:root {
    --bg-color: #F8FAFC;
    --card-bg: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --copper-primary: #B87333;
    --copper-light: #FF8B4D;
    --copper-dark: #B8501B;
    --border-color: #E2E8F0;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.01);
    --shadow-lg: 0 20px 40px -5px rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    color: var(--text-primary);
}

.highlight {
    background: linear-gradient(135deg, var(--copper-primary), var(--copper-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.glass {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    transition: all 0.3s ease;
    background: transparent;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 5%;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border-color);
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.logo-full {
    height: 40px;
    width: auto;
    display: block;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--copper-primary), var(--copper-dark));
    color: white;
    box-shadow: 0 8px 20px rgba(184, 115, 51, 0.25);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 25px rgba(184, 115, 51, 0.35);
}

.cta-button.secondary {
    background: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.cta-button.secondary:hover {
    border-color: var(--copper-primary);
    color: var(--copper-primary);
}

.nav-cta {
    border: 2px solid var(--copper-primary);
    color: var(--copper-primary);
    padding: 0.6rem 1.5rem;
    border-radius: 30px;
    font-weight: 700;
}

.nav-cta:hover {
    background: var(--copper-primary);
    color: white;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 0 5%;
    overflow: hidden;
    background-color: white;
}

/* Hero: Layer 1 — Mine site photographs (stacked for zero lag) */
.hero-bg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.95;
}

.hero-photo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    opacity: 0;
    will-change: opacity;
}

.hero-photo.active {
    opacity: 1;
}

/* Hero: Layer 2 — Warm copper tint to unify photo with palette */
.hero-tint {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        160deg,
        rgba(255, 255, 255, 0.6) 0%,
        rgba(184, 115, 51, 0.08) 50%,
        rgba(184, 80, 27, 0.04) 100%
    );
    z-index: 1;
}

/* Hero: Layer 3 — Canvas animation overlay */
.hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

/* Hero: Layer 4 — Left fade for text readability (wide, seamless) */
.hero-fade {
    position: absolute;
    top: 0;
    left: 0;
    width: 65%;
    height: 100%;
    background: linear-gradient(
        to right,
        white 0%,
        white 45%,
        rgba(255, 255, 255, 0.92) 60%,
        rgba(255, 255, 255, 0.6) 75%,
        rgba(255, 255, 255, 0.15) 90%,
        transparent 100%
    );
    z-index: 3;
}

/* Hero: Top and bottom vignette for seamless edges */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(255,255,255, 0.7) 0%,
        transparent 18%,
        transparent 82%,
        rgba(248,250,252, 0.9) 100%
    );
    z-index: 4;
    pointer-events: none;
}

.hero-content {
    max-width: 650px;
    z-index: 10;
    position: relative;
}

.hero-label {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(184, 115, 51, 0.1);
    color: var(--copper-dark);
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

.hero h1 {
    font-size: 5rem;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    letter-spacing: -1.5px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 550px;
    font-weight: 400;
}

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

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.6;
    animation: bounce 2s infinite;
    z-index: 10;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--text-secondary);
    border-radius: 13px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--copper-primary);
    border-radius: 2px;
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 15px); opacity: 0; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

/* General Sections */
.section {
    padding: 8rem 5%;
}

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

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

.section-header h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto;
}

/* Split Section Layout */
.split-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.text-content h2 {
    font-size: 3rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.text-content p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.text-content .stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
}

.stat-item h4 {
    font-size: 2.5rem;
    color: var(--copper-primary);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 0.95rem;
    margin-bottom: 0;
}

.image-content {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.image-content img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 20px;
    transform: scale(1.02);
    transition: transform 0.5s ease;
}

.image-content:hover img {
    transform: scale(1.05);
}

/* Feature List */
.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    margin-bottom: 1.5rem;
    padding-left: 2.5rem;
    position: relative;
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: rgba(184, 115, 51, 0.1);
    color: var(--copper-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

/* Team Section */
.team-section {
    background-color: white;
}

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

.team-member {
    padding: 3rem;
    text-align: left;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.member-avatar {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--copper-light), var(--copper-primary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 15px rgba(184, 115, 51, 0.3);
}

