/* ==============================================
   DigiDapp Store - Complete Styles
   "Decentralize Your Digital Life"
   ============================================== */

/* ===================================
   CSS Variables
   =================================== */
:root {
    /* Quantum Color Palette */
    --primary-color: #00f2ff;
    --primary-dark: #0099cc;
    --primary-light: #66ffff;
    --secondary-color: #ff00ff;
    --accent-color: #ffff00;
    --success-color: #00ff00;
    
    /* Gradients */
    --gradient-quantum: linear-gradient(135deg, #00f2ff 0%, #ff00ff 50%, #ffff00 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-glow: linear-gradient(135deg, rgba(0,242,255,0.2) 0%, rgba(255,0,255,0.2) 100%);
    --gradient-purple: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-pink: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b8c1ec;
    --text-tertiary: #8892b0;
    
    /* Background Colors */
    --bg-dark: #0a192f;
    --bg-darker: #020c1b;
    --bg-light: #112240;
    --bg-lighter: #1d3461;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,242,255,0.1);
    --shadow-md: 0 4px 8px rgba(0,242,255,0.15);
    --shadow-lg: 0 8px 16px rgba(0,242,255,0.2);
    --shadow-xl: 0 16px 32px rgba(0,242,255,0.25);
    --shadow-glow: 0 0 20px rgba(0,242,255,0.5);
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

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

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

/* ===================================
   Particle Canvas
   =================================== */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--bg-dark);
}

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

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.gradient-text {
    background: var(--gradient-quantum);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
    background-size: 200% auto;
}

.glow {
    text-shadow: 0 0 20px rgba(0,242,255,0.5),
                 0 0 40px rgba(0,242,255,0.3);
}

.gradient-bg {
    background: var(--gradient-quantum);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: var(--gradient-quantum);
    color: var(--bg-dark);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,242,255,0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-secondary:hover {
    background: rgba(0,242,255,0.1);
    transform: translateY(-3px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(0,242,255,0.3);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    background: rgba(0,242,255,0.1);
}

.btn-card {
    padding: 10px 20px;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
}

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

.btn-portfolio {
    padding: 8px 20px;
    background: rgba(0,242,255,0.1);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0,242,255,0.3);
    font-size: 0.95rem;
    font-weight: 600;
}

.btn-portfolio:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10,25,47,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-icon {
    font-size: 1.75rem;
    animation: rotate 4s linear infinite;
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-quantum);
    transition: width 0.3s ease;
}

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

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

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

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-content {
    text-align: center;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 20px;
    background: rgba(0,242,255,0.1);
    border: 1px solid rgba(0,242,255,0.3);
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

.badge-icon {
    font-size: 1.25rem;
    animation: rotate 4s linear infinite;
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: var(--spacing-sm);
}

.hero-tagline {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-tertiary);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    line-height: 1.8;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(0,242,255,0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,242,255,0.2);
    transition: var(--transition-normal);
}

.stat-item:hover {
    background: rgba(0,242,255,0.1);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
}

.stat-label {
    color: var(--text-tertiary);
    font-size: 0.95rem;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-categories {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

.category-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 10px 20px;
    background: rgba(0,242,255,0.05);
    border: 1px solid rgba(0,242,255,0.2);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.category-badge:hover {
    background: rgba(0,242,255,0.15);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-color);
    border-radius: 25px;
    position: relative;
    margin: 0 auto 10px;
}

.wheel {
    width: 6px;
    height: 6px;
    background: var(--primary-color);
    border-radius: 50%;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

.scroll-indicator span {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

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

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 8px 20px;
    background: rgba(0,242,255,0.1);
    border: 1px solid rgba(0,242,255,0.3);
    border-radius: 50px;
    color: var(--primary-color);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.section-badge.nft {
    background: rgba(255,0,255,0.1);
    border-color: rgba(255,0,255,0.3);
    color: var(--secondary-color);
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-tertiary);
    max-width: 600px;
    margin: 0 auto;
}

