/* ===== ROOT VARIABLES ===== */
:root {
    --accent: #2563eb;
    --accent-glow: rgba(0, 154, 156, 0.24);
    --accent-dim: rgba(0, 154, 156, 0.08);
    --accent-border: rgba(0, 154, 156, 0.2);
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --radius-card: 1.5rem;
    --radius-pill: 9999px;
    --nav-height: 68px;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Outfit', 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Light */
    --bg-page: #F8FAFC;
    --text-main: #1A2333;
    --text-soft: rgba(26, 35, 51, 0.72);
    --glass-bg: rgba(255, 255, 255, 0.58);
    --glass-border: rgba(255, 255, 255, 0.34);
    --glass-shadow: 0 12px 40px rgba(15, 23, 42, 0.06);
    --glass-blur: 20px;
    --drawer-bg: rgba(255, 255, 255, 0.78);
    --drawer-border: rgba(255, 255, 255, 0.3);
    --drawer-shadow: 0 24px 80px rgba(15, 23, 42, 0.12);
}

.dark {
    --bg-page: #020617;
    --text-main: #F8FAFC;
    --text-soft: rgba(248, 250, 252, 0.74);
    --glass-bg: rgba(15, 23, 42, 0.56);
    --glass-border: rgba(148, 163, 184, 0.16);
    --glass-shadow: 0 16px 45px rgba(0, 0, 0, 0.28);
    --drawer-bg: rgba(15, 23, 42, 0.88);
    --drawer-border: rgba(255, 255, 255, 0.06);
    --drawer-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}

        /* ===== RESET & BASE ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            overflow-x: hidden;
            -webkit-tap-highlight-color: transparent;
            text-rendering: optimizeLegibility;
        }
        body {
            min-height: 100vh;
            max-width: 100%;
            overflow-x: hidden;
            background: var(--bg-page);
            color: var(--text-main);
            font-family: var(--font-sans);
            line-height: 1.65;
            letter-spacing: -0.01em;
            scroll-padding-top: var(--nav-height);
            transition: background-color 0.45s var(--ease), color 0.45s var(--ease);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        ::selection {
            background: var(--accent);
            color: #fff;
        }
        :focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
            border-radius: 0.5rem;
        }
        h1,
        h2,
        h3,
        .font-display {
            font-family: var(--font-display);
        }
        .brand-text {
            font-family: var(--font-display);
            font-weight: 900;
            letter-spacing: -0.03em;
        }

        /* ===== GLASS MIXINS ===== */
        .glass,
        .glass-card,
        .glass-pill,
        .glass-nav,
        .glass-social,
        .drawer-glass {
            backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
            -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
            transition: background 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease, transform 0.5s var(--ease-spring);
        }

        @supports not (backdrop-filter: blur(1px)) {
            .glass {
                background: rgba(255, 255, 255, 0.92);
            }
            .dark .glass {
                background: rgba(15, 23, 42, 0.92);
            }
            .glass-card {
                background: rgba(255, 255, 255, 0.9);
            }
            .dark .glass-card {
                background: rgba(15, 23, 42, 0.9);
            }
            .glass-pill {
                background: rgba(255, 255, 255, 0.88);
            }
            .dark .glass-pill {
                background: rgba(30, 41, 59, 0.88);
            }
            .glass-nav {
                background: rgba(255, 255, 255, 0.96);
            }
            .dark .glass-nav {
                background: rgba(2, 6, 23, 0.96);
            }
            .glass-social {
                background: rgba(255, 255, 255, 0.85);
            }
            .dark .glass-social {
                background: rgba(30, 41, 59, 0.85);
            }
            .drawer-glass {
                background: rgba(255, 255, 255, 0.96);
            }
            .dark .drawer-glass {
                background: rgba(15, 23, 42, 0.96);
            }
        }

        .glass {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.6) inset, var(--glass-shadow);
        }
        .dark .glass {
            background: rgba(15, 23, 42, 0.55);
            border-color: rgba(255, 255, 255, 0.07);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.05) inset, 0 8px 40px rgba(0, 0, 0, 0.4);
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.44);
            border: 1px solid rgba(255, 255, 255, 0.32);
            border-radius: var(--radius-card);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.5) inset, 0 4px 24px rgba(0, 0, 0, 0.03);
            transition: transform 0.5s var(--ease-spring), box-shadow 0.5s ease, border-color 0.5s ease, background 0.5s ease;
        }
        .dark .glass-card {
            background: rgba(15, 23, 42, 0.5);
            border-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.04) inset, 0 4px 28px rgba(0, 0, 0, 0.35);
        }
        .glass-card.glass-hover:hover {
            background: rgba(255, 255, 255, 0.65);
            border-color: rgba(255, 255, 255, 0.5);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.7) inset, 0 12px 48px rgba(59, 130, 246, 0.08);
            transform: translateY(-4px) scale(1.005);
        }
        .dark .glass-card.glass-hover:hover {
            background: rgba(30, 41, 59, 0.6);
            border-color: rgba(255, 255, 255, 0.1);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.06) inset, 0 12px 48px rgba(59, 130, 246, 0.06);
        }

