/*
===================================================================================
    Project: Image Classification Dataset
    Description: Advanced CSS with unique features and animations
    
    Author: Molla Samser
    Email: help@rskworld.in
    Phone: +91 93305 39277
    Website: https://rskworld.in
    
    © 2025 RSK World. All rights reserved.
===================================================================================
*/

/* ============================================
   CSS Variables & Root Configuration
============================================ */
:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0f1a;
    --bg-secondary: #0d1525;
    --bg-tertiary: #131d33;
    
    /* Accent Colors - Vibrant Gradient */
    --accent-primary: #00d4ff;
    --accent-secondary: #ff6b6b;
    --accent-tertiary: #7b68ee;
    --accent-success: #00e676;
    --accent-warning: #ffc107;
    --accent-pink: #f093fb;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a8b2c3;
    --text-muted: #6b7280;
    
    /* Surface Colors */
    --surface-1: rgba(255, 255, 255, 0.03);
    --surface-2: rgba(255, 255, 255, 0.06);
    --surface-3: rgba(255, 255, 255, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #7b68ee 50%, #ff6b6b 100%);
    --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0, 212, 255, 0.4) 0%, rgba(123, 104, 238, 0.4) 100%);
    
    /* Border & Shadows */
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
    
    /* Typography */
    --font-primary: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --container-width: 1280px;
    --section-padding: 100px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1a1a2e;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --surface-1: rgba(0, 0, 0, 0.03);
    --surface-2: rgba(0, 0, 0, 0.06);
    --surface-3: rgba(0, 0, 0, 0.1);
    --border-color: rgba(0, 0, 0, 0.1);
}

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background var(--transition-normal), color var(--transition-normal);
}

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

ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Preloader
============================================ */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.neural-network-loader {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
}

.neuron {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

.neuron.n1 { top: 0; left: 50%; transform: translateX(-50%); }
.neuron.n2 { top: 30%; left: 10%; animation-delay: 0.2s; }
.neuron.n3 { top: 30%; right: 10%; animation-delay: 0.4s; }
.neuron.n4 { top: 70%; left: 20%; animation-delay: 0.6s; }
.neuron.n5 { top: 70%; right: 20%; animation-delay: 0.8s; }

.connection {
    position: absolute;
    height: 2px;
    background: var(--gradient-primary);
    animation: connectionPulse 1.5s infinite;
}

.connection.c1 { top: 20%; left: 25%; width: 25%; transform: rotate(30deg); }
.connection.c2 { top: 20%; right: 25%; width: 25%; transform: rotate(-30deg); }
.connection.c3 { top: 50%; left: 20%; width: 20%; transform: rotate(45deg); animation-delay: 0.3s; }
.connection.c4 { top: 50%; right: 20%; width: 20%; transform: rotate(-45deg); animation-delay: 0.6s; }

@keyframes pulse {
    0%, 100% { transform: translateX(-50%) scale(1); opacity: 1; }
    50% { transform: translateX(-50%) scale(1.3); opacity: 0.7; }
}

@keyframes connectionPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.loader-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.loader-progress {
    width: 200px;
    height: 4px;
    background: var(--surface-2);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-bar {
    height: 100%;
    background: var(--gradient-primary);
    animation: loading 2s ease-in-out infinite;
}

@keyframes loading {
    0% { width: 0; }
    50% { width: 100%; }
    100% { width: 0; margin-left: 100%; }
}

/* ============================================
   Animated Background
============================================ */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: floatOrb 20s infinite ease-in-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-primary);
    top: -200px;
    right: -200px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--accent-tertiary);
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--accent-secondary);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -50px) scale(1.1); }
    50% { transform: translate(-30px, 30px) scale(0.9); }
    75% { transform: translate(-50px, -30px) scale(1.05); }
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* ============================================
   Theme Toggle
============================================ */
.theme-toggle {
    position: fixed;
    top: 100px;
    right: 24px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    background: var(--accent-primary);
    transform: scale(1.1);
}

.theme-toggle .fa-sun {
    display: none;
    color: var(--bg-primary);
}

.theme-toggle .fa-moon {
    color: var(--accent-primary);
}

[data-theme="light"] .theme-toggle .fa-sun {
    display: block;
    color: #f59e0b;
}

[data-theme="light"] .theme-toggle .fa-moon {
    display: none;
}

/* ============================================
   Navigation
============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 15, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    transition: var(--transition-normal);
}

[data-theme="light"] .navbar {
    background: rgba(255, 255, 255, 0.9);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    font-size: 1.2rem;
    color: var(--bg-primary);
}

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

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 8px 0;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-contact {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--text-secondary);
}

.nav-contact:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

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

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

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 20px;
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu a {
    padding: 12px 16px;
    background: var(--surface-1);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

/* ============================================
   Hero Section
============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 24px 60px;
    max-width: var(--container-width);
    margin: 0 auto;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: 24px;
    position: relative;
}

.badge-pulse {
    position: absolute;
    left: -5px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: var(--accent-success);
    border-radius: 50%;
    animation: badgePulse 2s infinite;
}

