/* ============================================
   CSS Variables & Design Tokens
   ============================================ */
:root {
    /* Colors */
    --color-bg: #050507;
    --color-bg-secondary: #0a0a0f;
    --color-surface: #111118;
    --color-surface-hover: #1a1a24;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-text: #f0f0f5;
    --color-text-secondary: #8a8a9a;
    --color-text-tertiary: #55556a;
    --color-accent: #2563eb;
    --color-accent-hover: #3b82f6;
    --color-accent-glow: rgba(37, 99, 235, 0.2);
    --gradient-primary: linear-gradient(135deg, #1d4ed8, #2563eb, #3b82f6);
    --gradient-subtle: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.1));

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 200ms;
    --duration-normal: 400ms;
    --duration-slow: 600ms;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-accent-glow);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

img {
    max-width: 100%;
    display: block;
}

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

/* Noise overlay for texture */
.noise-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes line-expand {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

.animate-fade-in {
    animation: fadeIn var(--duration-slow) var(--ease-out) forwards;
    opacity: 0;
}

.animate-fade-in-up {
    animation: fadeInUp var(--duration-slow) var(--ease-out) forwards;
    opacity: 0;
}

.animate-fade-in-scale {
    animation: fadeInScale var(--duration-slow) var(--ease-out) forwards;
    opacity: 0;
}

.delay-1 { animation-delay: 150ms; }
.delay-2 { animation-delay: 300ms; }
.delay-3 { animation-delay: 450ms; }
.delay-4 { animation-delay: 600ms; }

/* Scroll-triggered animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-4) 0;
    transition: background var(--duration-normal) var(--ease-out),
                backdrop-filter var(--duration-normal) var(--ease-out);
}

.nav.scrolled {
    background: rgba(5, 5, 7, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-border);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 600;
    font-size: var(--font-size-lg);
    transition: opacity var(--duration-fast) var(--ease-out);
}

.nav-logo:hover {
    opacity: 0.8;
}

.nav-logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-lg);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) var(--ease-out);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--duration-fast) var(--ease-out);
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ============================================
   Hero Section (Home)
   ============================================ */
.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-24) var(--space-6) var(--space-16);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-5);
    background: var(--gradient-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-accent-hover);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--space-8);
}

.hero-title {
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
}

.gradient-text {
    background: var(--gradient-primary);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-shift 6s ease infinite;
}

.hero-subtitle {
    font-size: clamp(var(--font-size-lg), 2.5vw, var(--font-size-xl));
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
    font-weight: 300;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-accent-glow), transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse-glow 4s ease-in-out infinite;
    pointer-events: none;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    margin-bottom: var(--space-12);
    text-align: center;
}

.section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-4);
}

.section-line {
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
    margin: 0 auto;
    border-radius: var(--radius-full);
}

/* ============================================
   Apps Grid (Home Page)
   ============================================ */
.apps-section {
    padding: 0 0 var(--space-24);
}

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-8);
}

.app-card {
    position: relative;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: transform var(--duration-normal) var(--ease-spring),
                border-color var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
}

.app-card.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out),
                border-color var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
}

.app-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.app-card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-secondary);
}

.app-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out);
}

.app-card:hover .app-card-image img {
    transform: scale(1.05);
}

.app-card-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--color-surface) 0%, transparent 50%);
    pointer-events: none;
}

.app-card-body {
    padding: var(--space-6) var(--space-6) var(--space-8);
}

.app-card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    margin-top: -44px;
    position: relative;
    z-index: 2;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--color-surface);
}

.app-card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-top: var(--space-4);
    letter-spacing: -0.01em;
}

.app-card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.app-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.app-card-tag {
    font-size: var(--font-size-xs);
    padding: var(--space-1) var(--space-3);
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: var(--radius-full);
    color: var(--color-accent-hover);
    font-weight: 500;
}

.app-card-arrow {
    position: absolute;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--gradient-subtle);
    border: 1px solid var(--color-border);
    color: var(--color-accent-hover);
    transition: transform var(--duration-fast) var(--ease-spring),
                background var(--duration-fast) var(--ease-out);
}

.app-card:hover .app-card-arrow {
    transform: translateX(4px);
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
}

/* ============================================
   App Hero (Detail Page)
   ============================================ */
.app-hero {
    position: relative;
    padding: calc(var(--space-24) + var(--space-8)) var(--space-6) var(--space-16);
    overflow: hidden;
}

.app-hero-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.app-hero-info {
    max-width: 600px;
}

.app-icon {
    width: 96px;
    height: 96px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.app-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-top: var(--space-6);
}

.app-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-top: var(--space-4);
    font-weight: 300;
    line-height: 1.6;
}

.app-actions {
    margin-top: var(--space-8);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    font-family: var(--font-family);
    border: none;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px var(--color-accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 40px var(--color-accent-glow);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-border-hover);
    background: var(--color-surface-hover);
}

/* ============================================
   Screenshots Section
   ============================================ */
.screenshots-section {
    padding: var(--space-16) 0;
}

.screenshots-carousel {
    display: flex;
    gap: var(--space-6);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: var(--space-4) var(--space-2);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.screenshots-carousel::-webkit-scrollbar {
    display: none;
}