        .glass-pill {
            background: rgba(255, 255, 255, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.28);
            border-radius: var(--radius-pill);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.4) inset, 0 2px 12px rgba(0, 0, 0, 0.02);
        }
        .dark .glass-pill {
            background: rgba(30, 41, 59, 0.45);
            border-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.04) inset, 0 2px 16px rgba(0, 0, 0, 0.3);
        }

        .glass-nav {
            background: rgba(255, 255, 255, 0.55);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.5) inset, 0 8px 40px rgba(0, 0, 0, 0.03);
        }
        .dark .glass-nav {
            background: rgba(2, 6, 23, 0.7);
            border-bottom-color: rgba(255, 255, 255, 0.05);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.04) inset, 0 8px 48px rgba(0, 0, 0, 0.5);
        }
        .glass-nav.scrolled {
            background: rgba(255, 255, 255, 0.78);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.5) inset, 0 8px 48px rgba(0, 0, 0, 0.06);
        }
        .dark .glass-nav.scrolled {
            background: rgba(2, 6, 23, 0.85);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.04) inset, 0 8px 48px rgba(0, 0, 0, 0.6);
        }

        .glass-social {
            background: rgba(255, 255, 255, 0.3);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 12px;
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.3) inset;
            transition: all 0.4s var(--ease-spring);
        }
        .dark .glass-social {
            background: rgba(30, 41, 59, 0.35);
            border-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.04) inset;
        }
        .glass-social:hover {
            background: rgba(255, 255, 255, 0.65);
            border-color: rgba(255, 255, 255, 0.5);
            box-shadow: 0 12px 32px rgba(59, 130, 246, 0.1);
            transform: scale(1.08) translateY(-3px);
        }
        .dark .glass-social:hover {
            background: rgba(30, 41, 59, 0.65);
            border-color: rgba(255, 255, 255, 0.12);
            box-shadow: 0 12px 32px rgba(59, 130, 246, 0.06);
        }

