/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Dreams Purple Theme */
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
    --primary-light: #a78bfa;
    --secondary: #6366f1;
    --accent: #ec4899;
    
    /* Neutrals */
    --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 */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-hero: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    
    /* 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-glow: 0 0 20px rgba(139, 92, 246, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--white);
    overflow-x: hidden;
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    white-space: nowrap;
}

.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), var(--shadow-glow);
}

.btn-secondary {
    background: var(--white);
    color: var(--gray-900);
    border: 2px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

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

.btn-icon {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(17, 24, 39, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    transition: all var(--transition-normal);
}

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

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

.nav-icon {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-sm);
}

.nav-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--white);
}

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

.nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    position: relative;
}

.nav-link:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    color: var(--white);
    background: var(--primary);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
}

.nav-mobile {
    display: none;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 1.5rem;
    height: 2px;
    background: var(--white);
    transition: all var(--transition-fast);
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #faf9ff 0%, #f0f9ff 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

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

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.hero-note {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gradient-glass);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.hero-note p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-600);
    font-size: 0.9rem;
}

.note-icon {
    font-size: 1.1rem;
}

/* Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    transform: rotate(15deg);
    transition: transform var(--transition-slow);
}

.phone-mockup:hover {
    transform: rotate(5deg) scale(1.05);
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: var(--gray-900);
    border-radius: 2.5rem;
    padding: 0.5rem;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    width: 3rem;
    height: 0.25rem;
    background: var(--gray-700);
    border-radius: 0.125rem;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    border-radius: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.hero-app-icon {
    width: 4rem;
    height: 4rem;
    border-radius: 1rem;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-lg);
}

.screenshot-placeholder {
    background: var(--gradient-glass);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    width: 100%;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== FEATURES SECTION ===== */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid var(--gray-200);
    transition: all 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: transform var(--transition-normal);
}

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

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

.feature-icon {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.feature-icon svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--white);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

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

/* ===== SCREENSHOTS SECTION ===== */
.screenshots {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #faf9ff 0%, #f0f9ff 100%);
}

.screenshots-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Screenshots Carousel */
.screenshots-carousel-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.screenshots-carousel {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    cursor: grab;
    user-select: none;
}

.screenshots-carousel:active {
    cursor: grabbing;
}

.screenshot-slide {
    display: none;
    animation: slideIn 0.5s ease-in-out;
}

.screenshot-slide.active {
    display: block;
}

.screenshot-slide .screenshot-item {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 16/10;
}

.screenshot-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.screenshot-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
    text-align: center;
}

.screenshot-caption h4 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.screenshot-caption p {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Carousel Navigation */
.carousel-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.carousel-dots .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-300);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.carousel-dots .dot.active {
    background: var(--primary);
    transform: scale(1.2);
}

.carousel-dots .dot:hover {
    background: var(--primary-light);
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.carousel-arrow:hover {
    background: var(--white);
    transform: translateY(-50%) scale(1.1);
}

.carousel-arrow.prev {
    left: -1.5rem;
}

.carousel-arrow.next {
    right: -1.5rem;
}

.carousel-arrow svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--gray-700);
}

/* Screenshots Grid */
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.screenshot-card {
    position: relative;
    transition: all var(--transition-normal);
}

.screenshot-wrapper {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    aspect-ratio: 9/16;
}

.screenshot-card:hover .screenshot-wrapper {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.screenshot-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: all var(--transition-normal);
}

.screenshot-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    text-align: center;
}

.screenshot-info h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.screenshot-info p {
    font-size: 0.8rem;
    opacity: 0.9;
    line-height: 1.4;
}

/* Screenshots Responsive Design */
@media (max-width: 1024px) {
    .screenshots-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: var(--spacing-lg);
        padding: 0 var(--spacing-lg);
    }
    
    .screenshot-info h4 {
        font-size: 0.9rem;
    }
    
    .screenshot-info p {
        font-size: 0.75rem;
    }
}

@media (max-width: 768px) {
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
        padding: 0 var(--spacing-md);
    }
    