.section-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* ===================================
   Grid Layouts
   =================================== */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.themes-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.nft-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* ===================================
   Item Cards
   =================================== */
.item-card {
    background: rgba(0,242,255,0.03);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,242,255,0.1);
    transition: var(--transition-normal);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.item-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

/* App Cards */
.app-card .card-header {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.app-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-dark);
    border-radius: var(--radius-lg);
    font-size: 2rem;
}

.card-badge {
    padding: 4px 12px;
    background: rgba(0,255,0,0.2);
    color: var(--success-color);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-badge.premium {
    background: rgba(255,215,0,0.2);
    color: #ffd700;
}

.card-content {
    padding: 0 var(--spacing-md) var(--spacing-md);
    flex: 1;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.card-description {
    color: var(--text-tertiary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.card-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.rating, .downloads, .price {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.9rem;
}

.rating {
    color: #ffd700;
}

.downloads {
    color: var(--text-tertiary);
}

.price {
    color: var(--primary-color);
    font-weight: 600;
}

.price.premium {
    color: #ffd700;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    padding: 4px 12px;
    background: rgba(0,242,255,0.1);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    border: 1px solid rgba(0,242,255,0.3);
}

.card-footer {
    padding: var(--spacing-md);
    display: flex;
    gap: var(--spacing-xs);
    border-top: 1px solid rgba(0,242,255,0.1);
}

/* Theme Cards */
.theme-preview {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.theme-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.item-card:hover .theme-preview img {
    transform: scale(1.1);
}

.theme-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.item-card:hover .theme-overlay {
    opacity: 1;
}

.btn-preview {
    padding: 10px 24px;
    background: var(--gradient-quantum);
    color: var(--bg-dark);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Sticker Cards */
.sticker-preview {
    padding: var(--spacing-lg);
    text-align: center;
    background: var(--gradient-glow);
}

.sticker-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-sm);
}

.sticker-icon.animated {
    animation: bounce 2s ease-in-out infinite;
}

.sticker-count {
    color: var(--primary-color);
    font-weight: 600;
}

/* NFT Cards */
.nft-card .nft-preview {
    height: 300px;
    position: relative;
}

.nft-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 6px 16px;
    background: rgba(0,242,255,0.9);
    color: var(--bg-dark);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.nft-badge.rare {
    background: rgba(255,0,255,0.9);
}

.nft-creator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.nft-creator img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
}

.nft-creator span {
    font-size: 0.9rem;
    color: var(--text-tertiary);
}

.nft-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.nft-price, .nft-stock {
    padding: var(--spacing-sm);
    background: rgba(0,242,255,0.05);
    border-radius: var(--radius-sm);
    text-align: center;
}

.nft-price .label,
.nft-stock .label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    display: block;
}

.nft-price .value {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 700;
    font-family: 'Orbitron', sans-serif;
}

.nft-stock .value {
    color: var(--text-primary);
    font-weight: 600;
}

.nft-btn {
    background: var(--gradient-purple);
}

.nft-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102,126,234,0.4);
}

/* Coming Soon Card */
.coming-soon {
    background: var(--gradient-glow);
    border: 2px dashed rgba(0,242,255,0.3);
}

.coming-soon-content {
    padding: var(--spacing-lg);
    text-align: center;
}

.coming-soon-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.coming-soon h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.coming-soon-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.coming-soon-list li {
    margin: var(--spacing-xs) 0;
    color: var(--text-secondary);
}

.coming-soon-list i {
    color: var(--primary-color);
    margin-right: var(--spacing-xs);
}

/* Web3 Info */
.web3-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.info-card {
    padding: var(--spacing-md);
    text-align: center;
    background: rgba(0,242,255,0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,242,255,0.2);
}

.info-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.info-card h4 {
    margin-bottom: var(--spacing-xs);
}

.info-card p {
    font-size: 0.95rem;
    color: var(--text-tertiary);
}

/* ===================================
   About Section
   =================================== */
.about-section {
    background: var(--bg-darker);
}