        /* ===== NAV DRAWER (Side Panel) ===== */
        #nav-drawer {
            position: fixed;
            top: 0;
            right: 0;
            z-index: 60;
            width: 280px;
            max-width: 85vw;
            height: 100%;
            background: var(--drawer-bg);
            border-left: 1px solid var(--drawer-border);
            box-shadow: var(--drawer-shadow);
            backdrop-filter: blur(28px) saturate(1.5);
            -webkit-backdrop-filter: blur(28px) saturate(1.5);
            transform: translateX(100%);
            transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
            will-change: transform;
            overflow-y: auto;
        }
        #nav-drawer.open {
            transform: translateX(0);
        }
        /* Staggered item reveal */
        #nav-drawer .drawer-item,
        #nav-drawer .drawer-external-item {
            opacity: 0;
            transform: translateX(12px);
            transition: opacity 0.28s var(--ease-out), transform 0.28s var(--ease-out), background 0.2s ease, color 0.2s ease;
        }
        #nav-drawer.open .drawer-item,
        #nav-drawer.open .drawer-external-item {
            opacity: 1;
            transform: translateX(0);
        }
        #nav-drawer.open .drawer-item:nth-child(1) { transition-delay: 0.06s; }
        #nav-drawer.open .drawer-item:nth-child(2) { transition-delay: 0.10s; }
        #nav-drawer.open .drawer-item:nth-child(3) { transition-delay: 0.14s; }
        #nav-drawer.open .drawer-item:nth-child(4) { transition-delay: 0.18s; }
        #nav-drawer.open .drawer-item:nth-child(5) { transition-delay: 0.22s; }
        @media (prefers-reduced-motion: reduce) {
            #nav-drawer,
            #nav-drawer .drawer-item,
            #nav-drawer .drawer-external-item,
            #drawer-overlay {
                transition: none !important;
            }
            #nav-drawer.open .drawer-item,
            #nav-drawer.open .drawer-external-item {
                opacity: 1;
                transform: none;
            }
        }
        .dark #nav-drawer {
            background: var(--drawer-bg);
            border-left-color: rgba(255, 255, 255, 0.04);
        }
        #drawer-overlay {
            position: fixed;
            inset: 0;
            z-index: 55;
            background: rgba(0, 0, 0, 0.15);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.4s ease;
        }
        .dark #drawer-overlay {
            background: rgba(0, 0, 0, 0.35);
        }
        #drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.6rem 0.9rem;
            border-radius: 12px;
            color: #475569;
            font-size: 0.88rem;
            font-weight: 500;
            text-decoration: none;
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .dark .drawer-item {
            color: #cbd5e1;
        }
        .drawer-item:hover,
        .drawer-item:focus-visible {
            background: rgba(59, 130, 246, 0.08);
            color: var(--accent);
        }
        .dark .drawer-item:hover,
        .dark .drawer-item:focus-visible {
            background: rgba(59, 130, 246, 0.10);
        }
        .drawer-item .icon {
            width: 1.4rem;
            text-align: center;
            font-size: 0.95rem;
            flex-shrink: 0;
            color: #94a3b8;
        }
        .dark .drawer-item .icon {
            color: #64748b;
        }
        .drawer-item:hover .icon {
            color: var(--accent);
        }
        .drawer-divider {
            height: 1px;
            margin: 0.5rem 0.5rem;
            background: rgba(148, 163, 184, 0.16);
        }
        .dark .drawer-divider {
            background: rgba(255, 255, 255, 0.06);
        }
        .drawer-tagline {
            font-size: 0.7rem;
            font-weight: 400;
            color: #94a3b8;
            padding: 0.25rem 0.9rem;
            letter-spacing: 0.02em;
        }
        .dark .drawer-tagline {
            color: #64748b;
        }
        .drawer-lang-wrap .lang-btn {
            padding: 0.2rem 0.7rem;
            border: none;
            border-radius: var(--radius-pill);
            background: transparent;
            color: #94a3b8;
            font-family: var(--font-mono);
            font-size: 0.6rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s var(--ease-spring);
        }
        .drawer-lang-wrap .lang-btn.active {
            background: var(--accent) !important;
            color: #ffffff !important;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.25);
        }

        /* ===== HEADER ===== */
        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1rem;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
        }
        @media (min-width: 640px) {
            .header-inner {
                padding: 0 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .header-inner {
                padding: 0 2rem;
            }
        }

        /* ===== HEADER SEARCH ===== */
        .header-search {
            position: relative;
            display: none;
            align-items: center;
            flex: 1 1 auto;
            max-width: 480px;
            min-width: 320px;
            height: 48px;
            margin: 0 1rem;
        }
        @media (min-width: 860px) {
            .header-search { display: flex; }
        }
        .header-search-field {
            width: 100%;
            height: 100%;
            padding: 0 2.75rem 0 2.75rem;
            border-radius: var(--radius-pill);
            border: 1px solid var(--glass-border);
            background: var(--glass-bg);
            backdrop-filter: blur(16px) saturate(1.4);
            -webkit-backdrop-filter: blur(16px) saturate(1.4);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.4) inset, 0 2px 14px rgba(0, 0, 0, 0.04);
            color: var(--text-main);
            font-size: 0.9rem;
            font-family: var(--font-sans);
            transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease), background 0.2s var(--ease);
        }
        .header-search-field::placeholder { color: var(--text-soft); }
        .header-search-field:focus-visible {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.4) inset, 0 0 0 3px var(--accent-dim);
        }
        .header-search-icon {
            position: absolute;
            left: 0.9rem;
            top: 50%;
            transform: translateY(-50%);
            width: 16px;
            height: 16px;
            color: var(--text-soft);
            pointer-events: none;
        }
        .header-search-hint {
            position: absolute;
            right: 0.6rem;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            align-items: center;
            gap: 2px;
            padding: 0.15rem 0.4rem;
            border-radius: 6px;
            border: 1px solid var(--glass-border);
            background: rgba(127, 127, 127, 0.08);
            font-family: var(--font-mono);
            font-size: 0.62rem;
            color: var(--text-soft);
            pointer-events: none;
        }
        @media (pointer: coarse) {
            .header-search-hint { display: none; }
        }
        .header-search-clear {
            position: absolute;
            right: 0.6rem;
            top: 50%;
            transform: translateY(-50%);
            display: none;
            width: 22px;
            height: 22px;
            align-items: center;
            justify-content: center;
            border-radius: 999px;
            color: var(--text-soft);
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .header-search-clear svg { width: 14px; height: 14px; }
        .header-search.has-query .header-search-hint { display: none; }
        .header-search.has-query .header-search-clear { display: flex; }
        .header-search-results {
            position: absolute;
            top: calc(100% + 8px);
            left: 0;
            right: 0;
            max-height: 320px;
            overflow-y: auto;
            border-radius: 1rem;
            border: 1px solid var(--glass-border);
            background: var(--drawer-bg);
            backdrop-filter: blur(24px) saturate(1.4);
            -webkit-backdrop-filter: blur(24px) saturate(1.4);
            box-shadow: var(--drawer-shadow);
            padding: 0.4rem;
            display: none;
        }
        .header-search.has-query .header-search-results { display: block; }
        .header-search-result {
            display: flex;
            flex-direction: column;
            gap: 0.1rem;
            padding: 0.6rem 0.75rem;
            border-radius: 0.65rem;
            text-decoration: none;
            color: var(--text-main);
        }
        .header-search-result:hover,
        .header-search-result:focus-visible {
            background: var(--accent-dim);
            outline: none;
        }
        .header-search-result-title { font-size: 0.85rem; font-weight: 600; }
        .header-search-result-meta { font-size: 0.72rem; color: var(--text-soft); }
        .header-search-empty {
            padding: 0.75rem;
            font-size: 0.8rem;
            color: var(--text-soft);
            text-align: center;
        }