    .screenshot-wrapper {
        aspect-ratio: 3/4;
    }
    
    .screenshot-info {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
    }
    
    .screenshot-info h4 {
        font-size: 0.85rem;
    }
    
    .screenshot-info p {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .screenshots-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm);
        max-width: 280px;
    }
    
    .screenshot-wrapper {
        aspect-ratio: 9/16;
    }
    
    .screenshot-card:hover .screenshot-wrapper {
        transform: translateY(-4px);
    }
    
    .screenshot-info h4 {
        font-size: 0.8rem;
    }
    
    .screenshot-info p {
        font-size: 0.65rem;
    }
}

.phone-screen .screenshot-item {
    width: 100%;
    height: 100%;
    background: transparent;
    border-radius: var(--radius-lg);
    padding: 0;
    box-shadow: none;
    transition: transform var(--transition-normal);
    overflow: hidden;
}

.screenshots .screenshot-item {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal);
    overflow: hidden;
}

.phone-screen .screenshot-item:hover {
    transform: scale(1.02);
}

.screenshots .screenshot-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.screenshot-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    display: block;
    transition: transform var(--transition-normal);
}

.phone-screen .screenshot-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.screenshots .screenshot-item:hover .screenshot-image {
    transform: scale(1.02);
}

.screenshot-item .screenshot-placeholder {
    background: var(--gradient-glass);
    border: 2px dashed var(--gray-300);
    color: var(--gray-500);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.about-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.about-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.highlight-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--gradient-glass);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.highlight-number {
    display: block;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.highlight-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

/* About Card */
.about-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-avatar {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: var(--white);
}

.card-info h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--gray-900);
}

.card-info p {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.card-content {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary);
}

.card-content p {
    font-style: italic;
    color: var(--gray-700);
}

.card-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.detail-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--gray-200);
}

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

.detail-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

.detail-value {
    font-size: 0.875rem;
    color: var(--gray-900);
    font-weight: var(--font-weight-semibold);
}

/* ===== OPEN SOURCE SECTION ===== */
.opensource {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.opensource::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 70%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.opensource-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    overflow-x: hidden;
    width: 100%;
    box-sizing: border-box;
}

.opensource-content {
    display: grid;
    grid-template-columns: 0.6fr 1.4fr;
    gap: var(--spacing-2xl);
    align-items: start;
    max-width: 100%;
    overflow: hidden;
    box-sizing: border-box;
    width: 100%;
}

.opensource-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 2.2rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.title-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.title-icon svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--white);
}

.opensource-description {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.opensource-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, auto));
    gap: var(--spacing-sm);
    margin: var(--spacing-xl) 0;
    align-items: center;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    flex: 0 0 auto;
    white-space: nowrap;
    min-width: fit-content;
}

.stat-icon {
    font-size: 1.5rem;
}

.stat-content {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    color: var(--white);
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.opensource-buttons {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    max-width: 100%;
    box-sizing: border-box;
    justify-content: flex-start;
}

.opensource-buttons .btn {
    flex: 0 1 auto;
    min-width: 120px;
    max-width: 200px;
}

/* Code Window */
.code-window {
    background: #1e293b;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: #0f172a;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-dots {
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}

.dot.red {
    background: #ef4444;
}

.dot.yellow {
    background: #f59e0b;
}

.dot.green {
    background: #10b981;
}

.code-title {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
}

.code-content {
    padding: var(--spacing-lg);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.code-line {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.25rem;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
}

.line-number {
    width: 2rem;
    color: rgba(255, 255, 255, 0.4);
    text-align: right;
    margin-right: var(--spacing-md);
    user-select: none;
}

.code-keyword {
    color: #c792ea;
    font-weight: var(--font-weight-medium);
}

