/* ============================================
   极映空间 – Premium Apple/Vercel Inspired Theme
   ============================================ */

/* Font loaded via <link> in HTML for faster rendering */

/* ---------- Skip Link (Accessibility) ---------- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 10000;
    padding: 12px 24px;
    background: var(--blue, #0070F3);
    color: #fff;
    border-radius: 0 0 8px 8px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: top 0.2s;
}

.skip-link:focus {
    top: 0;
}

/* ---------- Design Tokens ---------- */
:root {
    /* Fluid Typography (Modern Apple Style) */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Light Mode Colors (Cleaner, more vibrant) */
    --bg: #FAFAFA;
    --bg-secondary: #F0F0F0;
    --bg-card: #FFFFFF;
    --bg-card-hover: rgba(255, 255, 255, 0.95);

    --text-primary: #111111;
    --text-secondary: #555555;
    --text-muted: #6B6B6B;

    --border: rgba(0, 0, 0, 0.06);
    --border-hover: rgba(0, 0, 0, 0.12);

    /* Vercel/Apple inspired vibrant colors */
    --blue: #0070F3;
    --blue-hover: #0051B3;
    --teal: #00A99D;
    --green: #10B981;
    --amber: #F5A623;
    --red: #E00;
    --pink: #EC4899;
    --purple: #7928CA;

    /* Glowing Background Gradients */
    --grad-streaming: linear-gradient(135deg, #e50914 0%, #ff3b3b 100%);
    --grad-download: linear-gradient(135deg, #0ea5e9 0%, #22d3ee 100%);
    --grad-resource: linear-gradient(135deg, #8b5cf6 0%, #d946ef 100%);
    --grad-global: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --grad-index: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
    --grad-ai: linear-gradient(135deg, #ec4899 0%, #f472b6 100%);
    --grad-bt: linear-gradient(135deg, #06b6d4 0%, #2dd4bf 100%);
    --grad-hot: linear-gradient(135deg, #f43f5e 0%, #fb7185 100%);

    /* Advanced Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-card: 0 4px 24px -6px rgba(0, 0, 0, 0.05), border 1px solid var(--border);
    --shadow-card-hover: 0 12px 32px -8px rgba(0, 0, 0, 0.12), 0 0 0 1px var(--blue);

    /* Glassmorphism Navbar */
    --nav-bg: rgba(250, 250, 250, 0.75);
    --nav-blur: blur(16px) saturate(180%);

    /* Dimensions */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;

    --max-w: 1100px;
}

/* ---------- Dark Mode (Deep, OLED-friendly, Vercel depth) ---------- */
[data-theme="dark"] {
    --bg: #0A0A0A;
    --bg-secondary: #111111;
    --bg-card: #151515;
    --bg-card-hover: #1A1A1A;

    --text-primary: #EDEDED;
    --text-secondary: #A0A0A0;
    --text-muted: #8A8A8A;

    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);

    --blue: #3291FF;
    --blue-hover: #0070F3;
    --teal: #4DD0E1;
    --green: #34D399;
    --amber: #FBBF24;
    --red: #F87171;
    --pink: #F472B6;
    --purple: #A78BFA;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-card: 0 4px 24px -6px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    /* Neon glow effect on hover */
    --shadow-card-hover: 0 8px 32px -8px rgba(50, 145, 255, 0.25), 0 0 0 1px var(--blue);

    --nav-bg: rgba(10, 10, 10, 0.75);
}

/* ---------- Pill & Tag Overrides (Light/Dark Context) ---------- */
/* Pill generic base styles are defined later, these are dynamic coloring */
[data-theme="dark"] .pill-red {
    background: rgba(248, 113, 113, 0.15);
    color: var(--red);
}

[data-theme="dark"] .pill-purple {
    background: rgba(167, 139, 250, 0.15);
    color: var(--purple);
}

[data-theme="dark"] .pill-green {
    background: rgba(52, 211, 153, 0.15);
    color: var(--green);
}

[data-theme="dark"] .pill-blue {
    background: rgba(50, 145, 255, 0.15);
    color: var(--blue);
}