        /* ===== HAMBURGER (bars -> X, transform-only) ===== */
        .hamburger {
            position: relative;
            width: 18px;
            height: 14px;
            flex-shrink: 0;
        }
        .hamburger span {
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: currentColor;
            transition: transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .hamburger span:nth-child(1) { top: 0; }
        .hamburger span:nth-child(2) { top: 6px; }
        .hamburger span:nth-child(3) { top: 12px; }
        #menu-btn[aria-expanded="true"] .hamburger span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }
        #menu-btn[aria-expanded="true"] .hamburger span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        #menu-btn[aria-expanded="true"] .hamburger span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }
        @media (prefers-reduced-motion: reduce) {
            .hamburger span { transition: none; }
        }

        /* ===== SCROLL PROGRESS ===== */
        #scroll-progress {
            height: 3px;
            background: linear-gradient(90deg, #3b82f6, #60a5fa, #a78bfa);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.08s linear;
        }

        /* ===== BUTTONS ===== */
        .btn-primary {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: flex-start;
            gap: 10px;
            min-width: 150px;
            min-height: 52px;
            padding: 14px 32px;
            border: none;
            border-radius: 14px;
            background: var(--accent);
            color: #ffffff;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            text-decoration: none;
            cursor: pointer;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.3);
            transition: transform 0.4s var(--ease-spring), box-shadow 0.4s ease, filter 0.4s ease;
        }
        .btn-primary::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .btn-primary:hover {
            box-shadow: 0 16px 44px rgba(59, 130, 246, 0.4);
            filter: brightness(1.06);
            transform: translateY(-3px) scale(1.02);
        }
        .btn-primary:active {
            transform: scale(0.96);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: flex-start;
            gap: 10px;
            min-width: 150px;
            min-height: 52px;
            padding: 14px 32px;
            border: 1.5px solid rgba(148, 163, 184, 0.25);
            border-radius: 14px;
            background: transparent;
            color: #94a3b8;
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: -0.01em;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.4s var(--ease-spring);
        }
        .btn-secondary:hover {
            background: rgba(59, 130, 246, 0.08);
            border-color: var(--accent);
            color: #f8fafc;
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.06);
            transform: translateY(-3px) scale(1.01);
        }

        .tool-open-btn {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            gap: 0.5rem;
            padding: 0.625rem 1.25rem;
            border: none;
            border-radius: 12px;
            background: var(--accent);
            color: #ffffff;
            font-family: var(--font-sans);
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-decoration: none;
            text-transform: uppercase;
            cursor: pointer;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.2);
            transition: all 0.4s var(--ease-spring);
        }
        .tool-open-btn::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .tool-open-btn:hover {
            background: #2563eb;
            box-shadow: 0 8px 28px rgba(59, 130, 246, 0.3);
            transform: translateY(-2px) scale(1.03);
        }

