/* ══════════════════════════════════════════════════════════════════════════
   DESOLVERSE UNIFIED PUBLIC DESIGN SYSTEM & TOKEN ARCHITECTURE
   File: /assets/css/main.css
   Brand: Single Canonical Brand Orange (#E87052)
   Divisions: Desolverse Labs & Desolverse Learn
   ══════════════════════════════════════════════════════════════════════════ */

/* ─── 1. CORE DESIGN TOKENS ─── */
:root {
    /* Brand Orange Accent Palette */
    --dv-accent: #e87052;
    --dv-accent-hover: #f0764e;
    --dv-accent-dark: #d45f40;
    --dv-accent-soft: rgba(232, 112, 82, 0.15);
    --dv-accent-glow: rgba(232, 112, 82, 0.25);
    --dv-accent-border: rgba(232, 112, 82, 0.4);

    /* Backgrounds & Canvas Layers */
    --dv-bg-0: #0b0b0d;               /* Deepest obsidian canvas */
    --dv-bg-1: #101012;               /* Standard page background */
    --dv-surface-1: #16161a;          /* Surface / Card level 1 */
    --dv-surface-2: #1e1e24;          /* Surface / Card level 2 / popovers */
    --dv-surface-hover: #24242c;      /* Surface interactive hover state */
    --dv-surface-glass: rgba(22, 22, 26, 0.75);

    /* Text & Legibility (Soft Refined Off-White, No Harsh Pure White) */
    --dv-text-1: #ececf0;             /* Primary soft off-white headings */
    --dv-text-2: #d4d7df;             /* Standard balanced body text */
    --dv-text-muted: #9aa5b3;         /* Secondary / helper text */
    --dv-text-dim: #656c78;           /* Disabled / subtle metadata */
    --dv-text-on-accent: #0b0b0d;     /* Crisp high-contrast dark text on brand orange buttons */

    /* Borders & Dividers */
    --dv-border: rgba(255, 255, 255, 0.08);
    --dv-border-strong: rgba(255, 255, 255, 0.14);
    --dv-border-glass: rgba(255, 255, 255, 0.12);

    /* Typography Scale */
    --dv-font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --dv-font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --dv-font-mono: 'IBM Plex Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Border Radii */
    --dv-radius-sm: 6px;
    --dv-radius-md: 10px;
    --dv-radius-lg: 16px;
    --dv-radius-xl: 24px;
    --dv-radius-pill: 9999px;

    /* Layout & Containers */
    --dv-container-max: 1200px;
    --dv-container-width: min(1180px, 92vw);

    /* Shadows (Clean & Subtle, No Glow) */
    --dv-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --dv-shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
    --dv-shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);

    /* Transitions */
    --dv-transition-fast: 0.15s ease;
    --dv-transition-base: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    --dv-transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── 1.1 LIGHT THEME TOKENS (LEARN / ACADEMY) ─── */
.dv-theme-learn,
[data-theme="learn"],
body.learn-page {
    /* Brand Accent remains unified Brand Orange */
    --dv-accent: #e87052;
    --dv-accent-hover: #d45f40;
    --dv-accent-soft: rgba(232, 112, 82, 0.1);
    --dv-accent-border: rgba(232, 112, 82, 0.35);

    /* Light Canvas & Card Backgrounds */
    --dv-bg-0: #f0f2f8;               /* Deep base light */
    --dv-bg-1: #f8f9fc;               /* Standard learn body bg */
    --dv-surface-1: #ffffff;          /* White card surface */
    --dv-surface-2: #f1f3f8;          /* Light pill / secondary surface */
    --dv-surface-hover: #fafbfe;      /* Card hover state */
    --dv-surface-glass: rgba(255, 255, 255, 0.88);

    /* Light Theme Typography */
    --dv-text-1: #12131a;             /* High contrast dark headings */
    --dv-text-2: #3b3d4d;             /* Body text */
    --dv-text-muted: #6f7287;         /* Secondary helper text */
    --dv-text-dim: #9aa0b6;           /* Subtle meta text */
    --dv-text-on-accent: #ffffff;

    /* Light Theme Borders */
    --dv-border: #e6e8f2;
    --dv-border-strong: #d2d6e6;
    --dv-border-glass: rgba(0, 0, 0, 0.08);

