/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Mint Green Theme */
    --primary-color: #20d9a8;
    --primary-dark: #1ab394;
    --secondary-color: #6ee7b7;
    --accent-color: #34d399;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --black: #000000;
    
    /* Gradients - Mint Green Theme */
    --gradient-primary: linear-gradient(135deg, #20d9a8 0%, #6ee7b7 100%);
    --gradient-secondary: linear-gradient(135deg, #34d399 0%, #20d9a8 100%);
    --gradient-accent: linear-gradient(135deg, #6ee7b7 0%, #34d399 100%);
    --gradient-dark: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    --spacing-32: 8rem;
    
    /* 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);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--gray-900);
    text-decoration: none;
}

.logo {
    width: 32px;
    height: 32px;
}

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

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
}

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--gray-600);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: var(--gradient-secondary);
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: var(--gradient-accent);
    bottom: 20%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-8) var(--spacing-4);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-20);
    align-items: center;
    min-height: calc(100vh - 70px);
}

@media (min-width: 640px) {
    .hero-container {
        padding: var(--spacing-12) var(--spacing-6);
        gap: var(--spacing-24);
    }
}

@media (min-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr 1fr;
        padding: var(--spacing-16) var(--spacing-8);
        gap: var(--spacing-32);
    }
}

/* 针对较长文本的语言优化 */
[lang="en"] .hero-container,
[lang="fr"] .hero-container,
[lang="de"] .hero-container,
[lang="it"] .hero-container {
    padding: var(--spacing-10) var(--spacing-4);
    gap: var(--spacing-24);
    min-height: calc(100vh - 70px);
}

@media (min-width: 640px) {
    [lang="en"] .hero-container,
    [lang="fr"] .hero-container,
    [lang="de"] .hero-container,
    [lang="it"] .hero-container {
        padding: var(--spacing-14) var(--spacing-6);
        gap: var(--spacing-28);
    }
}

@media (min-width: 1024px) {
    [lang="en"] .hero-container,
    [lang="fr"] .hero-container,
    [lang="de"] .hero-container,
    [lang="it"] .hero-container {
        padding: var(--spacing-18) var(--spacing-8);
        gap: var(--spacing-36);
    }
}

.hero-content {
    text-align: center;
}

@media (min-width: 1024px) {
    .hero-content {
        text-align: left;
    }
}

.hero-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: var(--spacing-8);
    color: var(--gray-900);
}

@media (min-width: 640px) {
    .hero-title {
        font-size: var(--font-size-3xl);
        line-height: 1.25;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: var(--font-size-4xl);
        line-height: 1.2;
        margin-bottom: var(--spacing-10);
    }
}

.title-line {
    display: block;
    margin-bottom: var(--spacing-3);
    word-break: break-word;
    hyphens: auto;
}

.title-line:last-child {
    margin-bottom: 0;
}

/* 针对较长文本的语言优化 */
[lang="en"] .title-line,
[lang="fr"] .title-line,
[lang="de"] .title-line,
[lang="it"] .title-line {
    margin-bottom: var(--spacing-4);
}

[lang="en"] .hero-title,
[lang="fr"] .hero-title,
[lang="de"] .hero-title,
[lang="it"] .hero-title {
    font-size: var(--font-size-xl);
    line-height: 1.4;
}

@media (min-width: 640px) {
    [lang="en"] .hero-title,
    [lang="fr"] .hero-title,
    [lang="de"] .hero-title,
    [lang="it"] .hero-title {
        font-size: var(--font-size-2xl);
        line-height: 1.35;
    }
}

@media (min-width: 1024px) {
    [lang="en"] .hero-title,
    [lang="fr"] .hero-title,
    [lang="de"] .hero-title,
    [lang="it"] .hero-title {
        font-size: var(--font-size-3xl);
        line-height: 1.3;
    }
}

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

.hero-description {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-10);
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    word-break: break-word;
    hyphens: auto;
}

@media (min-width: 640px) {
    .hero-description {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-12);
    }
}

@media (min-width: 1024px) {
    .hero-description {
        margin-left: 0;
        margin-right: 0;
        font-size: var(--font-size-lg);
        line-height: 1.6;
    }
}

/* 针对较长文本的语言优化 */
[lang="en"] .hero-description,
[lang="fr"] .hero-description,
[lang="de"] .hero-description,
[lang="it"] .hero-description {
    font-size: var(--font-size-xs);
    line-height: 1.8;
    max-width: 520px;
}

