --cs-primary: #0066DD;
        --cs-primary-hover: #0055BB;
        --cs-primary-text: #0066DD;
        --cs-primary-light: rgba(0, 102, 221, 0.08);
        --cs-accent: #BB4614;
        --cs-accent-hover: #A33C10;
        --cs-accent-light: rgba(187, 70, 20, 0.08);
        --cs-text-on-accent: #ffffff;
        --cs-gradient-primary: linear-gradient(135deg, #0066DD, #00A8E8);
        --cs-success: #28A745;
        --cs-success-hover: #218838;
        --cs-success-light: rgba(40, 167, 69, 0.08);
        --cs-success-text: #1E7E34;
        --cs-warning: #E8A838;
        --cs-warning-light: rgba(232, 168, 56, 0.08);
        --cs-warning-text: #946B1D;
        --cs-danger: #DC3545;
        --cs-danger-hover: #C82333;
        --cs-danger-light: rgba(220, 53, 69, 0.08);
        --cs-danger-text: #B21F2D;
        --cs-info: #17A2B8;
        --cs-info-light: rgba(23, 162, 184, 0.08);
        --cs-info-text: #117A8B;
        --cs-badge-success-bg: #E8F5EB;
        --cs-badge-success-text: #1E7E34;
        --cs-badge-warning-bg: #FFF3E0;
        --cs-badge-warning-text: #8B6419;
        --cs-badge-danger-bg: #FDECEA;
        --cs-badge-danger-text: #B21F2D;
        --cs-badge-info-bg: #E0F2F7;
        --cs-badge-info-text: #0F6E7D;
        --cs-badge-neutral-bg: #F0F0F2;
        --cs-badge-neutral-text: #6c6c71;
        --cs-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
        --cs-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        --cs-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
        --cs-shadow-xl: 0 16px 50px rgba(0, 0, 0, 0.12);
        --cs-shadow-modal: 0 24px 70px rgba(0, 0, 0, 0.2);
    }
}

/* Light mode overrides — card footers, neutral badges, and progress use
   black-based opacity since the background is white */
[data-theme="light"] .cs-card__footer,
[data-theme="light"] .cs-badge--neutral,
[data-theme="light"] .cs-badge--muted,
[data-theme="light"] .cs-progress {
    background: rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: light) {
    [data-theme="auto"] .cs-card__footer,
    [data-theme="auto"] .cs-badge--neutral,
    [data-theme="auto"] .cs-badge--muted,
    [data-theme="auto"] .cs-progress {
        background: rgba(0, 0, 0, 0.04);
    }
}

/* Light mode images — slight brightness boost is unnecessary; reset filter */
[data-theme="light"] img:not([src*=".svg"]) {
    filter: none;
}
@media (prefers-color-scheme: light) {
    [data-theme="auto"] img:not([src*=".svg"]) {
        filter: none;
    }
}

/* ==========================================================================
   Theme Toggle
   ========================================================================== */

.cs-theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: none;
    border: none;
    border-radius: var(--cs-radius-full);
    cursor: pointer;
    color: var(--cs-text-secondary);
    transition: background var(--cs-transition), color var(--cs-transition);
    padding: 0;
    flex-shrink: 0;
}

.cs-theme-toggle:hover {
    background: var(--cs-overlay-light);
    color: var(--cs-text);
}

.cs-theme-toggle svg {
    width: 18px;
    height: 18px;
}

.cs-theme-toggle--floating {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 100;
    background: var(--cs-surface);
    border: 1px solid var(--cs-border);
    box-shadow: var(--cs-shadow);
}

/* Show/hide sun vs moon icon based on theme.
   Default (dark): show sun icon (switch to light).
   Light mode: show moon icon (switch to dark). */
.cs-theme-toggle__sun { display: block; }
.cs-theme-toggle__moon { display: none; }

[data-theme="light"] .cs-theme-toggle__sun { display: none; }
[data-theme="light"] .cs-theme-toggle__moon { display: block; }

@media (prefers-color-scheme: light) {
    [data-theme="auto"] .cs-theme-toggle__sun { display: none; }
    [data-theme="auto"] .cs-theme-toggle__moon { display: block; }
}

/* ==========================================================================
   Reset
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
}

/* ==========================================================================
   Base Typography
   ========================================================================== */

.cs-body {
    font-family: var(--cs-font);
    font-size: 16px;
    line-height: 1.55;
    color: var(--cs-text);
    background: var(--cs-bg);
    color-scheme: dark;
    letter-spacing: -0.015em;
}

.cs-body--auth {
    background: var(--cs-bg);
}

/* Admin page container */
.cs-admin {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1rem;
}
.cs-admin__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
}
.cs-admin__title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--cs-text);
    margin: 0;
}

.cs-main {
    font-family: var(--cs-font);
    font-size: 16px;
    line-height: 1.55;
    color: var(--cs-text);
    background: var(--cs-bg);
    min-height: 100vh;
    letter-spacing: -0.015em;
}

h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    color: var(--cs-text);
    letter-spacing: -0.015em;
}

h1 { font-size: 3rem; font-weight: 700; line-height: 1.08; letter-spacing: -0.035em; }
h2 { font-size: 2rem; font-weight: 700; line-height: 1.15; letter-spacing: -0.025em; }
h3 { font-size: 1.35rem; font-weight: 600; line-height: 1.2; letter-spacing: -0.02em; }
h4 { font-size: 1.0625rem; font-weight: 600; line-height: 1.3; letter-spacing: -0.01em; }

/* ==========================================================================
   Layout
   ========================================================================== */

.cs-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 max(2rem, env(safe-area-inset-left));
}

.cs-container-narrow {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.cs-container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Dashboard-style sections (used by dashboard, studio, and any other
   page that wraps content in a centred "section with title" block).
   Previously these rules lived only inline on views/dashboard/index.php
   which is why the studio page — using the same class names — had no
   container width, no centring, and stretched edge-to-edge. */
.cs-dash-section {
    padding: 5.5rem 0;
}
.cs-dash-section--surface {
    background: var(--cs-surface);
}
.cs-dash-section__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}
.cs-dash-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
}
.cs-dash-section__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--cs-text);
    margin: 0 0 0.75rem;
    letter-spacing: -0.03em;
}
.cs-dash-section__desc {
    font-size: 1.125rem;
    color: var(--cs-text-secondary);
    margin: 0 0 3rem;
    max-width: 600px;
    line-height: 1.55;
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.cs-header {
    background: var(--cs-header-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--cs-border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--cs-nav-height);
    transition: background 0.3s ease, border-color 0.3s ease;
}

/* Scrolled state — slightly more opaque with stronger border */
.cs-header--scrolled {
    background: var(--cs-header-bg);
    border-bottom-color: var(--cs-border-strong);
    box-shadow: 0 1px 12px rgba(0, 0, 0, 0.15);
}

.cs-header__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.cs-header__left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.cs-header__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--cs-text);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    flex-shrink: 0;
}

.cs-header__logo img {
    height: 28px;
    width: auto;
}

.cs-header__logo-text {
    font-weight: 800;
    background: var(--cs-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cs-header__nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.cs-header__nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--cs-radius-sm);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--cs-text-secondary);
    text-decoration: none;
    transition: background var(--cs-transition), color var(--cs-transition);
    letter-spacing: -0.01em;
}

.cs-header__nav-link:hover {
    color: var(--cs-text);
    background: var(--cs-overlay-light);
}

.cs-header__nav-link--active {
    color: var(--cs-text);
    font-weight: 500;
}

.cs-header__nav-link--admin {
    color: var(--cs-text-secondary);
}

.cs-header__right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.cs-header__auth-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cs-header__user-menu {
    position: relative;
}

.cs-header__user-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    padding: 0.375rem 0.875rem;
    border-radius: var(--cs-radius-full);
    cursor: pointer;
    font-size: 0.9375rem;
    color: var(--cs-text);
    transition: background var(--cs-transition);
}

.cs-header__user-name {
    font-weight: 500;
    white-space: nowrap;
}

.cs-header__user-toggle:hover {
    background: var(--cs-overlay-light);
}

.cs-header__user-name {
    font-weight: 500;
}

.cs-header__chevron {
    font-size: 0.6rem;
    color: var(--cs-text-secondary);
    transition: transform var(--cs-transition);
}

