/* ================================================
   DRIVIN' - Cinematic Landing Page Styles
   Night Drive Theme with Neon Accents
   ================================================ */

/* CSS Variables */
:root {
    /* Colors - Night Drive Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    /* Neon Accent Colors */
    --accent-primary: #00f0ff;
    --accent-secondary: #ff00aa;
    --accent-tertiary: #ffaa00;
    --accent-glow: rgba(0, 240, 255, 0.5);
    
    /* Gradients */
    --gradient-neon: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --gradient-dark: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    --gradient-radial: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 70%);
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
    
    /* Spacing */
    --section-padding: clamp(80px, 15vh, 150px);
    --container-max: 1400px;
    --container-padding: clamp(20px, 5vw, 60px);
    
    /* Animation */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ================================================
   Loading Screen
   ================================================ */
.loader {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

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

.loader-logo {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 900;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    animation: pulse 2s ease-in-out infinite;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto 1rem;
}

.loader-progress {
    width: 0%;
    height: 100%;
    background: var(--gradient-neon);
    border-radius: 3px;
    transition: width 0.3s ease;
    animation: loading 2s ease-in-out forwards;
}

.loader-text {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

@keyframes loading {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

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

/* ================================================
   3D Canvas Container
   ================================================ */
#canvas-container {
    position: fixed;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}

#canvas-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ================================================
   Navigation
   ================================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.5rem var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(180deg, rgba(10, 10, 15, 0.9) 0%, transparent 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 0.6rem 1.5rem !important;
    background: var(--gradient-neon) !important;
    color: var(--bg-primary) !important;
    border-radius: 4px;
    font-weight: 600 !important;
}

.nav-cta:hover {
    box-shadow: 0 0 30px var(--accent-glow);
}

/* Mobile Nav */
@media (max-width: 768px) {
    .nav-links a:not(.nav-cta) {
        display: none;
    }
}

/* ================================================
   Hero Section
   ================================================ */
.hero {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--container-padding);
    padding-top: 100px;
}

.hero-content {
    max-width: 700px;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 50px;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 2rem;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.badge-icon {
    font-size: 0.9rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 900;
    line-height: 1;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
    animation: fadeInUp 0.8s ease backwards;
}

.title-line:nth-child(1) { animation-delay: 0.3s; }
.title-line:nth-child(2) { animation-delay: 0.4s; }
.title-line:nth-child(3) { animation-delay: 0.5s; }

.title-line.accent {
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2rem;
    animation: fadeInUp 0.8s ease 0.7s backwards;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.hero-scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    animation: fadeIn 1s ease 1.5s backwards;
}

.hero-scroll-indicator span {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--text-muted);
    border-radius: 10px;
    position: relative;
}

.scroll-arrow::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.3; }
}

/* ================================================
   Buttons
   ================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.btn-primary {
    background: var(--gradient-neon);
    color: var(--bg-primary);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(0, 240, 255, 0.5);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
}

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

/* ================================================
   Section Common Styles
   ================================================ */
section {
    position: relative;
    z-index: 10;
    padding: var(--section-padding) var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: 1rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    text-transform: uppercase;
}

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

/* ================================================
   Features Section
   ================================================ */
.features {
    background: var(--gradient-radial);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: var(--container-max);
    margin: 0 auto;
}

.feature-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 2.5rem;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-neon);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-smooth);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 240, 255, 0.2);
    transform: translateY(-5px);
}

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

.feature-icon {
    width: 50px;
    height: 50px;
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    color: var(--accent-primary);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}

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

/* ================================================
   Experience Section
   ================================================ */
.experience {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 80vh;
    background: linear-gradient(90deg, var(--bg-primary) 50%, transparent 50%);
}

@media (max-width: 968px) {
    .experience {
        grid-template-columns: 1fr;
        background: var(--bg-primary);
    }
}

.experience-content {
    max-width: 500px;
}

.experience-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin: 1.5rem 0 2rem;
    line-height: 1.8;
}

.experience-list {
    list-style: none;
}

.experience-list li {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 0;
    font-size: 1rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.list-icon {
    color: var(--accent-primary);
    font-size: 0.6rem;
}

.experience-visual {
    position: relative;
    height: 100%;
    min-height: 400px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    overflow: hidden;
}

.speed-lines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 50px,
        rgba(0, 240, 255, 0.03) 50px,
        rgba(0, 240, 255, 0.03) 51px
    );
    animation: speedLines 20s linear infinite;
}

@keyframes speedLines {
    0% { transform: translateX(0); }
    100% { transform: translateX(-100px); }
}

/* ================================================
   Gallery Section
   ================================================ */
.gallery {
    background: var(--bg-secondary);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: var(--container-max);
    margin: 0 auto;
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

.gallery-item {
    aspect-ratio: 16/9;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    background: var(--bg-tertiary);
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: auto;
}

@media (max-width: 768px) {
    .gallery-item.large {
        grid-column: span 1;
        grid-row: span 1;
        aspect-ratio: 16/9;
    }
}

.gallery-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.gallery-placeholder span {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.gallery-placeholder p {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ================================================
   Download Section
   ================================================ */
.download {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.download-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(0, 240, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 50%, rgba(255, 0, 170, 0.1) 0%, transparent 50%),
        var(--bg-primary);
}

.download-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.download-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    text-transform: uppercase;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.download-title span {
    display: block;
}

.download-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.download-info {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ================================================
   Footer
   ================================================ */
.footer {
    background: var(--bg-secondary);
    padding: 3rem var(--container-padding);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--gradient-neon);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ================================================
   Animations
   ================================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Scroll-triggered animations */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ================================================
   Mobile Fallback (No 3D)
   ================================================ */
@media (max-width: 768px) {
    .hero {
        background: 
            radial-gradient(ellipse at 70% 30%, rgba(0, 240, 255, 0.15) 0%, transparent 50%),
            radial-gradient(ellipse at 30% 70%, rgba(255, 0, 170, 0.1) 0%, transparent 50%),
            var(--bg-primary);
    }
}

/* ================================================
   Utility Classes
   ================================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Performance: Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}