/* ===== CSS Variables - Premium Edition ===== */
:root {
    /* Colors - Premium gradient palette */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #8b5cf6;
    --color-accent: #ec4899;

    /* Text */
    --color-text: #0f172a;
    --color-text-light: #475569;
    --color-text-lighter: #64748b;

    /* Backgrounds */
    --color-bg: #ffffff;
    --color-bg-light: #f8fafc;
    --color-bg-lighter: #f1f5f9;
    --color-bg-card: rgba(255, 255, 255, 0.9);
    --color-border: #e2e8f0;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-premium: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #667eea 100%);
    --gradient-text: linear-gradient(135deg, #667eea, #764ba2);

    /* Shadows - More dramatic */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.16);
    --shadow-2xl: 0 32px 80px rgba(0, 0, 0, 0.20);
    --shadow-colored: 0 12px 48px rgba(102, 126, 234, 0.25);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Inter', system-ui, sans-serif;

    /* Border radius */
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-2xl: 40px;

    /* Transitions */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: 'kern' 1, 'liga' 1, 'calt' 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation - Premium ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: var(--transition);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 21px;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: translateY(-1px);
}

.logo img {
    transition: var(--transition);
}

.logo:hover img {
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* ===== Language Switcher ===== */
.language-switcher {
    position: relative;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    transition: var(--transition);
}

.language-btn:hover {
    background: var(--color-bg);
    border-color: var(--color-primary);
}

.language-flag {
    font-size: 16px;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown button {
    display: block;
    width: 100%;
    padding: 12px 16px;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: 14px;
    color: var(--color-text);
    transition: var(--transition);
}

.language-dropdown button:hover {
    background: var(--color-bg-light);
}

.language-dropdown button:first-child {
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.language-dropdown button:last-child {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

/* ===== Mobile Menu ===== */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== Buttons - Premium ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    background-size: 200% auto;
    color: white;
    box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5);
    font-weight: 700;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 16px 48px rgba(99, 102, 241, 0.6);
    background-position: right center;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-bg-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: 20px 48px;
    font-size: 18px;
    font-weight: 700;
    border-radius: 16px;
}

/* ===== Hero Section - Premium ===== */
.hero {
    position: relative;
    padding: 200px 0 160px;
    overflow: hidden;
    background: linear-gradient(180deg, #fafbff 0%, #ffffff 100%);
}

.hero-gradient {
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 140%;
    height: 800px;
    background: radial-gradient(ellipse at 50% 0%, rgba(102, 126, 234, 0.15), transparent 60%);
    pointer-events: none;
    animation: pulse-gradient 8s ease-in-out infinite;
}

@keyframes pulse-gradient {
    0%, 100% { opacity: 1; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.8; transform: translateX(-50%) scale(1.05); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 72px;
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 32px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #0f172a 0%, #6366f1 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

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

.hero-subtitle {
    font-size: 22px;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: 48px;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: 20px;
    margin-bottom: 32px;
}

.hero-platforms {
    font-size: 16px;
    color: var(--color-text-lighter);
    font-weight: 500;
}

.hero-platforms .separator {
    margin: 0 12px;
    opacity: 0.4;
}

.hero-visual {
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
    filter: drop-shadow(var(--shadow-2xl));
}

/* ===== App Mockup - Premium ===== */
.app-mockup {
    position: relative;
    transform-style: preserve-3d;
    perspective: 2000px;
}

.mockup-window {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow:
        0 50px 100px rgba(0, 0, 0, 0.15),
        0 20px 60px rgba(102, 126, 234, 0.2);
    overflow: hidden;
    border: 1px solid rgba(226, 232, 240, 0.6);
    transition: var(--transition-slow);
}

.mockup-window:hover {
    transform: translateY(-8px) rotateX(2deg);
    box-shadow:
        0 60px 120px rgba(0, 0, 0, 0.18),
        0 30px 70px rgba(102, 126, 234, 0.25);
}

.mockup-header {
    display: flex;
    align-items: center;
    padding: 20px 24px;
    background: linear-gradient(180deg, #fafbff 0%, #f8fafc 100%);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.mockup-dots {
    display: flex;
    gap: 10px;
    margin-right: auto;
}

.mockup-dots span {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.mockup-dots span:nth-child(1) {
    background: linear-gradient(135deg, #fca5a5 0%, #ef4444 100%);
}

.mockup-dots span:nth-child(2) {
    background: linear-gradient(135deg, #fcd34d 0%, #f59e0b 100%);
}

.mockup-dots span:nth-child(3) {
    background: linear-gradient(135deg, #86efac 0%, #22c55e 100%);
}

.mockup-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
}

.mockup-content {
    display: flex;
    height: 450px;
    background: white;
}

.mockup-sidebar {
    width: 240px;
    background: linear-gradient(180deg, #fafbff 0%, #f8fafc 100%);
    border-right: 1px solid rgba(226, 232, 240, 0.8);
    padding: 20px;
}

.sidebar-item {
    padding: 14px 16px;
    margin-bottom: 6px;
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--color-text-light);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.8);
}

.sidebar-item.active {
    background: white;
    color: var(--color-primary);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.15);
}

.mockup-editor {
    flex: 1;
    padding: 48px;
    background: white;
}

.editor-line {
    height: 18px;
    background: linear-gradient(90deg, #f1f5f9 0%, #e2e8f0 100%);
    border-radius: 6px;
    margin-bottom: 16px;
    animation: pulse-subtle 3s ease-in-out infinite;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.editor-line.short {
    width: 65%;
}

@keyframes pulse-subtle {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.editor-line:nth-child(1) { animation-delay: 0s; }
.editor-line:nth-child(2) { animation-delay: 0.3s; }
.editor-line:nth-child(3) { animation-delay: 0.6s; }

