/* ============================================================
   gunsul.studio — horizontal construction atelier
   palette: coastal-blend | layout: horizontal scroll, 8 zones
   ============================================================ */

:root {
    --linen: #f5efe1;
    --indigo: #2c4a6e;
    --teal: #3a9da5;
    --sand: #d4a76a;
    --slate: #3d4955;
    --coral: #e0856e;
    --foam: #b8d8d0;

    --font-display: "Playfair Display", Georgia, serif;
    --font-hand: "Caveat", "Brush Script MT", cursive;
    --font-ui: "DM Sans", system-ui, sans-serif;
}

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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--linen);
    color: var(--indigo);
    font-family: var(--font-ui);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    cursor: grab;
}

body.dragging {
    cursor: grabbing;
}

/* ============================================================
   Canvas (horizontal track)
   ============================================================ */
.canvas {
    width: 800vw;
    height: 100vh;
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    position: relative;
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

.zone {
    width: 100vw;
    height: 100vh;
    flex: 0 0 100vw;
    position: relative;
    overflow: hidden;
    background: var(--linen);
}

/* ============================================================
   Shared watercolor block aesthetic
   ============================================================ */
.wc-block {
    position: absolute;
    width: var(--w, 100px);
    height: var(--h, 60px);
    background: var(--c, var(--indigo));
    border-radius: 4px 12px 8px 16px;
    opacity: 0;
    mix-blend-mode: multiply;
    box-shadow:
        0 0 24px 4px color-mix(in srgb, var(--c, #2c4a6e) 40%, transparent),
        5px 5px 30px 6px color-mix(in srgb, var(--c2, #d4a76a) 20%, transparent);
    filter: blur(0.3px);
    transition: opacity 0.9s ease-out, transform 0.9s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.wc-block::before {
    content: "";
    position: absolute;
    inset: -6px;
    background: var(--c, var(--indigo));
    border-radius: 8px 16px 12px 20px;
    opacity: 0.18;
    filter: blur(6px);
    z-index: -1;
}

.wc-block::after {
    content: "";
    position: absolute;
    inset: 2px 3px 3px 2px;
    background: linear-gradient(135deg,
        color-mix(in srgb, #ffffff 18%, transparent) 0%,
        transparent 40%,
        color-mix(in srgb, var(--c2, #d4a76a) 22%, transparent) 100%);
    border-radius: 3px 10px 7px 14px;
    mix-blend-mode: screen;
    pointer-events: none;
}

/* ============================================================
   Zone 1 — The Void
   ============================================================ */
.zone--void {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 0 0 15vw;
    background: radial-gradient(ellipse at 30% 50%, #faf4e7 0%, var(--linen) 60%);
}

.void-line {
    position: absolute;
    top: 50%;
    left: 0;
    height: 1px;
    width: 0;
    background: var(--indigo);
    opacity: 0.2;
    animation: void-line-draw 2s 0.5s ease-out forwards;
    transform: translateY(-0.5px);
}

@keyframes void-line-draw {
    0% { width: 0; }
    100% { width: 40vw; }
}

.void-wordmark {
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: void-wordmark-in 1.5s 1.8s ease-out forwards;
}

@keyframes void-wordmark-in {
    0% { opacity: 0; transform: translateX(-20px); }
    100% { opacity: 1; transform: translateX(0); }
}

.wordmark {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(4rem, 10vw, 9rem);
    letter-spacing: 0.03em;
    line-height: 1.0;
    color: var(--indigo);
    text-shadow: 1px 2px 0 color-mix(in srgb, var(--indigo) 10%, transparent);
}

.wordmark-sub {
    font-family: var(--font-hand);
    font-weight: 400;
    font-size: clamp(1.1rem, 1.8vw, 1.5rem);
    color: var(--sand);
    margin-top: 0.6rem;
    opacity: 0;
    animation: wordmark-sub-in 1.2s 2.6s ease-out forwards;
    letter-spacing: 0.04em;
}

@keyframes wordmark-sub-in {
    0% { opacity: 0; transform: translateY(6px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Zone 2 — Raw Material
   ============================================================ */
.zone--material {
    background: var(--linen);
}