.code-type {
    color: #82aaff;
}

.code-protocol {
    color: #89ddff;
}

.code-property {
    color: #f78c6c;
}

.code-number {
    color: #fd9170;
}

.code-string {
    color: #c3e88d;
}

.code-function {
    color: #82aaff;
}

.code-text {
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.code-comment {
    color: #5c6370;
    font-style: italic;
}

/* Code Carousel */
.code-carousel {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.code-window-container {
    position: relative;
    height: 500px;
    perspective: 1200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.code-navigation {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.code-indicators {
    display: flex;
    gap: 0.5rem;
}

.code-nav-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--white);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    z-index: 20;
}

.code-nav-btn:hover {
    background: rgba(139, 92, 246, 0.3);
    border-color: var(--primary);
    transform: scale(1.1);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.4);
}

.code-nav-btn svg {
    width: 16px;
    height: 16px;
}

.code-window {
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    position: absolute;
    width: 600px;
    height: 450px;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.code-window:nth-child(1) {
    z-index: 10;
    transform: translateY(0px) scale(1) rotateY(0deg);
}

.code-window:nth-child(2) {
    z-index: 9;
    transform: translateY(10px) scale(0.95) rotateY(-5deg);
    opacity: 0.8;
}

.code-window:nth-child(3) {
    z-index: 8;
    transform: translateY(20px) scale(0.9) rotateY(-10deg);
    opacity: 0.6;
}

.code-window:nth-child(4) {
    z-index: 7;
    transform: translateY(30px) scale(0.85) rotateY(-15deg);
    opacity: 0.4;
}

.code-window.transitioning {
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.code-header {
    background: var(--gray-800);
    padding: 1rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.code-content {
    height: calc(100% - 60px);
    overflow-x: auto;
    overflow-y: auto;
    padding: 1.2rem;
    font-size: 0.85rem;
    line-height: 1.5;
    font-family: 'Courier New', monospace;
    box-sizing: border-box;
    width: 100%;
}

.code-line {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.25rem;
}

.line-number {
    flex-shrink: 0;
    width: 40px;
    text-align: right;
    margin-right: 1rem;
    color: rgba(255, 255, 255, 0.4);
    font-weight: 500;
    user-select: none;
}

.code-text {
    flex: 1;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.code-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.code-indicator.active {
    background: var(--primary);
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.6);
}

/* ===== DOWNLOAD SECTION ===== */
.download {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.download-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
}

.download-title {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.download-description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}

.download-buttons {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 1.25rem 2.5rem;
    background: var(--white);
    color: var(--gray-900);
    border-radius: var(--radius-xl);
    text-decoration: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-xl);
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(255, 255, 255, 0.3);
}

.btn-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.btn-icon {
    width: 2rem;
    height: 2rem;
    color: var(--primary);
}

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

.btn-label {
    font-size: 0.75rem;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

.btn-title {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
}

.download-note {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.download-note p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.footer-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
}

.footer-text h3 {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.footer-text p {
    color: var(--gray-400);
    font-size: 0.875rem;
}

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

.footer-section h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.footer-section a {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-400);
    font-size: 0.875rem;
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate-element {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-element.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.hero-title,
.hero-description,
.hero-buttons {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.hero-title.animate-in,
.hero-description.animate-in,
.hero-buttons.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.phone-mockup {
    animation: float 6s ease-in-out infinite;
}

.feature-icon {
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    animation: pulse 1s ease-in-out;
}

/* Navigation Animation - Dark theme only */
.nav-scrolled {
    background: rgba(15, 23, 42, 0.95) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
    box-shadow: var(--shadow-lg) !important;
}

.nav-scrolled .nav-title {
    color: var(--white) !important;
}

.nav-scrolled .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
}

.nav-scrolled .nav-link:hover {
    color: var(--white) !important;
    background: rgba(139, 92, 246, 0.2) !important;
}

.nav-scrolled .nav-link.active {
    color: var(--white) !important;
    background: var(--primary) !important;
}

