/* ============================================
   Expenovo Website Styles
   ============================================ */

/* CSS Variables - Color Scheme */
:root {
    /* Primary Colors */
    --primary-blue: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --primary-surface: #EEF2FF;

    /* Secondary Colors */
    --secondary-purple: #8B5CF6;
    --secondary-light: #A78BFA;
    --secondary-surface: #F5F3FF;

    /* Background & Surface Colors */
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --surface-variant: #F1F5F9;
    --border: #E2E8F0;

    /* Text Colors */
    --text-primary: #0F172A;
    --text-secondary: #64748B;
    --text-tertiary: #94A3B8;

    /* Status Colors */
    --success-green: #10B981;
    --warning-orange: #F59E0B;
    --error-red: #EF4444;
    --info-blue: #3B82F6;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-purple) 100%);
    --gradient-surface: linear-gradient(135deg, var(--primary-surface) 0%, var(--secondary-surface) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 100%);
    --gradient-button: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-light) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-glow: 0 0 15px rgba(79, 70, 229, 0.15);
    --shadow-glow-purple: 0 0 15px rgba(139, 92, 246, 0.15);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --background: #0F172A;
    --surface: #1E293B;
    --surface-variant: #334155;
    --border: #475569;
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-tertiary: #94A3B8;
    --primary-surface: #1E1B4B;
    --secondary-surface: #2D1B4E;
    --gradient-card: linear-gradient(145deg, rgba(30, 41, 59, 0.95) 0%, rgba(30, 41, 59, 0.85) 100%);
    --shadow-glow: 0 0 15px rgba(79, 70, 229, 0.2);
    --shadow-glow-purple: 0 0 15px rgba(139, 92, 246, 0.2);
}

/* ============================================
   Reset & Base Styles
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(1.875rem, 4vw, 2.625rem);
    font-weight: 700;
}

h3 {
    font-size: clamp(1.375rem, 3vw, 1.875rem);
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

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

a:hover {
    color: var(--primary-light);
}

/* ============================================
   Loading Animation
   ============================================ */

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--surface);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 60px;
    height: 60px;
    border: 4px solid var(--surface-variant);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.nav-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-blue);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav-logo:hover .nav-logo-icon {
    background: var(--primary-dark);
    transform: scale(1.05) rotate(10deg);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-toggle {
    background: var(--surface-variant);
    border: 1px solid var(--border);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    font-size: 1.125rem;
}

.theme-toggle:hover {
    background: var(--primary-surface);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    transform: scale(1.1) rotate(15deg);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--background);
    padding: var(--spacing-3xl) var(--spacing-md);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.08) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
    animation: float 15s ease-in-out infinite reverse;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    opacity: 0;
    animation: slideInLeft 1s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.hero-badge {
    opacity: 0;
    animation: bounceIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.3s forwards;
    display: inline-block;
    background: var(--primary-surface);
    color: var(--primary-blue);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--primary-light);
}

.hero-title {
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s forwards;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: 800;
    letter-spacing: -0.5px;
    position: relative;
    z-index: 1;
}

.hero-description {
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.5s forwards;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    max-width: 500px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.hero-buttons {
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.6s forwards;
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.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 ease;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.1), transparent);
    transition: left 0.5s ease;
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: var(--primary-surface);
    transform: translateY(-2px) scale(1.05);
}

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

.btn-icon {
    font-size: 1.25rem;
}

.hero-image {
    opacity: 0;
    animation: slideInRight 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.4s forwards;
}

.hero-mockup {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    animation: floatPhone 6s ease-in-out infinite;
}

.hero-mockup:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.mockup-screen {
    background: var(--primary-blue);
    border-radius: var(--radius-md);
    aspect-ratio: 9/16;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

.mockup-screen img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-md);
}

.mockup-screen::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
    z-index: 1;
}

/* ============================================
   Features Section
   ============================================ */

.features {
    padding: var(--spacing-3xl) var(--spacing-md);
    background: var(--surface);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.06) 0%, transparent 70%);
    animation: float 18s ease-in-out infinite;
}

.features::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
    animation: float 22s ease-in-out infinite reverse;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.section-subtitle {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s forwards;
}

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

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-surface);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition-normal);
    position: relative;
    z-index: 1;
    animation: breathe 3s ease-in-out infinite;
}

.feature-card:nth-child(2) .feature-icon {
    animation-delay: 0.5s;
}

.feature-card:nth-child(3) .feature-icon {
    animation-delay: 1s;
}

.feature-card:nth-child(4) .feature-icon {
    animation-delay: 1.5s;
}

.feature-card:nth-child(5) .feature-icon {
    animation-delay: 2s;
}

.feature-card:nth-child(6) .feature-icon {
    animation-delay: 2.5s;
}

.feature-card:hover .feature-icon {
    background: var(--primary-blue);
    color: white;
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
    animation-play-state: paused;
}

.feature-title {
    margin-bottom: var(--spacing-xs);
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-title {
    transform: translateX(5px);
}

.feature-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-description {
    transform: translateX(5px);
}

/* ============================================
   Screenshots Section
   ============================================ */

.screenshots {
    padding: var(--spacing-3xl) var(--spacing-md);
    background: var(--background);
    position: relative;
    overflow: hidden;
}

.screenshots::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, transparent 70%);
    animation: float 25s ease-in-out infinite;
}

.screenshots-carousel {
    display: flex;
    gap: var(--spacing-lg);
    overflow-x: auto;
    padding: var(--spacing-md) 0;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    position: relative;
    z-index: 1;
}

.screenshots-carousel::-webkit-scrollbar {
    height: 8px;
}

.screenshots-carousel::-webkit-scrollbar-track {
    background: var(--surface-variant);
    border-radius: var(--radius-sm);
}

