/**
 * TikDown Pro - Main Stylesheet
 * Modern, responsive, and SEO-optimized design
 */

/* ==================== CSS Variables ==================== */
:root {
    /* Primary Colors */
    --color-primary: #fe2c55;
    --color-primary-dark: #d91a3d;
    --color-primary-light: #ff6b8a;
    --color-secondary: #25f4ee;
    --color-secondary-dark: #1dd4ce;
    
    /* Neutral Colors */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-dark) 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-tiktok: linear-gradient(90deg, var(--color-secondary) 0%, var(--color-primary) 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Poppins', var(--font-primary);
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* 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;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(254, 44, 85, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-tooltip: 400;
    --z-toast: 500;
}

/* ==================== 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-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

/* ==================== Utility Classes ==================== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    z-index: 9999;
    transition: top var(--transition-base);
}

.skip-link:focus {
    top: var(--space-4);
}

.gradient-text {
    background: var(--gradient-tiktok);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== Header ==================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.main-header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--text-xl);
    box-shadow: var(--shadow-glow);
}

.logo-text {
    display: flex;
    align-items: baseline;
    gap: var(--space-1);
}

.logo-main {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.logo-pro {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Menu */
.nav-menu {
    display: none;
    align-items: center;
    gap: var(--space-2);
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: rgba(254, 44, 85, 0.08);
}

.nav-link i {
    font-size: var(--text-sm);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Language Selector */
.language-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    background: var(--color-gray-100);
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background: var(--color-gray-200);
}

.lang-btn .fa-globe {
    color: var(--color-primary);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--space-2);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    max-height: 400px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

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

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    transition: background var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
    background: var(--color-gray-50);
}

.lang-flag {
    width: 28px;
    height: 20px;
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
}

.lang-name {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    background: none;
    border: none;
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-modal);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 90vw;
    background: var(--color-white);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    flex-direction: column;
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.menu-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.menu-close:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.mobile-nav-menu {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.mobile-nav-item {
    margin-bottom: var(--space-2);
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: rgba(254, 44, 85, 0.08);
    color: var(--color-primary);
}

.mobile-nav-link i {
    width: 24px;
    text-align: center;
    color: var(--color-primary);
}

.mobile-menu-footer {
    padding: var(--space-6);
    border-top: 1px solid var(--color-gray-200);
}

.mobile-social-links {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

.mobile-social-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
}

.mobile-social-links a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ==================== Hero Section ==================== */
.hero-section {
    position: relative;
    padding: calc(72px + var(--space-20)) 0 var(--space-24);
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    overflow: hidden;
}

.hero-bg-animation {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--color-secondary);
    bottom: -100px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(50px, -50px) scale(1.1);
    }
    50% {
        transform: translate(0, 50px) scale(0.9);
    }
    75% {
        transform: translate(-50px, -25px) scale(1.05);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-6);
}

.hero-title .subtitle {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--color-gray-600);
}

@media (min-width: 640px) {
    .hero-title {
        font-size: var(--text-5xl);
    }
    
    .hero-title .subtitle {
        font-size: var(--text-3xl);
    }
}

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto var(--space-10);
    line-height: 1.7;
}

/* Downloader Card */
.downloader-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-200);
}

@media (min-width: 640px) {
    .downloader-card {
        padding: var(--space-8);
    }
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .input-group {
        flex-direction: row;
    }
}

.input-wrapper {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: var(--space-4);
    color: var(--color-gray-400);
    font-size: var(--text-lg);
}

.form-control {
    width: 100%;
    padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(254, 44, 85, 0.1);
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

.paste-btn {
    position: absolute;
    right: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-600);
    transition: all var(--transition-fast);
}

.paste-btn:hover {
    background: var(--color-gray-200);
    color: var(--color-gray-800);
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    font-size: var(--text-lg);
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-fast);
    min-width: 180px;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(254, 44, 85, 0.4);
}

.download-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Progress Bar */
.progress-container {
    margin-top: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-weight: 600;
    color: var(--color-primary);
    min-width: 45px;
    text-align: right;
}

/* Alert */
.alert {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-top: var(--space-4);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