.cs-header__dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    background: var(--cs-surface);
    border-radius: var(--cs-radius);
    box-shadow: var(--cs-shadow-xl);
    border: 1px solid var(--cs-border);
    min-width: 200px;
    padding: 0.375rem;
    z-index: 50;
    display: none;
    opacity: 0;
    transform: translateY(-4px) scale(0.98);
    transition: opacity 0.15s ease, transform 0.15s ease;
}

.cs-header__dropdown.cs-open {
    display: block;
    opacity: 1;
    transform: translateY(0) scale(1);
}

.cs-header__dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    color: var(--cs-text);
    text-decoration: none;
    border-radius: var(--cs-radius-xs);
    transition: background var(--cs-transition);
}

.cs-header__dropdown-item:hover {
    background: var(--cs-overlay-light);
}

.cs-header__dropdown-item--danger {
    color: var(--cs-danger);
}

.cs-header__dropdown-divider {
    height: 1px;
    background: var(--cs-border);
    margin: 0.25rem 0;
}

/* Admin nav submenu */
.cs-header__admin-menu {
    position: relative;
}

.cs-header__admin-menu > button {
    cursor: pointer;
    background: none;
    border: none;
}

.cs-header__dropdown--admin {
    left: 0;
    right: auto;
    min-width: 180px;
}

/* Mobile nav toggle */
.cs-nav-toggle,
.cs-header__nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--cs-text);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.375rem;
    line-height: 1;
    border-radius: var(--cs-radius-sm);
}

/* ==========================================================================
   Auth Pages
   ========================================================================== */

.cs-auth-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 3rem 1.5rem;
    background: var(--cs-bg);
    overflow: hidden;
    width: 100%;
}

.cs-auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.cs-auth-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    text-decoration: none;
    color: var(--cs-text);
}

.cs-auth-logo__title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    background: var(--cs-gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cs-auth-logo__subtitle {
    font-size: 0.9375rem;
    color: var(--cs-text-secondary);
    font-weight: 400;
}

.cs-auth-card {
    background: var(--cs-surface);
    border-radius: var(--cs-radius-xl);
    padding: 1.5rem 1.75rem;
    width: 100%;
    box-shadow: var(--cs-shadow-lg);
    border: 1px solid var(--cs-border);
}

.cs-auth-card__title {
    font-size: 1.35rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 1.25rem;
    letter-spacing: -0.024em;
}

.cs-auth-card__links {
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.875rem;
}

.cs-auth-card__link {
    color: var(--cs-primary-text);
    font-weight: 400;
    text-decoration: none;
}

.cs-auth-card__link:hover {
    text-decoration: underline;
}

.cs-auth-card__alt {
    text-align: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--cs-border);
    font-size: 0.875rem;
    color: var(--cs-text-secondary);
}

.cs-auth-card__alt a {
    color: var(--cs-primary-text);
}

.cs-auth-card__alt a:hover {
    text-decoration: underline;
}

/* OAuth / Google Sign-In Buttons */
.cs-oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    margin-bottom: 1.25rem;
}

.cs-btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.6875rem 1rem;
    background: var(--cs-surface-raised);
    border: 1px solid var(--cs-border-strong);
    border-radius: var(--cs-radius);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--cs-text);
    text-decoration: none;
    cursor: pointer;
    transition: background var(--cs-transition), border-color var(--cs-transition), box-shadow var(--cs-transition);
    font-family: inherit;
    letter-spacing: -0.01em;
}

.cs-btn-google:hover {
    background: var(--cs-overlay-light);
    border-color: var(--cs-primary);
    box-shadow: 0 0 0 3px var(--cs-primary-light);
}

.cs-btn-google__icon {
    flex-shrink: 0;
}

.cs-btn-google--edu {
    background: transparent;
    border-color: var(--cs-border);
}

.cs-btn-google--edu:hover {
    background: var(--cs-overlay-light);
    border-color: var(--cs-info);
    box-shadow: 0 0 0 3px var(--cs-info-light);
}

/* "or" divider between OAuth and email form */
.cs-auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
    color: var(--cs-text-tertiary);
    font-size: 0.8125rem;
}

.cs-auth-divider::before,
.cs-auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--cs-border);
}

/* Light mode overrides for Google button */
[data-theme="light"] .cs-btn-google {
    background: #ffffff;
    border-color: #dadce0;
    color: #3c4043;
}

[data-theme="light"] .cs-btn-google:hover {
    background: #f8f9fa;
    border-color: var(--cs-primary);
}

[data-theme="light"] .cs-btn-google--edu {
    background: #ffffff;
    border-color: #dadce0;
}

.cs-auth-footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.8125rem;
    color: var(--cs-text-tertiary);
}

/* Tab switcher (Sign In / Create Account) */
.cs-auth-tabs {
    position: relative;
    display: flex;
    align-items: stretch;
    width: 100%;
    max-width: 280px;
    margin: 0 auto 1rem;
    padding: 4px;
    background: var(--cs-surface-raised);
    border: 1px solid var(--cs-border);
    border-radius: 999px;
}

.cs-auth-tab {
    flex: 1;
    position: relative;
    z-index: 2;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 0;
    border-radius: 999px;
    font: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cs-text-secondary);
    cursor: pointer;
    transition: color 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    -webkit-appearance: none;
}

.cs-auth-tab:focus,
.cs-auth-tab:focus-visible,
.cs-auth-tab:active {
    outline: none;
    background: transparent;
    box-shadow: none;
}

.cs-auth-tab--active {
    color: #fff;
}

/* While the tab-switch animation is running, freeze the entire tab bar —
   no hover/focus, no pointer interaction — so nothing visually reacts
   to the click except the sphere wipe itself. */
.cs-auth-tabs--locked {
    pointer-events: none;
}

.cs-auth-tabs__indicator {
    position: absolute;
    top: 4px;
    left: 4px;
    width: calc(50% - 4px);
    height: calc(100% - 8px);
    background: var(--cs-primary);
    border-radius: 999px;
    z-index: 1;
    transition: left 0.35s cubic-bezier(0.4, 0, 0.15, 1);
}

.cs-auth-tabs__indicator--right {
    left: 50%;
}

/* Panels — only the active one is visible */
.cs-auth-panel {
    display: none;
    width: 100%;
    max-width: 460px;
    margin: 0 auto;
}

.cs-auth-panel--active {
    display: block;
}

/* ==========================================================================
   Forms
   ========================================================================== */

.cs-form {
    width: 100%;
}

.cs-form__group {
    margin-bottom: 1.25rem;
}

.cs-form__label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cs-text);
    margin-bottom: 0.375rem;
}

.cs-form__input,
.cs-form__textarea,
.cs-form__select,
/* Legacy flat-name support */
.cs-input,
.cs-textarea,
.cs-select {
    display: block;
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 1rem;
    font-family: inherit;
    color: var(--cs-text);
    background: var(--cs-surface);
    border: 1px solid var(--cs-border-strong);
    border-radius: var(--cs-radius-sm);
    transition: border-color var(--cs-transition), box-shadow var(--cs-transition);
    outline: none;
    letter-spacing: -0.01em;
}

.cs-form__input:focus,
.cs-form__textarea:focus,
.cs-form__select:focus,
.cs-input:focus,
.cs-textarea:focus,
.cs-select:focus {
    border-color: var(--cs-primary);
    box-shadow: 0 0 0 3px var(--cs-primary-light);
}

.cs-form__input::placeholder,
.cs-form__textarea::placeholder,
.cs-input::placeholder,
.cs-textarea::placeholder {
    color: var(--cs-text-tertiary);
}

.cs-form__textarea,
.cs-textarea {
    resize: vertical;
    min-height: 100px;
}

.cs-form__select,
.cs-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2386868b' d='M6 8.5L1 3.5h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
    cursor: pointer;
}

.cs-form__input--error {
    border-color: var(--cs-danger);
}

.cs-form__input--error:focus {
    box-shadow: 0 0 0 3px var(--cs-danger-light);
}

.cs-form__help {
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
    margin-top: 0.25rem;
}

.cs-form__error {
    font-size: 0.8125rem;
    color: var(--cs-danger);
    margin-top: 0.25rem;
}

.cs-form__actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* Flat-name alias — same as .cs-form__actions */
.cs-form-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.cs-form__row,
.cs-form-row {
    display: flex;
    gap: 1rem;
}

.cs-form__row .cs-form__group,
.cs-form-row .cs-form__group {
    flex: 1;
}

.cs-form--inline,
.cs-inline-form {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
}

.cs-form--inline .cs-form__group,
.cs-inline-form .cs-form__group {
    margin-bottom: 0;
}