.nav-scrolled .nav-toggle span {
    background: var(--white) !important;
}

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

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

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

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 4rem;
        right: 0;
        width: 100%;
        height: calc(100vh - 4rem);
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding-top: var(--spacing-xl);
        transform: translateX(100%);
        transition: transform var(--transition-normal);
        z-index: 999;
        display: flex !important;
    }
    
    .nav-links.nav-active {
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1.125rem;
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--gray-200);
        width: 80%;
        text-align: center;
    }
    
    /* Carousel responsive */
    .carousel-arrow {
        display: none;
    }
    
    .screenshots-carousel-container {
        padding: 0 var(--spacing-md);
    }
    
    .screenshot-caption {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    }
    
    .screenshot-caption h4 {
        font-size: 1.125rem;
    }
    
    .screenshot-caption p {
        font-size: 0.8rem;
    }
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: var(--white);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 6px;
}

/* Lazy Loading */
img.lazy {
    opacity: 0;
    transition: opacity 0.3s;
}

img.lazy.loaded {
    opacity: 1;
}

/* Focus States */
.btn:focus,
a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.nav-link:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--primary);
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    [data-theme="dark"] .navbar {
        background: rgba(17, 24, 39, 0.9);
        border-bottom-color: var(--gray-700);
    }
    
    [data-theme="dark"] .nav-title,
    [data-theme="dark"] .nav-link {
        color: var(--gray-200);
    }
    
    [data-theme="dark"] .nav-link:hover {
        color: var(--primary-light);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .phone-mockup {
        animation: none;
    }
}

/* ===== RESPONSIVE DESIGN ===== */

/* ABSOLUTE FORCE: Buttons MUST be side by side */
/* Force buttons to be side by side in original layout */
.opensource-buttons {
    display: flex !important;
    flex-direction: row !important;
    gap: 1rem !important;
    flex-wrap: wrap !important;
}

.opensource-buttons .btn {
    flex: 0 0 auto !important;
    display: inline-flex !important;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(17, 24, 39, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 1.5rem;
        z-index: 999;
        transition: all 0.3s ease;
        padding-top: 5rem;
    }
    
    .nav-links.nav-active {
        display: flex;
    }
    
    .nav-link {
        color: white !important;
        font-size: 1.4rem;
        font-weight: 600;
        padding: 1.2rem 2.5rem;
        border-radius: 1rem;
        transition: all 0.3s ease;
        background: rgba(255, 255, 255, 0.15);
        border: 2px solid rgba(139, 92, 246, 0.4);
        backdrop-filter: blur(10px);
        box-shadow: 0 8px 15px -3px rgba(0, 0, 0, 0.4);
        text-align: center;
        min-width: 220px;
        text-decoration: none;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    }
    
    .nav-link:hover, .nav-link.active {
        background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
        color: white !important;
        transform: translateY(-3px);
        box-shadow: 0 15px 25px -5px rgba(139, 92, 246, 0.5);
        border-color: var(--primary-light);
        text-shadow: none;
    }
    
    .nav-mobile {
        display: block;
    }
    
    .nav-toggle {
        position: relative;
        z-index: 1000;
        background: rgba(139, 92, 246, 0.1);
        border-radius: 0.5rem;
        backdrop-filter: blur(10px);
        border: 1px solid rgba(139, 92, 246, 0.2);
        width: 40px;
        height: 40px;
    }
    
    .nav-toggle span {
        background: white !important;
        transition: all 0.3s ease;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
        width: 20px;
        height: 2px;
    }
    
    .nav-toggle span:nth-child(1) {
        transform: translate(-50%, calc(-50% - 6px));
    }
    
    .nav-toggle span:nth-child(2) {
        transform: translate(-50%, -50%);
    }
    
    .nav-toggle span:nth-child(3) {
        transform: translate(-50%, calc(-50% + 6px));
    }
    
    .nav-toggle-active {
        background: rgba(139, 92, 246, 0.2) !important;
    }
    