.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-description {
    font-size: 1.125rem;
    color: var(--text-tertiary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about-features {
    display: grid;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.feature-item {
    display: flex;
    gap: var(--spacing-sm);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-item h4 {
    margin-bottom: 4px;
    color: var(--text-primary);
}

.feature-item p {
    font-size: 0.95rem;
    color: var(--text-tertiary);
}

.about-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.about-visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.visual-card {
    padding: var(--spacing-md);
    background: rgba(0,242,255,0.05);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0,242,255,0.2);
    text-align: center;
    transition: var(--transition-normal);
}

.visual-card:hover {
    background: rgba(0,242,255,0.1);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.visual-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.visual-text h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    color: var(--primary-color);
}

.visual-text p {
    color: var(--text-tertiary);
    font-size: 0.95rem;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-darker);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid rgba(0,242,255,0.1);
}

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

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
}

.footer-tagline {
    font-family: 'Orbitron', sans-serif;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.footer-description {
    color: var(--text-tertiary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-links h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    padding: 4px 0;
    color: var(--text-tertiary);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 8px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(0,242,255,0.1);
    color: var(--text-tertiary);
}

.footer-bottom p {
    margin: var(--spacing-xs) 0;
}

.bismillah {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-top: var(--spacing-sm);
}

/* ===================================
   Notification
   =================================== */
.notification {
    position: fixed;
    top: 100px;
    right: -400px;
    max-width: 350px;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    transition: right 0.5s ease;
}

.notification.show {
    right: 20px;
}

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

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes scroll {
    0% {
        opacity: 0;
        top: 10px;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        top: 30px;
    }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

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

/* Tablets */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile Landscape & Small Tablets */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-dark);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-md) 0;
        gap: 0;
    }
    
    .nav-menu li {
        padding: var(--spacing-sm) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-actions {
        display: none;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .items-grid {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        grid-template-columns: 1fr;
    }
}

/* Mobile Portrait */
@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    #particleCanvas,
    .navbar,
    .scroll-indicator,
    .notification {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ===================================
   Intro Animation Styles
   =================================== */

.intro-sequence {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #0a192f;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 1s ease;
}

.intro-sequence.fade-out {
    opacity: 0;
    pointer-events: none;
}

.intro-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.intro-slide.active {
    opacity: 1;
    transform: scale(1);
}

.intro-image {
    max-width: 80%;
    max-height: 70vh;
    object-fit: contain;
    filter: drop-shadow(0 0 40px rgba(0,242,255,0.5));
}

.intro-text {
    position: absolute;
    bottom: 15%;
    text-align: center;
    padding: 0 2rem;
}

.intro-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.5rem, 4vw, 3rem);
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 20px rgba(0,242,255,0.5);
}

.intro-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--text-secondary);
}

.intro-finale {
    bottom: 20%;
}

.intro-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2rem, 6vw, 4rem);
    background: var(--gradient-quantum);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    animation: pulse 2s ease-in-out infinite;
}

.intro-tagline {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--text-primary);
    font-weight: 600;
}

.intro-skip {
    position: absolute;
    top: 30px;
    right: 30px;
    padding: 12px 24px;
    background: rgba(0,242,255,0.1);
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 10001;
}

.intro-skip:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,242,255,0.4);
}

.intro-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(0,242,255,0.2);
}

.intro-progress-bar {
    height: 100%;
    background: var(--gradient-quantum);
    width: 0%;
    transition: width 0.1s linear;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    .intro-image {
        max-width: 90%;
        max-height: 60vh;
    }
    
    .intro-text {
        bottom: 10%;
    }
    
    .intro-skip {
        top: 20px;
        right: 20px;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .intro-title {
        font-size: clamp(1.2rem, 5vw, 2rem);
    }
    
    .intro-subtitle {
        font-size: clamp(0.9rem, 3vw, 1.2rem);
    }
}

@media (max-width: 480px) {
    .intro-skip {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}