.raw-label {
    position: absolute;
    top: 8%;
    left: 6%;
    font-family: var(--font-hand);
    color: var(--slate);
    opacity: 0.5;
    font-size: clamp(1.1rem, 2vw, 1.5rem);
}

.material-field {
    position: absolute;
    inset: 0;
}

.float-block {
    left: var(--x);
    top: var(--y);
    transform: translate(-50%, -50%) rotate(var(--r, 0deg));
    animation: float-bob var(--d, 7s) ease-in-out infinite alternate;
}

.zone--material.in-view .float-block {
    opacity: 0.55;
}

@keyframes float-bob {
    0% {
        transform: translate(-50%, -50%) translateY(-6px) rotate(calc(var(--r, 0deg) - 1deg));
    }
    50% {
        transform: translate(-50%, -50%) translateY(4px) rotate(calc(var(--r, 0deg) + 1.5deg));
    }
    100% {
        transform: translate(-50%, -50%) translateY(8px) rotate(calc(var(--r, 0deg) + 0.5deg));
    }
}

/* ============================================================
   Zone 3 — The Blueprint
   ============================================================ */
.zone--blueprint {
    background: var(--linen);
}

.seafoam-wash {
    position: absolute;
    inset: 0;
    background: var(--foam);
    opacity: 0.05;
    mix-blend-mode: multiply;
}

.blueprint-grid {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.grid-line {
    stroke: var(--indigo);
    stroke-width: 1;
    stroke-linecap: round;
    opacity: 0;
    stroke-dasharray: 1500;
    stroke-dashoffset: 1500;
}

.zone--blueprint.in-view .grid-line {
    opacity: 0.3;
    animation: grid-line-draw 2.4s ease-out forwards;
}

.zone--blueprint.in-view .grid-h:nth-child(1) { animation-delay: 0.0s; }
.zone--blueprint.in-view .grid-h:nth-child(2) { animation-delay: 0.12s; }
.zone--blueprint.in-view .grid-h:nth-child(3) { animation-delay: 0.24s; }
.zone--blueprint.in-view .grid-h:nth-child(4) { animation-delay: 0.36s; }
.zone--blueprint.in-view .grid-h:nth-child(5) { animation-delay: 0.48s; }
.zone--blueprint.in-view .grid-h:nth-child(6) { animation-delay: 0.60s; }
.zone--blueprint.in-view .grid-h:nth-child(7) { animation-delay: 0.72s; }
.zone--blueprint.in-view .grid-h:nth-child(8) { animation-delay: 0.84s; }
.zone--blueprint.in-view .grid-v:nth-of-type(1) { animation-delay: 0.2s; }

@keyframes grid-line-draw {
    0% {
        stroke-dashoffset: 1500;
        opacity: 0;
    }
    20% { opacity: 0.3; }
    100% {
        stroke-dashoffset: 0;
        opacity: 0.3;
    }
}

.grid-node {
    fill: none;
    stroke: var(--indigo);
    stroke-width: 1.5;
    opacity: 0;
    transform-origin: center;
    transform: scale(0);
}

.zone--blueprint.in-view .grid-node {
    opacity: 0.7;
    animation: node-pop 0.6s 1.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.zone--blueprint.in-view .grid-node:nth-of-type(2) { animation-delay: 1.75s; }
.zone--blueprint.in-view .grid-node:nth-of-type(3) { animation-delay: 1.9s; }
.zone--blueprint.in-view .grid-node:nth-of-type(4) { animation-delay: 2.05s; }
.zone--blueprint.in-view .grid-node:nth-of-type(5) { animation-delay: 2.2s; }
.zone--blueprint.in-view .grid-node:nth-of-type(6) { animation-delay: 2.35s; }

@keyframes node-pop {
    0% { transform: scale(0); opacity: 0; }
    60% { transform: scale(1.3); opacity: 0.8; }
    100% { transform: scale(1); opacity: 0.7; }
}