    .nav-toggle-active span {
        background: var(--primary) !important;
    }
    
    .nav-toggle-active span:nth-child(1) {
        transform: translate(-50%, -50%) rotate(45deg);
    }
    
    .nav-toggle-active span:nth-child(2) {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0);
    }
    
    .nav-toggle-active span:nth-child(3) {
        transform: translate(-50%, -50%) rotate(-45deg);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* Features - iPad Hochformat (weniger Platz) */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .feature-icon {
        width: 2.5rem;
        height: 2.5rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .feature-title {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .feature-description {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .about-highlights {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .opensource-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .opensource-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .opensource-buttons {
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: var(--spacing-sm) !important;
        justify-content: flex-start !important;
    }
    
    .opensource-buttons .btn {
        flex: 0 1 auto !important;
        min-width: 100px !important;
        max-width: 48% !important;
        width: auto !important;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .phone-mockup {
        transform: rotate(0deg);
        scale: 0.8;
    }
    
    .screenshots-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Features - Handy (nur kleiner, nicht mehr pro Reihe) */
    .features-grid {
        grid-template-columns: 1fr !important;
        gap: var(--spacing-md);
    }
    
    .feature-card {
        padding: var(--spacing-md);
    }
    
    .feature-icon {
        width: 2rem;
        height: 2rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .feature-title {
        font-size: 1rem;
        margin-bottom: var(--spacing-xs);
    }
    
    .feature-description {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .about-highlights {
        grid-template-columns: 1fr;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .download-btn {
        padding: 1rem 2rem;
    }
    
    .btn-content {
        gap: var(--spacing-sm);
    }
    
    /* Carousel improvements for small screens */
    .screenshots-carousel-container {
        margin: 0 var(--spacing-sm);
    }
    
    .carousel-dots {
        margin-top: var(--spacing-md);
    }
    
    .carousel-dots .dot {
        width: 10px;
        height: 10px;
    }
    
    .screenshot-caption {
        padding: var(--spacing-md) var(--spacing-sm) var(--spacing-sm);
    }
    
    .screenshot-caption h4 {
        font-size: 1rem;
    }
    
    .screenshot-caption p {
        font-size: 0.75rem;
    }
    
    /* Navigation improvements */
    .nav-toggle {
        z-index: 1001;
    }
    
    .nav-links {
        z-index: 1000;
    }
}

/* ===== CODE CAROUSEL ===== */
.code-carousel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
    position: relative;
    user-select: none;
    padding: var(--spacing-lg) 2rem;
    overflow: visible;
    width: 100%;
    box-sizing: border-box;
}

.code-window-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    height: 450px;
    perspective: 1500px;
    margin: 0;
    box-sizing: border-box;
}

.code-window {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gray-900);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
}

.code-window:nth-child(1) {
    z-index: 10;
    transform: translateY(0px) scale(1) rotateY(0deg);
    opacity: 1;
}

.code-window:nth-child(2) {
    z-index: 9;
    transform: translateY(15px) scale(0.95) rotateY(-8deg);
    opacity: 0.8;
}

.code-window:nth-child(3) {
    z-index: 8;
    transform: translateY(30px) scale(0.9) rotateY(-16deg);
    opacity: 0.6;
}

.code-window:nth-child(4) {
    z-index: 7;
    transform: translateY(45px) scale(0.85) rotateY(-24deg);
    opacity: 0.4;
}

.code-window:nth-child(5) {
    z-index: 6;
    transform: translateY(60px) scale(0.8) rotateY(-32deg);
    opacity: 0.2;
}

.code-window:nth-child(6) {
    z-index: 5;
    transform: translateY(75px) scale(0.75) rotateY(-40deg);
    opacity: 0.1;
}

.code-window.transitioning {
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.code-navigation {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.code-nav-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    color: var(--white);
}