/* Video Result */
.video-result {
    margin-top: var(--space-8);
}

.result-card {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-200);
}

.video-preview {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-duration {
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    background: rgba(0, 0, 0, 0.8);
    color: var(--color-white);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
}

.play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(254, 44, 85, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--text-2xl);
    transition: all var(--transition-fast);
    backdrop-filter: blur(10px);
}

.play-btn:hover {
    background: var(--color-primary);
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-gray-200);
}

.author-info {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.author-info img {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-white);
    box-shadow: var(--shadow-md);
}

.author-details h4 {
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
}

.author-details span {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.video-caption {
    color: var(--color-gray-700);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.video-stats {
    display: flex;
    gap: var(--space-6);
}

.video-stats span {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-600);
}

.video-stats i {
    color: var(--color-primary);
}

.download-options {
    padding: var(--space-6);
}

.download-options h5 {
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

.download-buttons {
    display: grid;
    gap: var(--space-3);
}

@media (min-width: 640px) {
    .download-buttons {
        grid-template-columns: repeat(3, 1fr);
    }
}

.download-option {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    border: 2px solid var(--color-gray-200);
    transition: all var(--transition-fast);
}

.download-option:hover {
    border-color: var(--color-primary);
    background: rgba(254, 44, 85, 0.05);
}

.download-option i {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    font-size: var(--text-xl);
}

.download-option.hd i {
    background: rgba(254, 44, 85, 0.1);
    color: var(--color-primary);
}

.download-option.sd i {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
}

.download-option.mp3 i {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.option-info {
    text-align: left;
}

.option-title {
    display: block;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-1);
}

.option-quality {
    display: block;
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

/* ==================== Section Styles ==================== */
section {
    padding: var(--space-20) 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    text-align: center;
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
}

@media (min-width: 640px) {
    .section-title {
        font-size: var(--text-4xl);
    }
}

.section-subtitle {
    text-align: center;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto var(--space-12);
    font-size: var(--text-lg);
}

/* ==================== Features Section ==================== */
.features-section {
    background: var(--color-white);
}

.features-grid {
    display: grid;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: var(--space-8);
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    text-align: center;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-gray-200);
    background: var(--color-white);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    color: var(--color-white);
    box-shadow: var(--shadow-glow);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.feature-card p {
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* ==================== How It Works Section ==================== */
.how-it-works-section {
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-white) 100%);
}

.steps-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

@media (min-width: 768px) {
    .steps-container {
        flex-direction: row;
        justify-content: center;
        align-items: flex-start;
    }
}

.step-card {
    flex: 1;
    max-width: 320px;
    text-align: center;
    padding: var(--space-8);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-glow);
}

.step-icon {
    width: 100px;
    height: 100px;
    margin: var(--space-4) auto var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-4xl);
    color: var(--color-primary);
}

.step-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--space-3);
}

.step-card p {
    color: var(--color-gray-600);
    line-height: 1.6;
}

.step-arrow {
    display: none;
    color: var(--color-primary);
    font-size: var(--text-2xl);
}

@media (min-width: 768px) {
    .step-arrow {
        display: flex;
        align-items: center;
        padding-top: var(--space-16);
    }
}

/* ==================== Platforms Section ==================== */
.platforms-section {
    background: var(--color-white);
}

.platforms-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .platforms-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.platform-card {
    text-align: center;
    padding: var(--space-8) var(--space-6);
    background: var(--color-gray-50);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.platform-card:hover {
    background: var(--gradient-primary);
    color: var(--color-white);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.platform-card i {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
    color: var(--color-primary);
}

.platform-card:hover i {
    color: var(--color-white);
}

.platform-card h4 {
    font-weight: 600;
    margin-bottom: var(--space-1);
    color: var(--color-gray-900);
}

.platform-card:hover h4 {
    color: var(--color-white);
}

.platform-card p {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.platform-card:hover p {
    color: rgba(255, 255, 255, 0.8);
}

/* ==================== FAQ Section ==================== */
.faq-section {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

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

.faq-item {
    margin-bottom: var(--space-4);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    font-weight: 600;
    text-align: left;
    color: var(--color-gray-900);
    transition: all var(--transition-fast);
}

