/* ==========================================================
   luminous.quest — A horizontal-scroll journey through light
   Palette:
     Prism White   #f8f8ff
     Spectrum Red  #ff3b3b
     Sp. Orange    #ff8c42
     Sp. Yellow    #ffd23f
     Sp. Green     #3ddc84
     Sp. Blue      #4285f4
     Sp. Violet    #7c4dff
     UV Dark       #0a0014
     Biolume       #39ff14
     Hot Pink      #ff1493
   ========================================================== */

:root {
    --prism-white: #f8f8ff;
    --sp-red: #ff3b3b;
    --sp-orange: #ff8c42;
    --sp-yellow: #ffd23f;
    --sp-green: #3ddc84;
    --sp-blue: #4285f4;
    --sp-violet: #7c4dff;
    --uv-dark: #0a0014;
    --biolume: #39ff14;
    --hot-pink: #ff1493;

    --rainbow: linear-gradient(90deg,
        #ff3b3b 0%,
        #ff8c42 18%,
        #ffd23f 34%,
        #3ddc84 52%,
        #4285f4 72%,
        #7c4dff 100%);

    --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
    --font-body:    "Inter", system-ui, sans-serif;
    --font-mono:    "Source Code Pro", ui-monospace, monospace;
}

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

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    background: var(--prism-white);
    color: #111;
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    position: relative;
}

/* ============== Rainbow progress bar (fixed top) ============== */
.rainbow-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(0, 0, 0, 0.06);
    z-index: 1000;
    overflow: hidden;
}
.rainbow-progress-fill {
    height: 100%;
    width: 0;
    background: var(--rainbow);
    background-size: 200% 100%;
    animation: rainbowShift 8s linear infinite;
    transition: width 0.18s ease-out;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.45);
}
@keyframes rainbowShift {
    0%   { background-position:   0% 50%; }
    100% { background-position: 200% 50%; }
}

/* ============== Prism navigation (right edge) ============== */
.prism-nav {
    position: fixed;
    right: 1.4rem;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    z-index: 999;
}
.prism-dot {
    width: 16px;
    height: 14px;
    background: rgba(255, 255, 255, 0.55);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    border: 0;
    padding: 0;
    cursor: pointer;
    opacity: 0.55;
    transition: opacity 0.25s ease, transform 0.25s ease, background 0.25s ease;
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.4));
}
.prism-dot:hover {
    opacity: 1;
    transform: scale(1.25);
}
.prism-dot.is-active {
    opacity: 1;
    transform: scale(1.35);
    background: rgba(255, 255, 255, 0.95);
    filter:
        drop-shadow(0 0 4px var(--sp-red))
        drop-shadow(0 0 6px var(--sp-violet));
}

/* ============== Horizontal scroll container ============== */
.spectrum-scroll {
    display: flex;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    height: 100vh;
    width: 100vw;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}
.spectrum-scroll::-webkit-scrollbar { display: none; }

.chamber {
    position: relative;
    flex: 0 0 100vw;
    min-width: 100vw;
    height: 100vh;
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem clamp(1.5rem, 6vw, 6rem);
    overflow: hidden;
}

/* ============== Chamber-specific backgrounds ============== */
.chamber-hero    { background: var(--prism-white); color: #111; }
.chamber-red     { background: var(--sp-red);    color: #fff8f8; }
.chamber-orange  { background: var(--sp-orange); color: #fffaf3; }
.chamber-yellow  { background: var(--sp-yellow); color: #2a200a; }
.chamber-green   { background: var(--sp-green);  color: #053319; }
.chamber-blue    { background: var(--sp-blue);   color: #f4f8ff; }
.chamber-violet  { background: var(--sp-violet); color: #f6f3ff; }
.chamber-uv      { background: var(--uv-dark);   color: #2a1f3a; }

/* Subtle radial vignette inside each colored chamber */
.chamber:not(.chamber-hero):not(.chamber-uv)::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 55%,
        rgba(255, 255, 255, 0.15) 0%,
        rgba(255, 255, 255, 0) 55%),
        radial-gradient(ellipse at 50% 100%,
        rgba(0, 0, 0, 0.25) 0%,
        rgba(0, 0, 0, 0) 60%);
    pointer-events: none;
}

/* ============== Wavelength label (top-right of each chamber) ============== */
.wavelength-label {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    opacity: 0.4;
    text-transform: lowercase;
    z-index: 5;
}

/* ============== Chamber tag (eyebrow) ============== */
.chamber-tag {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    margin-bottom: 1.4rem;
    opacity: 0.85;
    padding: 0.4rem 0.85rem;
    border: 1px solid currentColor;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(2px);
}

.chamber-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    line-height: 1.05;
    letter-spacing: -0.015em;
    text-align: center;
    max-width: 18ch;
    margin-bottom: 1.5rem;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.2);
}