.annotation {
    position: absolute;
    font-family: var(--font-hand);
    font-weight: 400;
    color: var(--sand);
    font-size: clamp(1rem, 2.2vw, 1.6rem);
    line-height: 1.5;
    clip-path: inset(0 100% 0 0);
    opacity: 0.9;
    pointer-events: none;
}

.zone--blueprint.in-view .annotation {
    animation: brush-reveal 0.9s ease-out forwards;
}

.zone--blueprint.in-view .anno-1 { animation-delay: 2.4s; }
.zone--blueprint.in-view .anno-2 { animation-delay: 2.7s; }
.zone--blueprint.in-view .anno-3 { animation-delay: 3.0s; }
.zone--blueprint.in-view .anno-dim { animation-delay: 3.3s; color: var(--slate); opacity: 0.5; font-family: var(--font-ui); font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; }

@keyframes brush-reveal {
    0% { clip-path: inset(0 100% 0 0); }
    100% { clip-path: inset(0 0 0 0); }
}

.anno-1 { color: var(--indigo); }
.anno-2 { color: var(--teal); }
.anno-3 { color: var(--sand); }

/* ============================================================
   Zone 4 — Foundation
   ============================================================ */
.zone--foundation {
    background: var(--linen);
}

.foundation-baseline {
    position: absolute;
    left: 10%;
    right: 10%;
    bottom: 14%;
    height: 1px;
    background: var(--indigo);
    opacity: 0.2;
}

.foundation-stack {
    position: absolute;
    inset: 0;
}

.found-block {
    left: var(--sx);
    top: var(--sy);
    transform: translate(-50%, -50%) rotate(var(--sr, 0deg)) scale(0.92);
    opacity: 0;
    transition:
        opacity 0.8s ease-out,
        left 1.2s cubic-bezier(0.34, 1.56, 0.64, 1),
        top 1.2s cubic-bezier(0.34, 1.56, 0.64, 1),
        transform 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.zone--foundation.in-view .found-block {
    opacity: 0.55;
    left: var(--fx);
    top: var(--fy);
    transform: translate(-50%, -50%) rotate(0deg) scale(1);
}

.zone--foundation.in-view .found-block[data-idx="0"] { transition-delay: 0.05s; }
.zone--foundation.in-view .found-block[data-idx="1"] { transition-delay: 0.15s; }
.zone--foundation.in-view .found-block[data-idx="2"] { transition-delay: 0.25s; }
.zone--foundation.in-view .found-block[data-idx="3"] { transition-delay: 0.35s; }
.zone--foundation.in-view .found-block[data-idx="4"] { transition-delay: 0.45s; }
.zone--foundation.in-view .found-block[data-idx="5"] { transition-delay: 0.60s; }
.zone--foundation.in-view .found-block[data-idx="6"] { transition-delay: 0.70s; }
.zone--foundation.in-view .found-block[data-idx="7"] { transition-delay: 0.80s; }
.zone--foundation.in-view .found-block[data-idx="8"] { transition-delay: 0.90s; }
.zone--foundation.in-view .found-block[data-idx="9"] { transition-delay: 1.10s; }
.zone--foundation.in-view .found-block[data-idx="10"] { transition-delay: 1.20s; }
.zone--foundation.in-view .found-block[data-idx="11"] { transition-delay: 1.30s; }

.anno-gold {
    font-family: var(--font-hand);
    color: var(--sand);
    font-size: clamp(1rem, 2vw, 1.4rem);
    opacity: 0.8;
    clip-path: inset(0 100% 0 0);
}

.zone--foundation.in-view .anno-gold {
    animation: brush-reveal 1s 1.6s ease-out forwards;
}

/* ============================================================
   Zone 5 — Assembly
   ============================================================ */
.zone--assembly {
    background: linear-gradient(to right, var(--linen) 0%, #f3ede0 100%);
}

.assembly-cluster {
    position: absolute;
    inset: 0;
}

.asm-block {
    left: var(--ax);
    top: var(--ay);
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.9);
    transition:
        opacity 0.7s ease-out,
        transform 0.9s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.zone--assembly.in-view .asm-block {
    opacity: 0.6;
    transform: translate(-50%, -50%) scale(1);
}