.cs-form__checkbox-group,
.cs-checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cs-form__checkbox,
.cs-checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--cs-primary);
    cursor: pointer;
    border-radius: 4px;
}

.cs-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--cs-text);
    margin-bottom: 0.375rem;
}

.cs-label-optional {
    font-weight: 400;
    color: var(--cs-text-secondary);
    font-size: 0.8rem;
}

/* ==========================================================================
   Alerts
   ========================================================================== */

.cs-alert {
    padding: 0.875rem 1.125rem;
    border-radius: var(--cs-radius);
    font-size: 0.9375rem;
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.cs-alert--error {
    background: var(--cs-danger-light);
    color: var(--cs-danger-text);
}

.cs-alert--success {
    background: var(--cs-success-light);
    color: var(--cs-success-text);
}

.cs-alert--warning {
    background: var(--cs-warning-light);
    color: var(--cs-warning-text);
}

.cs-alert--info {
    background: var(--cs-info-light);
    color: var(--cs-info-text);
}

.cs-alert__list {
    margin: 0.25rem 0 0;
    padding-left: 1.25rem;
}

.cs-alert__list li {
    margin-bottom: 0.125rem;
}

/* ==========================================================================
   Flash Messages
   ========================================================================== */

.cs-flash-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem 0;
}

.cs-flash {
    padding: 0.875rem 1.25rem;
    border-radius: var(--cs-radius);
    font-size: 0.9375rem;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    position: relative;
    animation: cs-flash-in 0.3s ease;
}

@keyframes cs-flash-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.cs-flash--success {
    background: var(--cs-success-light);
    color: var(--cs-success-text);
}

.cs-flash--error {
    background: var(--cs-danger-light);
    color: var(--cs-danger-text);
}

.cs-flash--info {
    background: var(--cs-info-light);
    color: var(--cs-info-text);
}

.cs-flash--warning {
    background: var(--cs-warning-light);
    color: var(--cs-warning-text);
}

/* Legacy flash classes (non-BEM) */
.cs-flash-success { background: var(--cs-success-light); color: var(--cs-success-text); }
.cs-flash-error { background: var(--cs-danger-light); color: var(--cs-danger-text); }
.cs-flash-info { background: var(--cs-info-light); color: var(--cs-info-text); }
.cs-flash-warning { background: var(--cs-warning-light); color: var(--cs-warning-text); }

.cs-flash__dismiss,
.cs-flash-dismiss {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    font-size: 1.125rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.5;
    line-height: 1;
    padding: 0.25rem;
    border-radius: var(--cs-radius-xs);
    transition: opacity var(--cs-transition);
}

.cs-flash__dismiss:hover,
.cs-flash-dismiss:hover {
    opacity: 0.85;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.cs-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.35rem;
    border: none;
    border-radius: var(--cs-radius);
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--cs-transition), opacity var(--cs-transition), transform 0.1s ease;
    user-select: none;
    text-decoration: none;
    line-height: 1.4;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.cs-btn:active {
    transform: scale(0.97);
}

.cs-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.cs-btn--disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
    transform: none;
}

.cs-btn--primary,
.cs-btn-primary {
    background: var(--cs-primary);
    color: var(--cs-text-on-primary);
}

.cs-btn--primary:hover:not(:disabled),
.cs-btn-primary:hover:not(:disabled) {
    background: var(--cs-primary-hover);
}

.cs-btn--secondary,
.cs-btn-secondary {
    background: var(--cs-overlay-light);
    color: var(--cs-text);
}

.cs-btn--secondary:hover:not(:disabled),
.cs-btn-secondary:hover:not(:disabled) {
    background: var(--cs-border-strong);
}

.cs-btn--danger,
.cs-btn-danger {
    background: var(--cs-danger);
    color: var(--cs-text-on-primary);
}

.cs-btn--danger:hover:not(:disabled),
.cs-btn-danger:hover:not(:disabled) {
    background: var(--cs-danger-hover);
}

.cs-btn--danger-outline {
    background: transparent;
    color: var(--cs-danger);
    border: 1px solid var(--cs-danger);
}

.cs-btn--danger-outline:hover:not(:disabled) {
    background: var(--cs-danger);
    color: var(--cs-text-on-primary);
}

.cs-btn--success {
    background: var(--cs-success);
    color: var(--cs-text-on-primary);
}

.cs-btn--success:hover:not(:disabled) {
    background: var(--cs-success-hover);
}

.cs-btn--outline,
.cs-btn-outline {
    background: transparent;
    border: 1px solid var(--cs-primary);
    color: var(--cs-primary-text);
}

.cs-btn--outline:hover:not(:disabled),
.cs-btn-outline:hover:not(:disabled) {
    background: var(--cs-primary-light);
}

.cs-btn--ghost,
.cs-btn-ghost {
    background: transparent;
    color: var(--cs-primary-text);
}

.cs-btn--ghost:hover:not(:disabled),
.cs-btn-ghost:hover:not(:disabled) {
    background: var(--cs-overlay-light);
}

.cs-btn--accent {
    background: var(--cs-accent);
    color: var(--cs-text-on-primary);
}

.cs-btn--accent:hover:not(:disabled) {
    background: var(--cs-accent-hover);
}

.cs-btn--xs,
.cs-btn-xs {
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
}

.cs-btn--sm,
.cs-btn-sm {
    padding: 0.3125rem 0.75rem;
    font-size: 0.8125rem;
}

.cs-btn--lg,
.cs-btn-lg {
    padding: 0.75rem 1.75rem;
    font-size: 1.0625rem;
}

.cs-btn--block,
.cs-btn-block {
    display: flex;
    width: 100%;
}

.cs-btn--full {
    display: flex;
    width: 100%;
    justify-content: center;
    text-align: center;
}

.cs-btn-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* ==========================================================================
   Cards
   ========================================================================== */

.cs-card {
    background: var(--cs-surface);
    border-radius: var(--cs-radius-lg);
    border: 1px solid var(--cs-border);
    overflow: hidden;
    transition: box-shadow var(--cs-transition), transform var(--cs-transition);
}

.cs-card:hover {
    box-shadow: var(--cs-shadow-lg);
    transform: translateY(-2px);
}

/* Link-card modifier — for <a> elements that are entire clickable cards */
.cs-card--link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.cs-card__header,
.cs-card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--cs-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cs-card__header h2,
.cs-card__header h3,
.cs-card-header h2,
.cs-card-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.cs-card__body,
.cs-card-body {
    padding: 1.5rem;
}

.cs-card__footer,
.cs-card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--cs-border);
    background: var(--cs-overlay-light);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

.cs-card__image,
.cs-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

/* ==========================================================================
   Badges
   ========================================================================== */

.cs-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: var(--cs-radius-full);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0;
}

/* BEM modifier badges */
.cs-badge--primary,
.cs-badge-primary {
    background: var(--cs-primary-light);
    color: var(--cs-primary-text);
}

.cs-badge--success,
.cs-badge-success {
    background: var(--cs-success-light);
    color: var(--cs-success-text);
}

.cs-badge--warning,
.cs-badge-warning {
    background: var(--cs-warning-light);
    color: var(--cs-warning-text);
}

.cs-badge--danger,
.cs-badge-danger {
    background: var(--cs-danger-light);
    color: var(--cs-danger-text);
}

.cs-badge--info,
.cs-badge-info {
    background: var(--cs-info-light);
    color: var(--cs-info-text);
}

.cs-badge--neutral,
.cs-badge-neutral {
    background: var(--cs-badge-neutral-bg);
    color: var(--cs-badge-neutral-text);
}

.cs-badge--muted {
    background: var(--cs-badge-neutral-bg);
    color: var(--cs-badge-neutral-text);
}

.cs-badge--free,
.cs-badge-free {
    background: var(--cs-success-light);
    color: var(--cs-success-text);
    font-weight: 600;
}

/* Difficulty badges */
.cs-badge--beginner {
    background: var(--cs-success-light);
    color: var(--cs-success-text);
}

.cs-badge--intermediate {
    background: var(--cs-warning-light);
    color: var(--cs-warning-text);
}

.cs-badge--advanced {
    background: var(--cs-danger-light);
    color: var(--cs-danger-text);
}

/* Legacy data-attribute badges */
.cs-badge-difficulty[data-level="beginner"] {
    background: var(--cs-success-light);
    color: var(--cs-success-text);
}

.cs-badge-difficulty[data-level="intermediate"] {
    background: var(--cs-warning-light);
    color: var(--cs-warning-text);
}