.screenshots-carousel::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: var(--radius-sm);
}

.screenshot-item {
    flex: 0 0 auto;
    scroll-snap-align: center;
}

.screenshot-image {
    width: 280px;
    height: 560px;
    background: var(--surface);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.screenshot-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.screenshot-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: left 0.6s ease;
}

.screenshot-image:hover {
    transform: translateY(-12px) scale(1.03) rotate(1deg);
    box-shadow: 0 20px 40px rgba(79, 70, 229, 0.2);
}

.screenshot-image:hover::before {
    opacity: 1;
}

.screenshot-image:hover::after {
    left: 100%;
}

/* ============================================
   Testimonials Section
   ============================================ */

.testimonials {
    padding: var(--spacing-3xl) var(--spacing-md);
    background: var(--surface);
    position: relative;
    overflow: hidden;
}

.testimonials::before {
    content: '';
    position: absolute;
    top: -10%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.testimonials::after {
    content: '';
    position: absolute;
    bottom: -10%;
    right: -5%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, transparent 70%);
    animation: float 24s ease-in-out infinite reverse;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.testimonial-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.testimonial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.testimonial-card::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.02) 0%, transparent 50%);
    animation: float 10s ease-in-out infinite;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue);
}

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

.testimonial-card:hover::after {
    opacity: 1;
}

.testimonial-quote {
    font-size: 2.5rem;
    color: var(--primary-blue);
    opacity: 0.15;
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    line-height: 1;
    transition: transform var(--transition-normal);
}

.testimonial-card:hover .testimonial-quote {
    transform: scale(1.1) rotate(5deg);
}

.testimonial-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.testimonial-card:hover .testimonial-avatar {
    transform: scale(1.15) rotate(-5deg);
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.testimonial-name {
    font-weight: 600;
    color: var(--text-primary);
}

.testimonial-role {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ============================================
   Download Section
   ============================================ */

.download {
    padding: var(--spacing-3xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-purple) 100%);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.download::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
    animation: float 25s ease-in-out infinite reverse;
}

.download-title {
    color: white;
    margin-bottom: var(--spacing-sm);
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    position: relative;
    z-index: 1;
}

.download-description {
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.1s forwards;
    position: relative;
    z-index: 1;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.store-button {
    opacity: 0;
    animation: slideInUp 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s forwards;
}

.store-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: white;
    color: var(--text-primary);
    padding: 0.875rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.store-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(79, 70, 229, 0.1), transparent);
    transition: left 0.5s ease;
}

.store-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
}

.store-button:hover::before {
    left: 100%;
}

.store-icon {
    font-size: 1.75rem;
}

.store-text {
    text-align: left;
}

.store-text span:first-child {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.store-text span:last-child {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--spacing-3xl) var(--spacing-md) var(--spacing-lg);
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    margin-bottom: var(--spacing-md);
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.1s forwards;
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    opacity: 0;
    animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--surface-variant);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-blue);
    color: white;
    transform: translateY(-2px) scale(1.1) rotate(10deg);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ============================================
   Privacy & Terms Pages
   ============================================ */

.page-header {
    background: var(--surface);
    padding: var(--spacing-2xl) var(--spacing-md);
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.page-title {
    margin-bottom: var(--spacing-sm);
}

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.content-section {
    margin-bottom: var(--spacing-xl);
}

.content-section h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-blue);
}

.content-section p {
    margin-bottom: var(--spacing-sm);
}

.content-section ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.content-section li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

/* ============================================
   Support Page
   ============================================ */

.support-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.contact-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
    background: var(--surface);
    color: var(--text-primary);
}

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

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-error {
    color: var(--error-red);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form-error.show {
    display: block;
}

.form-input.error,
.form-textarea.error {
    border-color: var(--error-red);
}

.faq-section {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: var(--spacing-md) 0;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary-blue);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-blue);
    transition: transform var(--transition-normal);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

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

.faq-answer p {
    padding-bottom: var(--spacing-md);
}

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

.help-center {
    margin-top: var(--spacing-lg);
}

.help-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--surface-variant);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.help-link:hover {
    background: var(--primary-surface);
    color: var(--primary-blue);
    transform: translateX(4px);
}

/* ============================================
   Scroll to Top Button
   ============================================ */

.scroll-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 44px;
    height: 44px;
    background: var(--primary-blue);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.125rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============================================
   Cookie Consent Banner
   ============================================ */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
    z-index: 998;
}

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

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.cookie-text {
    flex: 1;
    color: var(--text-secondary);
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   Animations
   ============================================ */

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Samsung-style Video Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-60px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(60px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes floatPhone {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    25% {
        transform: translateY(-15px) rotate(1deg);
    }

    50% {
        transform: translateY(-8px) rotate(-1deg);
    }

    75% {
        transform: translateY(-20px) rotate(0.5deg);
    }
}

@keyframes shine {
    0% {
        left: -100%;
    }

    50% {
        left: 100%;
    }

    100% {
        left: 100%;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(20px, -20px) rotate(5deg);
    }

    50% {
        transform: translate(-10px, 10px) rotate(-5deg);
    }

    75% {
        transform: translate(15px, 5px) rotate(3deg);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInFromBottom {
    from {
        opacity: 0;
        transform: translateY(50px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 968px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin: 0 auto var(--spacing-lg);
    }

    .hero-buttons {
        justify-content: center;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: var(--surface);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

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

    .hamburger {
        display: flex;
    }

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

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

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

    .download-buttons {
        flex-direction: column;
        width: 100%;
    }

    .store-button {
        width: 100%;
        justify-content: center;
    }
}