    /* Light Shadows */
    --dv-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --dv-shadow-md: 0 6px 20px rgba(0, 0, 0, 0.07);
    --dv-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1);
}

/* ─── 2. RESET & BASE ELEMENTS ─── */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    background-color: var(--dv-bg-1);
    color: var(--dv-text-2);
    font-family: var(--dv-font-body);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── 3. TYPOGRAPHY CLASSES ─── */
.dv-h1 {
    font-family: var(--dv-font-display);
    font-size: clamp(1.35rem, 2.2vw, 1.75rem);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.015em;
    color: var(--dv-text-1);
}

.dv-h2 {
    font-family: var(--dv-font-display);
    font-size: clamp(1.18rem, 1.8vw, 1.45rem);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.012em;
    color: var(--dv-text-1);
}

.dv-h3 {
    font-family: var(--dv-font-display);
    font-size: clamp(1rem, 1.3vw, 1.2rem);
    font-weight: 600;
    line-height: 1.35;
    color: var(--dv-text-1);
}

.dv-body {
    font-family: var(--dv-font-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--dv-text-2);
}

.dv-body-sm {
    font-family: var(--dv-font-body);
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--dv-text-muted);
}

.dv-mono {
    font-family: var(--dv-font-mono);
    font-size: 13px;
    letter-spacing: 0.04em;
}

/* Canonical Page Header Standards (Shared across Projects, Workshops, Labs, etc.) */
.dv-page-header {
    width: var(--dv-container-width);
    margin: 28px auto 36px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--dv-border);
    text-align: left;
}

.dv-page-title {
    font-family: var(--dv-font-display);
    font-size: clamp(1.35rem, 2.2vw, 1.65rem);
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 6px;
    color: var(--dv-accent);
    letter-spacing: -0.01em;
}

.dv-page-subtitle {
    font-family: var(--dv-font-body);
    font-size: 0.92rem;
    color: var(--dv-text-muted);
    max-width: none;
    margin: 0;
    line-height: 1.5;
}

/* Section Eyebrow / Tag */
.dv-section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--dv-font-mono);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--dv-accent);
    background: var(--dv-accent-soft);
    border: 1px solid var(--dv-accent-border);
    padding: 6px 14px;
    border-radius: var(--dv-radius-pill);
    margin-bottom: 16px;
}

/* ─── 4. BUTTONS & ACTIONS ─── */
.dv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--dv-font-display);
    font-size: 14px;
    font-weight: 600;
    line-height: 1;
    height: 38px;
    padding: 0 18px;
    border-radius: var(--dv-radius-md); /* 8px - 10px rounded-md matching admin panel */
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--dv-transition-base);
    user-select: none;
    white-space: nowrap;
}

.dv-btn-sm {
    height: 32px;
    padding: 0 12px;
    font-size: 13px;
    border-radius: var(--dv-radius-sm);
}

.dv-btn-lg {
    height: 44px;
    padding: 0 24px;
    font-size: 15px;
    border-radius: var(--dv-radius-md);
}

/* Primary Brand Orange Button */
.dv-btn-primary {
    background-color: var(--dv-accent);
    color: var(--dv-text-on-accent);
    font-weight: 700;
}

.dv-btn-primary:hover {
    background-color: var(--dv-accent-hover);
    transform: translateY(-2px);
    color: var(--dv-text-on-accent);
}

.dv-btn-primary:active {
    transform: translateY(0);
}

/* Secondary / Ghost Glass Button */
.dv-btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--dv-text-1);
    border-color: var(--dv-border-strong);
    backdrop-filter: blur(8px);
}

.dv-btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Ghost Outline with Orange Accent */
.dv-btn-outline-accent {
    background: transparent;
    color: var(--dv-accent);
    border-color: var(--dv-accent-border);
}

.dv-btn-outline-accent:hover {
    background: var(--dv-accent-soft);
    border-color: var(--dv-accent);
    color: #ffffff;
    transform: translateY(-2px);
}

/* Text Link with Hover Arrow */
.dv-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--dv-font-display);
    font-size: 15px;
    font-weight: 600;
    color: var(--dv-accent);
    text-decoration: none;
    transition: all var(--dv-transition-fast);
}