@keyframes badgePulse {
    0%, 100% { transform: translateY(-50%) scale(1); opacity: 1; }
    50% { transform: translateY(-50%) scale(1.5); opacity: 0.5; }
}

.badge-new {
    background: var(--accent-secondary);
    color: white;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 700;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.title-line {
    display: block;
}

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

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 550px;
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-description strong {
    color: var(--accent-primary);
}

.hero-stats {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
    padding: 16px 24px;
    background: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.stat-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.stat-value::after {
    content: '+';
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-glow {
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
}

.btn:hover .btn-shine {
    left: 100%;
}

.btn-secondary {
    background: var(--surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--surface-3);
    border-color: var(--accent-primary);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Hero Visual */
.hero-visual {
    flex: 1;
    position: relative;
}

.visual-3d-container {
    perspective: 1000px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 40px;
}

.rotating-cube {
    width: 150px;
    height: 150px;
    position: relative;
    transform-style: preserve-3d;
    animation: rotateCube 15s infinite linear;
}

@keyframes rotateCube {
    0% { transform: rotateX(0) rotateY(0); }
    100% { transform: rotateX(360deg) rotateY(360deg); }
}

.cube-face {
    position: absolute;
    width: 150px;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    background: var(--gradient-secondary);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-md);
}

.cube-face.front { transform: translateZ(75px); }
.cube-face.back { transform: rotateY(180deg) translateZ(75px); }
.cube-face.right { transform: rotateY(90deg) translateZ(75px); }
.cube-face.left { transform: rotateY(-90deg) translateZ(75px); }
.cube-face.top { transform: rotateX(90deg) translateZ(75px); }
.cube-face.bottom { transform: rotateX(-90deg) translateZ(75px); }

.image-carousel {
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.carousel-track {
    display: flex;
    gap: 16px;
    animation: scroll 20s linear infinite;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.carousel-item {
    flex-shrink: 0;
    text-align: center;
}

.sample-image {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    margin-bottom: 8px;
}

.carousel-item span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ============================================
   Marquee Section
============================================ */
.marquee-section {
    background: var(--gradient-primary);
    padding: 16px 0;
    overflow: hidden;
}

.marquee-track {
    display: flex;
    gap: 60px;
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.marquee-track span {
    flex-shrink: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--bg-primary);
    white-space: nowrap;
}

/* ============================================
   Section Styles
============================================ */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   Features Section
============================================ */
.features-section {
    padding: var(--section-padding) 0;
}

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

.feature-card {
    background: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

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

.feature-card-large {
    grid-column: span 2;
}

.feature-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition-slow);
}

.feature-card:hover .feature-glow {
    opacity: 0.05;
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--bg-primary);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.feature-tags {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.feature-tags span {
    padding: 4px 12px;
    background: var(--surface-2);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--accent-primary);
}

/* ============================================
   Demo Section
============================================ */
.demo-section {
    padding: var(--section-padding) 0;
    background: var(--surface-1);
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.demo-upload-area {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    transition: var(--transition-normal);
    cursor: pointer;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.demo-upload-area:hover,
.demo-upload-area.dragover {
    border-color: var(--accent-primary);
    background: var(--surface-1);
}

.upload-icon {
    font-size: 4rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
}

.upload-content h4 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.upload-content p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.upload-preview {
    position: relative;
    width: 100%;
    height: 100%;
}

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

.remove-preview {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    background: var(--accent-secondary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.demo-results {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.results-header h4 {
    display: flex;
    align-items: center;
    gap: 8px;
}

.processing-indicator {
    display: none;
    align-items: center;
    gap: 8px;
    color: var(--accent-primary);
    font-size: 0.875rem;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--surface-3);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.top-prediction {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.prediction-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--bg-primary);
}

.prediction-confidence {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-primary);
    font-family: var(--font-mono);
}

.all-predictions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.prediction-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.prediction-item-label {
    width: 100px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.prediction-bar {
    flex: 1;
    height: 8px;
    background: var(--surface-2);
    border-radius: 4px;
    overflow: hidden;
}

.prediction-bar-fill {
    height: 100%;
    background: var(--accent-primary);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.prediction-item-value {
    width: 50px;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.prediction-time {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.demo-samples {
    text-align: center;
}

.demo-samples h4 {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.sample-images {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.sample-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.sample-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateY(-3px);
}

.sample-btn i {
    font-size: 1.5rem;
}

/* ============================================
   Gallery Section
============================================ */
.gallery-section {
    padding: var(--section-padding) 0;
}

.gallery-filters {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.gallery-item {
    aspect-ratio: 1;
    background: var(--surface-2);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: var(--transition-normal);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.gallery-item-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.gallery-item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 12px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0;
    transition: var(--transition-fast);
}

.gallery-item:hover .gallery-item-overlay {
    opacity: 1;
}

.gallery-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.page-btn {
    width: 40px;
    height: 40px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.page-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.page-info {
    color: var(--text-secondary);
}

/* ============================================
   Analytics Section
============================================ */
.analytics-section {
    padding: var(--section-padding) 0;
    background: var(--surface-1);
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.analytics-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h4 {
    font-size: 1rem;
    font-weight: 600;
}