.chamber-body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(0.95rem, 1.15vw, 1.05rem);
    line-height: 1.75;
    text-align: center;
    max-width: 52ch;
    margin-bottom: 2.4rem;
    opacity: 0.95;
}

/* ============== Data row (wavelength / frequency / source) ============== */
.data-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.2rem;
    margin-top: 0.5rem;
    z-index: 4;
    position: relative;
}
.data-cell {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.7rem 1.2rem;
    background: rgba(0, 0, 0, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 4px;
    min-width: 11rem;
    backdrop-filter: blur(4px);
}
.data-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    opacity: 0.65;
}
.data-value {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 500;
}

/* yellow chamber needs a darker data plate */
.chamber-yellow .data-cell {
    background: rgba(0, 0, 0, 0.12);
    border-color: rgba(0, 0, 0, 0.2);
}

/* ============== Prism marker (decorative footer triangle on each chamber) ============== */
.prism-marker {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 24px;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: rgba(255, 255, 255, 0.9);
    filter:
        drop-shadow(0 0 4px rgba(255, 59, 59, 0.6))
        drop-shadow(0 0 6px rgba(124, 77, 255, 0.6));
    opacity: 0.85;
    animation: prismFloat 6s ease-in-out infinite;
}
@keyframes prismFloat {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(-6px); }
}

/* ============== Scatter field (floating photon dots) ============== */
.scatter-field {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 1;
}
.scatter-dot {
    position: absolute;
    border-radius: 50%;
    will-change: transform, opacity;
    animation: photonDrift var(--drift-dur, 14s) ease-in-out infinite;
    animation-delay: var(--drift-delay, 0s);
}
@keyframes photonDrift {
    0%   { transform: translate(0, 0) scale(1);    opacity: var(--dot-op, 0.5); }
    50%  { transform: translate(var(--dx, 30px), var(--dy, -20px)) scale(1.25); opacity: 0.95; }
    100% { transform: translate(0, 0) scale(1);    opacity: var(--dot-op, 0.5); }
}

/* ============== Hero / Chamber 0 ============== */
.chamber-hero {
    position: relative;
}
.hero-spectral-glow {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 380px;
    transform: translateY(-50%);
    background: var(--rainbow);
    background-size: 200% 100%;
    filter: blur(60px);
    opacity: 0.38;
    animation: rainbowShift 8s linear infinite, hueCycle 16s linear infinite;
    pointer-events: none;
    z-index: 0;
}
@keyframes hueCycle {
    0%   { filter: blur(60px) hue-rotate(0deg);   }
    100% { filter: blur(60px) hue-rotate(360deg); }
}

/* the white-light beam entering from the left */
.hero-beam {
    position: absolute;
    top: 50%;
    left: -10%;
    width: 60%;
    height: 8px;
    transform: translateY(-50%);
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.95) 60%,
        rgba(255, 255, 255, 1) 100%);
    filter: blur(2px);
    box-shadow: 0 0 24px rgba(255, 255, 255, 0.85);
    opacity: 0;
    z-index: 2;
    animation: beamEnter 3.4s ease-out 0.4s forwards;
}
@keyframes beamEnter {
    0%   { opacity: 0; left: -30%; }
    35%  { opacity: 1; }
    100% { opacity: 1; left: 38%; }
}

/* the spectrum split exiting the right side of the prism */
.hero-split {
    position: absolute;
    top: 50%;
    left: 56%;
    width: 50%;
    height: 220px;
    transform: translateY(-50%);
    background:
        linear-gradient(95deg,
            rgba(255, 59, 59, 0) 0%,
            rgba(255, 59, 59, 0.55) 12%,
            rgba(255, 140, 66, 0.55) 22%,
            rgba(255, 210, 63, 0.55) 35%,
            rgba(61, 220, 132, 0.55) 50%,
            rgba(66, 133, 244, 0.55) 68%,
            rgba(124, 77, 255, 0.55) 88%,
            rgba(124, 77, 255, 0) 100%);
    filter: blur(14px);
    opacity: 0;
    pointer-events: none;
    z-index: 2;
    animation: splitFan 4s ease-out 1.5s forwards;
    transform-origin: left center;
}
@keyframes splitFan {
    0%   { opacity: 0; transform: translateY(-50%) scaleY(0.2); }
    60%  { opacity: 0.85; }
    100% { opacity: 0.7; transform: translateY(-50%) scaleY(1); }
}

.prism-stage {
    position: relative;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prism-shape {
    position: relative;
    width: 240px;
    height: 208px;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background:
        linear-gradient(135deg,
            rgba(255, 255, 255, 0.92) 0%,
            rgba(255, 255, 255, 0.78) 60%,
            rgba(248, 248, 255, 0.92) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 38px;
    box-shadow:
        inset 0 0 60px rgba(255, 255, 255, 0.6),
        inset 0 -10px 30px rgba(124, 77, 255, 0.25);
    animation: prismHover 7s ease-in-out infinite;
}
@keyframes prismHover {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50%      { transform: translateY(-10px) rotate(0.4deg); }
}