        .tool-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.625rem;
        }

        .tool-docs-btn {
            position: relative;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            gap: 0.5rem;
            padding: 0.625rem 1.25rem;
            border: 1px solid var(--accent-border);
            border-radius: 12px;
            background: var(--accent-dim);
            color: var(--accent);
            font-family: var(--font-sans);
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.4s var(--ease-spring);
        }
        .tool-docs-btn:hover {
            background: var(--accent-dim);
            border-color: var(--accent);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.14);
            transform: translateY(-2px) scale(1.03);
        }
        .tool-docs-btn:active,
        .tool-open-btn:active {
            transform: translateY(0) scale(0.97);
        }

        /* ===== DOCS MODAL ===== */
        .docs-overlay {
            position: fixed;
            inset: 0;
            z-index: 90;
            background: rgba(2, 6, 23, 0.6);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s var(--ease-out);
        }
        .docs-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .docs-modal {
            position: fixed;
            top: 50%;
            left: 50%;
            z-index: 95;
            width: min(640px, 92vw);
            max-height: min(78vh, 720px);
            display: flex;
            flex-direction: column;
            border-radius: var(--radius-card);
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            box-shadow: var(--drawer-shadow);
            backdrop-filter: blur(28px) saturate(1.5);
            -webkit-backdrop-filter: blur(28px) saturate(1.5);
            opacity: 0;
            visibility: hidden;
            transform: translate(-50%, -48%) scale(0.96);
            transition: opacity 0.35s var(--ease-spring), transform 0.35s var(--ease-spring), visibility 0.35s;
        }
        .docs-modal.active {
            opacity: 1;
            visibility: visible;
            transform: translate(-50%, -50%) scale(1);
        }

        .docs-modal-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            padding: 1.1rem 1.25rem;
            border-bottom: 1px solid var(--glass-border);
            flex-shrink: 0;
        }
        .docs-modal-heading {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            min-width: 0;
        }
        .docs-modal-heading h3 {
            margin: 0;
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .docs-modal-close {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 2.25rem;
            height: 2.25rem;
            flex-shrink: 0;
            border: none;
            border-radius: 10px;
            background: transparent;
            color: var(--text-soft);
            cursor: pointer;
            transition: all 0.25s var(--ease);
        }
        .docs-modal-close:hover {
            background: rgba(148, 163, 184, 0.14);
            color: var(--text-main);
            transform: rotate(90deg);
        }

        .docs-modal-body {
            padding: 1.25rem;
            overflow-y: auto;
            font-size: 0.85rem;
            line-height: 1.7;
            color: var(--text-soft);
        }
        .docs-modal-loading,
        .docs-modal-error {
            padding: 2rem 0.5rem;
            text-align: center;
            font-family: var(--font-mono);
            font-size: 0.75rem;
        }
        /* GitHub-flavored markdown rendering for README docs (via marked) */
        .docs-markdown h1,
        .docs-markdown h2,
        .docs-markdown h3,
        .docs-markdown h4,
        .docs-markdown h5,
        .docs-markdown h6 {
            margin: 1.1em 0 0.5em;
            font-family: var(--font-display);
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }
        .docs-markdown h1 {
            font-size: 1.3rem;
            padding-bottom: 0.35em;
            border-bottom: 1px solid var(--glass-border);
        }
        .docs-markdown h2 {
            font-size: 1.1rem;
            padding-bottom: 0.3em;
            border-bottom: 1px solid var(--glass-border);
        }
        .docs-markdown h3 { font-size: 1rem; }
        .docs-markdown h4 { font-size: 0.92rem; }
        .docs-markdown h5,
        .docs-markdown h6 { font-size: 0.85rem; }
        .docs-markdown p { margin: 0.6em 0; }
        .docs-markdown ul,
        .docs-markdown ol { margin: 0.6em 0; padding-left: 1.4em; }
        .docs-markdown li { margin: 0.25em 0; }
        .docs-markdown li > ul,
        .docs-markdown li > ol { margin: 0.25em 0; }
        .docs-markdown li.task-list-item { list-style: none; margin-left: -1.4em; padding-left: 1.4em; }
        .docs-markdown input[type="checkbox"] { margin-right: 0.4em; }
        .docs-markdown strong { color: var(--text-main); font-weight: 700; }
        .docs-markdown del { opacity: 0.65; }
        .docs-markdown a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
        .docs-markdown hr {
            margin: 1.25em 0;
            border: none;
            border-top: 1px solid var(--glass-border);
        }
        .docs-markdown blockquote {
            margin: 0.75em 0;
            padding: 0.4em 1em;
            border-left: 3px solid var(--accent-border);
            color: var(--text-soft);
            background: var(--accent-dim);
            border-radius: 0 8px 8px 0;
        }
        .docs-markdown blockquote p { margin: 0.3em 0; }
        .docs-markdown code {
            padding: 0.1em 0.4em;
            border-radius: 6px;
            background: rgba(148, 163, 184, 0.14);
            font-family: var(--font-mono);
            font-size: 0.82em;
        }
        .docs-markdown pre {
            margin: 0.75em 0;
            padding: 0.9em 1em;
            border-radius: 12px;
            background: rgba(2, 6, 23, 0.06);
            overflow-x: auto;
        }
        .dark .docs-markdown pre {
            background: rgba(148, 163, 184, 0.08);
        }
        .docs-markdown pre code {
            padding: 0;
            background: none;
        }
        /* Badges (shields.io etc.) sit inline, aligned with text baseline */
        .docs-markdown p img,
        .docs-markdown h1 img,
        .docs-markdown h2 img {
            display: inline-block;
            vertical-align: middle;
            max-width: 100%;
            height: auto;
            margin: 0.15em 0.2em 0.15em 0;
        }
        /* Standalone content images (not badges) get a bit more room */
        .docs-markdown p:has(> img:only-child) {
            display: block;
        }
        .docs-markdown p:has(> img:only-child) img {
            display: block;
            border-radius: 10px;
            margin: 0.5em 0;
        }
        .docs-markdown table {
            display: block;
            width: 100%;
            max-width: 100%;
            overflow-x: auto;
            border-collapse: collapse;
            border: 1px solid var(--glass-border);
            border-radius: 10px;
            font-size: 0.82rem;
        }
        .docs-markdown th,
        .docs-markdown td {
            padding: 0.5em 0.8em;
            border-bottom: 1px solid var(--glass-border);
            border-right: 1px solid var(--glass-border);
            text-align: left;
        }
        .docs-markdown th:last-child,
        .docs-markdown td:last-child { border-right: none; }
        .docs-markdown tr:last-child td { border-bottom: none; }
        .docs-markdown thead th {
            background: rgba(148, 163, 184, 0.1);
            font-family: var(--font-display);
            font-weight: 700;
            color: var(--text-main);
        }
        .docs-markdown-fallback {
            white-space: pre-wrap;
            word-break: break-word;
            font-family: var(--font-mono);
            font-size: 0.78rem;
            line-height: 1.6;
            color: var(--text-soft);
        }

