/* ===========================================================
   monopole.design — calm cyberpunk observation deck
   Palette: Sunset-Warm
   #1c1410 Burnt Umber Black · #2e2118 Roast · #f7ede0 Warm Paper
   #ec7a3c Phosphor Amber · #d94f2e Ember Red · #f2b56b Honey Glow
   #6f4a3a Driftwood
   Fonts: Cormorant Garamond (display) · Spectral (body) · JetBrains Mono (data)
   =========================================================== */

:root {
    --umber:    #1c1410;
    --roast:    #2e2118;
    --paper:    #f7ede0;
    --amber:    #ec7a3c;
    --ember:    #d94f2e;
    --honey:    #f2b56b;
    --drift:    #6f4a3a;

    --rail-w: 76px;
    --ease-warm: cubic-bezier(0.16, 1, 0.3, 1);
    --sky: linear-gradient(160deg, #f2b56b 0%, #ec7a3c 38%, #d94f2e 72%, #1c1410 100%);
    --glow-warm: 0 0 40px rgba(236, 122, 60, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
    background: var(--umber);
    color: var(--paper);
    font-family: "Spectral", Georgia, serif;
    font-size: 18px;
    line-height: 1.7;
    overflow-x: hidden;
    cursor: none;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

h1, h2, h3 {
    font-family: "Cormorant Garamond", "Times New Roman", serif;
    font-weight: 300;
    line-height: 1.04;
    letter-spacing: -0.005em;
}

em { font-style: italic; }

/* ===================== Grain overlay ===================== */
.grain {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9000;
    opacity: 0.085;
    mix-blend-mode: overlay;
}
.grain rect { width: 100%; height: 100%; }

/* ===================== Custom cursor ===================== */
.cursor {
    position: fixed;
    top: 0; left: 0;
    width: 0; height: 0;
    pointer-events: none;
    z-index: 9500;
    transform: translate3d(-100px, -100px, 0);
    will-change: transform;
}
.cursor-ring {
    position: absolute;
    left: -13px; top: -13px;
    width: 26px; height: 26px;
    border: 1px solid var(--amber);
    border-radius: 50%;
    box-shadow: 0 0 12px rgba(236, 122, 60, 0.4);
    transition: width 0.3s var(--ease-warm), height 0.3s var(--ease-warm),
                left 0.3s var(--ease-warm), top 0.3s var(--ease-warm),
                border-color 0.3s var(--ease-warm);
}
.cursor-ring::before, .cursor-ring::after {
    content: "";
    position: absolute;
    background: var(--amber);
}
.cursor-ring::before { left: 50%; top: -6px; width: 1px; height: 5px; transform: translateX(-50%); }
.cursor-ring::after  { left: 50%; bottom: -6px; width: 1px; height: 5px; transform: translateX(-50%); }
.cursor-dot {
    position: absolute;
    left: -1.5px; top: -1.5px;
    width: 3px; height: 3px;
    background: var(--paper);
    border-radius: 50%;
}
.cursor.hot .cursor-ring {
    left: -20px; top: -20px;
    width: 40px; height: 40px;
    border-color: var(--ember);
}

/* faint grain trail dots left by cursor */
.trail-dot {
    position: fixed;
    width: 4px; height: 4px;
    border-radius: 50%;
    background: rgba(236, 122, 60, 0.5);
    pointer-events: none;
    z-index: 9400;
    transform: translate(-50%, -50%);
    transition: opacity 0.45s linear, transform 0.45s linear;
}

/* ===================== Left coordinate rail ===================== */
.rail {
    position: fixed;
    top: 0; left: 0;
    width: var(--rail-w);
    height: 100vh;
    z-index: 8000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 22px 0;
    border-right: 1px solid rgba(111, 74, 58, 0.4);
    background: linear-gradient(180deg, rgba(28,20,16,0.0), rgba(28,20,16,0.55) 30%, rgba(28,20,16,0.55) 70%, rgba(28,20,16,0.0));
    backdrop-filter: none;
}
.rail-mark {
    font-family: "JetBrains Mono", monospace;
    color: var(--drift);
    font-size: 12px;
    line-height: 1;
}
.rail-coords {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-family: "JetBrains Mono", monospace;
    font-size: 10.5px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--drift);
    white-space: nowrap;
    user-select: none;
}
.rail-filament {
    position: relative;
    flex: 1 1 auto;
    width: 2px;
    margin: 18px 0;
    background: rgba(111, 74, 58, 0.35);
    border-radius: 1px;
    overflow: hidden;
}
.rail-filament-fill {
    position: absolute;
    left: 0; top: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(180deg, #6f4a3a 0%, #ec7a3c 70%, #d94f2e 100%);
    box-shadow: 0 0 10px rgba(236, 122, 60, 0.55);
    transition: height 0.18s linear;
}
.rail-meter {
    display: flex;
    flex-direction: column-reverse;
    gap: 2px;
}
.rail-meter span {
    display: block;
    width: 14px;
    height: 3px;
    background: rgba(111, 74, 58, 0.4);
    border-radius: 1px;
    transition: background 0.25s var(--ease-warm), box-shadow 0.25s var(--ease-warm);
}
.rail-meter span.on {
    background: var(--amber);
    box-shadow: 0 0 6px rgba(236, 122, 60, 0.6);
}