@media (min-width: 640px) {
    [lang="en"] .hero-description,
    [lang="fr"] .hero-description,
    [lang="de"] .hero-description,
    [lang="it"] .hero-description {
        font-size: var(--font-size-sm);
        line-height: 1.75;
    }
}

@media (min-width: 1024px) {
    [lang="en"] .hero-description,
    [lang="fr"] .hero-description,
    [lang="de"] .hero-description,
    [lang="it"] .hero-description {
        font-size: var(--font-size-base);
        line-height: 1.7;
        max-width: 560px;
    }
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
    align-items: center;
    margin-top: var(--spacing-6);
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
        gap: var(--spacing-6);
        margin-top: var(--spacing-8);
    }
}

@media (min-width: 1024px) {
    .hero-buttons {
        justify-content: flex-start;
        margin-top: var(--spacing-10);
    }
}

/* 针对较长文本的语言优化 */
[lang="en"] .hero-buttons,
[lang="fr"] .hero-buttons,
[lang="de"] .hero-buttons,
[lang="it"] .hero-buttons {
    margin-top: var(--spacing-8);
}

@media (min-width: 640px) {
    [lang="en"] .hero-buttons,
    [lang="fr"] .hero-buttons,
    [lang="de"] .hero-buttons,
    [lang="it"] .hero-buttons {
        margin-top: var(--spacing-10);
    }
}

@media (min-width: 1024px) {
    [lang="en"] .hero-buttons,
    [lang="fr"] .hero-buttons,
    [lang="de"] .hero-buttons,
    [lang="it"] .hero-buttons {
        margin-top: var(--spacing-12);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: var(--font-size-sm);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

@media (min-width: 640px) {
    .btn {
        font-size: var(--font-size-base);
    }
}

/* 针对较长文本的语言优化 */
[lang="en"] .btn,
[lang="fr"] .btn,
[lang="de"] .btn,
[lang="it"] .btn {
    font-size: var(--font-size-xs);
    padding: var(--spacing-2) var(--spacing-5);
}

@media (min-width: 640px) {
    [lang="en"] .btn,
    [lang="fr"] .btn,
    [lang="de"] .btn,
    [lang="it"] .btn {
        font-size: var(--font-size-sm);
        padding: var(--spacing-3) var(--spacing-6);
    }
}

.btn::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: var(--transition-slow);
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-8) 0;
}

/* 针对较长文本的语言优化 */
[lang="en"] .hero-visual,
[lang="fr"] .hero-visual,
[lang="de"] .hero-visual,
[lang="it"] .hero-visual {
    padding: var(--spacing-10) 0;
}

@media (min-width: 640px) {
    [lang="en"] .hero-visual,
    [lang="fr"] .hero-visual,
    [lang="de"] .hero-visual,
    [lang="it"] .hero-visual {
        padding: var(--spacing-12) 0;
    }
}

.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: var(--gray-900);
    border-radius: 36px;
    padding: 18px;
    box-shadow: var(--shadow-2xl);
    transform: perspective(1000px) rotateY(-15deg) rotateX(5deg);
    transition: var(--transition-slow);
}

.phone-mockup:hover {
    transform: perspective(1000px) rotateY(-10deg) rotateX(2deg) scale(1.05);
}

@media (min-width: 640px) {
    .phone-mockup {
        width: 300px;
        height: 600px;
        border-radius: 40px;
        padding: 20px;
    }
}

@media (min-width: 1024px) {
    .phone-mockup {
        width: 320px;
        height: 640px;
        border-radius: 44px;
        padding: 22px;
    }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 26px;
    overflow: hidden;
    position: relative;
}

@media (min-width: 640px) {
    .phone-screen {
        border-radius: 30px;
    }
}

@media (min-width: 1024px) {
    .phone-screen {
        border-radius: 34px;
    }
}

.app-interface {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.interface-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    position: relative;
}

.interface-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(32, 217, 168, 0.3) 25%, 
        rgba(32, 217, 168, 0.5) 50%, 
        rgba(32, 217, 168, 0.3) 75%, 
        transparent 100%);
    animation: headerGlow 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes headerGlow {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.8;
    }
}

.interface-title {
    font-weight: 600;
    color: var(--gray-900);
}

.interface-controls {
    display: flex;
    gap: var(--spacing-1);
}

.control-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-400);
}

.control-dot:first-child {
    background: var(--error-color);
}

.control-dot:nth-child(2) {
    background: var(--warning-color);
}

.control-dot:last-child {
    background: var(--success-color);
}

.interface-content {
    flex: 1;
    padding: var(--spacing-5);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-5);
    overflow-y: auto;
}

