/* soning.stream — accumulative maximalist meditation */

:root {
    --bg-base: #1C1D26;
    --bg-drift: #232433;
    --text-primary: #C8C9D4;
    --text-whisper: #7A7C8E;
    --accent-warm: #B8926A;
    --accent-cool: #6B8FA3;
    --collage-paper: #D4D0C8;
    --collage-shadow: #0F1018;
    --whisper-fragment: #8B8DA3;

    --column-width: min(680px, 88vw);
    --bounce-ease: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
    background: var(--bg-base);
}

body {
    font-family: 'Commissioner', 'Inter', system-ui, -apple-system, sans-serif;
    font-weight: 350;
    color: var(--text-primary);
    background: linear-gradient(to bottom,
        #1C1D26 0%,
        #1C1D26 18%,
        #232433 36%,
        #232433 56%,
        #1F1E28 72%,
        #1C1D26 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.78;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    opacity: 0;
    transition: opacity 600ms ease-out;
}

body.loaded {
    opacity: 1;
}

/* Grain overlay — fades in after load */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 100;
    mix-blend-mode: overlay;
    opacity: 0;
    transition: opacity 1400ms ease-out;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240' viewBox='0 0 240 240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.78 0 0 0 0 0.79 0 0 0 0 0.83 0 0 0 0.04 0'/></filter><rect width='240' height='240' filter='url(%23n)'/></svg>");
    background-size: 240px 240px;
}

body.grain-on::before {
    opacity: 1;
}

/* Canvases */
.ambient-canvas,
.drift-canvas,
.attraction-canvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.drift-canvas {
    z-index: 2;
}

.attraction-canvas {
    z-index: 3;
    opacity: 0;
    transition: opacity 1200ms ease-out;
}

.attraction-canvas.active {
    opacity: 1;
}

/* Radial menu tab */
.radial-tab {
    position: fixed;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    z-index: 200;
    pointer-events: auto;
}

.radial-arc {
    position: absolute;
    top: -40px;
    right: -40px;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 70%, rgba(122, 124, 142, 0.4), rgba(122, 124, 142, 0));
    border: 1px solid rgba(122, 124, 142, 0.35);
    transition: all 400ms ease;
    cursor: pointer;
}

.radial-tab:hover .radial-arc,
.radial-tab.open .radial-arc {
    background: radial-gradient(circle at 30% 70%, rgba(184, 146, 106, 0.45), rgba(122, 124, 142, 0));
    border-color: rgba(184, 146, 106, 0.6);
    transform: scale(1.05);
}

.radial-menu {
    position: absolute;
    top: 60px;
    right: 24px;
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 400ms ease, transform 400ms var(--bounce-ease);
    transform: translateY(-8px) scale(0.96);
    text-align: right;
}

.radial-tab:hover .radial-menu,
.radial-tab.open .radial-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.radial-link {
    color: var(--text-whisper);
    font-size: 11px;
    font-weight: 350;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color 300ms ease, letter-spacing 300ms ease;
    padding: 2px 0;
}

.radial-link:hover {
    color: var(--accent-warm);
    letter-spacing: 0.2em;
}

/* Stream column */
.stream {
    position: relative;
    z-index: 5;
    width: var(--column-width);
    margin: 0 auto;
    padding-top: 22vh;
    padding-bottom: 30vh;
}

/* Movements */
.movement {
    position: relative;
    padding-block: clamp(6rem, 12vh, 10rem);
    scroll-snap-align: start;
}

.movement-i {
    min-height: 120vh;
}

.movement-ii {
    min-height: 130vh;
}

.movement-iii {
    min-height: 130vh;
}

.movement-iv {
    min-height: 100vh;
}

.movement-v {
    min-height: 90vh;
}

/* Titles */
.title {
    font-weight: 200;
    font-size: clamp(2.8rem, 6vw, 4.2rem);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-primary);
    opacity: 0.82;
    margin-bottom: 2.4rem;
    line-height: 1.1;
    position: relative;
    z-index: 4;
}

.title-primary {
    font-size: clamp(3.2rem, 7vw, 5rem);
    letter-spacing: 0.15em;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 1800ms ease-out, transform 1800ms ease-out;
}