/* ===================== Stage / layout ===================== */
.stage {
    margin-left: var(--rail-w);
}

.region {
    position: relative;
    padding: 0 clamp(20px, 6vw, 96px);
}

/* ----- Region 01 hero (full-bleed) ----- */
.region-hero {
    height: 100vh;
    min-height: 620px;
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}
.hero-canvas {
    position: absolute;
    inset: 0;
    background: var(--sky);
    transform-origin: center center;
    z-index: 0;
}
.field-svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}
.field-line {
    fill: none;
    stroke: url(#lineFade);
    stroke-width: 1;
    stroke-linecap: round;
}
.pole-core { filter: drop-shadow(0 0 14px rgba(247, 237, 224, 0.9)); }
.pole-halo { animation: poleHalo 6s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes poleHalo {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 0.25; transform: scale(2.6); }
}

.hero-overlay {
    position: relative;
    z-index: 2;
    padding: 0 clamp(24px, 7vw, 110px) clamp(46px, 9vh, 120px);
    max-width: 1100px;
}
.hero-eyebrow {
    font-family: "JetBrains Mono", monospace;
    font-size: 11.5px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: rgba(247, 237, 224, 0.7);
    margin-bottom: 1.4rem;
}
.hero-title {
    font-size: clamp(2.8rem, 9.5vw, 7rem);
    font-weight: 300;
    color: var(--paper);
    text-shadow: 0 2px 30px rgba(28, 20, 16, 0.4);
    margin-bottom: 1.1rem;
}
.hero-title .hero-em {
    color: rgba(247, 237, 224, 0.62);
    font-weight: 300;
}
.hero-tagline {
    font-family: "JetBrains Mono", monospace;
    font-size: 12.5px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: rgba(247, 237, 224, 0.82);
}
.scroll-cue {
    position: absolute;
    right: clamp(20px, 5vw, 70px);
    bottom: clamp(28px, 6vh, 60px);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(247, 237, 224, 0.7);
    writing-mode: vertical-rl;
}
.scroll-cue-line {
    width: 1px;
    height: 46px;
    background: linear-gradient(180deg, rgba(247,237,224,0.7), rgba(247,237,224,0));
    animation: cueDrop 2.2s var(--ease-warm) infinite;
}
@keyframes cueDrop {
    0% { transform: scaleY(0); transform-origin: top; opacity: 0; }
    35% { opacity: 1; }
    70% { transform: scaleY(1); transform-origin: top; opacity: 1; }
    100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* ----- Region heads ----- */
.region-head {
    max-width: 880px;
    padding-top: clamp(80px, 14vh, 160px);
    padding-bottom: clamp(28px, 5vh, 60px);
}
.region-tag {
    display: inline-block;
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--amber);
    margin-bottom: 1.1rem;
}
.region-title {
    font-size: clamp(2.4rem, 6vw, 5rem);
    font-weight: 300;
    color: var(--paper);
    margin-bottom: 0.7rem;
}
.region-title em { color: var(--honey); }
.region-sub {
    color: var(--drift);
    max-width: 46ch;
    font-size: 1.05rem;
}
.region-head-light .region-tag { color: var(--ember); }

/* ----- decorative field-line divider ----- */
.divider {
    width: 100%;
    max-width: 900px;
    margin: 0 auto clamp(32px, 6vh, 64px);
    opacity: 0.9;
}
.divider svg { width: 100%; height: 40px; display: block; }

/* ===================== Masonry ===================== */
.masonry {
    column-count: 4;
    column-gap: clamp(14px, 1.8vw, 26px);
    padding-bottom: clamp(60px, 12vh, 130px);
}
.masonry-notes { column-count: 3; }
.masonry-small { column-count: 5; }

