/* ============================================================
   resar.one — Styles
   Wabi-sabi aesthetic, ma-negative-space, gold-black luxury
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    --void-black: #0A0A0A;
    --reasoning-gold: #C9A84C;
    --aged-parchment: #E8DFD0;
    --weathered-bronze: #8B7355;
    --wabi-gray: #4A4540;
    --patina-green: #6B7B60;
    --warm-charcoal: #2A2520;

    --font-headline: 'Libre Baskerville', Georgia, serif;
    --font-body: 'Source Serif 4', 'Source Serif Pro', Georgia, serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background-color: var(--void-black);
    color: var(--aged-parchment);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(16px, 1.5vw, 18px);
    line-height: 1.85;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- SVG Filters (hidden) --- */
.svg-filters {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* --- Noise Overlay --- */
.noise-overlay {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 1;
    opacity: 0.4;
}

/* ============================================================
   THE THRESHOLD
   ============================================================ */
.threshold {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--void-black);
    overflow: hidden;
}

/* Gold geometric frame */
.gold-frame {
    position: absolute;
    width: min(85vw, 800px);
    height: auto;
    z-index: 2;
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform 0.15s ease-out;
}

.frame-stroke {
    stroke-dasharray: 2400;
    stroke-dashoffset: 2400;
    animation: drawFrame 1.5s ease-out 0.3s forwards;
}

@keyframes drawFrame {
    to {
        stroke-dashoffset: 0;
    }
}

/* Wordmark */
.wordmark {
    position: relative;
    z-index: 3;
    text-align: center;
    opacity: 0;
    transform: scale(0.98);
    animation: fadeInWordmark 0.8s ease-out 1.2s forwards;
}

@keyframes fadeInWordmark {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.wordmark-text {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(42px, 8vw, 96px);
    letter-spacing: -0.02em;
    color: var(--aged-parchment);
    line-height: 1.1;
}

.wordmark-subtitle {
    display: block;
    margin-top: 16px;
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 13px;
    color: var(--reasoning-gold);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* Collage fragments */
.collage-fragment {
    position: absolute;
    z-index: 4;
    padding: 10px 18px;
    background-color: var(--aged-parchment);
    color: var(--void-black);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    opacity: 0;
    transform: translateX(var(--slide-from, -60px));
    animation: slideInFragment 0.6s ease-out forwards;
    animation-delay: var(--delay, 1.8s);
}

.fragment-text {
    display: block;
    white-space: nowrap;
}

/* Torn-paper clip-paths */
.fragment-1 {
    top: 12%;
    left: -5%;
    --slide-from: -60px;
    --delay: 1.8s;
    clip-path: polygon(3% 0%, 98% 2%, 100% 45%, 97% 100%, 2% 97%, 0% 52%);
    transform: rotate(-2deg);
}

.fragment-2 {
    bottom: 18%;
    right: -3%;
    --slide-from: 60px;
    --delay: 2.0s;
    clip-path: polygon(0% 5%, 95% 0%, 100% 48%, 98% 100%, 4% 95%, 1% 50%);
    transform: rotate(1.5deg);
}

.fragment-3 {
    top: 25%;
    right: 5%;
    --slide-from: 60px;
    --delay: 2.2s;
    clip-path: polygon(2% 0%, 100% 3%, 97% 100%, 0% 98%);
    transform: rotate(-1deg);
    background-color: var(--weathered-bronze);
    color: var(--aged-parchment);
}

.fragment-4 {
    bottom: 10%;
    left: 3%;
    --slide-from: -60px;
    --delay: 2.4s;
    clip-path: polygon(0% 0%, 97% 4%, 100% 100%, 3% 96%);
    transform: rotate(2deg);
}

.fragment-5 {
    top: 65%;
    right: 12%;
    --slide-from: 60px;
    --delay: 2.6s;
    clip-path: polygon(1% 3%, 100% 0%, 98% 97%, 0% 100%);
    transform: rotate(-0.5deg);
    background-color: var(--patina-green);
    color: var(--aged-parchment);
}

@keyframes slideInFragment {
    to {
        opacity: 0.85;
        transform: translateX(0) rotate(var(--final-rotate, 0deg));
    }
}

.fragment-1 { --final-rotate: -2deg; }
.fragment-2 { --final-rotate: 1.5deg; }
.fragment-3 { --final-rotate: -1deg; }
.fragment-4 { --final-rotate: 2deg; }
.fragment-5 { --final-rotate: -0.5deg; }

/* ============================================================
   REASONING CHAMBERS
   ============================================================ */
.reasoning-chamber {
    position: relative;
    margin-block: clamp(120px, 15vh, 200px);
    padding: 60px 40px;
    overflow: hidden;
}

.chamber-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

/* Alternating alignment */
.chamber-left .chamber-content {
    margin-left: clamp(40px, 10vw, 200px);
    margin-right: auto;
}

.chamber-right .chamber-content {
    margin-left: auto;
    margin-right: clamp(40px, 10vw, 200px);
}

/* Gold accent lines */
.gold-accent-line {
    position: absolute;
    background-color: var(--reasoning-gold);
    opacity: 0;
    transition: opacity 0.8s ease;
}

.line-left {
    top: 0;
    left: -40px;
    width: 1px;
    height: 100%;
}

.line-right {
    top: 0;
    right: -40px;
    width: 1px;
    height: 100%;
}

.gold-accent-line.visible {
    opacity: 1;
}

/* Chamber labels */
.chamber-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 400;
    color: var(--reasoning-gold);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

