/* ============================================
   SmartSend Landing Page - Modern & Minimal
   ============================================ */

/* CSS Variables */
:root {
    --color-bg: #000000;
    --color-bg-secondary: #0a0a0a;
    --color-bg-card: #111111;
    --color-border: #222222;
    --color-text: #ffffff;
    --color-text-secondary: #888888;
    --color-text-muted: #555555;
    --color-primary: #0078D4;
    --color-primary-dim: #005a9e;
    --color-primary-light: #3399ff;
    --color-success: #10b981;
    --color-error: #ef4444;
    --gradient-primary: linear-gradient(135deg, #0078D4 0%, #00c6ff 100%);
    --gradient-text: linear-gradient(135deg, #0078D4 0%, #00c6ff 50%, #0078D4 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 60px rgba(0, 120, 212, 0.3);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    height: auto;
}

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

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.nav.scrolled {
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    font-size: 24px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: var(--transition);
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-cta {
    padding: 10px 20px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--color-primary-dim);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 24px;
    flex-direction: column;
    gap: 16px;
    z-index: 999;
}

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

.mobile-menu a {
    font-size: 16px;
    font-weight: 500;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.mobile-cta {
    text-align: center;
    padding: 14px 24px !important;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    border: none !important;
    margin-top: 8px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    padding: 160px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 120, 212, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 120, 212, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 120, 212, 0.1);
    border: 1px solid rgba(0, 120, 212, 0.3);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-primary-light);
    margin-bottom: 32px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient-text);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
}

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

.hero-subtitle {
    max-width: 640px;
    margin: 0 auto 40px;
    font-size: 18px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    padding: 14px 28px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm), 0 0 20px rgba(0, 120, 212, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md), 0 0 40px rgba(0, 120, 212, 0.4);
}

.btn-secondary {
    padding: 14px 28px;
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.btn-secondary:hover {
    background: var(--color-bg-card);
    border-color: var(--color-text-muted);
}

.btn-large {
    padding: 18px 36px;
    font-size: 16px;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--color-text);
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Image / App Preview */
.hero-image {
    margin-top: 80px;
    display: flex;
    justify-content: center;
    perspective: 1000px;
}

.app-preview {
    max-width: 900px;
    width: 100%;
}

.app-window {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transform: rotateX(5deg);
    transition: var(--transition);
}

.app-window:hover {
    transform: rotateX(0);
}

.window-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.window-dots {
    display: flex;
    gap: 8px;
}

.window-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
}

.window-dots span:nth-child(1) { background: #ff5f57; }
.window-dots span:nth-child(2) { background: #ffbd2e; }
.window-dots span:nth-child(3) { background: #28c840; }

.window-title {
    flex: 1;
    text-align: center;
    font-size: 13px;
    color: var(--color-text-muted);
}

.window-content {
    display: flex;
    min-height: 400px;
}

.sidebar-preview {
    width: 200px;
    padding: 20px;
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
}

.sidebar-item {
    height: 48px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    opacity: 0.5;
}

.sidebar-item.active {
    opacity: 1;
    background: var(--color-primary);
}

.main-preview {
    flex: 1;
    padding: 20px;
}

.preview-header {
    height: 32px;
    width: 200px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
}

.preview-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.preview-tabs .tab {
    height: 32px;
    width: 80px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    opacity: 0.5;
}

.preview-tabs .tab.active {
    opacity: 1;
    background: var(--color-primary);
}

.preview-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-line {
    height: 40px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    opacity: 0.3;
}

.form-line.short {
    width: 60%;
}

.form-area {
    height: 150px;
    background: var(--color-border);
    border-radius: var(--radius-sm);
    opacity: 0.3;
}

/* ============================================
   Trust Section
   ============================================ */
.trust-section {
    padding: 60px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-secondary);
}

.trust-text {
    text-align: center;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.trust-badges {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.trust-badge svg {
    color: var(--color-primary);
}