/* ===== Early Access ===== */
.early-access {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8eeff 100%);
    border-top: 1px solid #e0e7ff;
    border-bottom: 1px solid #e0e7ff;
}

.early-access-content {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.early-access-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.early-access-title {
    font-size: 36px;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 16px;
    line-height: 1.2;
}

.early-access-subtitle {
    font-size: 18px;
    color: #64748b;
    line-height: 1.6;
}

/* ===== Section Header - Premium ===== */
.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #0f172a 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Why Section ===== */
.why-section {
    padding: 160px 0;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.why-item {
    display: flex;
    gap: 20px;
}

.why-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.why-item p {
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-text-light);
}

/* ===== Features - Premium ===== */
.features {
    padding: 180px 0;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    position: relative;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    height: 400px;
    background: radial-gradient(ellipse at 50% 0%, rgba(139, 92, 246, 0.08), transparent 60%);
    pointer-events: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    position: relative;
    z-index: 1;
}

.feature-card {
    padding: 40px 32px;
    background: white;
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: var(--transition-slow);
    cursor: default;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-colored);
    border-color: rgba(102, 126, 234, 0.3);
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.feature-card h3 {
    font-size: 21px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 16px;
    line-height: 1.65;
    color: var(--color-text-light);
}

/* ===== How It Works ===== */
.how-it-works {
    padding: 160px 0;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
}

.step {
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    font-size: 28px;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 24px;
}

.step h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.step p {
    font-size: 16px;
    color: var(--color-text-light);
}

/* ===== Your Files ===== */
.your-files {
    padding: 160px 0;
    background: var(--color-bg-light);
}

.files-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.files-text h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 24px;
}

.files-text p {
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-text-light);
}

.folder-structure {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
}

.folder-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    font-size: 15px;
    color: var(--color-text);
}

.folder-item.indent {
    padding-left: 32px;
}

.folder-icon, .file-icon {
    font-size: 18px;
}

/* ===== Downloads - Premium ===== */
.downloads {
    padding: 180px 0;
    background: linear-gradient(180deg, #ffffff 0%, #fafbff 100%);
    position: relative;
}

.downloads::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    height: 400px;
    background: radial-gradient(ellipse at 50% 100%, rgba(102, 126, 234, 0.1), transparent 60%);
    pointer-events: none;
}

.downloads-subtitle {
    text-align: center;
    font-size: 20px;
    color: var(--color-text-light);
    margin-top: 20px;
    margin-bottom: 72px;
    font-weight: 500;
}

.downloads-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 36px;
    position: relative;
    z-index: 1;
}

.download-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 56px 40px;
    background: white;
    border: 2px solid rgba(226, 232, 240, 0.8);
    border-radius: var(--radius-xl);
    text-decoration: none;
    transition: var(--transition-slow);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    opacity: 0;
    transition: var(--transition);
}

.download-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-colored);
}

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

.download-icon {
    width: 96px;
    height: 96px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-xl);
    color: white;
    margin-bottom: 32px;
    box-shadow: 0 12px 32px rgba(102, 126, 234, 0.3);
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.download-card:hover .download-icon {
    transform: scale(1.1) rotate(-5deg);
    box-shadow: 0 16px 40px rgba(102, 126, 234, 0.4);
}

.download-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.download-info {
    font-size: 15px;
    color: var(--color-text-lighter);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.download-specs {
    font-size: 13px;
    color: #94a3b8;
    margin-top: 8px;
    position: relative;
    z-index: 1;
}

.download-card.coming-soon {
    cursor: default;
    opacity: 0.85;
}

.download-card.coming-soon:hover {
    transform: translateY(-4px);
    border-color: #e2e8f0;
}

.download-card.coming-soon .download-icon {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
}

.download-card.coming-soon:hover .download-icon {
    transform: scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.download-notify {
    margin-top: 48px;
    text-align: center;
    padding: 32px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.download-notify p {
    font-size: 16px;
    color: #475569;
    margin-bottom: 16px;
    font-weight: 500;
}

.download-notify .btn {
    display: inline-block;
}

/* ===== FAQ ===== */
.faq {
    padding: 160px 0;
    background: var(--color-bg-light);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    padding: 32px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
}

.faq-item h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.faq-item p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-light);
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 40px;
    background: var(--color-text);
    color: white;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.6);
    font-size: 15px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 15px;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

/* ===== Scroll Animations ===== */
[data-scroll] {
    opacity: 0;
    transform: translateY(60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-scroll].visible {
    opacity: 1;
    transform: translateY(0);
}

/* Fade in from left */
[data-scroll-left] {
    opacity: 0;
    transform: translateX(-60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-scroll-left].visible {
    opacity: 1;
    transform: translateX(0);
}

/* Fade in from right */
[data-scroll-right] {
    opacity: 0;
    transform: translateX(60px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-scroll-right].visible {
    opacity: 1;
    transform: translateX(0);
}

/* Scale in */
[data-scroll-scale] {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-scroll-scale].visible {
    opacity: 1;
    transform: scale(1);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-title {
        font-size: 48px;
    }

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

    .why-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 820px) {
    .hero-title {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 19px;
    }

    .feature-content {
        gap: 48px;
    }

    .downloads-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .nav-content {
        height: 64px;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(24px);
        flex-direction: column;
        gap: 0;
        padding: 24px 0;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links a {
        padding: 16px 24px;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-actions {
        gap: 12px;
    }

    .nav-actions .btn {
        display: none;
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

    .steps {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .files-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 48px;
    }

    .footer-links {
        gap: 48px;
    }

    .section-header h2 {
        font-size: 36px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 32px;
    }

    .mockup-content {
        height: 300px;
    }

    .mockup-sidebar {
        width: 150px;
    }
}