.zone--assembly.in-view .asm-block:nth-child(1) { transition-delay: 0.05s; }
.zone--assembly.in-view .asm-block:nth-child(2) { transition-delay: 0.15s; }
.zone--assembly.in-view .asm-block:nth-child(3) { transition-delay: 0.25s; }
.zone--assembly.in-view .asm-block:nth-child(4) { transition-delay: 0.35s; }
.zone--assembly.in-view .asm-block:nth-child(5) { transition-delay: 0.45s; }
.zone--assembly.in-view .asm-block:nth-child(6) { transition-delay: 0.60s; }
.zone--assembly.in-view .asm-block:nth-child(7) { transition-delay: 0.70s; }
.zone--assembly.in-view .asm-block:nth-child(8) { transition-delay: 0.80s; }
.zone--assembly.in-view .asm-block:nth-child(9) { transition-delay: 0.90s; }
.zone--assembly.in-view .asm-block:nth-child(10) { transition-delay: 1.05s; }
.zone--assembly.in-view .asm-block:nth-child(11) { transition-delay: 1.15s; }
.zone--assembly.in-view .asm-block:nth-child(12) { transition-delay: 1.25s; }
.zone--assembly.in-view .asm-block:nth-child(13) { transition-delay: 1.40s; }
.zone--assembly.in-view .asm-block:nth-child(14) { transition-delay: 1.50s; }

.anno-teal {
    font-family: var(--font-hand);
    color: var(--teal);
    font-size: clamp(1rem, 2vw, 1.4rem);
    opacity: 0.85;
    clip-path: inset(0 100% 0 0);
}

.zone--assembly.in-view .anno-teal {
    animation: brush-reveal 1s 1.7s ease-out forwards;
}

/* ============================================================
   Zone 6 — Structure
   ============================================================ */
.zone--structure {
    background: linear-gradient(to right, var(--linen) 0%, color-mix(in srgb, var(--foam) 10%, var(--linen)) 100%);
    overflow: hidden;
}

.structure-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, transparent 0%, color-mix(in srgb, var(--foam) 10%, transparent) 100%);
    mix-blend-mode: multiply;
}

.sea-mist {
    position: absolute;
    top: 20%;
    left: -30%;
    width: 180%;
    height: 60%;
    background: linear-gradient(90deg,
        transparent 0%,
        color-mix(in srgb, var(--foam) 50%, transparent) 30%,
        color-mix(in srgb, var(--foam) 60%, transparent) 50%,
        color-mix(in srgb, var(--foam) 50%, transparent) 70%,
        transparent 100%);
    opacity: 0.08;
    filter: blur(40px);
    animation: sea-mist-drift 60s linear infinite;
}

@keyframes sea-mist-drift {
    0% { transform: translateX(-10%); }
    100% { transform: translateX(30%); }
}

.structure-cluster {
    position: absolute;
    inset: 0;
}

.str-block {
    left: var(--sx);
    top: var(--sy);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.9s ease-out;
}

.zone--structure.in-view .str-block {
    opacity: 0.68;
}

.paint-drip {
    position: absolute;
    width: 3px;
    height: 0;
    background: linear-gradient(to bottom,
        var(--dc, var(--indigo)) 0%,
        color-mix(in srgb, var(--dc, #2c4a6e) 60%, transparent) 60%,
        transparent 100%);
    opacity: 0.25;
    border-radius: 0 0 50% 50%;
    filter: blur(0.5px);
    transform: translateX(-50%);
    animation: drip-fall var(--dd, 6s) ease-in infinite;
    animation-delay: var(--dd, 0s);
}

@keyframes drip-fall {
    0% { height: 0; opacity: 0; }
    20% { opacity: 0.25; }
    80% { height: 60px; opacity: 0.25; }
    100% { height: 80px; opacity: 0; }
}

.anno-slate {
    font-family: var(--font-hand);
    color: var(--slate);
    font-size: clamp(1rem, 2vw, 1.4rem);
    opacity: 0.75;
    clip-path: inset(0 100% 0 0);
}

.zone--structure.in-view .anno-slate {
    animation: brush-reveal 1s 1.8s ease-out forwards;
}