[data-theme="dark"] .pill-amber {
    background: rgba(251, 191, 36, 0.15);
    color: var(--amber);
}

/* Hub Card Icon Backgrounds */
.hub-card-icon.blue {
    background: rgba(0, 112, 243, 0.1);
}

.hub-card-icon.amber {
    background: rgba(245, 166, 35, 0.1);
}

.hub-card-icon.green {
    background: rgba(16, 185, 129, 0.1);
}

.hub-card-icon.red {
    background: rgba(238, 0, 0, 0.1);
}

.hub-card-icon.purple {
    background: rgba(121, 40, 202, 0.1);
}

.hub-card-icon.pink {
    background: rgba(236, 72, 153, 0.1);
}

.hub-card-icon.teal {
    background: rgba(0, 169, 157, 0.1);
}

[data-theme="dark"] .hub-card-icon.blue {
    background: rgba(50, 145, 255, 0.15);
}

[data-theme="dark"] .hub-card-icon.amber {
    background: rgba(251, 191, 36, 0.15);
}

[data-theme="dark"] .hub-card-icon.green {
    background: rgba(52, 211, 153, 0.15);
}

[data-theme="dark"] .hub-card-icon.red {
    background: rgba(248, 113, 113, 0.15);
}

[data-theme="dark"] .hub-card-icon.purple {
    background: rgba(167, 139, 250, 0.15);
}

[data-theme="dark"] .hub-card-icon.pink {
    background: rgba(244, 114, 182, 0.15);
}

[data-theme="dark"] .hub-card-icon.teal {
    background: rgba(77, 208, 225, 0.15);
}

/* System Preference Dark Mode (Fallback if JS doesn't set data-theme) */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg: #0A0A0A;
        --bg-secondary: #111111;
        --bg-card: #151515;
        --bg-card-hover: #1A1A1A;

        --text-primary: #EDEDED;
        --text-secondary: #A0A0A0;
        --text-muted: #666666;

        --border: rgba(255, 255, 255, 0.1);
        --border-hover: rgba(255, 255, 255, 0.2);

        --blue: #3291FF;
        --blue-hover: #0070F3;
        --teal: #4DD0E1;
        --green: #34D399;
        --amber: #FBBF24;
        --red: #F87171;
        --pink: #F472B6;
        --purple: #A78BFA;

        --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
        --shadow-card: 0 4px 24px -6px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.05);
        --shadow-card-hover: 0 8px 32px -8px rgba(50, 145, 255, 0.25), 0 0 0 1px var(--blue);

        --nav-bg: rgba(10, 10, 10, 0.75);
    }

    :root:not([data-theme="light"]) .pill-red {
        background: rgba(248, 113, 113, 0.15);
        color: var(--red);
    }

    :root:not([data-theme="light"]) .pill-purple {
        background: rgba(167, 139, 250, 0.15);
        color: var(--purple);
    }

    :root:not([data-theme="light"]) .pill-green {
        background: rgba(52, 211, 153, 0.15);
        color: var(--green);
    }

    :root:not([data-theme="light"]) .pill-blue {
        background: rgba(50, 145, 255, 0.15);
        color: var(--blue);
    }

    :root:not([data-theme="light"]) .pill-amber {
        background: rgba(251, 191, 36, 0.15);
        color: var(--amber);
    }

    :root:not([data-theme="light"]) .hub-card-icon.blue {
        background: rgba(50, 145, 255, 0.15);
    }

    :root:not([data-theme="light"]) .hub-card-icon.amber {
        background: rgba(251, 191, 36, 0.15);
    }

    :root:not([data-theme="light"]) .hub-card-icon.green {
        background: rgba(52, 211, 153, 0.15);
    }

    :root:not([data-theme="light"]) .hub-card-icon.red {
        background: rgba(248, 113, 113, 0.15);
    }

    :root:not([data-theme="light"]) .hub-card-icon.purple {
        background: rgba(167, 139, 250, 0.15);
    }

    :root:not([data-theme="light"]) .hub-card-icon.pink {
        background: rgba(244, 114, 182, 0.15);
    }

