/* ========================================
   XT0X — Industrial Steampunk
   Dark, mechanical, warm copper/brass
   ======================================== */

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

:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-surface: #2a2a2a;
    --color-accent: #b87333;
    --color-accent-secondary: #c5a059;
    --color-accent-dark: #8b4513;
    --color-accent-light: #d4a574;
    --color-text: #f0e6d0;
    --color-text-secondary: #a09080;
    --font-display: 'Anton', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition-mechanical: 300ms cubic-bezier(0.6, 0, 0.4, 1);
    --transition-smooth: 250ms ease;
    --transition-hero: 2000ms ease;
    --glow-accent: 0 0 20px rgba(184, 115, 51, 0.3);
    --glow-strong: 0 0 40px rgba(184, 115, 51, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
    min-height: 100vh;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-mechanical);
}

a:hover {
    color: var(--color-accent-light);
}

/* --- Overlays --- */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9998;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
}

.scanline-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9997;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
}

.vignette {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9996;
    background: radial-gradient(ellipse at center, transparent 60%, rgba(0,0,0,0.6) 100%);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 1000;
}

.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transition: all var(--transition-mechanical);
    transform-origin: center;
}

.hamburger:hover span {
    background-color: var(--color-accent-light);
}

/* --- Menu Overlay --- */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translateX(-100%);
    transition: transform var(--transition-mechanical);
}

.menu-overlay.open {
    transform: translateX(0);
}

.menu-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: none;
    color: var(--color-accent);
    font-size: 3rem;
    cursor: pointer;
    transition: color var(--transition-mechanical);
    line-height: 1;
}

.menu-close:hover {
    color: var(--color-accent-light);
}

.menu-links {
    list-style: none;
    text-align: center;
}

.menu-links li {
    margin: 1.5rem 0;
    opacity: 0;
    transform: translateX(-30px);
    transition: all var(--transition-mechanical);
    transition-delay: calc(var(--i, 0) * 80ms);
}

.menu-overlay.open .menu-links li {
    opacity: 1;
    transform: translateX(0);
}

.menu-links li:nth-child(1) { --i: 1; }
.menu-links li:nth-child(2) { --i: 2; }
.menu-links li:nth-child(3) { --i: 3; }
.menu-links li:nth-child(4) { --i: 4; }
.menu-links li:nth-child(5) { --i: 5; }
.menu-links li:nth-child(6) { --i: 6; }
.menu-links li:nth-child(7) { --i: 7; }

.menu-link {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    transition: all var(--transition-mechanical);
    position: relative;
}

.menu-link:hover,
.menu-link.active {
    color: var(--color-accent);
    letter-spacing: 0.3em;
}

.menu-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-mechanical);
}

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

/* --- Hero Section --- */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

#three-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(5rem, 18vw, 14rem);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    line-height: 0.85;
    animation: heroGlow 3s ease-in-out infinite alternate;
    user-select: none;
    -webkit-text-stroke: 0.5px rgba(197, 160, 89, 0.25);
    background: linear-gradient(180deg, #f0e6d0, #b87333 50%, #8b4513);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 3px 3px 0px #1a0f05, 0 0 20px rgba(184,115,51,0.3);
    transform: perspective(800px) rotateX(3deg);
    filter: drop-shadow(0 0 15px rgba(184,115,51,0.3)) brightness(1.1);
    display: inline-block;
}

@keyframes heroGlow {
    0% {
        filter: drop-shadow(0 0 10px rgba(184,115,51,0.3)) brightness(1);
    }
    50% {
        filter: drop-shadow(0 0 25px rgba(184,115,51,0.5)) brightness(1.15);
    }
    100% {
        filter: drop-shadow(0 0 40px rgba(184,115,51,0.6)) brightness(1.2);
    }
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 2vw, 1.4rem);
    color: var(--color-text-secondary);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    margin-top: 1rem;
    font-weight: 300;
}

.hero-cta {
    margin-top: 3rem;
}

.enter-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-accent);
    font-family: var(--font-body);
    font-size: 0.9rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    transition: all var(--transition-mechanical);
    cursor: pointer;
}

.enter-link:hover {
    color: var(--color-accent-light);
    gap: 1rem;
}

.arrow-down {
    animation: arrowBounce 2s ease-in-out infinite;
}

@keyframes arrowBounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(5px);
    }
}

/* --- Below Fold --- */
.below-fold {
    padding: 6rem 2rem;
    background-color: var(--color-bg-secondary);
    border-top: 1px solid rgba(184, 115, 51, 0.1);
}

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

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

.fold-item {
    padding: 2rem;
    border: 1px solid rgba(184, 115, 51, 0.15);
    transition: all var(--transition-mechanical);
}

.fold-item:hover {
    border-color: var(--color-accent);
    background: rgba(184, 115, 51, 0.05);
}

.fold-item h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.fold-item p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 300;
}

/* --- Footer --- */
.footer {
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid rgba(184, 115, 51, 0.1);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.social-links a {
    font-family: var(--font-display);
    font-size: 0.8rem;
    letter-spacing: 0.2em;
    color: var(--color-text-secondary);
    transition: all var(--transition-mechanical);
}

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

.copyright {
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.1em;
}

/* --- Subpage Template --- */
.subpage {
    min-height: 100vh;
    padding: 8rem 2rem 4rem;
}

.subpage-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 5rem);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.subpage-content {
    max-width: 800px;
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-weight: 300;
}

.subpage-content p {
    margin-bottom: 1.5rem;
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-title {
        animation: none;
        text-shadow: var(--glow-accent);
    }
    
    .arrow-down {
        animation: none;
    }
    
    #three-canvas {
        display: none;
    }
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav {
        top: 1rem;
        left: 1rem;
    }
    
    .menu-link {
        font-size: 2rem;
    }
    
    .below-fold {
        padding: 3rem 1rem;
    }
    
    .fold-grid {
        grid-template-columns: 1fr;
    }
    
    .subpage {
        padding: 6rem 1rem 2rem;
    }
}