.tile {
    position: relative;
    break-inside: avoid;
    margin: 0 0 clamp(14px, 1.8vw, 26px);
    background: var(--roast);
    border: 1px solid var(--drift);
    border-radius: 3px;
    padding: 28px 26px 30px;
    color: var(--paper);
    overflow: hidden;
    transform: translateY(24px);
    opacity: 0;
    transition: transform 0.7s var(--ease-warm), opacity 0.7s var(--ease-warm),
                box-shadow 0.45s var(--ease-warm), border-color 0.45s var(--ease-warm);
}
.tile.in {
    transform: translateY(0);
    opacity: 1;
}
.tile.lift {
    transform: translateY(-4px);
    border-color: var(--amber);
    box-shadow: var(--glow-warm);
}
/* faint scanlines over dark tiles */
.tile:not(.tile-paper)::after {
    content: "";
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(0deg, rgba(247,237,224,0.04) 0 1px, transparent 1px 4px);
    pointer-events: none;
}

.tile-tall { padding-bottom: clamp(40px, 6vh, 70px); }

/* corner registration marks (viewfinder) */
.reg {
    position: absolute;
    width: 12px; height: 12px;
    pointer-events: none;
    opacity: 0.7;
}
.reg::before, .reg::after {
    content: "";
    position: absolute;
    background: var(--amber);
}
.reg::before { width: 12px; height: 1px; }
.reg::after  { width: 1px; height: 12px; }
.reg.tl { left: 8px; top: 8px; }
.reg.tl::before { left: 0; top: 0; } .reg.tl::after { left: 0; top: 0; }
.reg.tr { right: 8px; top: 8px; }
.reg.tr::before { right: 0; top: 0; } .reg.tr::after { right: 0; top: 0; }
.reg.bl { left: 8px; bottom: 8px; }
.reg.bl::before { left: 0; bottom: 0; } .reg.bl::after { left: 0; bottom: 0; }
.reg.br { right: 8px; bottom: 8px; }
.reg.br::before { right: 0; bottom: 0; } .reg.br::after { right: 0; bottom: 0; }
.tile-paper .reg { opacity: 0.55; }
.tile-paper .reg::before, .tile-paper .reg::after { background: var(--ember); }

.tile-label {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 10.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--drift);
    margin-bottom: 1.2rem;
}
.tile-label-dark { color: var(--drift); }

.tile-h {
    font-family: "Cormorant Garamond", serif;
    font-weight: 400;
    font-size: clamp(1.6rem, 2.4vw, 2.4rem);
    line-height: 1.08;
    color: var(--paper);
    margin-bottom: 0.7rem;
}
.tile-h em { color: var(--honey); }
.tile-p {
    color: rgba(247, 237, 224, 0.78);
    font-size: 1rem;
    line-height: 1.65;
}
.tile-p + .tile-p { margin-top: 0.85rem; }
.tile-p-dim { color: var(--drift); font-style: italic; }

/* monospace tiles */
.tile-mono { background: #241a14; }
.tile-code {
    font-family: "JetBrains Mono", monospace;
    font-size: 12px;
    line-height: 1.7;
    letter-spacing: 0.02em;
    color: var(--honey);
    white-space: pre;
    text-shadow: 0 0 8px rgba(242, 181, 107, 0.25);
}

/* art / figure tiles */
.tile-art { text-align: center; }
.tile-figure {
    width: 100%;
    max-width: 240px;
    margin: 0.4rem auto 0.9rem;
    display: block;
    filter: drop-shadow(0 0 14px rgba(236, 122, 60, 0.3));
}
.tile-figure-wide {
    width: 100%;
    margin: 0.6rem 0 0.9rem;
    display: block;
    filter: drop-shadow(0 0 14px rgba(236, 122, 60, 0.25));
}
.tile-figure-small {
    width: 100%;
    max-width: 120px;
    margin: 0.3rem auto 0.6rem;
    display: block;
    filter: drop-shadow(0 0 10px rgba(236, 122, 60, 0.3));
}
.tile-cap {
    display: block;
    font-family: "JetBrains Mono", monospace;
    font-size: 9.5px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--drift);
}

/* hero docking target tile */
.tile-dock {
    position: relative;
    width: 100%;
    height: 0;
    margin-bottom: 1.1rem;
}

/* ----- Field-line arc connector (cursor magnetization) ----- */
.field-arc {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 7500;
}
.field-arc path {
    fill: none;
    stroke: var(--amber);
    stroke-width: 1;
    filter: drop-shadow(0 0 6px rgba(236, 122, 60, 0.6));
}