.screenshot-item {
    flex-shrink: 0;
    scroll-snap-align: center;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-out);
    opacity: 0;
    transform: translateY(20px);
}

.screenshot-item.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.screenshot-item:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.screenshot-item img {
    height: 500px;
    width: auto;
    display: block;
}

/* Scroll indicators */
.screenshots-section .container {
    position: relative;
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    padding: var(--space-16) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-spring);
    opacity: 0;
    transform: translateY(20px);
}

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

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

.feature-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-4);
    display: block;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-subtle);
    border-radius: var(--radius-md);
}

.feature-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.feature-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   Description Section
   ============================================ */
.description-section {
    padding: var(--space-16) 0;
}

.description-content {
    max-width: 700px;
    margin: 0 auto;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.description-content p {
    margin-bottom: var(--space-6);
}

/* ============================================
   Legal Pages
   ============================================ */
.legal-page {
    padding: calc(var(--space-24) + var(--space-8)) 0 var(--space-24);
    min-height: 80vh;
}

.legal-header {
    margin-bottom: var(--space-12);
}

.legal-back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-accent-hover);
    margin-bottom: var(--space-6);
    transition: color var(--duration-fast) var(--ease-out);
}

.legal-back:hover {
    color: var(--color-accent);
}

.legal-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    font-weight: 800;
    letter-spacing: -0.03em;
}

.legal-updated {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--space-3);
}

.legal-content {
    max-width: 800px;
}

.legal-content h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin: var(--space-10) 0 var(--space-4);
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-4);
}

.legal-content ul {
    list-style: none;
    margin: var(--space-4) 0;
    padding: 0;
}

.legal-content ul li {
    position: relative;
    padding-left: var(--space-6);
    margin-bottom: var(--space-3);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.legal-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
}

.legal-content a {
    color: var(--color-accent-hover);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--duration-fast) var(--ease-out);
}

.legal-content a:hover {
    color: var(--color-accent);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--space-12) 0;
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.footer-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) var(--ease-out);
}

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

.footer-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* ============================================
   Sidebar
   ============================================ */
.sidebar-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.sidebar-toggle:hover {
    color: var(--color-text);
    border-color: var(--color-border-hover);
    background: var(--color-surface-hover);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-normal) var(--ease-out),
                visibility var(--duration-normal) var(--ease-out);
}

.sidebar-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 360px;
    max-width: 90vw;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    z-index: 201;
    transform: translateX(100%);
    transition: transform var(--duration-normal) var(--ease-out);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar.is-open {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.sidebar-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
}

.sidebar-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out);
}

.sidebar-close:hover {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border-hover);
}

.sidebar-apps {
    padding: var(--space-4);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.sidebar-app {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    transition: all var(--duration-fast) var(--ease-out);
    border: 1px solid transparent;
}

.sidebar-app:hover {
    background: var(--color-surface);
    border-color: var(--color-border);
}

.sidebar-app.is-active {
    background: var(--gradient-subtle);
    border-color: rgba(37, 99, 235, 0.2);
}

.sidebar-app-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.sidebar-app-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-app-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-app-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-app-arrow {
    flex-shrink: 0;
    color: var(--color-text-tertiary);
    transition: transform var(--duration-fast) var(--ease-spring);
}

.sidebar-app:hover .sidebar-app-arrow {
    transform: translateX(3px);
    color: var(--color-accent-hover);
}

.sidebar-home {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--duration-fast) var(--ease-out);
}

.sidebar-home:hover {
    color: var(--color-accent-hover);
}

/* ============================================
   Loading State
   ============================================ */
.loading-skeleton {
    background: linear-gradient(90deg, var(--color-surface) 25%, var(--color-surface-hover) 50%, var(--color-surface) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--space-20) var(--space-6);
}

.empty-state-icon {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--space-6);
    opacity: 0.3;
}

.empty-state-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-tertiary);
}

/* ============================================
   404 Page
   ============================================ */
.not-found {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.not-found h1 {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.not-found p {
    color: var(--color-text-secondary);
    margin-top: var(--space-4);
}

.not-found a {
    display: inline-block;
    margin-top: var(--space-6);
    color: var(--color-accent-hover);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .hero {
        min-height: 60vh;
        padding: var(--space-20) var(--space-4) var(--space-12);
    }

    .apps-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .screenshot-item img {
        height: 400px;
    }

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

    .app-hero {
        padding: calc(var(--space-20) + var(--space-4)) var(--space-4) var(--space-12);
    }

    .app-icon {
        width: 72px;
        height: 72px;
    }

    .nav-links {
        gap: var(--space-4);
    }

    .sidebar-toggle span {
        display: none;
    }

    .sidebar-toggle {
        padding: var(--space-2);
    }
}

@media (max-width: 480px) {
    .hero-badge {
        font-size: var(--font-size-xs);
    }

    .screenshot-item img {
        height: 340px;
    }

    .app-card-image {
        aspect-ratio: 16 / 9;
    }
}

/* ============================================
   Custom Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-surface-hover);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}

/* ============================================
   Selection
   ============================================ */
::selection {
    background: rgba(37, 99, 235, 0.3);
    color: var(--color-text);
}