.code-nav-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

.code-nav-btn svg {
    width: 20px;
    height: 20px;
}

.code-indicators {
    display: flex;
    gap: var(--spacing-xs);
}

.code-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.code-indicator.active {
    background: var(--primary);
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.6);
}

/* iPad Querformat und größere Tablets */
@media (min-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr) !important;
        gap: var(--spacing-lg);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .feature-icon {
        width: 2.8rem;
        height: 2.8rem;
    }
    
    .feature-title {
        font-size: 1.15rem;
    }
    
    .feature-description {
        font-size: 0.92rem;
    }
}

/* Responsive Design mit präziser Mathematik */
@media (max-width: 1024px) {
    /* OpenSource Section - Tablet (1024px) */
    .opensource-container {
        padding: 0 calc(1024px * 0.039); /* ~40px für 1024px */
        max-width: none;
        overflow-x: hidden;
    }
    
    .opensource-content {
        grid-template-columns: 1fr;
        gap: calc(1024px * 0.047); /* ~48px für 1024px */
    }
    
    .opensource-title {
        font-size: calc(1024px * 0.0352); /* ~36px für 1024px */
    }
    
    .opensource-stats {
        grid-template-columns: repeat(auto-fit, minmax(140px, auto));
        gap: calc(1024px * 0.0195); /* ~20px für 1024px */
    }
    
    .stat-item {
        padding: calc(1024px * 0.0176) calc(1024px * 0.0234); /* ~18px 24px */
        flex-shrink: 0;
    }
    
    /* Buttons side by side for tablet/iPad */
    .opensource-buttons {
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: var(--spacing-sm) !important;
        width: 100%;
        justify-content: flex-start !important;
        max-width: 100%;
    }
    
    .opensource-buttons .btn {
        flex: 0 1 auto !important;
        min-width: 110px !important;
        max-width: 48% !important;
        justify-content: center;
        text-align: center;
        box-sizing: border-box;
        width: auto !important;
    }
    
    
    /* Code Carousel - Tablet */
    .code-window-container {
        width: 100%;
        max-width: calc(1024px * 0.625); /* 640px für 1024px */
        height: calc(1024px * 0.41); /* ~420px für 1024px */
        margin: 0;
        box-sizing: border-box;
    }
    
    .code-content {
        font-size: calc(1024px * 0.0137); /* ~14px für 1024px */
        padding: calc(1024px * 0.0156); /* ~16px für bessere Nutzung */
        height: calc(100% - 50px); /* Relative zur Container-Höhe */
        overflow-x: auto;
        overflow-y: auto;
        line-height: 1.5;
        box-sizing: border-box;
    }
    
    .code-header {
        padding: calc(1024px * 0.0156) calc(1024px * 0.0234); /* ~16px 24px */
    }
    
    .code-title {
        font-size: calc(1024px * 0.0127); /* ~13px für 1024px */
    }
    
    .code-nav-btn {
        width: calc(1024px * 0.0371); /* ~38px */
        height: calc(1024px * 0.0371); /* ~38px */
    }
    
    .code-nav-btn svg {
        width: calc(1024px * 0.0195); /* ~20px */
        height: calc(1024px * 0.0195); /* ~20px */
    }
    
    .line-number {
        width: calc(1024px * 0.0371); /* ~38px */
        font-size: calc(1024px * 0.0127); /* ~13px */
    }
    
    .code-text {
        font-size: calc(1024px * 0.0127); /* ~13px */
    }
}

@media (max-width: 768px) {
    /* OpenSource Section - Mobile Large */
    .opensource {
        padding: var(--spacing-2xl) 0;
    }
    
    .opensource-container {
        padding: 0 var(--spacing-md);
        max-width: 100%;
        overflow-x: hidden;
        box-sizing: border-box;
    }
    
    .opensource-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
        width: 100%;
    }
    
    .opensource-text {
        max-width: 100%;
        word-wrap: break-word;
        overflow-wrap: break-word;
        box-sizing: border-box;
    }
    