/* ============================================================
   Zone 7 — Completion
   ============================================================ */
.zone--completion {
    background: var(--linen);
    overflow: hidden;
}

.dawn-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 80% 15%, color-mix(in srgb, var(--coral) 35%, transparent) 0%, transparent 45%),
        linear-gradient(135deg, var(--linen) 30%, color-mix(in srgb, var(--coral) 15%, var(--linen)) 100%);
    opacity: 0;
    transition: opacity 1.8s ease-out;
}

.zone--completion.in-view .dawn-gradient {
    opacity: 1;
}

.completion-cluster {
    position: absolute;
    inset: 0;
}

.cmp-block {
    left: var(--sx);
    top: var(--sy);
    transform: translate(-50%, -50%);
    opacity: 0;
    box-shadow:
        0 0 24px 4px color-mix(in srgb, var(--c, #2c4a6e) 45%, transparent),
        10px 14px 24px 4px color-mix(in srgb, var(--slate) 18%, transparent),
        5px 5px 30px 6px color-mix(in srgb, var(--c2, #d4a76a) 28%, transparent);
    transition: opacity 1.2s ease-out;
}

.zone--completion.in-view .cmp-block {
    opacity: 0.78;
}

.zone--completion.in-view .cmp-block:nth-child(1) { transition-delay: 0.05s; }
.zone--completion.in-view .cmp-block:nth-child(2) { transition-delay: 0.12s; }
.zone--completion.in-view .cmp-block:nth-child(3) { transition-delay: 0.19s; }
.zone--completion.in-view .cmp-block:nth-child(4) { transition-delay: 0.26s; }
.zone--completion.in-view .cmp-block:nth-child(5) { transition-delay: 0.33s; }
.zone--completion.in-view .cmp-block:nth-child(6) { transition-delay: 0.45s; }
.zone--completion.in-view .cmp-block:nth-child(7) { transition-delay: 0.52s; }
.zone--completion.in-view .cmp-block:nth-child(8) { transition-delay: 0.59s; }
.zone--completion.in-view .cmp-block:nth-child(9) { transition-delay: 0.66s; }
.zone--completion.in-view .cmp-block:nth-child(10) { transition-delay: 0.78s; }
.zone--completion.in-view .cmp-block:nth-child(11) { transition-delay: 0.85s; }
.zone--completion.in-view .cmp-block:nth-child(12) { transition-delay: 0.92s; }

.stamp {
    position: absolute;
    width: 70px;
    height: 70px;
    transform: translate(-50%, -50%) rotate(-6deg) scale(0.5);
    opacity: 0;
    transition: opacity 0.8s ease-out, transform 0.9s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.zone--completion.in-view .stamp {
    opacity: 0.85;
    transform: translate(-50%, -50%) rotate(-6deg) scale(1);
}

.zone--completion.in-view .stamp-1 { transition-delay: 1.4s; }
.zone--completion.in-view .stamp-2 { transition-delay: 1.7s; transform: translate(-50%, -50%) rotate(4deg) scale(1); }
.zone--completion.in-view .stamp-3 { transition-delay: 2.0s; transform: translate(-50%, -50%) rotate(-3deg) scale(1); }

.stamp-2 {
    transform: translate(-50%, -50%) rotate(4deg) scale(0.5);
}
.stamp-3 {
    transform: translate(-50%, -50%) rotate(-3deg) scale(0.5);
}

.completion-label {
    position: absolute;
    left: 50%;
    bottom: 10%;
    transform: translateX(-50%);
    font-family: var(--font-hand);
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--indigo);
    opacity: 0.85;
    clip-path: inset(0 100% 0 0);
    letter-spacing: 0.04em;
}

.zone--completion.in-view .completion-label {
    animation: brush-reveal 1.4s 2.2s ease-out forwards;
}

/* ============================================================
   Zone 8 — Stillness
   ============================================================ */
.zone--stillness {
    background: var(--linen);
    display: flex;
    align-items: center;
    justify-content: center;
}

.stillness-silhouette {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 2s ease-in;
}