.cs-badge-difficulty[data-level="advanced"] {
    background: var(--cs-danger-light);
    color: var(--cs-danger-text);
}

/* ==========================================================================
   Progress Bars
   ========================================================================== */

.cs-progress {
    width: 100%;
    height: 6px;
    background: var(--cs-overlay-light);
    border-radius: var(--cs-radius-full);
    overflow: hidden;
}

.cs-progress__bar {
    height: 100%;
    border-radius: var(--cs-radius-full);
    transition: width 0.5s ease;
}

.cs-progress__fill {
    height: 100%;
    border-radius: var(--cs-radius-full);
    background: var(--cs-primary);
    transition: width 0.5s ease;
}

/* Legacy */
.cs-progress-bar {
    height: 100%;
    border-radius: var(--cs-radius-full);
    background: var(--cs-primary);
    transition: width 0.5s ease;
}

.cs-progress--lg,
.cs-progress-lg {
    height: 10px;
}

.cs-progress--inline {
    display: inline-flex;
    width: auto;
}

.cs-progress__text {
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
    margin-top: 0.25rem;
}

.cs-progress__label,
.cs-progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.375rem;
    font-size: 0.8125rem;
}

.cs-progress-label-text {
    color: var(--cs-text-secondary);
}

.cs-progress-label-value {
    font-weight: 600;
    color: var(--cs-text);
}

/* ==========================================================================
   Stats Row / Dashboard
   ========================================================================== */

.cs-dashboard {
    padding: 2rem 0 3rem;
    max-width: 1120px;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.cs-dashboard__header {
    margin-bottom: 2rem;
}

.cs-dashboard__title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.028em;
    margin: 0;
}

.cs-dashboard__subtitle {
    color: var(--cs-text-secondary);
    font-size: 1.0625rem;
    margin-top: 0.25rem;
}

.cs-dashboard__section {
    margin-bottom: 2.5rem;
}

.cs-dashboard__section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    letter-spacing: -0.025em;
}

.cs-stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.cs-stat-card {
    background: var(--cs-surface);
    border-radius: var(--cs-radius-lg);
    padding: 1.25rem 1.5rem;
    border: 1px solid var(--cs-border);
    text-align: center;
    transition: box-shadow var(--cs-transition), transform var(--cs-transition);
}

.cs-stat-card:hover {
    box-shadow: var(--cs-shadow);
    transform: translateY(-1px);
}

.cs-stat-card__icon {
    width: 40px;
    height: 40px;
    border-radius: var(--cs-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    background: var(--cs-primary-light);
    color: var(--cs-primary-text);
}

.cs-stat-card__icon--success {
    background: var(--cs-success-light);
    color: var(--cs-success);
}

.cs-stat-card__icon--warning {
    background: var(--cs-warning-light);
    color: var(--cs-warning);
}

.cs-stat-card__icon--info {
    background: var(--cs-info-light);
    color: var(--cs-info);
}

.cs-stat-card__body {
    display: flex;
    flex-direction: column;
}

.cs-stat-card__value,
.cs-stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--cs-text);
    line-height: 1.15;
    letter-spacing: -0.028em;
}

.cs-stat-card__label,
.cs-stat-label {
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
    margin-top: 0.125rem;
}

.cs-stat-card--danger {
    border-color: var(--cs-danger);
    background: color-mix(in srgb, var(--cs-danger) 5%, var(--cs-surface));
}

.cs-stat-card--danger .cs-stat-card__value {
    color: var(--cs-danger);
}

.cs-stat-card--success {
    border-color: var(--cs-success);
    background: color-mix(in srgb, var(--cs-success) 5%, var(--cs-surface));
}

.cs-stat-card--success .cs-stat-card__value {
    color: var(--cs-success);
}

/* Legacy stat icon colors */
.cs-stat-icon { width: 36px; height: 36px; border-radius: var(--cs-radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.125rem; margin-bottom: 0.75rem; }
.cs-stat-icon-orange { background: var(--cs-warning-light); color: var(--cs-warning); }
.cs-stat-icon-gold { background: var(--cs-warning-light); color: var(--cs-warning); }
.cs-stat-icon-green { background: var(--cs-success-light); color: var(--cs-success); }
.cs-stat-icon-blue { background: var(--cs-primary-light); color: var(--cs-primary-text); }

/* Activity feed */
.cs-activity-feed {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cs-activity-feed__item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--cs-border);
}

.cs-activity-feed__item:last-child {
    border-bottom: none;
}

.cs-activity-feed__icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--cs-primary-light);
    color: var(--cs-primary-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.cs-activity-feed__content {
    flex: 1;
    min-width: 0;
    font-size: 0.9375rem;
    color: var(--cs-text);
    line-height: 1.4;
}

.cs-activity-feed__name {
    font-weight: 500;
}

.cs-activity-feed__text {
    font-size: 0.9375rem;
    color: var(--cs-text);
    line-height: 1.4;
}

.cs-activity-feed__time {
    font-size: 0.8125rem;
    color: var(--cs-text-tertiary);
    margin-top: 0.125rem;
}

/* Quick actions */
.cs-quick-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

/* ==========================================================================
   Course Cards & Grid
   ========================================================================== */

.cs-courses {
    padding: 3.5rem 0 5rem;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

.cs-courses__header {
    margin-bottom: 3rem;
}

.cs-courses__label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--cs-primary-text);
    margin-bottom: 0.75rem;
}

.cs-courses__title {
    font-size: 2.75rem;
    font-weight: 700;
    letter-spacing: -0.035em;
    margin: 0 0 0.75rem;
}

.cs-courses__subtitle {
    font-size: 1.125rem;
    color: var(--cs-text-secondary);
    margin: 0;
    max-width: 560px;
    line-height: 1.5;
}

.cs-course-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.cs-course-grid--2col {
    grid-template-columns: repeat(2, 1fr);
}

.cs-course-grid--3col {
    grid-template-columns: repeat(3, 1fr);
}

.cs-course-card {
    background: var(--cs-surface);
    border-radius: var(--cs-radius-lg);
    border: 1px solid var(--cs-border);
    overflow: hidden;
    transition: box-shadow var(--cs-transition), transform var(--cs-transition);
    text-decoration: none;
    display: block;
    color: inherit;
}

.cs-course-card:hover {
    box-shadow: var(--cs-shadow-lg);
    transform: translateY(-4px);
}

.cs-course-card__thumb {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: var(--cs-gradient-primary);
}

.cs-course-card__thumb::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, transparent, rgba(13, 13, 15, 0.4));
    pointer-events: none;
}

.cs-course-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cs-course-card__placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Topic-based gradients for courses without thumbnails */
.cs-course-card__placeholder--web3 { background: linear-gradient(135deg, #1a1a40, #0077FF, #00C6FF); }
.cs-course-card__placeholder--painting { background: linear-gradient(135deg, #1a1a2e, #E55A2B, #FFB020); }
.cs-course-card__placeholder--art { background: linear-gradient(135deg, #1a1a2e, #8B5CF6, #EC4899); }
.cs-course-card__placeholder--music { background: linear-gradient(135deg, #1a1a2e, #059669, #34D058); }

.cs-course-card__body {
    padding: 1.25rem;
}

.cs-course-card__title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--cs-text);
    margin: 0 0 0.375rem;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.cs-course-card__meta {
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.cs-course-card__duration {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.cs-course-card__excerpt {
    font-size: 0.875rem;
    color: var(--cs-text-secondary);
    line-height: 1.45;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cs-course-card__footer {
    padding: 0.875rem 1.25rem;
    border-top: 1px solid var(--cs-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
}

/* Course detail */
.cs-course-detail {
    padding: 2rem 0;
    max-width: 1120px;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.cs-course-detail__header {
    margin-bottom: 2rem;
}

.cs-course-detail__title {
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    letter-spacing: -0.028em;
}

.cs-course-detail__meta {
    color: var(--cs-text-secondary);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.cs-course-detail__description {
    font-size: 1.0625rem;
    line-height: 1.5;
    color: var(--cs-text);
    margin-bottom: 2rem;
}

/* ==========================================================================
   Module & Lesson Lists
   ========================================================================== */

.cs-module-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cs-module {
    background: var(--cs-surface);
    border-radius: var(--cs-radius);
    border: 1px solid var(--cs-border);
    overflow: hidden;
    transition: box-shadow var(--cs-transition);
}