.card-header i {
    color: var(--accent-primary);
}

.chart-container {
    height: 250px;
    position: relative;
}

.stats-card {
    grid-column: span 2;
}

.quick-stats {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.quick-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--surface-1);
    border-radius: var(--radius-md);
}

.quick-stat i {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.stat-num {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
}

.stat-text {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============================================
   Categories Section
============================================ */
.categories-section {
    padding: var(--section-padding) 0;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.category-card {
    background: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-image {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.category-info {
    padding: 20px;
}

.category-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.category-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.category-count {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.category-progress {
    height: 4px;
    background: var(--surface-2);
    border-radius: 2px;
    overflow: hidden;
}

.category-progress .progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* ============================================
   Code Examples Section
============================================ */
.usage-section {
    padding: var(--section-padding) 0;
    background: var(--surface-1);
}

.code-tabs {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border-bottom: 2px solid transparent;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: var(--surface-1);
}

.tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    background: var(--bg-secondary);
}

.tab-content { padding: 0; }
.tab-pane { display: none; }
.tab-pane.active { display: block; }

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    background: var(--surface-1);
    border-bottom: 1px solid var(--border-color);
}

.code-header span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.copy-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.tab-pane pre {
    margin: 0;
    padding: 24px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
}

/* Code Syntax Highlighting */
.comment { color: #6a9955; }
.keyword { color: #c586c0; }
.function { color: #dcdcaa; }
.string { color: #ce9178; }
.number { color: #b5cea8; }

/* ============================================
   Download Section
============================================ */
.download-section {
    padding: var(--section-padding) 0;
}

.download-card {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
    background: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.download-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
}

.download-badges {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(0, 230, 118, 0.1);
    color: var(--accent-success);
    border: 1px solid var(--accent-success);
}

.badge-info {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

.download-info h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.download-info p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.download-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.download-features i {
    color: var(--accent-success);
}

.download-action {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 20px;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--surface-2);
    border-radius: var(--radius-md);
}

.file-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
}

.file-name {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
}

.file-size {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.download-progress {
    padding: 16px;
    background: var(--surface-2);
    border-radius: var(--radius-md);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.875rem;
}

.progress-bar-container {
    height: 8px;
    background: var(--surface-1);
    border-radius: 4px;
    overflow: hidden;
}

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

.btn-download {
    background: var(--accent-primary);
    color: var(--bg-primary);
    justify-content: center;
    font-size: 1.1rem;
    padding: 18px 32px;
}

.btn-github {
    background: var(--surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    justify-content: center;
}

.btn-github:hover {
    background: #333;
    color: white;
}

.download-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.download-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ============================================
   Testimonials Section
============================================ */
.testimonials-section {
    padding: var(--section-padding) 0;
    background: var(--surface-1);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stars {
    margin-bottom: 16px;
    color: #ffc107;
}

.testimonial-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--bg-primary);
}

.author-info strong {
    display: block;
    font-size: 0.95rem;
}

.author-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   Contact Section
============================================ */
.contact-section {
    padding: 60px 0;
}

.contact-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    padding: 40px 48px;
}

.contact-info h3 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-primary);
    margin-bottom: 8px;
}

.contact-info p {
    color: rgba(10, 15, 26, 0.7);
    max-width: 400px;
}

.contact-details {
    display: flex;
    gap: 16px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    background: rgba(10, 15, 26, 0.9);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.contact-item:hover {
    background: var(--bg-primary);
    transform: translateY(-3px);
}

.contact-item i {
    color: var(--accent-primary);
}

/* ============================================
   Footer
============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo i {
    color: var(--accent-primary);
}

.footer-brand p {
    color: var(--text-secondary);
    max-width: 300px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-color: var(--accent-primary);
    transform: translateY(-3px);
}

.footer-links h4,
.footer-newsletter h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    color: var(--text-secondary);
    padding: 8px 0;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
    transform: translateX(5px);
}

.footer-newsletter p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    background: var(--surface-1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
}

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

.newsletter-form button {
    padding: 12px 16px;
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.newsletter-form button:hover {
    background: var(--accent-tertiary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom a {
    color: var(--accent-primary);
}

/* ============================================
   Back to Top & Toast
============================================ */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 50px;
    height: 50px;
    background: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-glow);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
}

.toast {
    position: fixed;
    bottom: 100px;
    right: 24px;
    padding: 16px 24px;
    background: var(--accent-success);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    z-index: 9999;
    transform: translateX(150%);
    transition: var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

/* ============================================
   Responsive Design
============================================ */
@media (max-width: 1200px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-card {
        grid-column: span 1;
    }
    
    .quick-stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 140px;
    }
    
    .hero-description {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .download-card {
        grid-template-columns: 1fr;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .testimonials-slider {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .theme-toggle {
        top: auto;
        bottom: 100px;
    }
    
    .feature-card-large {
        grid-column: span 1;
    }
    
    .contact-card {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-details {
        flex-direction: column;
        width: 100%;
    }
    
    .contact-item {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .quick-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .tab-buttons {
        flex-direction: column;
    }
    
    .download-card {
        padding: 24px;
    }
    
    .gallery-filters {
        flex-direction: column;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
    }
}