        .docs-modal-footer {
            display: flex;
            justify-content: flex-end;
            padding: 1rem 1.25rem;
            border-top: 1px solid var(--glass-border);
            flex-shrink: 0;
        }

        @media (max-width: 640px) {
            .docs-modal {
                width: 94vw;
                max-height: 82vh;
            }
        }

        /* ===== FILTER BUTTONS ===== */
        .filter-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0.5rem 1.25rem;
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.25);
            color: #94a3b8;
            font-family: var(--font-mono);
            font-size: 0.65rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            cursor: pointer;
            transition: all 0.4s var(--ease-spring);
        }
        .dark .filter-btn {
            background: rgba(30, 41, 59, 0.25);
            border-color: rgba(255, 255, 255, 0.05);
        }
        .filter-btn.active {
            background: rgba(59, 130, 246, 0.18) !important;
            border-color: rgba(59, 130, 246, 0.3) !important;
            color: var(--accent) !important;
            box-shadow: 0 1px 1px rgba(59, 130, 246, 0.2) inset, 0 4px 20px rgba(59, 130, 246, 0.08);
        }
        .dark .filter-btn.active {
            background: rgba(59, 130, 246, 0.16) !important;
            border-color: rgba(59, 130, 246, 0.28) !important;
            box-shadow: 0 1px 1px rgba(59, 130, 246, 0.12) inset, 0 4px 24px rgba(59, 130, 246, 0.06);
        }

        /* ===== BADGES ===== */
        .status-badge-stable {
            padding: 0.125rem 0.625rem;
            border: 1px solid rgba(16, 185, 129, 0.18);
            border-radius: var(--radius-pill);
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
            font-family: var(--font-mono);
            font-size: 0.55rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .dark .status-badge-stable {
            background: rgba(16, 185, 129, 0.08);
            border-color: rgba(16, 185, 129, 0.12);
            color: #34d399;
        }

        /* ===== STATS ===== */
        .stat-number {
            color: var(--accent);
            font-family: var(--font-display);
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }

        /* ===== HERO ===== */
        .grid-bg {
            background-image: linear-gradient(rgba(59, 130, 246, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(59, 130, 246, 0.05) 1px, transparent 1px);
            background-size: 48px 48px;
            mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000000 25%, transparent 100%);
            -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000000 25%, transparent 100%);
        }
        .hero-spotlight {
            position: absolute;
            inset: 0;
            background: radial-gradient(600px circle at var(--x, 50%) var(--y, 30%), rgba(59, 130, 246, 0.14), transparent 65%);
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.6s ease;
        }
        .hero-spotlight.active {
            opacity: 1;
        }

        /* ===== ANIMATIONS ===== */
        .ticker-track {
            display: flex;
            gap: 48px;
            width: max-content;
            animation: ticker 30s linear infinite;
        }
        @keyframes ticker {
            from {
                transform: translateX(0);
            }
            to {
                transform: translateX(-50%);
            }
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(28px) scale(0.98);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        .animate-fade-up {
            animation: fadeUp 0.8s var(--ease-out) forwards;
        }
        .animate-fade-up-delay-1 {
            animation-delay: 0.05s;
        }
        .animate-fade-up-delay-2 {
            animation-delay: 0.15s;
        }
        .animate-fade-up-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-fade-up-delay-4 {
            animation-delay: 0.45s;
        }
        .animate-fade-up-delay-5 {
            animation-delay: 0.6s;
        }

        .reveal {
            opacity: 0;
            transform: translateY(32px) scale(0.98);
            transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0) scale(1);
        }

        .pulse-dot {
            animation: pulse-dot 2.4s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.3;
                transform: scale(0.6);
            }
        }

        .scroll-line {
            animation: scroll-anim 1.8s ease-in-out infinite;
        }
        @keyframes scroll-anim {
            0% {
                opacity: 0;
                transform: scaleY(0);
                transform-origin: top;
            }
            40% {
                opacity: 1;
                transform: scaleY(1);
                transform-origin: top;
            }
            60% {
                opacity: 1;
                transform: scaleY(1);
                transform-origin: bottom;
            }
            100% {
                opacity: 0;
                transform: scaleY(0);
                transform-origin: bottom;
            }
        }

        /* ===== SKIP LINK ===== */
        .skip-link {
            position: absolute;
            top: -100%;
            left: 12px;
            z-index: 9999;
            padding: 10px 20px;
            border-radius: 0 0 12px 12px;
            background: var(--accent);
            color: #ffffff;
            font-size: 0.8rem;
            font-weight: 700;
            text-decoration: none;
            transition: top 0.3s ease;
        }
        .skip-link:focus {
            top: 0;
        }

        /* ===== RAIA BUTTON ===== */
        #raia-button .tooltip {
            position: absolute;
            bottom: calc(100% + 14px);
            left: 50%;
            padding: 6px 16px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            background: rgba(15, 23, 42, 0.92);
            color: #f1f5f9;
            font-family: var(--font-sans);
            font-size: 0.7rem;
            font-weight: 500;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            transform: translateX(-50%) translateY(6px);
            transition: opacity 0.4s ease, transform 0.4s var(--ease-spring);
        }
        #raia-button:hover .tooltip {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        /* ===== BACK TO TOP ===== */
        #back-top {
            width: 48px;
            height: 48px;
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: 16px;
            background: rgba(59, 130, 246, 0.72);
            box-shadow: 0 1px 1px rgba(255, 255, 255, 0.25) inset, 0 8px 32px rgba(59, 130, 246, 0.25);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            cursor: pointer;
            transition: all 0.5s var(--ease-spring);
        }
        #back-top:hover {
            background: rgba(59, 130, 246, 0.9);
            box-shadow: 0 12px 40px rgba(59, 130, 246, 0.4);
            transform: translateY(-4px) scale(1.06);
        }
        .dark #back-top {
            background: rgba(59, 130, 246, 0.55);
            border-color: rgba(255, 255, 255, 0.06);
            box-shadow: 0 8px 32px rgba(59, 130, 246, 0.15);
        }
        .dark #back-top:hover {
            background: rgba(59, 130, 246, 0.78);
            box-shadow: 0 12px 40px rgba(59, 130, 246, 0.25);
        }