/* 针对较长文本的语言优化 */
[lang="en"] .interface-content,
[lang="fr"] .interface-content,
[lang="de"] .interface-content,
[lang="it"] .interface-content {
    padding: var(--spacing-4);
    gap: var(--spacing-4);
}

.image-preview {
    position: relative;
    height: 180px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    flex-shrink: 0;
}

.image-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 48%, rgba(255, 255, 255, 0.1) 49%, rgba(255, 255, 255, 0.1) 51%, transparent 52%),
        linear-gradient(-45deg, transparent 48%, rgba(255, 255, 255, 0.08) 49%, rgba(255, 255, 255, 0.08) 51%, transparent 52%),
        radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        radial-gradient(circle at 40% 60%, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 
        30px 30px,
        25px 25px,
        40px 40px,
        35px 35px,
        50px 50px;
    animation: floatLines 8s ease-in-out infinite;
    pointer-events: none;
}

.image-preview::after {
    content: '';
    position: absolute;
    top: 10%;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    animation: scanLine 3s ease-in-out infinite;
    pointer-events: none;
}

@keyframes floatLines {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-5px) rotate(1deg);
        opacity: 0.8;
    }
}

@keyframes scanLine {
    0%, 100% {
        opacity: 0;
        transform: translateY(0);
    }
    50% {
        opacity: 1;
        transform: translateY(20px);
    }
}

@media (min-width: 640px) {
    .image-preview {
        height: 200px;
    }
}

@media (min-width: 1024px) {
    .image-preview {
        height: 220px;
    }
}

.preview-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #6366f1, #8b5cf6, #06b6d4);
    opacity: 0.8;
    position: relative;
}

.preview-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.1) 25%, transparent 50%, rgba(255, 255, 255, 0.1) 75%, transparent 100%),
        linear-gradient(0deg, transparent 0%, rgba(255, 255, 255, 0.08) 25%, transparent 50%, rgba(255, 255, 255, 0.08) 75%, transparent 100%);
    background-size: 60px 60px, 45px 45px;
    animation: gridMove 6s linear infinite;
    pointer-events: none;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(60px, 60px);
    }
}

.preview-overlay {
    position: absolute;
    bottom: var(--spacing-2);
    left: var(--spacing-2);
    right: var(--spacing-2);
}

.preview-overlay::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.3) 20%, 
        rgba(255, 255, 255, 0.5) 50%, 
        rgba(255, 255, 255, 0.3) 80%, 
        transparent 100%);
    animation: pulseLine 2s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulseLine {
    0%, 100% {
        opacity: 0.3;
        transform: scaleX(0.8);
    }
    50% {
        opacity: 0.8;
        transform: scaleX(1);
    }
}

.histogram-chart {
    display: flex;
    align-items: end;
    gap: 2px;
    height: 30px;
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-1);
    border-radius: var(--radius-sm);
}

.histogram-bar {
    flex: 1;
    background: var(--white);
    border-radius: 1px;
    animation: histogramPulse 2s ease-in-out infinite;
}

@keyframes histogramPulse {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 1;
    }
}

.control-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    flex: 1;
    overflow-y: auto;
}

.slider-control {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.slider-control label {
    font-size: var(--font-size-xs);
    color: var(--gray-600);
    font-weight: 500;
    line-height: 1.2;
}

@media (min-width: 640px) {
    .slider-control label {
        font-size: var(--font-size-sm);
    }
}

/* 针对较长文本的语言优化 */
[lang="en"] .slider-control label,
[lang="fr"] .slider-control label,
[lang="de"] .slider-control label,
[lang="it"] .slider-control label {
    font-size: 10px;
    line-height: 1.1;
}

@media (min-width: 640px) {
    [lang="en"] .slider-control label,
    [lang="fr"] .slider-control label,
    [lang="de"] .slider-control label,
    [lang="it"] .slider-control label {
        font-size: var(--font-size-xs);
        line-height: 1.2;
    }
}

.slider {
    position: relative;
    height: 4px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
}

.slider-track {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 60%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

.slider-thumb {
    position: absolute;
    top: 50%;
    left: 60%;
    width: 14px;
    height: 14px;
    background: var(--white);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: var(--shadow-md);
    transition: var(--transition-fast);
}

.slider-thumb:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-lg);
}

@media (min-width: 640px) {
    .slider-thumb {
        width: 16px;
        height: 16px;
    }
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-16);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--spacing-32) 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