.cs-module:hover {
    box-shadow: var(--cs-shadow);
}

.cs-module__header {
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    background: transparent;
    border: none;
    width: 100%;
    text-align: left;
    font-family: inherit;
    border-left: 3px solid var(--cs-primary);
    transition: background var(--cs-transition);
}

.cs-module__header:hover {
    background: var(--cs-primary-light);
}

.cs-module__title-group {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.cs-module__chevron {
    color: var(--cs-text-tertiary);
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.cs-module--open .cs-module__chevron {
    transform: rotate(90deg);
}

.cs-module__title {
    font-size: 0.95rem;
    font-weight: 600;
    margin: 0;
    color: var(--cs-text);
    letter-spacing: -0.01em;
}

.cs-module__lesson-count {
    font-size: 0.78rem;
    color: var(--cs-text-tertiary);
    white-space: nowrap;
    font-weight: 500;
}

.cs-module__meta {
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
}

.cs-module__lessons {
    display: none;
    border-top: 1px solid var(--cs-border);
}

.cs-module--open .cs-module__lessons {
    display: block;
}

.cs-module__empty {
    padding: 1rem 1.25rem;
    color: var(--cs-text-tertiary);
    font-size: 0.85rem;
    margin: 0;
}

.cs-lesson-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cs-lesson-item {
    border-bottom: 1px solid var(--cs-border);
}

.cs-lesson-item:last-child {
    border-bottom: none;
}

.cs-lesson-item__link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1.5rem;
    text-decoration: none;
    color: var(--cs-text);
    transition: background var(--cs-transition);
}

.cs-lesson-item__link:hover {
    background: var(--cs-overlay-light);
}

.cs-lesson-item__link--locked {
    opacity: 0.5;
    pointer-events: none;
}

.cs-lesson-item__link--completed {
    color: var(--cs-text-secondary);
}

.cs-lesson-item__icon {
    width: 32px;
    height: 32px;
    border-radius: var(--cs-radius-sm, 8px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    flex-shrink: 0;
    background: var(--cs-primary-light);
    color: var(--cs-primary-text);
}

.cs-lesson-item__icon--completed {
    background: var(--cs-success-light);
    color: var(--cs-success);
}

.cs-lesson-item__title {
    font-size: 0.9375rem;
    font-weight: 500;
}

.cs-lesson-item__duration {
    font-size: 0.8125rem;
    color: var(--cs-text-tertiary);
    margin-left: auto;
}

/* Lesson viewer */
.cs-lesson {
    padding: 2rem 0;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.cs-lesson__header {
    margin-bottom: 2rem;
}

.cs-lesson__title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.028em;
    margin: 0 0 0.5rem;
}

.cs-lesson__meta {
    color: var(--cs-text-secondary);
    font-size: 0.875rem;
}

.cs-lesson__content {
    line-height: 1.6;
    font-size: 1.0625rem;
}

.cs-lesson__nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--cs-border);
    gap: 0.75rem;
}

/* Lesson prev/next buttons */
.cs-lesson__nav-btn {
    flex: 1;
    max-width: 48%;
    text-align: left;
    min-width: 0;
}
.cs-lesson__nav-btn--next { text-align: right; }

/* Allow the text span inside the nav button to shrink */
.cs-lesson__nav-btn > span {
    min-width: 0;
    flex: 1;
}

.cs-lesson__nav-label {
    display: block;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    opacity: 0.6;
    margin-bottom: 0.15rem;
    white-space: nowrap;
}

.cs-lesson__nav-title {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    font-size: 0.875rem;
}

/* Content blocks */
.cs-content-block {
    margin-bottom: 2rem;
}

.cs-content-block__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.cs-content-block__body {
    line-height: 1.6;
}

/* ==========================================================================
   Enrollment Card
   ========================================================================== */

.cs-enrollment-card {
    background: var(--cs-surface);
    border-radius: var(--cs-radius-lg);
    border: 1px solid var(--cs-border);
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: box-shadow var(--cs-transition);
}

.cs-enrollment-card:hover {
    box-shadow: var(--cs-shadow);
}

.cs-enrollment-thumb {
    width: 72px;
    height: 72px;
    border-radius: var(--cs-radius);
    object-fit: cover;
    flex-shrink: 0;
    background: var(--cs-gradient-primary);
}

.cs-enrollment-info {
    flex: 1;
    min-width: 0;
}

.cs-enrollment-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--cs-text);
    margin: 0 0 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cs-enrollment-meta {
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   Tables
   ========================================================================== */

.cs-table-wrapper,
.cs-table-wrap {
    overflow-x: auto;
    border-radius: var(--cs-radius-lg);
    border: 1px solid var(--cs-border);
    background: var(--cs-surface);
}

.cs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.cs-table thead th {
    background: var(--cs-overlay-light);
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 500;
    color: var(--cs-text-secondary);
    font-size: 0.8125rem;
    letter-spacing: 0;
    border-bottom: 1px solid var(--cs-border);
    white-space: nowrap;
}

.cs-table tbody td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--cs-border);
    vertical-align: middle;
    color: var(--cs-text);
}

.cs-table tbody tr:last-child td {
    border-bottom: none;
}

.cs-table tbody tr:hover {
    background: var(--cs-overlay-light);
}

.cs-table__actions,
.cs-table-actions {
    display: flex;
    gap: 0.5rem;
}

/* ==========================================================================
   Breadcrumbs
   ========================================================================== */

.cs-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    color: var(--cs-text-secondary);
    margin-bottom: 1rem;
    list-style: none;
    padding: 0;
    flex-wrap: wrap;
}

.cs-breadcrumb__item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.cs-breadcrumb__item + .cs-breadcrumb__item::before,
.cs-breadcrumb li + li::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-right: 1.5px solid var(--cs-text-tertiary);
    border-top: 1.5px solid var(--cs-text-tertiary);
    transform: rotate(45deg);
    margin-right: 0.125rem;
}

.cs-breadcrumb a,
.cs-breadcrumb__link {
    color: var(--cs-primary-text);
    text-decoration: none;
}

.cs-breadcrumb a:hover,
.cs-breadcrumb__link:hover {
    text-decoration: underline;
}

.cs-breadcrumb__item--current,
.cs-breadcrumb-current {
    color: var(--cs-text);
    font-weight: 500;
}

/* ==========================================================================
   Empty States
   ========================================================================== */

.cs-empty-state,
.cs-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--cs-text-secondary);
}

.cs-empty-state__icon,
.cs-empty-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.35;
}

.cs-empty-state__text,
.cs-empty-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--cs-text);
    margin-bottom: 0.375rem;
}

.cs-empty-state__subtext,
.cs-empty-text {
    font-size: 0.9375rem;
    color: var(--cs-text-secondary);
    margin-bottom: 1.5rem;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.45;
}

.cs-empty-state--compact,
.cs-empty-state--sm {
    padding: 2rem 1rem;
}

.cs-empty-state--compact .cs-empty-state__text {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.cs-empty-state--compact .cs-empty-state__subtext {
    font-size: 0.8rem;
}

/* Title sub-element — smaller heading style inside an empty state */
.cs-empty-state__title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--cs-text);
    margin: 0 0 0.5rem;
}

/* CTA button inside empty states */
.cs-empty-state .cs-btn {
    margin-top: 1rem;
}

/* ==========================================================================
   Page Headers
   ========================================================================== */

.cs-page-header {
    padding: 3rem 0 1.5rem;
    margin-bottom: 2rem;
}

.cs-page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.035em;
}

.cs-page-header p {
    color: var(--cs-text-secondary);
    margin: 0;
    font-size: 1.125rem;
    line-height: 1.5;
}

.cs-section {
    margin-bottom: 2.5rem;
}

.cs-section-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--cs-border);
    letter-spacing: -0.015em;
}

/* ==========================================================================
   Grid System
   ========================================================================== */

.cs-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.cs-grid-2 {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(2, 1fr);
}

.cs-grid-3 {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(3, 1fr);
}

.cs-grid-4 {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: repeat(4, 1fr);
}

.cs-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.cs-detail-grid__label {
    font-size: 0.875rem;
    color: var(--cs-text-secondary);
}

.cs-detail-grid__value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--cs-text);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.cs-footer {
    background: var(--cs-surface);
    border-top: 1px solid var(--cs-border);
    color: var(--cs-text-secondary);
    font-size: 0.8125rem;
}

.cs-footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.cs-footer__top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    padding: 3.5rem 0;
}