    .opensource-buttons {
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: var(--spacing-xs) !important;
        width: 100%;
        justify-content: flex-start !important;
        max-width: 100%;
    }
    
    .opensource-buttons .btn {
        flex: 0 1 auto !important;
        min-width: 100px !important;
        max-width: 48% !important;
        justify-content: center;
        text-align: center;
        box-sizing: border-box;
        width: auto !important;
    }
    
    .opensource-title {
        font-size: 1.8rem;
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
    
    .title-icon {
        width: 2rem;
        height: 2rem;
        margin: 0 auto;
    }
    
    .opensource-description {
        font-size: 1rem;
    }
    
    .opensource-stats {
        grid-template-columns: repeat(auto-fit, minmax(130px, auto));
        gap: var(--spacing-sm);
    }
    
    .stat-item {
        flex-shrink: 0;
    }
    
    .opensource-buttons {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
    /* Code Carousel - Mobile Large */
    .code-window-container {
        width: 500px;
        max-width: calc(100vw - 3rem);
        height: calc(768px * 0.456); /* ~350px für 768px */
        box-sizing: border-box;
        margin: 0 auto;
    }
    
    .code-carousel {
        padding: var(--spacing-lg) 2rem;
    }
    
    .code-content {
        font-size: calc(768px * 0.0156); /* ~12px für 768px */
        padding: calc(768px * 0.0208); /* ~16px */
        height: calc(100% - 45px); /* Relative zur Container-Höhe */
        line-height: 1.4;
        overflow-x: auto;
        overflow-y: auto;
        box-sizing: border-box;
        max-width: 100%;
    }
    
    .code-header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .code-title {
        font-size: 0.7rem;
    }
    
    .code-dots {
        gap: 0.25rem;
    }
    
    .dot {
        width: 0.5rem;
        height: 0.5rem;
    }
    
    .code-nav-btn {
        width: 32px;
        height: 32px;
    }
    
    .code-nav-btn svg {
        width: 16px;
        height: 16px;
    }
    
    .code-indicator {
        width: 8px;
        height: 8px;
    }
    
    .line-number {
        width: 30px;
        font-size: 0.65rem;
        margin-right: 0.5rem;
        flex-shrink: 0;
    }
    
    .code-text {
        font-size: 0.65rem;
        word-break: break-word;
        overflow-wrap: anywhere;
    }
    
    /* Stack effect adjustments for mobile */
    .code-window:nth-child(2) {
        transform: translateY(8px) scale(0.96) rotateY(-4deg);
    }
    
    .code-window:nth-child(3) {
        transform: translateY(16px) scale(0.92) rotateY(-8deg);
    }
    
    .code-window:nth-child(4) {
        transform: translateY(24px) scale(0.88) rotateY(-12deg);
    }
    
    .code-window:nth-child(5) {
        transform: translateY(32px) scale(0.84) rotateY(-16deg);
    }
    
    .code-window:nth-child(6) {
        transform: translateY(40px) scale(0.8) rotateY(-20deg);
    }
}

@media (max-width: 480px) {
    /* About Section - Mobile Card Details */
    .detail-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
        padding: var(--spacing-sm) 0;
    }
    
    .detail-label {
        font-size: 0.8rem;
        font-weight: var(--font-weight-semibold);
        color: var(--gray-700);
    }
    
    .detail-value {
        font-size: 0.8rem;
        font-weight: var(--font-weight-medium);
        color: var(--gray-600);
        line-height: 1.4;
        word-wrap: break-word;
        overflow-wrap: break-word;
        width: 100%;
        text-align: left;
    }

    /* OpenSource Section - Mobile Responsive */
    .opensource {
        padding: var(--spacing-xl) 0;
    }
    
    .opensource-container {
        padding: 0 var(--spacing-xs);
        max-width: 100%;
        overflow-x: hidden;
        box-sizing: border-box;
    }
    