    :root:not([data-theme="light"]) .hub-card-icon.teal {
        background: rgba(77, 208, 225, 0.15);
    }
}

/* ---------- SVG Icon System ---------- */
.ui-icon {
    width: 1em;
    height: 1em;
    display: inline-block;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    /* slightly thinner, more elegant */
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   HUB – Navbar
   ============================================ */
.nav-bar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: var(--nav-blur);
    -webkit-backdrop-filter: var(--nav-blur);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-bar.scrolled {
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.04);
}

.nav-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: 52px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.nav-brand-icon {
    width: 28px;
    height: 28px;
    background: var(--blue);
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
}

.nav-brand-icon .ui-icon {
    width: 16px;
    height: 16px;
    stroke-width: 2.1;
}

.nav-link-hub {
    margin-left: auto;
    padding: 5px 14px;
    border-radius: 980px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.nav-link-hub:hover {
    color: var(--blue);
}

.nav-link-hub.active {
    color: var(--blue);
}

/* ============================================
   HUB – Hero (Cinematic Banner)
   ============================================ */
.hub-hero {
    position: relative;
    max-width: 1080px;
    margin: 32px auto 20px;
    padding: 100px 24px;
    min-height: 280px;
    text-align: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: #0d0d0f;
    /* Base dark color crucial for the posters to pop */
    box-shadow: 0 12px 40px -10px rgba(0, 0, 0, 0.15);
}

.hero-poster-wall {
    position: absolute;
    top: -200px;
    left: -100px;
    right: -100px;
    bottom: -200px;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
    opacity: 0.85;
    /* 3D Parallax Perspective adjusted for better viewing angle */
    transform: perspective(1000px) rotateX(15deg) rotateY(-5deg) rotateZ(-2deg) scale(1.1);
    transform-origin: center;
    pointer-events: none;
}

.poster-track {
    display: flex;
    flex-wrap: nowrap;
    gap: 16px;
    width: max-content;
}

/* Row speeds and directions */
.track-1 {
    animation: scrollLeft 90s linear infinite;
}

.track-2 {
    animation: scrollRight 110s linear infinite;
    margin-left: -500px;
}

.track-3 {
    animation: scrollLeft 80s linear infinite;
    margin-left: -300px;
}

.poster-item {
    width: 60px;
    height: 86px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
    background: #2a2a2a;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    /* Improve rendering */
    transform: translateZ(0);
    will-change: transform;
}

.poster-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.8) contrast(1.1);
}

@keyframes scrollLeft {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-988px);
    }
}

@keyframes scrollRight {
    0% {
        transform: translateX(-988px);
    }

    100% {
        transform: translateX(0);
    }
}

/* Pause poster wall animation on hover for reduced distraction */
.hub-hero:hover .poster-track {
    animation-play-state: paused;
}

.hero-banner-overlay {
    position: absolute;
    inset: 0;
    /* Gentle dark gradient to ensure text readability but let posters pop */
    background: linear-gradient(180deg, rgba(13, 13, 15, 0.7) 0%, rgba(13, 13, 15, 0.95) 100%);
    backdrop-filter: blur(1px);
    -webkit-backdrop-filter: blur(1px);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
}

.hub-hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: #FFFFFF;
    line-height: 1.1;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hub-hero-desc {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.15rem;
    font-weight: 500;
    margin-top: 18px;
    letter-spacing: -0.01em;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

/* ============================================
   HUB – Card Grid
   ============================================ */
.hub-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    padding: 40px 0;
}

.hub-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 28px 24px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    /* Magnetic hover vars */
    --x: 50%;
    --y: 50%;
}

.hub-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(400px circle at var(--x) var(--y), rgba(255, 255, 255, 0.5), transparent 40%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    z-index: 1;
}

[data-theme="dark"] .hub-card::before {
    background: radial-gradient(400px circle at var(--x) var(--y), rgba(255, 255, 255, 0.04), transparent 40%);
}

.hub-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: var(--shadow-card-hover);
    background: var(--bg-card-hover);
}