/* ===================== Region 03 — Field Notes (warm paper) ===================== */
.region-notes {
    background: linear-gradient(180deg, var(--umber) 0%, #2a1d15 16%, var(--paper) 40%, var(--paper) 88%, #2a1d15 100%);
}
.region-notes .region-title { color: var(--umber); }
.region-notes .region-title em { color: var(--ember); }
.tile-paper {
    background: var(--paper);
    border: 1px solid rgba(111, 74, 58, 0.4);
    color: var(--umber);
}
.tile-paper .tile-label { color: var(--drift); }
.tile-h-paper {
    font-family: "Cormorant Garamond", serif;
    font-weight: 400;
    font-size: clamp(1.7rem, 2.6vw, 2.5rem);
    line-height: 1.08;
    color: var(--umber);
    margin-bottom: 0.8rem;
}
.tile-p-paper {
    color: #3a2a20;
    font-size: 1.02rem;
    line-height: 1.72;
}
.tile-p-paper + .tile-p-paper { margin-top: 0.95rem; }
.tile-p-paper em { color: var(--ember); }

/* ===================== Region 04 — The Coordinate ===================== */
.region-coordinate {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: var(--umber);
    padding: 0 clamp(24px, 10vw, 160px);
}
.coordinate-line {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-weight: 300;
    font-size: clamp(1.4rem, 3vw, 1.85rem);
    line-height: 1.5;
    color: var(--paper);
    max-width: 26ch;
}
.coordinate-cursor {
    display: inline-block;
    width: 0.55ch;
    height: 1.05em;
    margin-left: 0.3ch;
    background: var(--amber);
    vertical-align: -0.12em;
    box-shadow: 0 0 12px rgba(236, 122, 60, 0.6);
    animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

/* ===================== Region 05 — Resonance ===================== */
.region-resonance { background: var(--umber); }
.tile-small {
    padding: 22px 20px 24px;
    min-height: 130px;
    display: flex;
    flex-direction: column;
}
.tile-small .tile-label { margin-bottom: 0.9rem; }
.tile-link {
    font-family: "Cormorant Garamond", serif;
    font-size: 1.4rem;
    color: var(--honey);
    text-decoration: none;
    line-height: 1.2;
    transition: color 0.3s var(--ease-warm);
}
.tile-link:hover { color: var(--amber); text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
.tile-credit {
    font-family: "JetBrains Mono", monospace;
    font-size: 10.5px;
    letter-spacing: 0.06em;
    line-height: 1.7;
    color: var(--drift);
    text-transform: uppercase;
}

/* ===================== Region 06 — Footer ===================== */
.region-footer {
    display: flex;
    align-items: center;
    gap: clamp(14px, 3vw, 40px);
    flex-wrap: wrap;
    padding: clamp(26px, 5vh, 50px) clamp(20px, 6vw, 96px);
    border-top: 1px solid rgba(111, 74, 58, 0.5);
    background: linear-gradient(180deg, #2a1d15 0%, var(--umber) 100%);
}
.footer-mark {
    font-family: "JetBrains Mono", monospace;
    color: var(--drift);
    font-size: 13px;
}
.footer-coords {
    font-family: "JetBrains Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--amber);
}
.footer-name {
    font-family: "Cormorant Garamond", serif;
    font-style: italic;
    font-size: 1.15rem;
    color: var(--drift);
    margin-left: auto;
}

/* ===================== Click ripple layer ===================== */
.ripple-layer {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9300;
}
.ripple {
    position: absolute;
    border: 1px solid var(--amber);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0.8;
    box-shadow: 0 0 12px rgba(236, 122, 60, 0.4);
    animation: rippleOut 0.9s var(--ease-warm) forwards;
}
@keyframes rippleOut {
    to { transform: translate(-50%, -50%) scale(1); opacity: 0; }
}

/* ===================== Responsive ===================== */
@media (max-width: 1200px) {
    .masonry { column-count: 3; }
    .masonry-small { column-count: 4; }
}
@media (max-width: 900px) {
    body { cursor: auto; }
    .cursor, .trail-dot, .field-arc { display: none; }
    .rail { width: 52px; }
    :root { --rail-w: 52px; }
    .rail-coords { font-size: 9px; letter-spacing: 0.1em; }
    .masonry { column-count: 2; }
    .masonry-notes { column-count: 2; }
    .masonry-small { column-count: 2; }
}
@media (max-width: 560px) {
    body { font-size: 16px; }
    .masonry, .masonry-notes, .masonry-small { column-count: 1; }
    .rail { display: none; }
    :root { --rail-w: 0px; }
    .stage { margin-left: 0; padding: 0 18px; }
    .region { padding-left: 18px; padding-right: 18px; }
    .region-hero { padding: 0; }
    .footer-name { margin-left: 0; }
}

/* ===================== Reduced motion ===================== */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .grain { animation: none; }
    .pole-halo, .scroll-cue-line, .coordinate-cursor { animation: none; }
    .field-line { animation: none !important; }
    .tile { transition: opacity 0.3s linear; transform: none; }
    .tile.in { transform: none; }
}