.dv-link i, .dv-link svg {
    transition: transform var(--dv-transition-fast);
}

.dv-link:hover {
    color: var(--dv-accent-hover);
}

.dv-link:hover i, .dv-link:hover svg {
    transform: translateX(4px);
}

/* ─── 5. BADGES & PILLS ─── */
.dv-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--dv-font-mono);
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: var(--dv-radius-sm);
    background: var(--dv-surface-2);
    color: var(--dv-text-2);
    border: 1px solid var(--dv-border);
}

.dv-badge-accent {
    background: var(--dv-accent-soft);
    color: var(--dv-accent);
    border-color: var(--dv-accent-border);
}

.dv-badge-pill {
    border-radius: var(--dv-radius-pill);
    padding: 4px 12px;
}

/* ─── 6. CARDS & CONTAINERS ─── */
.dv-container {
    width: var(--dv-container-width);
    max-width: var(--dv-container-max);
    margin-left: auto;
    margin-right: auto;
}

.dv-card {
    background: var(--dv-surface-1);
    border: 1px solid var(--dv-border);
    border-radius: var(--dv-radius-lg);
    box-shadow: var(--dv-shadow-sm);
    transition: all var(--dv-transition-smooth);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.dv-card-interactive {
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.dv-card-interactive:hover {
    border-color: var(--dv-accent-border);
    transform: translateY(-4px);
    box-shadow: var(--dv-shadow-md);
}

/* Inset Media Header (with outer card padding & rounded inner thumbnail) */
.dv-card-media-wrap {
    padding: 12px 12px 0 12px;
}

.dv-card-media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--dv-surface-2);
    border-radius: var(--dv-radius-md);
    overflow: hidden;
}

.dv-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--dv-transition-smooth);
}

.dv-card-interactive:hover .dv-card-media img {
    transform: scale(1.05);
}

.dv-card-badges {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 2;
}

/* Card Body */
.dv-card-body {
    padding: 18px 20px 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
}

.dv-card-title {
    font-family: var(--dv-font-display);
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.35;
    color: var(--dv-text-1);
    margin: 0;
}

.dv-card-detail {
    font-size: 13px;
    color: var(--dv-text-muted);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.dv-card-detail strong,
.dv-card-label {
    font-family: var(--dv-font-display);
    font-size: 12px;
    font-weight: 700;
    color: var(--dv-text-1);
}

.dv-card-divider {
    border: none;
    border-top: 1px solid var(--dv-border);
    margin: 4px 0;
}

.dv-card-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* Card Footer */
.dv-card-footer {
    padding: 12px 20px 16px;
    border-top: 1px solid var(--dv-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    background: var(--dv-surface-2);
}

.dv-card-action {
    color: var(--dv-accent);
    font-family: var(--dv-font-display);
    font-size: 14px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    text-decoration: none;
    transition: all var(--dv-transition-fast);
}

.dv-card-interactive:hover .dv-card-action {
    color: var(--dv-accent-hover);
}

.dv-card-interactive:hover .dv-card-action i,
.dv-card-interactive:hover .dv-card-action svg {
    transform: translateX(4px);
}

/* Glass Card */
.dv-card-glass {
    background: var(--dv-surface-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--dv-border-glass);
}

/* ─── 7. DIVISION-SPECIFIC CARDS (PREVIEWS) ─── */

/* Labs Project Showcase Card */
.dv-project-card {
    background: var(--dv-surface-1);
    border: 1px solid var(--dv-border);
    border-radius: var(--dv-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all var(--dv-transition-smooth);
}

.dv-project-card:hover {
    border-color: var(--dv-accent-border);
    transform: translateY(-4px);
}

.dv-project-media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--dv-surface-2);
    overflow: hidden;
}

.dv-project-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--dv-transition-smooth);
}

.dv-project-card:hover .dv-project-media img {
    transform: scale(1.04);
}

.dv-project-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-grow: 1;
}

/* Learn Workshop Card */
.dv-workshop-card {
    background: var(--dv-surface-1);
    border: 1px solid var(--dv-border);
    border-radius: var(--dv-radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: all var(--dv-transition-smooth);
}

.dv-workshop-card:hover {
    border-color: var(--dv-accent-border);
    transform: translateY(-4px);
}

.dv-workshop-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}