.hub-card:hover::before {
    opacity: 1;
}

.hub-card>* {
    position: relative;
    z-index: 1;
}

.search-hidden {
    opacity: 0;
    transform: scale(0.92) !important;
    pointer-events: none;
    position: absolute;
    visibility: hidden;
}

.hub-card:nth-child(1) {
    animation-delay: 0.04s;
}

.hub-card:nth-child(2) {
    animation-delay: 0.08s;
}

.hub-card:nth-child(3) {
    animation-delay: 0.12s;
}

.hub-card:nth-child(4) {
    animation-delay: 0.16s;
}

.hub-card:nth-child(5) {
    animation-delay: 0.20s;
}

.hub-card:nth-child(6) {
    animation-delay: 0.24s;
}

.hub-card:nth-child(7) {
    animation-delay: 0.28s;
}

.hub-card:nth-child(8) {
    animation-delay: 0.32s;
}

.hub-card:nth-child(9) {
    animation-delay: 0.36s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hub-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.hub-card-icon {
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hub-card-icon.blue {
    background: #e8f4fd;
    color: #0071e3;
}

.hub-card-icon.purple {
    background: #f0eaff;
    color: #7c3aed;
}

.hub-card-icon.amber {
    background: #fef3e2;
    color: #d97706;
}

.hub-card-icon.green {
    background: #e6f9f0;
    color: #059669;
}

.hub-card-icon.red {
    background: #fde8e8;
    color: #dc2626;
}

.hub-card-icon.pink {
    background: #fce7f3;
    color: #db2777;
}

.hub-card-icon.teal {
    background: #e0f7fa;
    color: #0891b2;
}

.hub-card-icon .ui-icon {
    width: 22px;
    height: 22px;
    stroke-width: 2;
}

.hub-card-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.hub-card-sub {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 1px;
    letter-spacing: 0;
}

.hub-card-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 16px;
}

.hub-card-actions {
    display: flex;
    margin-top: auto;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    background: var(--blue);
    color: #ffffff !important;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 2;
    /* keep above the hover spotlight */
}

.btn-primary .ui-icon {
    width: 0.95rem;
    height: 0.95rem;
    stroke-width: 2.1;
}

.btn-primary:hover {
    background: var(--blue-hover);
    box-shadow: 0 4px 12px rgba(0, 112, 243, 0.3);
    opacity: 0.92;
}

/* ============================================
   HUB – Info & Footer
   ============================================ */
.info-box {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    margin-bottom: 48px;
}

.info-box-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.info-item {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 4px 0;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.info-check {
    flex-shrink: 0;
}

footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
    text-align: center;
}

footer p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

footer .copyright {
    margin-top: 4px;
}

/* ============================================
   SUB – Navbar
   ============================================ */
.sub-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
}

.sub-nav.scrolled {
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.04);
}

.sub-nav-inner {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    height: 52px;
    gap: 20px;
    overflow-x: auto;
    scrollbar-width: none;
}

.sub-nav-inner::-webkit-scrollbar {
    display: none;
}

.sub-nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    white-space: nowrap;
    letter-spacing: -0.02em;
}

.sub-nav-brand .ui-icon {
    width: 0.95rem;
    height: 0.95rem;
    color: var(--blue);
}

.sub-nav-links {
    display: flex;
    gap: 2px;
    margin-left: auto;
}

.sub-nav-link {
    padding: 5px 12px;
    border-radius: 980px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    transition: all 0.2s;
}

.sub-nav-link:hover {
    color: var(--text-primary);
}

.sub-nav-link.active {
    color: var(--blue);
}

/* ============================================
   SUB – Hero
   ============================================ */
.sub-hero {
    padding: 56px 0 24px;
    text-align: center;
}

.sub-hero h1 {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.sub-hero-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 6px;
}

.sub-hero-desc strong {
    color: var(--text-primary);
    font-weight: 600;
}

.sub-hero-tags {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 14px;
    background: rgba(0, 112, 243, 0.08);
    border-radius: 980px;
    font-size: 0.78rem;
    color: var(--blue);
    font-weight: 500;
}

/* ============================================
   SUB – Shortcut pills
   ============================================ */
.shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 20px 0;
    justify-content: center;
}