/* ============================================
   Section Styles
   ============================================ */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 64px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(0, 120, 212, 0.1);
    border: 1px solid rgba(0, 120, 212, 0.2);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-primary-light);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: 120px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition);
}

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

.feature-card.featured {
    grid-column: span 2;
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.1) 0%, transparent 50%);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(0, 120, 212, 0.1);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--color-primary);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.feature-list {
    list-style: none;
    margin-top: 20px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.feature-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ============================================
   Benefits Section
   ============================================ */
.benefits {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

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

.benefits-content {
    max-width: 500px;
}

.benefits-content .section-badge {
    margin-bottom: 16px;
}

.benefits-content .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.benefits-text {
    font-size: 16px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 40px;
}

.benefit-items {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.benefit-item {
    display: flex;
    gap: 16px;
}

.benefit-check {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    color: var(--color-success);
}

.benefit-text h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.benefit-text p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* Comparison Cards */
.benefits-comparison {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comparison-card {
    position: relative;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
}

.comparison-card.featured {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.comparison-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    padding: 6px 12px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.comparison-header h4 {
    font-size: 18px;
    font-weight: 600;
}

.comparison-header.bad .comparison-icon {
    color: var(--color-error);
}

.comparison-header.good .comparison-icon {
    color: var(--color-success);
}

.comparison-list {
    list-style: none;
    margin-bottom: 20px;
}

.comparison-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.comparison-list li::before {
    font-size: 14px;
}

.comparison-list li.bad::before {
    content: '✕';
    color: var(--color-error);
}

.comparison-list li.good::before {
    content: '✓';
    color: var(--color-success);
}

.comparison-price {
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.comparison-price .price-amount {
    font-size: 28px;
    font-weight: 800;
}

.comparison-price .price-period {
    font-size: 14px;
    color: var(--color-text-muted);
    margin-left: 4px;
}

.comparison-price.featured .price-amount {
    color: var(--color-primary);
}

/* ============================================
   How It Works
   ============================================ */
.how-it-works {
    padding: 120px 0;
}

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    text-align: center;
    padding: 32px 24px;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 20px;
    font-weight: 800;
    margin-bottom: 20px;
}

.step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.step-arrow {
    color: var(--color-border);
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    padding: 120px 0;
    background: var(--color-bg-secondary);
}

.pricing-card {
    max-width: 480px;
    margin: 0 auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-header p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.pricing-price {
    padding: 40px 0;
    border-bottom: 1px solid var(--color-border);
}

.pricing-price .currency {
    font-size: 32px;
    font-weight: 600;
    vertical-align: top;
    color: var(--color-primary);
}

.pricing-price .amount {
    font-size: 72px;
    font-weight: 800;
    line-height: 1;
    color: var(--color-primary);
}

.pricing-price .period {
    display: block;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-top: 8px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    padding: 32px 0;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
}

.pricing-features svg {
    flex-shrink: 0;
    color: var(--color-success);
}

.pricing-card .btn {
    margin-bottom: 20px;
}

.pricing-guarantee {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    color: var(--color-text-muted);
}

.pricing-guarantee svg {
    color: var(--color-success);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq {
    padding: 120px 0;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.faq-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--color-text-muted);
}

.faq-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}

.faq-item p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ============================================
   Final CTA
   ============================================ */
.final-cta {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 120, 212, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content > p {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.cta-note {
    margin-top: 20px;
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 280px;
}

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

.footer-brand p {
    font-size: 14px;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h5 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text);
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    font-size: 14px;
    color: var(--color-text-secondary);
    padding: 6px 0;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-text-muted);
}

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

    .benefits-content {
        max-width: 100%;
        text-align: center;
    }

    .benefits-content .section-title {
        text-align: center;
    }

    .feature-card.featured {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-cta,
    .nav-right {
        display: none;
    }

