/* Base Variables conforming to the Brand State Vector */
:root {
    --cured-asphalt: #111111;
    --industrial-gold: #FFB612;
    --aggregate-gray: #708090;
    --white: #F8F9FA;
    
    --font-display: 'Roboto Slab', serif;
    --font-body: 'Roboto', sans-serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Setup */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    background-color: var(--cured-asphalt);
}

body {
    font-family: var(--font-body);
    color: var(--white);
    background-color: var(--cured-asphalt);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, .brand-name, .section-kicker {
    font-family: var(--font-display);
    text-transform: uppercase;
    font-weight: 900;
    letter-spacing: 0.05em;
}

/* Components */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: 1rem 2rem;
    font-family: var(--font-display);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
    transition: var(--transition-smooth);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--industrial-gold);
    color: var(--cured-asphalt);
    border-color: var(--industrial-gold);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--industrial-gold);
    box-shadow: 0 0 20px rgba(255, 182, 18, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border-color: var(--aggregate-gray);
}

.btn-secondary:hover {
    border-color: var(--industrial-gold);
    color: var(--industrial-gold);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(17, 17, 17, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(112, 128, 144, 0.2);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    height: 60px;
    width: auto;
}

.footer-logo {
    height: 40px;
    width: auto;
    filter: drop-shadow(0 0 10px rgba(0,0,0,0.5));
}

.brand-name {
    font-size: 1.5rem;
    color: var(--white);
    letter-spacing: 2px;
}

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

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: var(--transition-smooth);
}

.nav-links a:hover {
    color: var(--industrial-gold);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6rem 2rem 2rem;
    background: var(--cured-asphalt);
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    z-index: 0;
    object-fit: cover;
    opacity: 0.6;
}

.hero-geometric {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: 
        linear-gradient(45deg, rgba(255, 182, 18, 0.03) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255, 182, 18, 0.03) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255, 182, 18, 0.03) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255, 182, 18, 0.03) 75%);
    background-size: 40px 40px;
    z-index: 1;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at center, transparent 0%, var(--cured-asphalt) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 1000px;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1.1;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 0px rgba(255,182,18,0.2);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--aggregate-gray);
    margin-bottom: 3rem;
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Stats Section */
.stats-section {
    background-color: #151515;
    border-top: 1px solid rgba(255,182,18,0.2);
    border-bottom: 1px solid rgba(255,182,18,0.2);
    padding: 3rem 2rem;
    position: relative;
    z-index: 10;
}

.stat-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item {
    border-right: 1px solid rgba(112,128,144,0.2);
}

.stat-item:last-child {
    border-right: none;
}

.stat-value {
    font-size: 2.5rem;
    color: var(--industrial-gold);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--aggregate-gray);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Methodology Section */
.methodology {
    padding: 8rem 2rem;
    background-color: var(--cured-asphalt);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.methodology-header {
    text-align: center;
    margin-bottom: 5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-kicker {
    color: var(--industrial-gold);
    font-size: 1.2rem;
    display: block;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.section-description {
    color: var(--aggregate-gray);
    font-size: 1.2rem;
}

.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.grid-item {
    background: #151515;
    padding: 3rem 2rem;
    border-top: 4px solid var(--aggregate-gray);
    transition: var(--transition-smooth);
}

.grid-item:hover {
    border-top-color: var(--industrial-gold);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.item-icon {
    color: var(--industrial-gold);
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
}

.item-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.item-text {
    color: var(--aggregate-gray);
}

/* CTA Section */
.cta {
    padding: 8rem 2rem;
    background: linear-gradient(135deg, var(--cured-asphalt) 0%, #151515 100%);
    position: relative;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.cta-container {
    max-width: 800px;
    text-align: center;
}

.cta-title {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.cta-text {
    color: var(--aggregate-gray);
    font-size: 1.2rem;
    margin-bottom: 3rem;
}

.cta-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group input {
    width: 100%;
    background-color: transparent;
    border: 1px solid var(--aggregate-gray);
    padding: 1.2rem;
    color: var(--white);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.input-group input:focus {
    outline: none;
    border-color: var(--industrial-gold);
    box-shadow: inset 4px 0 0 var(--industrial-gold);
}

.form-submit {
    width: 100%;
    margin-top: 1rem;
}

/* Footer */
.footer {
    background-color: #0a0a0a;
    padding: 3rem 2rem;
    border-top: 2px solid var(--industrial-gold);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links p {
    color: var(--aggregate-gray);
    font-size: 0.9rem;
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero-title {
        font-size: 3rem;
    }
    .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(112,128,144,0.2);
        padding-bottom: 2rem;
    }
    .stat-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }
}