.cs-footer__brand { display: flex; flex-direction: column; gap: 0.5rem; }
.cs-footer__logo { font-size: 1.25rem; font-weight: 800; color: var(--cs-text); letter-spacing: -0.02em; background: var(--cs-gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.cs-footer__tagline { font-size: 0.875rem; color: var(--cs-text-secondary); margin: 0; line-height: 1.5; max-width: 280px; }

.cs-footer__social {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.cs-footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cs-overlay-light);
    color: var(--cs-text-secondary);
    transition: background var(--cs-transition), color var(--cs-transition);
}

.cs-footer__social-link:hover {
    background: var(--cs-primary-light);
    color: var(--cs-primary-text);
}

.cs-footer__social-link svg {
    width: 16px;
    height: 16px;
}

.cs-footer__col-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--cs-text);
    margin: 0 0 1rem;
}

.cs-footer__links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.cs-footer__links a {
    color: var(--cs-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--cs-transition);
}

.cs-footer__links a:hover {
    color: var(--cs-text);
}

.cs-footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 0;
    border-top: 1px solid var(--cs-border);
}

.cs-footer__legal { text-align: right; }

.cs-footer .cs-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.cs-footer__copyright {
    color: var(--cs-text-tertiary);
    margin: 0;
}

.cs-footer__powered {
    color: var(--cs-text-tertiary);
}

.cs-footer a {
    color: var(--cs-text-secondary);
    text-decoration: none;
}

.cs-footer a:hover {
    color: var(--cs-primary-text);
}

.cs-footer-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.cs-footer__bottom-links {
    display: flex;
    gap: 1.5rem;
}

.cs-footer__bottom-links a {
    color: var(--cs-text-tertiary);
    font-size: 0.8125rem;
    transition: color var(--cs-transition);
}

.cs-footer__bottom-links a:hover {
    color: var(--cs-text-secondary);
}

/* ==========================================================================
   Sidebar Layout
   ========================================================================== */

.cs-layout-sidebar {
    display: flex;
    min-height: calc(100vh - var(--cs-nav-height));
}

.cs-sidebar {
    width: 250px;
    background: var(--cs-surface);
    border-right: 1px solid var(--cs-border);
    padding: 1.25rem 0;
    flex-shrink: 0;
}

.cs-sidebar-section {
    margin-bottom: 1.5rem;
}

.cs-sidebar-label {
    display: block;
    padding: 0 1.25rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--cs-text-tertiary);
    margin-bottom: 0.375rem;
}

.cs-sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 1.25rem;
    color: var(--cs-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: background var(--cs-transition), color var(--cs-transition);
    border-left: 2px solid transparent;
}

.cs-sidebar-link:hover {
    background: var(--cs-overlay-light);
    color: var(--cs-text);
}

.cs-sidebar-link.cs-active {
    background: var(--cs-primary-light);
    color: var(--cs-primary-text);
    border-left-color: var(--cs-primary);
    font-weight: 500;
}

.cs-sidebar-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

/* ==========================================================================
   Links
   ========================================================================== */

.cs-link {
    color: var(--cs-primary-text);
    text-decoration: none;
    font-weight: 400;
}

.cs-link:hover {
    text-decoration: underline;
}

.cs-link--back {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.9375rem;
    color: var(--cs-primary-text);
    margin-bottom: 1rem;
}

.cs-link--back::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-left: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
}

/* ==========================================================================
   Avatar
   ========================================================================== */

.cs-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--cs-gradient-primary);
    color: var(--cs-text-on-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    font-weight: 600;
    flex-shrink: 0;
}

.cs-avatar-lg {
    width: 56px;
    height: 56px;
    font-size: 1.125rem;
}

/* ==========================================================================
   Dropdown
   ========================================================================== */

.cs-dropdown {
    position: relative;
}

.cs-dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: var(--cs-surface);
    border-radius: var(--cs-radius);
    box-shadow: var(--cs-shadow-xl);
    border: 1px solid var(--cs-border);
    min-width: 200px;
    padding: 0.375rem;
    z-index: 50;
    display: none;
}

.cs-dropdown-menu.cs-open {
    display: block;
}

.cs-dropdown-item {
    display: block;
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
    color: var(--cs-text);
    text-decoration: none;
    border-radius: var(--cs-radius-xs);
    transition: background var(--cs-transition);
}

.cs-dropdown-item:hover {
    background: var(--cs-overlay-light);
}

.cs-dropdown-divider {
    height: 1px;
    background: var(--cs-border);
    margin: 0.25rem 0;
}

/* ==========================================================================
   Prose / Content
   ========================================================================== */

.cs-prose {
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--cs-text);
}

.cs-prose p {
    margin-bottom: 1rem;
}

.cs-prose h2 {
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.cs-prose a {
    color: var(--cs-primary-text);
    text-decoration: underline;
}

.cs-prose ul, .cs-prose ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.cs-prose li {
    margin-bottom: 0.25rem;
}

.cs-code {
    font-family: 'SF Mono', 'Menlo', monospace;
    background: var(--cs-overlay-light);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.875em;
}

/* Video embeds */
.cs-video-embed {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    border-radius: var(--cs-radius);
    overflow: hidden;
    background: #000;
}

.cs-video-embed iframe,
.cs-video-embed__native {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Search */
.cs-search-bar {
    position: relative;
}

.cs-search-bar .cs-form__input,
.cs-search-bar .cs-input {
    padding-left: 2.5rem;
}

/* Language switcher */
.cs-lang-switcher {
    position: relative;
}

.cs-lang-switcher__toggle {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background: none;
    border: none;
    padding: 0.375rem 0.5rem;
    border-radius: var(--cs-radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--cs-text-secondary);
    transition: background var(--cs-transition);
}

.cs-lang-switcher__toggle:hover {
    background: var(--cs-overlay-light);
}

.cs-lang-switcher__menu {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    background: var(--cs-surface);
    border-radius: var(--cs-radius);
    box-shadow: var(--cs-shadow-xl);
    border: 1px solid var(--cs-border);
    min-width: 160px;
    padding: 0.375rem;
    z-index: 50;
    display: none;
}

.cs-lang-switcher__menu.cs-open {
    display: block;
}

.cs-lang-switcher__item {
    display: block;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    color: var(--cs-text);
    text-decoration: none;
    border-radius: var(--cs-radius-xs);
    transition: background var(--cs-transition);
}

.cs-lang-switcher__item:hover {
    background: var(--cs-overlay-light);
}

.cs-lang-switcher__item--active {
    color: var(--cs-primary-text);
    font-weight: 500;
}

/* Toggle button content: globe + current name + chevron */
.cs-lang-switcher__current {
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.cs-lang-switcher__chevron {
    transition: transform var(--cs-transition);
    flex-shrink: 0;
}
.cs-lang-switcher__toggle[aria-expanded="true"] .cs-lang-switcher__chevron {
    transform: rotate(180deg);
}

/* Item: flag + label + check */
.cs-lang-switcher__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.cs-lang-switcher__flag {
    font-size: 1rem;
    line-height: 1;
}
.cs-lang-switcher__label {
    flex: 1;
}
.cs-lang-switcher__check {
    color: var(--cs-primary-text);
    flex-shrink: 0;
}

/* Hide the locale name on narrow screens — keep the globe + flag dropdown */
@media (max-width: 640px) {
    .cs-lang-switcher__current { display: none; }
    .cs-lang-switcher__toggle { padding: 0.5rem; }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.cs-text-center { text-align: center; }
.cs-text-right { text-align: right; }
.cs-text-muted { color: var(--cs-text-secondary); }
.cs-text-small { font-size: 0.8125rem; }
.cs-text-primary { color: var(--cs-primary-text); }
.cs-text-success { color: var(--cs-success); }
.cs-text-danger { color: var(--cs-danger); }
.cs-text-warning { color: var(--cs-warning); }

.cs-mt-0 { margin-top: 0; }
.cs-mt-1 { margin-top: 0.5rem; }
.cs-mt-2 { margin-top: 1rem; }
.cs-mt-3 { margin-top: 1.5rem; }
.cs-mt-4 { margin-top: 2rem; }
.cs-mb-0 { margin-bottom: 0; }
.cs-mb-1 { margin-bottom: 0.5rem; }
.cs-mb-2 { margin-bottom: 1rem; }
.cs-mb-3 { margin-bottom: 1.5rem; }
.cs-mb-4 { margin-bottom: 2rem; }

.cs-flex { display: flex; }
.cs-flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.cs-flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.cs-gap-1 { gap: 0.5rem; }
.cs-gap-2 { gap: 1rem; }
.cs-gap-3 { gap: 1.5rem; }