/* rainbow border glow around the prism */
.prism-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 320px;
    height: 280px;
    transform: translate(-50%, -45%);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: var(--rainbow);
    background-size: 200% 100%;
    filter: blur(28px);
    opacity: 0.55;
    z-index: -1;
    animation: rainbowShift 8s linear infinite;
}

.prism-inner {
    display: inline-flex;
    align-items: baseline;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.05rem, 1.7vw, 1.35rem);
    letter-spacing: 0.02em;
    color: #1a1428;
    transform: translateY(-4px);
}
.brand-mark {
    background: linear-gradient(90deg, #ff3b3b, #7c4dff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.brand-mark-alt {
    background: linear-gradient(90deg, #3ddc84, #4285f4);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.brand-dot { color: #1a1428; padding: 0 1px; }

.hero-subtitle {
    margin-top: 2.4rem;
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.3vw, 1.25rem);
    font-weight: 400;
    letter-spacing: 0.02em;
    color: #1a1428;
    opacity: 0.85;
    text-align: center;
    max-width: 38ch;
    z-index: 3;
}
.hero-instruction {
    margin-top: 1.2rem;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: #1a1428;
    opacity: 0.55;
    z-index: 3;
    animation: pulseInstruct 2.6s ease-in-out infinite;
}
@keyframes pulseInstruct {
    0%, 100% { opacity: 0.45; transform: translateX(0); }
    50%      { opacity: 0.85; transform: translateX(6px); }
}

.chamber-hero .wavelength-label {
    color: #1a1428;
}

/* ============== UV / Black Light final chamber ============== */
.chamber-uv {
    position: relative;
    color: #2a1f3a;
}
.chamber-uv::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 30%, rgba(124, 77, 255, 0.15) 0%, rgba(0,0,0,0) 45%),
        radial-gradient(circle at 70% 70%, rgba(255, 20, 147, 0.10) 0%, rgba(0,0,0,0) 50%),
        radial-gradient(circle at 50% 50%, rgba(57, 255, 20, 0.04) 0%, rgba(0,0,0,0) 60%);
    pointer-events: none;
}

.uv-tag {
    color: rgba(124, 77, 255, 0.85);
    border-color: rgba(124, 77, 255, 0.55);
    background: rgba(124, 77, 255, 0.08);
}

.uv-title {
    color: rgba(124, 77, 255, 0.55);
    text-shadow:
        0 0 10px rgba(124, 77, 255, 0.4),
        0 0 22px rgba(124, 77, 255, 0.25);
}

.uv-body {
    color: rgba(170, 150, 210, 0.65);
}

.uv-grid {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-top: 1.5rem;
    max-width: 56ch;
    text-align: center;
}
.uv-line {
    margin: 0;
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 1.2vw, 1.05rem);
    line-height: 1.65;
}
.uv-text {
    color: var(--uv-dark);
    transition:
        color 0.35s ease,
        text-shadow 0.35s ease;
    cursor: default;
    padding: 0.1rem 0.2rem;
    border-radius: 2px;
}
.uv-text:hover {
    color: var(--biolume);
    text-shadow:
        0 0 10px var(--biolume),
        0 0 20px var(--biolume),
        0 0 38px rgba(57, 255, 20, 0.55);
}
.uv-text.uv-pink:hover {
    color: var(--hot-pink);
    text-shadow:
        0 0 10px var(--hot-pink),
        0 0 20px var(--hot-pink),
        0 0 38px rgba(255, 20, 147, 0.55);
}

.uv-footer {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.6rem;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: lowercase;
    color: rgba(170, 150, 210, 0.5);
}
.uv-foot-mark {
    color: rgba(124, 77, 255, 0.85);
}
.uv-foot-mark:hover {
    color: var(--biolume);
    text-shadow: 0 0 8px var(--biolume);
}

.uv-prism {
    background: rgba(124, 77, 255, 0.45);
    filter:
        drop-shadow(0 0 6px var(--hot-pink))
        drop-shadow(0 0 12px var(--biolume));
}

.chamber-uv .wavelength-label {
    color: rgba(124, 77, 255, 0.55);
}

/* ============== Reduced motion respect ============== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001s !important;
    }
}

/* ============== Smaller viewport tweaks ============== */
@media (max-width: 720px) {
    .chamber { padding: 3rem 1.4rem; }
    .data-row { gap: 0.6rem; }
    .data-cell { min-width: 9rem; padding: 0.55rem 0.9rem; }
    .prism-nav { right: 0.6rem; gap: 0.55rem; }
    .prism-shape { width: 180px; height: 156px; padding-bottom: 28px; }
    .prism-glow  { width: 240px; height: 210px; }
    .hero-instruction { letter-spacing: 0.18em; }
    .uv-footer { bottom: 1.4rem; }
}