.faq-question:hover {
    background: var(--color-gray-50);
}

.faq-question i {
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--space-6) var(--space-6);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ==================== Stats Section ==================== */
.stats-section {
    background: var(--gradient-primary);
    padding: var(--space-16) 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

@media (min-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stat-item {
    text-align: center;
    color: var(--color-white);
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 800;
    margin-bottom: var(--space-2);
}

@media (min-width: 640px) {
    .stat-number {
        font-size: var(--text-5xl);
    }
}

.stat-label {
    font-size: var(--text-sm);
    opacity: 0.9;
}

/* ==================== CTA Section ==================== */
.cta-section {
    background: var(--color-gray-900);
    padding: var(--space-20) 0;
}

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

.cta-content h2 {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

@media (min-width: 640px) {
    .cta-content h2 {
        font-size: var(--text-4xl);
    }
}

.cta-content p {
    color: var(--color-gray-400);
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    font-size: var(--text-lg);
    font-weight: 600;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-fast);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(254, 44, 85, 0.4);
}

/* ==================== Footer ==================== */
.main-footer {
    background: var(--color-gray-900);
    color: var(--color-white);
}

.footer-top {
    padding: var(--space-20) 0 var(--space-12);
}

.footer-grid {
    display: grid;
    gap: var(--space-10);
}

@media (min-width: 640px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr 2fr;
    }
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.footer-logo .logo-icon {
    width: 40px;
    height: 40px;
    font-size: var(--text-lg);
}

.footer-logo .logo-main {
    font-size: var(--text-xl);
    color: var(--color-white);
}

.footer-description {
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.footer-social a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--color-gray-800);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.footer-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-6);
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: var(--space-2);
}

.footer-links i {
    font-size: var(--text-xs);
}

/* Newsletter */
.footer-newsletter p {
    color: var(--color-gray-400);
    margin-bottom: var(--space-4);
}

.newsletter-form {
    display: flex;
    gap: var(--space-2);
}

.newsletter-form input {
    flex: 1;
    padding: var(--space-3) var(--space-4);
    background: var(--color-gray-800);
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    font-size: var(--text-sm);
}

.newsletter-form input::placeholder {
    color: var(--color-gray-500);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.newsletter-form button {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    transition: all var(--transition-fast);
}

.newsletter-form button:hover {
    transform: scale(1.05);
}

/* Footer Bottom */
.footer-bottom {
    border-top: 1px solid var(--color-gray-800);
    padding: var(--space-6) 0;
}

.footer-bottom-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    text-align: center;
}

@media (min-width: 640px) {
    .footer-bottom-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.copyright,
.disclaimer {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
}

.footer-lang-selector {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-gray-400);
}

.footer-lang-selector select {
    background: var(--color-gray-800);
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    color: var(--color-white);
    font-size: var(--text-sm);
    cursor: pointer;
}

.footer-lang-selector select:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* ==================== Back to Top ==================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-glow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-sticky);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(254, 44, 85, 0.4);
}

/* ==================== Cookie Consent ==================== */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-2xl);
    padding: var(--space-6);
    z-index: calc(var(--z-modal) + 10);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.cookie-consent.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
    text-align: center;
}

@media (min-width: 640px) {
    .cookie-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.cookie-content p {
    color: var(--color-gray-600);
    font-size: var(--text-sm);
}

.cookie-buttons {
    display: flex;
    gap: var(--space-3);
    flex-shrink: 0;
}

.cookie-btn {
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
}

.cookie-accept {
    background: var(--gradient-primary);
    color: var(--color-white);
}

.cookie-accept:hover {
    box-shadow: var(--shadow-glow);
}

.cookie-more {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.cookie-more:hover {
    background: var(--color-gray-200);
}

/* ==================== Animations ==================== */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

.animate-slideInUp {
    animation: slideInUp 0.6s ease forwards;
}

/* ==================== Print Styles ==================== */
@media print {
    .main-header,
    .main-footer,
    .back-to-top,
    .cookie-consent {
        display: none !important;
    }
    
    body {
        color: #000;
    }
}