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

    .hero {
        padding: 140px 0 60px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .hero-image {
        margin-top: 60px;
    }

    .app-window {
        transform: none;
    }

    .window-content {
        flex-direction: column;
    }

    .sidebar-preview {
        width: 100%;
        display: flex;
        gap: 8px;
        padding: 12px;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .sidebar-item {
        flex: 1;
        margin: 0;
    }

    .steps {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .benefits-comparison {
        gap: 16px;
    }
}

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

    .hero-cta {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .trust-badges {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

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

    .pricing-card {
        padding: 32px 24px;
    }

    .pricing-price .amount {
        font-size: 56px;
    }

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

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

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

/* Smooth scroll offset for fixed nav */
html {
    scroll-padding-top: 100px;
}

/* ============================================
   Language Switcher
   ============================================ */
.lang-switcher {
    position: relative;
    margin-left: 16px;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
    font-family: var(--font-sans);
}

.lang-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-text-muted);
}

.lang-flag {
    font-size: 16px;
    line-height: 1;
}

.lang-code {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.lang-btn svg {
    width: 12px;
    height: 12px;
    color: var(--color-text-muted);
    transition: var(--transition);
}

.lang-switcher.open .lang-btn svg {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 140px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    z-index: 1001;
}

.lang-switcher.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 14px;
    background: none;
    border: none;
    font-size: 14px;
    font-family: var(--font-sans);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.lang-option:hover {
    background: rgba(0, 120, 212, 0.1);
    color: var(--color-text);
}

.lang-option.active {
    background: rgba(0, 120, 212, 0.15);
    color: var(--color-primary-light);
}

.lang-option:first-child {
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

/* Mobile Language Switcher */
.mobile-lang-switcher {
    display: flex;
    gap: 8px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 8px;
}

.mobile-lang-switcher .lang-option {
    flex: 1;
    justify-content: center;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.mobile-lang-switcher .lang-option:hover,
.mobile-lang-switcher .lang-option.active {
    border-color: var(--color-primary);
}

/* ============================================
   Video Demo Section
   ============================================ */
.video-section {
    padding: 80px 0;
    background: var(--color-bg-secondary);
}

.video-container {
    max-width: 900px;
    margin: 0 auto;
}

.video-header {
    text-align: center;
    margin-bottom: 40px;
}

.video-header h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 16px;
}

.video-header p {
    font-size: 16px;
    color: var(--color-text-secondary);
}

.video-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border: 1px solid var(--color-border);
}

.video-placeholder {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(ellipse 50% 50% at 50% 50%, rgba(0, 120, 212, 0.1) 0%, transparent 70%),
        linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg) 100%);
}

.play-button {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md), 0 0 40px rgba(0, 120, 212, 0.4);
    transition: var(--transition);
    z-index: 2;
}

.play-button:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg), 0 0 60px rgba(0, 120, 212, 0.5);
}

.play-button svg {
    width: 32px;
    height: 32px;
    color: white;
    margin-left: 4px;
}

.video-overlay {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 14px;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.video-iframe-container {
    aspect-ratio: 16 / 9;
}

.video-iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.video-features {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.video-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--color-text-secondary);
}

.video-feature svg {
    color: var(--color-primary);
}

/* Video section responsive */
@media (max-width: 768px) {
    .video-section {
        padding: 60px 0;
    }

    .video-header h2 {
        font-size: 28px;
    }

    .play-button {
        width: 64px;
        height: 64px;
    }

    .play-button svg {
        width: 24px;
        height: 24px;
    }

    .video-overlay {
        font-size: 12px;
        padding: 8px 16px;
    }

    .video-features {
        flex-direction: column;
        align-items: center;
        gap: 16px;
    }

    /* Hide desktop language switcher on mobile */
    .lang-switcher {
        display: none;
    }
}

@media (min-width: 769px) {
    .mobile-lang-switcher {
        display: none;
    }
}