.shortcut-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 980px;
    font-size: 0.78rem;
    font-weight: 500;
    white-space: nowrap;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.shortcut-pill .ui-icon {
    width: 0.92rem;
    height: 0.92rem;
    stroke-width: 2.1;
}

.pill-red {
    background: #fde8e8;
    color: #dc2626;
}

.pill-purple {
    background: #f0eaff;
    color: #7c3aed;
}

.pill-green {
    background: #e6f9f0;
    color: #059669;
}

.pill-blue {
    background: #e8f4fd;
    color: #0071e3;
}

.pill-teal {
    background: #e0f7fa;
    color: #0891b2;
}

.pill-amber {
    background: #fef3e2;
    color: #d97706;
}

.pill-pink {
    background: #fce7f3;
    color: #db2777;
}

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

/* ============================================
   SUB – Section Bar
   ============================================ */
.section-bar {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-primary);
    padding: 20px 0 14px;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-bar::before {
    content: '';
    width: 3px;
    height: 20px;
    border-radius: 2px;
    background: var(--blue);
    flex-shrink: 0;
}

/* ============================================
   SUB – Resource Card Grid
   ============================================ */
.resource-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    padding-bottom: 20px;
}

.resource-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 22px;
    text-align: center;
    transition: all 0.35s cubic-bezier(0.25, 0.1, 0.25, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0;
    transform: translateY(20px);
}

.resource-card.card-visible {
    opacity: 1;
    transform: translateY(0);
}

.resource-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: scale(1.015);
}

.resource-icon {
    position: relative;
    z-index: 1;
    margin-bottom: 14px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.03), inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.resource-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
    filter: blur(16px);
    z-index: -1;
}

[data-theme="dark"] .resource-icon {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2), inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

.resource-card:hover .resource-icon {
    transform: scale(1.08) translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.resource-card:hover .resource-icon::after {
    opacity: 0.7;
}

[data-theme="dark"] .resource-card:hover .resource-icon {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .resource-card:hover .resource-icon::after {
    opacity: 0.5;
}

/* --- Glowing Background Classes --- */
.bg-streaming {
    background: var(--grad-streaming);
}

.bg-streaming::after {
    background: var(--grad-streaming);
}

.bg-download {
    background: var(--grad-download);
}

.bg-download::after {
    background: var(--grad-download);
}

.bg-resource {
    background: var(--grad-resource);
}

.bg-resource::after {
    background: var(--grad-resource);
}

.bg-global {
    background: var(--grad-global);
}

.bg-global::after {
    background: var(--grad-global);
}

.bg-index {
    background: var(--grad-index);
}

.bg-index::after {
    background: var(--grad-index);
}

.bg-ai {
    background: var(--grad-ai);
}

.bg-ai::after {
    background: var(--grad-ai);
}

.bg-bt {
    background: var(--grad-bt);
}

.bg-bt::after {
    background: var(--grad-bt);
}

.bg-hot {
    background: var(--grad-hot);
}

.bg-hot::after {
    background: var(--grad-hot);
}

.resource-icon .ui-icon,
.resource-icon .material-local {
    width: 32px;
    height: 32px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
    transition: all 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

[data-theme="dark"] .resource-icon .material-local {
    filter: drop-shadow(0 3px 5px rgba(0, 0, 0, 0.2));
}

.resource-card:hover .material-local {
    transform: scale(1.15) rotate(2deg);
}



.resource-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    letter-spacing: -0.01em;
}

.resource-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.55;
    margin-bottom: 12px;
    flex: 1;
}

.resource-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: 14px;
}

.tag {
    display: inline-block;
    padding: 2px 9px;
    background: var(--bg-secondary);
    color: var(--text-muted);
    border-radius: 980px;
    font-size: 0.7rem;
    font-weight: 500;
}

.btn-visit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 11px 0;
    min-height: 44px;
    background: var(--blue);
    color: #fff;
    border-radius: 980px;
    font-size: 0.82rem;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-visit:hover {
    background: var(--blue-hover);
    transform: scale(1.02);
}

