:root {
    --bg-dark: #0a0a0f;
    --bg-card: rgba(20, 20, 30, 0.6);
    --bg-card-hover: rgba(30, 30, 45, 0.8);
    --accent-cyan: #00e5ff;
    --accent-blue: #2979ff;
    --text-main: #f0f0f5;
    --text-muted: #a0a0b0;
    --border-color: rgba(0, 229, 255, 0.2);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Noise overlay for texture */
#noise-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none;
    z-index: 10000;
    opacity: 0.03;
    background-image: url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)"/%3E%3C/svg%3E');
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
}

a {
    text-decoration: none;
    color: var(--text-main);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
    position: relative;
}

.glass-section {
    background: radial-gradient(circle at right center, rgba(41, 121, 255, 0.05) 0%, transparent 50%),
                radial-gradient(circle at left center, rgba(0, 229, 255, 0.05) 0%, transparent 50%);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo span {
    color: var(--accent-cyan);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links li a {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

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

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: clamp(3rem, 5vw, 5.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    font-family: var(--font-heading);
    transition: all 0.3s ease;
    cursor: pointer;
}

.primary-btn {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
    color: #fff;
    box-shadow: 0 5px 20px rgba(0, 229, 255, 0.3);
}

.primary-btn:hover {
    box-shadow: 0 8px 30px rgba(0, 229, 255, 0.5);
    transform: translateY(-2px);
}

.secondary-btn {
    background: transparent;
    border: 1px solid var(--text-muted);
    color: var(--text-main);
}

.secondary-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.floating-card {
    width: 100%;
    max-width: 450px;
    border-radius: 20px;
    animation: float 6s ease-in-out infinite;
    box-shadow: 0 30px 60px rgba(0, 229, 255, 0.2);
}

@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

/* Sections General */
.section-header {
    margin-bottom: 4rem;
}

.section-header.center {
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.header-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-cyan), transparent);
    border-radius: 2px;
}

/* Grids */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.align-center {
    align-items: center;
}

.text-block h3 {
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
}

.text-block p {
    color: var(--text-muted);
}

/* Pillars */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.pillar-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    backdrop-filter: blur(10px);
}

.pillar-card:hover {
    transform: translateY(-10px);
    background: var(--bg-card-hover);
    border-color: var(--border-color);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

.pillar-icon {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.05);
    margin-bottom: 1rem;
    line-height: 1;
}

.pillar-card:hover .pillar-icon {
    color: var(--accent-blue);
    opacity: 0.5;
}

.pillar-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.pillar-card h4 {
    font-size: 0.9rem;
    color: var(--accent-cyan);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

/* Showcase Section */
.glow-img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 0 80px rgba(0, 229, 255, 0.15);
}

.highlight-text {
    font-size: 1.2rem;
    color: var(--text-main);
    margin-bottom: 2rem;
    border-left: 3px solid var(--accent-cyan);
    padding-left: 1rem;
}

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

.feature-list li {
    margin-bottom: 1.5rem;
    position: relative;
    padding-left: 2rem;
    color: var(--text-muted);
}

.feature-list li::before {
    content: "•";
    color: var(--accent-cyan);
    font-size: 2rem;
    position: absolute;
    left: 0;
    top: -8px;
}

.feature-list li strong {
    color: var(--text-main);
    display: block;
    margin-bottom: 0.3rem;
}

/* Mechanics Tabs */
.mechanics-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 1rem;
}

.tab-btn {
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--text-muted);
    transition: all 0.3s ease;
    border-radius: 8px;
}

.tab-btn:hover {
    background: rgba(255,255,255,0.05);
}

.tab-btn.active {
    color: var(--accent-cyan);
    background: rgba(0, 229, 255, 0.1);
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease-out forwards;
}

.tab-content.active {
    display: block;
}

.tab-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.tab-content > p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
}

.use-case, .feature-box {
    background: rgba(20, 20, 30, 0.4);
    padding: 2rem;
    border-radius: 12px;
    border-left: 2px solid var(--accent-blue);
}

.use-case h4, .feature-box h4 {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.use-case p, .feature-box p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.mobility-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* Impact */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.impact-item {
    text-align: center;
}

.impact-number {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    background: linear-gradient(180deg, var(--accent-cyan), transparent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.impact-item h3 {
    margin-bottom: 0.8rem;
}

.impact-item p {
    color: var(--text-muted);
}

/* Timeline */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    height: 100%;
    width: 2px;
    background: rgba(0, 229, 255, 0.2);
}

.timeline-item {
    position: relative;
    padding-left: 50px;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 8px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 15px var(--accent-cyan);
}

.timeline-content {
    background: var(--bg-card);
    padding: 1.5rem 2rem;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.05);
}

.timeline-content h3 {
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Footer */
.footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    margin-top: 4rem;
}

.small-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.observe-me {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.observe-me.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    animation: fadeInUp 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards;
}

.fade-in {
    opacity: 0;
    animation: fadeInStatic 1.5s ease-out 0.5s forwards;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInStatic {
    to { opacity: 1; }
}

/* Impact Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-box {
    padding: 2rem;
    background: rgba(0, 229, 255, 0.03);
    border: 1px solid rgba(0, 229, 255, 0.1);
    border-radius: 12px;
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.stat-box:hover {
    transform: translateY(-5px);
    background: rgba(0, 229, 255, 0.08);
}

.stat-box h3 {
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
    font-family: var(--font-heading);
    word-break: break-word;
    width: 100%;
}


/* Dimensions Grid */
.dimensions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.center-line {
    margin: 0 auto 2rem;
}

.dimension-box {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border-top: 2px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.dimension-box:hover {
    border-top-color: var(--accent-blue);
    background: var(--bg-card-hover);
}

.dim-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.dimension-box h4 {
    font-size: 1.15rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

/* ROI Cards */
.roi-card {
    background: linear-gradient(145deg, rgba(20,20,30,0.8), rgba(10,10,15,0.9));
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.05);
}

.financial-card {
    border-top: 3px solid var(--accent-cyan);
}

.environment-card {
    border-top: 3px solid #00e676; /* Green accent */
}

.roi-card h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

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

.data-list li {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.data-list li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.data-list li strong {
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        justify-content: center;
        text-align: center;
        padding-top: 10rem;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .grid-2-col, .mobility-features {
        grid-template-columns: 1fr;
    }
    
    .impact-grid, .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .showcase-section .image-wrapper {
        order: -1;
        margin-bottom: 2rem;
    }

    .data-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

@media (max-width: 600px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
}