/* Chamber headings */
.chamber-heading {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(32px, 5vw, 72px);
    letter-spacing: -0.02em;
    color: var(--aged-parchment);
    line-height: 1.15;
    margin-bottom: 32px;
}

.chamber-heading em {
    font-style: italic;
    color: var(--reasoning-gold);
}

/* Chamber body text */
.chamber-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(16px, 1.5vw, 18px);
    line-height: 1.85;
    color: var(--aged-parchment);
    margin-bottom: 24px;
    opacity: 0.9;
}

.chamber-body em {
    font-style: italic;
    font-weight: 600;
    color: var(--reasoning-gold);
}

/* Boundary collage fragments */
.fragment-boundary {
    position: absolute;
    z-index: 3;
    padding: 8px 14px;
    font-size: 10px;
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fragment-boundary.visible {
    opacity: 0.7;
}

.fragment-b1 {
    bottom: -30px;
    right: 10%;
    clip-path: polygon(0% 0%, 96% 3%, 100% 100%, 4% 97%);
    transform: rotate(1deg) translateY(20px);
}

.fragment-b1.visible {
    transform: rotate(1deg) translateY(0);
}

.fragment-b2 {
    bottom: -25px;
    left: 8%;
    clip-path: polygon(2% 0%, 100% 2%, 97% 100%, 0% 98%);
    background-color: var(--patina-green);
    color: var(--aged-parchment);
    transform: rotate(-1.5deg) translateY(20px);
}

.fragment-b2.visible {
    transform: rotate(-1.5deg) translateY(0);
}

.fragment-b3 {
    bottom: -35px;
    right: 15%;
    clip-path: polygon(1% 2%, 98% 0%, 100% 98%, 3% 100%);
    background-color: var(--weathered-bronze);
    color: var(--aged-parchment);
    transform: rotate(0.5deg) translateY(20px);
}

.fragment-b3.visible {
    transform: rotate(0.5deg) translateY(0);
}

/* ============================================================
   PROOF GALLERY
   ============================================================ */
.proof-gallery {
    position: relative;
    margin-block: clamp(120px, 15vh, 200px);
    padding: 80px 40px;
    overflow: hidden;
}

.gallery-header {
    max-width: 600px;
    margin: 0 auto clamp(60px, 8vh, 120px) auto;
    text-align: center;
}

.gallery-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: clamp(30px, 4vw, 60px);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.proof-card {
    position: relative;
    background-color: var(--warm-charcoal);
    border: 1px solid var(--wabi-gray);
    padding: 0;
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform 0.15s ease-out, border-color 0.4s ease;
    cursor: default;
}

.proof-card:hover {
    border-color: var(--reasoning-gold);
}

.card-inner {
    position: relative;
    z-index: 2;
    padding: clamp(30px, 4vw, 50px);
}

.card-step {
    display: block;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 400;
    color: var(--reasoning-gold);
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}

.card-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(22px, 3vw, 30px);
    letter-spacing: -0.02em;
    color: var(--aged-parchment);
    line-height: 1.2;
    margin-bottom: 16px;
}

.card-text {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(14px, 1.3vw, 16px);
    line-height: 1.75;
    color: var(--aged-parchment);
    opacity: 0.85;
    margin-bottom: 24px;
}

.card-notation {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 400;
    color: var(--weathered-bronze);
    padding-top: 16px;
    border-top: 1px solid var(--wabi-gray);
}

/* ============================================================
   FOUNDATION FOOTER
   ============================================================ */
.foundation {
    position: relative;
    margin-top: clamp(120px, 15vh, 200px);
    padding: clamp(80px, 12vh, 160px) 40px;
    overflow: hidden;
}

.footer-border {
    position: absolute;
    top: 0;
    left: 40px;
    right: 40px;
    height: 1px;
    background-color: var(--reasoning-gold);
}

.footer-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.footer-wordmark {
    display: block;
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: clamp(24px, 4vw, 40px);
    letter-spacing: -0.02em;
    color: var(--aged-parchment);
    margin-bottom: 16px;
}

.footer-note {
    display: block;
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(14px, 1.3vw, 16px);
    color: var(--weathered-bronze);
    font-style: italic;
    margin-bottom: 40px;
}

.footer-accent-lines {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.footer-line {
    display: block;
    width: 40px;
    height: 1px;
    background-color: var(--reasoning-gold);
    opacity: 0.5;
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.chamber-content,
.gallery-header,
.proof-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.chamber-content.revealed,
.gallery-header.revealed,
.proof-card.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger proof cards */
.proof-card:nth-child(2) { transition-delay: 0.1s; }
.proof-card:nth-child(3) { transition-delay: 0.2s; }
.proof-card:nth-child(4) { transition-delay: 0.3s; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .chamber-left .chamber-content,
    .chamber-right .chamber-content {
        margin-left: 24px;
        margin-right: 24px;
    }

    .reasoning-chamber {
        padding: 40px 20px;
    }

    .proof-gallery {
        padding: 60px 20px;
    }

    .gallery-cards {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 0;
    }

    .foundation {
        padding: 60px 20px;
    }

    .footer-border {
        left: 20px;
        right: 20px;
    }

    .collage-fragment {
        display: none;
    }

    .gold-frame {
        width: 90vw;
    }
}

@media (max-width: 480px) {
    .wordmark-text {
        font-size: clamp(32px, 10vw, 52px);
    }
}