/* conc.quest - Warm Brutalist Concrete Architecture */

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

:root {
    --limestone: #E8DFD0;
    --deep-aggregate: #1A1510;
    --burnt-umber: #2C2416;
    --sandstone: #3D3229;
    --kiln-amber: #C4883A;
    --expansion: #8B7D6B;
    --moss: #4A5E3A;
    --wall-interior: #0D0A06;
    --reversed: #D4C4A8;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Newsreader', serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.75;
    color: var(--sandstone);
    background: var(--limestone);
    overflow-x: hidden;
}

.noise-defs { position: absolute; }

/* Concrete texture */
.concrete-texture {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background:
        repeating-conic-gradient(rgba(139,125,107,0.03) 0%, transparent 0.5%),
        repeating-conic-gradient(rgba(61,50,41,0.02) 25%, transparent 25.5%);
    pointer-events: none;
    z-index: 0;
}

.concrete-texture::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    filter: url(#concrete-noise);
    opacity: 0.04;
}

/* Navigation */
.nav-compass {
    position: fixed;
    top: 2rem;
    left: 2rem;
    z-index: 100;
    mix-blend-mode: multiply;
}

.compass-icon {
    color: var(--expansion);
    cursor: pointer;
    transition: transform 0.4s ease-in-out;
}

.nav-compass:hover .compass-icon {
    transform: rotate(45deg);
}

.nav-list {
    list-style: none;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
    margin-top: 0.8rem;
    pointer-events: none;
}

.nav-compass:hover .nav-list {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.nav-list a {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--expansion);
    text-decoration: none;
    text-transform: uppercase;
    display: block;
    padding: 0.3rem 0;
}

.nav-list a:hover { color: var(--kiln-amber); }

/* Slabs */
.slab {
    min-height: 100vh;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    overflow: hidden;
}

.slab-light { background: var(--limestone); color: var(--burnt-umber); }
.slab-mid { background: var(--expansion); color: var(--burnt-umber); }
.slab-dark { background: var(--deep-aggregate); color: var(--reversed); }
.slab-abyss { background: var(--wall-interior); color: var(--reversed); }
.slab-warm { background: var(--limestone); color: var(--burnt-umber); }

/* Marginalia */
.marginalia {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    color: var(--expansion);
    z-index: 2;
}

/* Carved text */
.carved-text {
    font-family: 'Archivo Black', sans-serif;
    font-size: clamp(3.5rem, 10vw, 9rem);
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--burnt-umber);
    text-shadow:
        1px 1px 0 var(--limestone),
        -1px -1px 0 var(--wall-interior),
        0 0 4px rgba(13, 10, 6, 0.3);
    z-index: 2;
    text-align: center;
}

.surface-line {
    font-family: 'Newsreader', serif;
    font-style: italic;
    font-size: clamp(1rem, 1.5vw, 1.3rem);
    color: var(--sandstone);
    margin-top: 2rem;
    z-index: 2;
    text-align: center;
}

.chevron-pulse {
    position: absolute;
    bottom: 3rem;
    animation: chevronPulse 3s ease-in-out infinite;
    z-index: 2;
}

@keyframes chevronPulse {
    0%, 100% { opacity: 0.4; transform: translateY(0); }
    50% { opacity: 0.8; transform: translateY(6px); }
}

.compass-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--expansion);
    opacity: 0.04;
    z-index: 1;
}

/* Apertures */
.aperture {
    position: relative;
    z-index: 2;
    box-shadow:
        inset 0 0 20px rgba(13, 10, 6, 0.4),
        inset 0 0 60px rgba(13, 10, 6, 0.2),
        inset 0 4px 12px rgba(13, 10, 6, 0.6);
    background: var(--limestone);
    padding: 3rem;
    transition: box-shadow 0.8s ease-in-out, transform 0.8s ease-in-out;
}

.aperture:hover {
    box-shadow:
        inset 0 0 10px rgba(13, 10, 6, 0.2),
        inset 0 0 30px rgba(13, 10, 6, 0.1),
        inset 0 2px 8px rgba(13, 10, 6, 0.3);
    transform: translateY(-2px);
}

.aperture-large {
    width: 60vw;
    max-width: 800px;
    min-height: 40vh;
    display: flex;
    align-items: center;
}

.aperture-light {
    position: absolute;
    top: 0; right: 0;
    width: 60%;
    height: 60%;
    background: radial-gradient(ellipse at 100% 0%, rgba(196, 136, 58, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.aperture-content p {
    margin-bottom: 1rem;
    color: var(--sandstone);
}

.aperture-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    max-width: 800px;
    z-index: 2;
}

.aperture-small {
    padding: 2rem;
    background: var(--deep-aggregate);
}

.aperture-small h3 {
    font-family: 'Archivo Black', sans-serif;
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--reversed);
    margin-bottom: 0.8rem;
}

.aperture-small p {
    color: var(--expansion);
    font-size: 0.95rem;
}

/* Arrow slits */
.arrow-slit {
    width: 70%;
    max-width: 600px;
    padding: 1.5rem 2rem;
    border-left: 2px solid var(--kiln-amber);
    margin-bottom: 3rem;
    z-index: 2;
}

.arrow-slit p {
    color: var(--reversed);
    opacity: 0.85;
}

.light-shaft {
    position: absolute;
    top: 10%;
    right: 20%;
    width: 100px;
    height: 80%;
    background: linear-gradient(180deg, rgba(196, 136, 58, 0.06) 0%, transparent 100%);
    transform: skewX(-15deg);
    pointer-events: none;
}

/* Moss lines */
.moss-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    z-index: 3;
}

.moss-sparse {
    background: linear-gradient(90deg, transparent 0%, var(--moss) 20%, transparent 25%, transparent 60%, var(--moss) 70%, transparent 80%);
    opacity: 0.4;
}

.moss-dense {
    height: 6px;
    bottom: 40%;
    background: linear-gradient(90deg, var(--moss) 5%, transparent 15%, var(--moss) 30%, transparent 40%, var(--moss) 55%, transparent 65%, var(--moss) 80%, transparent 90%);
    opacity: 0.3;
}

.moss-dense-2 {
    height: 4px;
    bottom: 60%;
    left: 10%;
    width: 80%;
    background: linear-gradient(90deg, transparent 0%, var(--moss) 15%, transparent 30%, var(--moss) 50%, transparent 70%, var(--moss) 85%, transparent 100%);
    opacity: 0.25;
}

/* Reclamation */
.reclamation-title {
    font-family: 'Archivo Black', sans-serif;
    font-size: clamp(2rem, 5vw, 4rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--kiln-amber);
    text-align: center;
    line-height: 1.2;
    z-index: 2;
    margin-bottom: 2rem;
}

.reclamation-text {
    max-width: 500px;
    text-align: center;
    z-index: 2;
    margin-bottom: 3rem;
}

.compass-final {
    color: var(--kiln-amber);
    z-index: 2;
    opacity: 0.8;
}

/* Slide reveal */
.slide-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}

.slide-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,*::before,*::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .slide-reveal { opacity: 1; transform: none; }
}

@media (max-width: 768px) {
    .aperture-large { width: 90vw; }
    .aperture-grid { grid-template-columns: 1fr; }
    .slab { padding: 3rem 1.5rem; }
    .arrow-slit { width: 90%; }
}