        /* ===== COOKIE BANNER ===== */
        .cookie-banner {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 9998;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            padding: 1rem 1.5rem;
            border-top: 1px solid rgba(59, 130, 246, 0.18);
            background: rgba(2, 6, 23, 0.94);
            backdrop-filter: blur(var(--glass-blur));
            -webkit-backdrop-filter: blur(var(--glass-blur));
            box-shadow: 0 -8px 48px rgba(0, 0, 0, 0.5);
            transform: translateY(100%);
            transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
        }
        .cookie-banner.show {
            transform: translateY(0);
        }
        .cookie-banner .text a {
            color: var(--accent);
            font-weight: 600;
            text-decoration: none;
        }
        .cookie-banner .text a:hover {
            color: #60a5fa;
            text-decoration: underline;
        }
        .cookie-banner .actions .cbtn {
            padding: 0.4rem 1.2rem;
            border: 1px solid rgba(59, 130, 246, 0.18);
            border-radius: var(--radius-pill);
            background: transparent;
            color: #f1f5f9;
            font-family: var(--font-sans);
            font-size: 0.65rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            cursor: pointer;
            transition: all 0.4s var(--ease-spring);
        }
        .cookie-banner .actions .cbtn.primary {
            background: var(--accent);
            border-color: var(--accent);
            color: #ffffff;
        }
        .cookie-banner .actions .cbtn.primary:hover {
            background: #60a5fa;
            border-color: #60a5fa;
            box-shadow: 0 0 28px rgba(59, 130, 246, 0.3);
        }

        /* ===== FORM ===== */
        input:focus,
        textarea:focus {
            border-color: rgba(59, 130, 246, 0.3);
            outline: none;
            box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12);
        }
        .input-error {
            border-color: #ef4444 !important;
        }
        .input-error:focus {
            box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12) !important;
        }
        .form-error {
            display: block;
            min-height: 1.2rem;
            margin-top: 4px;
            color: #ef4444;
            font-size: 0.7rem;
            font-weight: 500;
        }

        /* ===== TOAST ===== */
        .toast {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 22px;
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.7);
            color: #0f172a;
            font-size: 0.8rem;
            font-weight: 500;
            opacity: 0;
            pointer-events: none;
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
            transform: translateY(16px) scale(0.94);
            transition: transform 0.5s var(--ease-spring), opacity 0.5s ease;
        }
        .dark .toast {
            background: rgba(15, 23, 42, 0.75);
            border-color: rgba(255, 255, 255, 0.06);
            color: #f1f5f9;
            box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
        }
        .toast.show {
            opacity: 1;
            transform: translateY(0) scale(1);
        }

        /* ===== UTILITY ===== */
        .written-by-human {
            display: block;
            margin: 18px auto 0;
            border: 0;
            width: 120px;
            height: auto;
        }
        .footer-disclaimer {
            font-size: 11px;
            line-height: 1.6;
            color: #94a3b8;
        }
        .dark .footer-disclaimer {
            color: #64748b;
        }

        /* ===== SCROLLBAR ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: transparent;
        }
        ::-webkit-scrollbar-thumb {
            border-radius: 12px;
            background: rgba(59, 130, 246, 0.25);
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(59, 130, 246, 0.4);
        }
        .dark ::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.08);
        }
        .dark ::-webkit-scrollbar-thumb:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 640px) {
            .music-iframe-wrap iframe {
                height: 480px !important;
            }
            .glass-card {
                border-radius: 1.25rem;
            }
            .btn-primary,
            .btn-secondary {
                min-width: 100%;
                padding: 14px 20px;
            }
            #menu-btn,
            .theme-btn {
                width: 48px;
                height: 48px;
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .music-iframe-wrap iframe {
                height: 400px !important;
            }
            #raia-button {
                bottom: 20px;
                left: 20px;
                right: auto;
                width: 52px;
                height: 52px;
                border-radius: 16px;
            }
            #raia-button .tooltip {
                display: none;
            }
        }

        /* ===== REDUCED MOTION ===== */
        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1 !important;
                transform: none !important;
                transition: none !important;
            }
            .ticker-track,
            .pulse-dot,
            .scroll-line,
            .animate-fade-up {
                animation: none !important;
                opacity: 1 !important;
            }
            #nav-drawer {
                transition: opacity 0.15s ease !important;
                transform: none !important;
            }
            #nav-drawer.open {
                opacity: 1 !important;
            }
            #nav-drawer:not(.open) {
                opacity: 0 !important;
                pointer-events: none !important;
            }
            #raia-button:hover,
            .glass-social:hover,
            .glass-card.glass-hover:hover,
            .btn-primary:hover,
            .btn-secondary:hover,
            .tool-open-btn:hover,
            .tool-docs-btn:hover {
                transform: none !important;
            }
            .hero-spotlight {
                display: none;
            }
            .docs-modal {
                transition: opacity 0.15s ease !important;
                transform: translate(-50%, -50%) scale(1) !important;
            }
        }
        @media (pointer: coarse) {
            .hero-spotlight {
                display: none;
            }
        }