.zone--stillness.in-view .stillness-silhouette {
    opacity: 1;
}

.sil-block {
    left: var(--sx);
    top: var(--sy);
    transform: translate(-50%, -50%);
    background: var(--slate);
    opacity: 0.2;
    mix-blend-mode: multiply;
    box-shadow:
        0 0 20px 2px color-mix(in srgb, var(--slate) 12%, transparent);
    filter: blur(0.5px);
}

.sil-block::after {
    display: none;
}

.stillness-word {
    position: relative;
    z-index: 2;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(5rem, 12vw, 10rem);
    color: var(--indigo);
    opacity: 0;
    letter-spacing: 0.04em;
    line-height: 1.0;
    transition: opacity 2.4s ease-out;
    text-shadow: 2px 4px 0 color-mix(in srgb, var(--indigo) 8%, transparent);
}

.zone--stillness.in-view .stillness-word {
    opacity: 0.6;
}

.breath-line {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 32%;
    height: 1px;
    background: var(--indigo);
    opacity: 0;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 3s ease-out, opacity 2s ease-out;
}

.zone--stillness.in-view .breath-line {
    opacity: 0.15;
    transform: scaleX(1);
    transition-delay: 1.6s;
}

.return-indicator {
    position: absolute;
    right: 6%;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.4rem;
    font-family: var(--font-ui);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--slate);
    opacity: 0;
    transition: opacity 1.2s ease-out;
    cursor: pointer;
    user-select: none;
}

.zone--stillness.in-view .return-indicator {
    opacity: 0.6;
    transition-delay: 2.4s;
}

.return-indicator:hover {
    opacity: 1 !important;
    color: var(--teal);
}

.ret-arrow {
    font-size: 1.8rem;
    line-height: 1;
    font-family: var(--font-display);
}

.ret-label {
    font-size: 0.7rem;
}

/* ============================================================
   Fixed overlays: progress bar, readout, scroll hint
   ============================================================ */
.progress-track {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px;
    background: color-mix(in srgb, var(--indigo) 8%, transparent);
    z-index: 100;
    pointer-events: none;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--teal);
    box-shadow: 0 0 12px color-mix(in srgb, var(--teal) 40%, transparent);
    transition: width 0.08s linear;
}

.progress-readout {
    position: fixed;
    right: 2rem;
    bottom: 1.2rem;
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--slate);
    opacity: 0.55;
    z-index: 100;
    pointer-events: none;
    font-variant-numeric: tabular-nums;
}

.scroll-hint {
    position: fixed;
    left: 50%;
    bottom: 2.5rem;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-ui);
    font-size: 0.7rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--slate);
    opacity: 0.6;
    z-index: 100;
    pointer-events: none;
    animation: hint-pulse 2.2s ease-in-out infinite;
    transition: opacity 0.8s ease-out;
}

.scroll-hint.hidden {
    opacity: 0;
}

.hint-arrow {
    font-size: 1.1rem;
    animation: hint-arrow 2.2s ease-in-out infinite;
}

@keyframes hint-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

@keyframes hint-arrow {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(6px); }
}

/* ============================================================
   Responsive — keep horizontal flow on smaller screens
   ============================================================ */
@media (max-width: 768px) {
    .wordmark {
        font-size: clamp(3rem, 14vw, 6rem);
    }
    .stillness-word {
        font-size: clamp(4rem, 16vw, 8rem);
    }
    .progress-readout { right: 1rem; bottom: 0.8rem; }
    .scroll-hint { bottom: 1.5rem; font-size: 0.65rem; }
}

/* ============================================================
   Vibration marks (zone 5 construction visual metaphor)
   ============================================================ */
.vibration {
    position: absolute;
    width: 32px;
    height: 1px;
    background: var(--indigo);
    opacity: 0;
    pointer-events: none;
    transform-origin: left center;
}

.vibration.fire {
    animation: vibration-burst 0.3s ease-out forwards;
}

@keyframes vibration-burst {
    0% { opacity: 0; transform: scaleX(0); }
    30% { opacity: 0.4; transform: scaleX(1); }
    100% { opacity: 0; transform: scaleX(1.4); }
}