/* ============================================
   SUB – Hot Nav
   ============================================ */
.hot-nav {
    padding: 8px 0 28px;
}

.hot-nav-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}

/* ============================================
   SUB – Footer
   ============================================ */
.sub-footer {
    border-top: 1px solid var(--border);
    padding: 24px 0;
    text-align: center;
}

.sub-footer p {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.bookmark-tip {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.bookmark-tip kbd {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 1px 6px;
    border-radius: 4px;
    font-family: var(--font);
    font-size: 0.75rem;
}

/* ============================================
   Back to Top
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-secondary);
    font-size: 1.1rem;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s;
    z-index: 99;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-card);
    color: var(--blue);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 900px) {
    .hub-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .hub-hero h1 {
        font-size: 2.2rem;
    }
}

@media (max-width: 600px) {
    .hub-grid {
        grid-template-columns: 1fr;
    }

    .resource-grid {
        grid-template-columns: 1fr;
    }

    .hub-hero h1 {
        font-size: 1.8rem;
    }

    .sub-hero h1 {
        font-size: 1.5rem;
    }

    .hub-card {
        padding: 20px;
    }

    .nav-inner,
    .sub-nav-inner {
        padding: 0 16px;
    }

    .container {
        padding: 0 16px;
    }

    /* Touch-friendly target sizes (44px minimum) */
    .sub-nav-link {
        padding: 10px 14px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    .nav-link-hub {
        padding: 10px 16px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    .theme-toggle {
        width: 44px;
        height: 44px;
    }

    .shortcut-pill {
        padding: 10px 18px;
        font-size: 0.82rem;
    }

    .btn-visit {
        padding: 12px 0;
        font-size: 0.88rem;
    }

    .btn-primary {
        padding: 12px 24px;
        font-size: 0.88rem;
    }

    .back-to-top {
        width: 44px;
        height: 44px;
    }
}

/* ---------- Search Bar ---------- */
.search-wrap {
    max-width: 500px;
    margin: 10px auto 0;
    /* Tighter spacing to card grid below */
    position: relative;
    z-index: 10;
    animation: fadeIn 0.8s ease both;
}

.search-wrap input {
    width: 100%;
    padding: 16px 20px 16px 48px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    /* Moved shadow to input itself */
    transition: all 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.search-wrap input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.15);
    transform: translateY(-2px);
}

.search-wrap input::placeholder {
    color: var(--text-muted);
}

.search-wrap .search-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.1rem;
    pointer-events: none;
}

.search-wrap .search-icon .ui-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2.1;
}

.search-count {
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 8px;
    min-height: 1.2em;
}

.resource-card.search-hidden {
    display: none;
}

/* ---------- Dark Mode Toggle ---------- */
.theme-toggle {
    background: transparent;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 8px;
    min-width: 44px;
    min-height: 44px;
    border-radius: var(--radius-full);
    color: var(--text-primary);
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.2s;
    margin-left: 12px;
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: var(--bg-secondary);
}

.theme-toggle:active {
    transform: scale(0.9);
}

/* Hub card hidden state for search */
.hub-card.search-hidden {
    display: none;
}

/* ---------- Disclaimer ---------- */
.disclaimer {
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 10px;
    opacity: 0.7;
}

/* ---------- Focus Visible (Keyboard a11y) ---------- */
.btn-primary:focus-visible,
.btn-visit:focus-visible,
.nav-link-hub:focus-visible,
.sub-nav-link:focus-visible,
.theme-toggle:focus-visible,
.shortcut-pill:focus-visible,
.back-to-top:focus-visible,
.hub-card:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 2px;
}

.search-wrap input:focus-visible {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(0, 112, 243, 0.15);
}

/* ---------- Reduced Motion Preference ---------- */
@media (prefers-reduced-motion: reduce) {
    .poster-track {
        animation: none !important;
    }

    .hub-card {
        animation: none !important;
    }

    .resource-card {
        transition: none !important;
        opacity: 1 !important;
        transform: none !important;
    }

    .resource-card.card-visible {
        opacity: 1;
        transform: none;
    }

    html {
        scroll-behavior: auto;
    }
}