.cs-hidden { display: none !important; }

.cs-truncate {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cs-divider {
    height: 1px;
    background: var(--cs-border);
    margin: 1.5rem 0;
    border: none;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
    :root {
        --cs-nav-height: 52px;
    }

    .cs-nav-toggle,
    .cs-header__nav-toggle {
        display: flex;
    }

    .cs-header__nav {
        display: none;
        position: absolute;
        top: var(--cs-nav-height);
        left: 0;
        right: 0;
        background: var(--cs-surface);
        flex-direction: column;
        padding: 0.75rem;
        border-bottom: 1px solid var(--cs-border);
    }

    .cs-header__nav.cs-nav-open {
        display: flex;
    }

    .cs-header__nav-link {
        padding: 0.625rem 0.875rem;
        width: 100%;
        border-radius: var(--cs-radius-sm);
    }

    .cs-course-grid,
    .cs-course-grid--2col,
    .cs-course-grid--3col,
    .cs-grid,
    .cs-grid-2,
    .cs-grid-3,
    .cs-grid-4 {
        grid-template-columns: 1fr;
    }

    .cs-stats-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .cs-form__row,
    .cs-form-row {
        flex-direction: column;
        gap: 0;
    }

    .cs-auth-card {
        padding: 1.75rem;
        border-radius: var(--cs-radius-lg);
    }

    .cs-page-header h1,
    .cs-dashboard__title {
        font-size: 1.75rem;
    }
    .cs-courses__title {
        font-size: 2rem;
    }
    .cs-courses {
        padding: 2.5rem 0 3rem;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .cs-enrollment-card {
        flex-direction: column;
        text-align: center;
    }

    .cs-layout-sidebar {
        flex-direction: column;
    }

    .cs-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--cs-border);
        padding: 0.75rem 0;
    }

    .cs-sidebar-content {
        padding: 1rem;
    }

    .cs-footer__top {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2.5rem 0;
        text-align: center;
    }
    .cs-footer__brand { align-items: center; }
    .cs-footer__tagline { max-width: none; }
    .cs-footer__social { justify-content: center; }
    .cs-footer__bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
    .cs-footer__bottom-links { justify-content: center; }

    .cs-table-wrapper {
        margin: 0 -1rem;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .cs-detail-grid {
        grid-template-columns: 1fr;
    }

    .cs-breadcrumb {
        font-size: 0.75rem;
    }

    /* Larger touch targets on mobile */
    .cs-btn {
        padding: 0.75rem 1.35rem;
        min-height: 44px;
    }
    .cs-btn--sm,
    .cs-btn-sm {
        padding: 0.5rem 0.875rem;
        min-height: 40px;
    }
    .cs-btn--lg,
    .cs-btn-lg {
        padding: 0.875rem 1.75rem;
        min-height: 48px;
    }

    .cs-auth-card {
        padding: 1.5rem;
    }

    /* Course filter dropdowns stack on mobile */
    .cs-courses__filter-row {
        flex-direction: column;
        align-items: stretch;
    }
    .cs-courses__filter-select {
        width: 100%;
    }

    /* Better table scroll indicator */
    .cs-table-wrapper {
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x proximity;
    }

    /* User menu touch-friendly */
    .cs-header__dropdown-item {
        padding: 0.75rem;
        min-height: 44px;
    }
    .cs-header__user-toggle {
        min-height: 44px;
    }
}

/* ==========================================================================
   Small Phones (< 480px) — iPhone SE, older devices
   ========================================================================== */

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }

    .cs-container,
    .cs-container-narrow {
        padding: 0 1rem;
    }

    .cs-courses {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .cs-courses__title { font-size: 1.75rem; }
    .cs-courses__subtitle { font-size: 1rem; }

    .cs-hero__title { font-size: 2.25rem; }
    .cs-hero__subtitle { font-size: 1rem; }
    .cs-hero__content { padding: 3rem 1rem; }
    .cs-hero__actions { flex-direction: column; align-items: center; }
    .cs-hero__actions .cs-btn { width: 100%; }

    .cs-auth-card {
        padding: 1.25rem;
        border-radius: var(--cs-radius-lg);
    }
    .cs-auth-card__title { font-size: 1.25rem; }
    .cs-auth-logo__title { font-size: 1.5rem; }
    .cs-oauth-buttons { gap: 0.5rem; }
    .cs-btn-google { padding: 0.625rem 0.75rem; font-size: 0.875rem; }

    .cs-goal-card { min-height: 200px; }
    .cs-goal-card__title { font-size: 1.2rem; }
    .cs-goal-card__desc { font-size: 0.8rem; }

    .cs-dash-stats__inner { padding: 1rem; }
    .cs-dash-section__inner { padding: 0 1rem; }

    .cs-card__body { padding: 1rem; }
    .cs-card__header { padding: 1rem; }

    .cs-footer__top { padding: 2rem 0; gap: 1.5rem; }
    .cs-footer__inner { padding: 0 1rem; }

    .cs-flash-container { padding: 0.75rem 1rem 0; }

    /* Stack button groups vertically */
    .cs-btn-group {
        flex-direction: column;
    }
    .cs-btn-group .cs-btn {
        width: 100%;
    }

    .cs-error-page { padding: 4rem 1rem 2rem; }
    .cs-error-page__code { font-size: 4.5rem; }
    .cs-error-page__title { font-size: 1.25rem; }
    .cs-error-page__actions { flex-direction: column; }
    .cs-error-page__actions .cs-btn { width: 100%; }
    .cs-error-page__links { gap: 1rem; }

    /* Header: compact layout for very narrow phones (320px) */
    .cs-header__left { gap: 0.5rem; }
    .cs-header__user-name { display: none; }
    .cs-sphere-indicator { display: none; }

    /* Lesson viewer: more breathing room at 320px */
    .cs-lesson { padding-left: 1rem; padding-right: 1rem; }

    /* Lesson navigation: stack vertically so titles don't overflow */
    .cs-lesson__nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    .cs-lesson__nav-btn {
        max-width: 100%;
        display: flex;
    }
    .cs-lesson__nav-btn--next {
        flex-direction: row-reverse;
        text-align: left;
    }

    /* Dashboard hero: avoid cramped section title at 320px */
    .cs-dash-section__title { font-size: 1.5rem; }

    /* Stat cards: single column at 320px — repeat(2,1fr) from the 768px rule
       leaves only ~80px content area per card, too tight for labels */
    .cs-stats-row {
        grid-template-columns: 1fr;
    }

    /* Quick actions: each button spans full width at 320px */
    .cs-quick-actions {
        flex-direction: column;
    }
    .cs-quick-actions .cs-btn {
        width: 100%;
        justify-content: center;
    }

    /* Activity feed: give the text content flex grow so it doesn't overflow */
    .cs-activity-feed__content {
        flex: 1;
        min-width: 0;
    }
    .cs-activity-feed__time {
        flex-shrink: 0;
        white-space: nowrap;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .cs-course-grid--3col,
    .cs-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .cs-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .cs-stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   Scroll Reveal Animations (DJI-style)
   ========================================================================== */

.cs-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.cs-reveal--visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered children — delay each child for cascade effect */
.cs-reveal-stagger > .cs-reveal:nth-child(1) { transition-delay: 0s; }
.cs-reveal-stagger > .cs-reveal:nth-child(2) { transition-delay: 0.1s; }
.cs-reveal-stagger > .cs-reveal:nth-child(3) { transition-delay: 0.2s; }
.cs-reveal-stagger > .cs-reveal:nth-child(4) { transition-delay: 0.3s; }
.cs-reveal-stagger > .cs-reveal:nth-child(5) { transition-delay: 0.4s; }
.cs-reveal-stagger > .cs-reveal:nth-child(6) { transition-delay: 0.5s; }

/* Slide-up variant (shorter distance) */
.cs-reveal--up {
    transform: translateY(24px);
}

/* Fade-only variant (no movement) */
.cs-reveal--fade {
    transform: none;
}

/* Scale-up variant */
.cs-reveal--scale {
    transform: scale(0.95);
}

.cs-reveal--scale.cs-reveal--visible {
    transform: scale(1);
}

/* Section label — DJI-style uppercase kicker above headlines */
.cs-section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--cs-primary-text);
    margin-bottom: 0.75rem;
}

/* Full-bleed section wrapper for alternating dark/light rhythm */
.cs-section-full {
    width: 100%;
    padding: 6rem 0;
}