@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 {
    background: var(--white);
    padding: var(--spacing-8);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.feature-card:hover::before {
    transform: scaleX(1);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
    color: var(--white);
}

.feature-icon svg {
    width: 30px;
    height: 30px;
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.feature-description {
    color: var(--gray-600);
    margin-bottom: var(--spacing-6);
    line-height: 1.7;
}

.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.tag {
    background: var(--gray-100);
    color: var(--gray-700);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}


/* Download Section */
.download {
    padding: var(--spacing-32) 0;
    background: var(--gradient-dark);
    color: var(--white);
}

.download-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

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

.download-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-6);
    color: var(--white);
}

.download-description {
    font-size: var(--font-size-lg);
    color: var(--gray-300);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

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

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4) var(--spacing-6);
    background: var(--white);
    color: var(--gray-900);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-icon {
    width: 24px;
    height: 24px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-label {
    font-weight: 600;
    font-size: var(--font-size-base);
}

.btn-subtitle {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.download-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: var(--spacing-8) 0;
}

.download-visual::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(32, 217, 168, 0.1) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
}

.download-visual::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(110, 231, 183, 0.08) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        opacity: 0.3;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.download-mockup {
    position: relative;
    width: 250px;
    height: 500px;
    background: linear-gradient(145deg, var(--gray-900), var(--gray-800));
    border-radius: 30px;
    padding: 15px;
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
    transition: var(--transition-slow);
}

.download-mockup:hover {
    transform: perspective(1000px) rotateY(-2deg) rotateX(1deg) scale(1.02);
    box-shadow: 
        0 35px 70px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.mockup-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.1),
        0 1px 2px rgba(0, 0, 0, 0.1);
}

.app-preview {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.preview-title {
    font-weight: 600;
    color: var(--gray-900);
}

.preview-status {
    background: var(--success-color);
    color: var(--white);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.preview-content {
    flex: 1;
    padding: var(--spacing-6);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-6);
    justify-content: center;
}

.feature-preview {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.preview-icon {
    font-size: var(--font-size-xl);
}

.preview-text {
    font-weight: 500;
    color: var(--gray-700);
}


/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

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

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

.footer-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

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

.social-links {
    display: flex;
    gap: var(--spacing-4);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-8);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    align-items: center;
    text-align: center;
}

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

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-6);
}

.footer-bottom-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--white);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-8);
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

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

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

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

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .download-mockup {
        width: 200px;
        height: 400px;
        padding: 12px;
        border-radius: 24px;
    }
}

/* Policy Pages */
.policy-page {
    padding: var(--spacing-20) 0;
    min-height: 100vh;
}

.policy-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.policy-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
    text-align: center;
}

.policy-intro {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.policy-section {
    margin-bottom: var(--spacing-10);
}

.policy-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-2);
}

.policy-section p {
    font-size: var(--font-size-base);
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: var(--spacing-4);
}

.policy-section ul {
    margin-left: var(--spacing-6);
    margin-bottom: var(--spacing-4);
}

.policy-section li {
    font-size: var(--font-size-base);
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: var(--spacing-2);
}

.cookie-types {
    display: grid;
    gap: var(--spacing-6);
    margin: var(--spacing-6) 0;
}

.cookie-type {
    background: var(--gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
}

.cookie-type h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-2);
}

.cookie-type p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: 0;
}

.browser-instructions {
    background: var(--gray-50);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-4);
}

.browser-instructions h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

.browser-instructions ul {
    margin-left: var(--spacing-6);
}

.browser-instructions li {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    margin-bottom: var(--spacing-2);
}

@media (min-width: 640px) {
    .policy-content {
        padding: 0 var(--spacing-6);
    }
    
    .cookie-types {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (min-width: 1024px) {
    .policy-content {
        padding: 0 var(--spacing-8);
    }
    
    .policy-title {
        font-size: var(--font-size-5xl);
    }
    
    .policy-section h2 {
        font-size: var(--font-size-3xl);
    }
}

/* AOS Animation Overrides */
[data-aos] {
    pointer-events: none;
}

[data-aos].aos-animate {
    pointer-events: auto;
}

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

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Selection */
::selection {
    background: var(--primary-color);
    color: var(--white);
}

/* Focus Styles */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .navbar,
    .hero-buttons,
    .download-buttons,
    .contact-form,
    .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-8) 0;
    }
    
    .section-title {
        color: var(--black);
    }
}