.team-member h3 {
    font-size: 1.8rem;
    margin-bottom: 0.3rem;
}

.member-title {
    color: var(--copper-primary);
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.team-member p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--text-primary), #1e293b);
    color: white;
    text-align: center;
    padding: 6rem 5%;
    position: relative;
    overflow: hidden;
}

.cta-section h2 {
    color: white;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.cta-section p {
    font-size: 1.25rem;
    color: #cbd5e1;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Footer */
.footer {
    padding: 4rem 5% 2rem;
    background-color: white;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 1rem;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.footer-contact h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-contact a {
    color: var(--copper-dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.footer-contact a:hover {
    color: var(--copper-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Animations */
.fade-in { opacity: 0; transform: translateY(30px); transition: opacity 0.8s ease, transform 0.8s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

.fade-in-up { opacity: 0; transform: translateY(50px); transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }

.fade-in-left { opacity: 0; transform: translateX(-50px); transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.fade-in-left.visible { opacity: 1; transform: translateX(0); }

.fade-in-right { opacity: 0; transform: translateX(50px); transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.fade-in-right.visible { opacity: 1; transform: translateX(0); }

.delay-1 { transition-delay: 0.2s; }
.delay-2 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 968px) {
    .split-section { grid-template-columns: 1fr; gap: 3rem; }
    .image-content { order: -1; }
    
    /* Adapt layered hero for tablet/mobile */
    .hero-photo, .hero-tint, .hero-canvas { 
        width: 100%; 
        background-position: center top;
    }
    
    /* Stronger top-to-bottom fade so text is fully readable at the top */
    .hero-fade { 
        width: 100%; 
        background: linear-gradient(
            to bottom, 
            white 0%, 
            white 40%, 
            rgba(255,255,255,0.95) 55%, 
            rgba(255,255,255,0.6) 75%, 
            transparent 100%
        ); 
    }
    
    .hero-content {
        margin-top: -5vh; /* Push text up slightly on tablet */
    }
    
    .hero h1 { font-size: 3.8rem; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .navbar { padding: 1rem 5%; }
    
    .logo-full { height: 30px; }
    .nav-cta { padding: 0.5rem 1.2rem; font-size: 0.85rem; }
    
    .hero {
        align-items: flex-start;
        padding-top: 120px;
        min-height: 90vh; /* Prevents awkward stretching on tall mobile screens */
    }
    
    .hero-content {
        margin-top: 0;
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .hero h1 { font-size: 2.8rem; letter-spacing: -1px; margin-bottom: 1rem; }
    .hero p { font-size: 1.05rem; margin-bottom: 2rem; max-width: 100%; }
    
    .section { padding: 4rem 5%; }
    .section-header { margin-bottom: 3rem; }
    .section-header h2 { font-size: 2.2rem; }
    .section-header p { font-size: 1.05rem; }
    
    .text-content h2 { font-size: 2rem; text-align: center; }
    .text-content p { text-align: center; }
    
    .text-content .stats { grid-template-columns: 1fr; gap: 1.5rem; margin-top: 2.5rem; padding-top: 2.5rem; text-align: center; }
    .stat-item h4 { font-size: 2.2rem; }
    
    /* Center align the feature list */
    .feature-list { display: inline-block; text-align: left; margin-left: auto; margin-right: auto; }
    
    .team-grid { grid-template-columns: 1fr; gap: 2rem; }
    .team-member { padding: 2rem 1.5rem; text-align: center; }
    .member-avatar { margin: 0 auto 1.5rem; }
    
    .cta-section { padding: 4rem 5%; }
    .cta-section h2 { font-size: 2.2rem; }
    .cta-section p { font-size: 1.05rem; margin-bottom: 2rem; }
    
    .footer { padding: 3rem 5% 1.5rem; }
    .footer-content { flex-direction: column; text-align: center; gap: 1.5rem; margin-bottom: 2rem; }
    .footer-brand { display: flex; flex-direction: column; align-items: center; }
}