.cs-section-full--surface {
    background: var(--cs-surface);
}

.cs-section-full--dark {
    background: var(--cs-bg);
}

.cs-section-full--alt {
    background: var(--cs-surface-raised);
}

.cs-section-full__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================================================
   Hero Sections (DJI-style full-bleed cinematic)
   ========================================================================== */

.cs-hero {
    position: relative;
    width: 100%;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: var(--cs-bg);
}

.cs-hero__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.cs-hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(13,13,15,0.75) 0%, rgba(13,13,15,0.95) 100%);
    z-index: 1;
}

.cs-hero__content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    padding: 5rem 2rem;
}

.cs-hero__label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--cs-accent);
    margin-bottom: 2.5rem;
}

.cs-hero__title {
    font-size: 4.5rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 2rem;
    letter-spacing: -0.035em;
    line-height: 1.05;
}

.cs-hero__subtitle {
    font-size: 1.375rem;
    font-weight: 300;
    color: rgba(255,255,255,0.65);
    margin: 0 auto 3rem;
    line-height: 1.5;
    max-width: 640px;
}

.cs-hero__actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .cs-hero { min-height: 450px; }
    .cs-hero__title { font-size: 2.75rem; }
    .cs-hero__subtitle { font-size: 1.0625rem; }
    .cs-hero__content { padding: 3rem 1.5rem; }
    .cs-section-full { padding: 4rem 0; }
}

/* ==========================================================================
   Goal/Outcome Cards (results-focused navigation)
   ========================================================================== */

.cs-goal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    padding: 0;
}

.cs-goal-card {
    position: relative;
    border-radius: var(--cs-radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: transform var(--cs-transition), box-shadow var(--cs-transition);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

.cs-goal-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--cs-shadow-lg);
}

.cs-goal-card__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.cs-goal-card:hover .cs-goal-card__bg {
    transform: scale(1.05);
}

.cs-goal-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,0.85) 100%);
    z-index: 1;
}

.cs-goal-card__content {
    position: relative;
    z-index: 2;
    padding: 1.5rem;
}

.cs-goal-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 0.5rem;
}

.cs-goal-card__desc {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
    margin: 0 0 1rem;
    line-height: 1.5;
}

.cs-goal-card__meta {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.cs-goal-card__tag {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.75rem;
    border-radius: var(--cs-radius-full);
    background: rgba(255,255,255,0.15);
    color: #ffffff;
    backdrop-filter: blur(4px);
}

@media (max-width: 640px) {
    .cs-goal-grid { grid-template-columns: 1fr; }
    .cs-goal-card { min-height: 220px; }
}

/* ==========================================================================
   Print
   ========================================================================== */

@media print {
    .cs-header,
    .cs-footer,
    .cs-sidebar,
    .cs-nav-toggle {
        display: none !important;
    }

    .cs-main {
        background: #fff;
    }

    .cs-card,
    .cs-course-card,
    .cs-stat-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ==========================================================================
   Sphere Balance Indicator (Header)
   ========================================================================== */

.cs-sphere-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.75rem;
    border-radius: var(--cs-radius-full, 980px);
    background: var(--cs-sphere-light);
    color: var(--cs-text);
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: background 0.2s, box-shadow 0.2s;
    margin-right: 0.5rem;
}

.cs-sphere-indicator:hover {
    background: var(--cs-sphere-light);
    box-shadow: 0 0 0 2px var(--cs-sphere-light);
}

.cs-sphere-indicator__icon {
    color: var(--cs-sphere);
    font-size: 1.05em;
    line-height: 1;
}

.cs-sphere-indicator__count {
    line-height: 1;
}

/* Low balance state — amber */
.cs-sphere-indicator--low {
    background: var(--cs-warning-light);
    color: var(--cs-warning-text);
}

.cs-sphere-indicator--low .cs-sphere-indicator__icon {
    color: var(--cs-warning);
}

/* Sphere cost label on action buttons */
.cs-sphere-cost {
    display: inline-flex;
    align-items: center;
    gap: 0.2rem;
    font-size: 0.78em;
    font-weight: 600;
    opacity: 0.85;
    margin-left: 0.35rem;
    color: var(--cs-accent);
}

/* Sphere confirmation modal */
.cs-sphere-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--cs-overlay);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.cs-sphere-modal.is-active {
    display: flex;
}

.cs-sphere-modal__box {
    background: var(--cs-surface-raised);
    border: 1px solid var(--cs-border);
    border-radius: var(--cs-radius-lg, 16px);
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--cs-shadow-modal);
}

.cs-sphere-modal__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
    color: var(--cs-text);
}

.cs-sphere-modal__text {
    font-size: 0.9rem;
    color: var(--cs-text-secondary);
    margin: 0 0 1.25rem;
    line-height: 1.5;
}

.cs-sphere-modal__actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.cs-sphere-modal__close {
    background: none;
    border: none;
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    cursor: pointer;
    color: var(--cs-text-secondary);
}

/* ==========================================================================
   Guided Tour (coachmark engine — see assets/js/core/tour.js)
   ========================================================================== */

.cs-tour {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none; /* overlay is transparent — clicks pass through except on tooltip */
}

/* The spotlight is a transparent rectangle placed OVER the target element,
   with a huge box-shadow spread that paints everything outside it dark. */
.cs-tour__spotlight {
    position: absolute;
    background: transparent;
    border-radius: 10px;
    box-shadow: 0 0 0 9999px rgba(8, 10, 14, 0.72);
    transition: top 0.25s ease, left 0.25s ease, width 0.25s ease, height 0.25s ease;
    pointer-events: none;
}

.cs-tour__tooltip {
    position: absolute;
    width: 320px;
    max-width: calc(100vw - 24px);
    background: var(--cs-surface, #17181c);
    color: var(--cs-text, #f0f0f2);
    border-radius: 14px;
    border: 1px solid var(--cs-border, rgba(255,255,255,0.08));
    padding: 1rem 1.1rem;
    box-shadow: 0 20px 48px rgba(0,0,0,0.4), 0 4px 12px rgba(0,0,0,0.25);
    pointer-events: auto;
    transition: top 0.22s ease, left 0.22s ease;
}

.cs-tour__tooltip--centered {
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%);
    width: 360px;
}

.cs-tour__title {
    margin: 0 0 0.5rem 0;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--cs-text, #f0f0f2);
}

.cs-tour__body {
    margin: 0 0 1rem 0;
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--cs-text-secondary, #c8c8cc);
}

.cs-tour__nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.cs-tour__progress {
    font-size: 0.75rem;
    color: var(--cs-text-muted, #8a8a90);
    margin: 0 auto; /* push to the middle between skip and next */
    letter-spacing: 0.03em;
}

.cs-tour__btn {
    appearance: none;
    border: 1px solid transparent;
    background: transparent;
    color: var(--cs-text, #f0f0f2);
    padding: 0.45rem 0.9rem;
    font: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}

.cs-tour__btn--ghost {
    color: var(--cs-text-secondary, #c8c8cc);
}
.cs-tour__btn--ghost:hover {
    background: rgba(255,255,255,0.06);
    color: var(--cs-text, #f0f0f2);
}

.cs-tour__btn--primary {
    background: var(--cs-accent, #FF6B35);
    color: #fff;
}
.cs-tour__btn--primary:hover {
    filter: brightness(1.08);
}

/* Arrow indicators to point at the anchored element */
.cs-tour__tooltip[data-placement="bottom"]::before,
.cs-tour__tooltip[data-placement="top"]::before,
.cs-tour__tooltip[data-placement="left"]::before,
.cs-tour__tooltip[data-placement="right"]::before {
    content: '';
    position: absolute;
    width: 12px; height: 12px;
    background: var(--cs-surface, #17181c);
    border: 1px solid var(--cs-border, rgba(255,255,255,0.08));
    transform: rotate(45deg);
}
.cs-tour__tooltip[data-placement="bottom"]::before {
    top: -7px; left: 50%; margin-left: -6px;
    border-right: none; border-bottom: none;
}
.cs-tour__tooltip[data-placement="top"]::before {
    bottom: -7px; left: 50%; margin-left: -6px;
    border-left: none; border-top: none;
}
.cs-tour__tooltip[data-placement="right"]::before {
    left: -7px; top: 50%; margin-top: -6px;
    border-right: none; border-top: none;
}
.cs-tour__tooltip[data-placement="left"]::before {
    right: -7px; top: 50%; margin-top: -6px;
    border-left: none; border-bottom: none;
}