    .opensource-title {
        font-size: 1.3rem;
        text-align: center;
        flex-wrap: wrap;
        justify-content: center;
        word-wrap: break-word;
    }
    
    .title-icon {
        width: 1.8rem;
        height: 1.8rem;
    }
    
    .title-icon svg {
        width: 1rem;
        height: 1rem;
    }
    
    .opensource-description {
        font-size: 0.85rem;
        line-height: 1.5;
        text-align: left;
        word-wrap: break-word;
        overflow-wrap: break-word;
        hyphens: auto;
    }
    
    .opensource-stats {
        grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
        gap: var(--spacing-xs);
        justify-items: stretch;
        margin: var(--spacing-md) 0;
    }
    
    .stat-item {
        padding: var(--spacing-xs);
        flex-shrink: 0;
        min-width: 0;
        overflow: hidden;
        box-sizing: border-box;
    }
    
    .stat-icon {
        font-size: 1.2rem;
    }
    
    .stat-number {
        font-size: 1rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .opensource-buttons {
        flex-direction: row !important;
        flex-wrap: wrap !important;
        gap: var(--spacing-xs) !important;
        width: 100%;
        justify-content: flex-start !important;
        max-width: 100%;
    }
    
    .opensource-buttons .btn {
        padding: 0.6rem 0.8rem;
        flex: 0 1 auto !important;
        min-width: 100px !important;
        max-width: 48% !important;
        justify-content: center;
        text-align: center;
        font-size: 0.8rem;
        word-wrap: break-word;
        overflow-wrap: break-word;
        box-sizing: border-box;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        width: auto !important;
    }
    
    /* Code Carousel - Mobile Responsive */
    .code-window-container {
        width: 100%;
        max-width: calc(100vw - 1rem);
        height: 240px;
        margin: 0 auto;
        box-sizing: border-box;
    }
    
    .code-carousel {
        padding: var(--spacing-md) 0.5rem;
    }
    
    .code-content {
        height: calc(100% - 35px);
        font-size: 0.5rem;
        line-height: 1.2;
        padding: 0.4rem;
        overflow-x: auto;
        overflow-y: auto;
        box-sizing: border-box;
        max-width: 100%;
        width: 100%;
    }
    
    .code-line {
        white-space: pre;
        overflow-x: visible;
    }
    
    .code-header {
        padding: 0.3rem 0.5rem;
        min-height: 35px;
        box-sizing: border-box;
    }
    
    .code-title {
        font-size: 0.5rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .code-dots {
        gap: 0.2rem;
    }
    
    .dot {
        width: 0.4rem;
        height: 0.4rem;
    }
    
    .code-navigation {
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .code-nav-btn {
        width: 28px;
        height: 28px;
    }
    
    .code-nav-btn svg {
        width: 14px;
        height: 14px;
    }
    
    .code-indicator {
        width: 6px;
        height: 6px;
    }
    
    .line-number {
        width: 20px;
        font-size: 0.45rem;
        margin-right: 0.3rem;
        flex-shrink: 0;
        text-align: right;
    }
    
    .code-text {
        font-size: 0.45rem;
        word-break: break-word;
        overflow-wrap: break-word;
        flex: 1;
        min-width: 0;
    }
    
    .code-line {
        margin-bottom: 0.15rem;
    }
    
    /* Minimal stack effect for small screens */
    .code-window:nth-child(2) {
        transform: translateY(6px) scale(0.97) rotateY(-3deg);
    }
    
    .code-window:nth-child(3) {
        transform: translateY(12px) scale(0.94) rotateY(-6deg);
    }
    
    .code-window:nth-child(4) {
        transform: translateY(18px) scale(0.91) rotateY(-9deg);
    }
    
    .code-window:nth-child(5) {
        transform: translateY(24px) scale(0.88) rotateY(-12deg);
    }
    
    .code-window:nth-child(6) {
        transform: translateY(30px) scale(0.85) rotateY(-15deg);
    }
}