.title-primary.is-visible {
    opacity: 0.8;
    transform: translateY(0);
}

.subtitle {
    font-weight: 300;
    font-size: clamp(0.95rem, 1.4vw, 1.05rem);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text-whisper);
    margin-bottom: 3rem;
    opacity: 0;
    transition: opacity 1400ms ease-out 800ms;
}

.subtitle.is-visible {
    opacity: 0.85;
}

/* Body / prose */
.prose-block {
    font-weight: 350;
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.78;
    color: var(--text-primary);
    margin-bottom: 2.6rem;
    position: relative;
    z-index: 4;
}

.prose-block.warm {
    color: color-mix(in srgb, #C8C9D4 90%, #B8926A);
    margin-bottom: 4rem;
}

.prose-block.centered {
    text-align: center;
    max-width: 36ch;
    margin-inline: auto;
}

.prose-block.medium {
    font-weight: 300;
    font-size: clamp(1.15rem, 2vw, 1.35rem);
    line-height: 1.7;
}

.prose-block.stagger {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 800ms var(--bounce-ease), transform 800ms var(--bounce-ease);
}

.prose-block.stagger.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.prose-block.stagger[data-stagger="1"] { transition-delay: 1200ms; }
.prose-block.stagger[data-stagger="2"] { transition-delay: 1600ms; }
.prose-block.stagger[data-stagger="3"] { transition-delay: 2000ms; }

.prose-block.fade-step {
    opacity: 0;
    transition: opacity 1200ms ease-out;
    text-align: center;
    margin-block: 4rem;
}

.prose-block.fade-step.is-visible {
    opacity: 0.78;
}

.prose-block.fade-step.fade-2.is-visible { opacity: 0.6; }
.prose-block.fade-step.fade-3.is-visible { opacity: 0.4; }
.prose-block.fade-step.fade-4.is-visible { opacity: 0.5; }

.ending-word {
    font-weight: 100;
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0.2em;
    color: var(--text-primary);
    text-align: center;
    margin-top: 6rem;
}

.fade-title {
    opacity: 0.5;
}

.trailing-space {
    height: 30vh;
}

/* Pull quotes */
.pull-quote {
    font-weight: 600;
    font-style: italic;
    font-size: clamp(1.4rem, 3vw, 2rem);
    letter-spacing: 0.04em;
    line-height: 1.4;
    color: var(--text-primary);
    margin: 3.5rem 0 3.5rem -1.5rem;
    padding-left: 1.4rem;
    border-left: 1.5px solid var(--accent-warm);
    position: relative;
    z-index: 4;
}

.pull-quote cite {
    display: block;
    font-style: normal;
    font-weight: 300;
    font-size: clamp(0.85rem, 1.2vw, 0.95rem);
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent-warm);
    margin-top: 0.9rem;
    opacity: 0.85;
}

/* Ghost / whisper text fragments */
.ghost-text {
    position: absolute;
    font-weight: 100;
    font-size: clamp(2.6rem, 5vw, 4rem);
    letter-spacing: 0.06em;
    color: var(--text-whisper);
    opacity: 0.4;
    pointer-events: none;
    user-select: none;
    z-index: 2;
    white-space: nowrap;
}

.ghost-1 { top: 8%; right: -10%; transform: rotate(-3deg); }
.ghost-2 { bottom: 18%; left: -12%; transform: rotate(2deg); font-size: clamp(3rem, 6vw, 5rem); }
.ghost-3 { top: 6%; left: -8%; transform: rotate(-2deg); }
.ghost-4 { top: 30%; right: -12%; transform: rotate(3deg); }
.ghost-5 { top: 56%; left: -10%; transform: rotate(-1deg); font-size: clamp(2rem, 4vw, 3rem); }
.ghost-6 { bottom: 6%; right: -8%; transform: rotate(2deg); font-size: clamp(2.4rem, 4.5vw, 3.6rem); }
.ghost-7 { top: 14%; right: -10%; transform: rotate(-2deg); color: var(--accent-warm); opacity: 0.3; }
.ghost-8 { bottom: 22%; left: -8%; transform: rotate(2deg); color: var(--accent-warm); opacity: 0.28; }

/* Waveforms */
.waveform {
    display: block;
    width: 100%;
    margin: 2.4rem 0;
    overflow: visible;
    position: relative;
    z-index: 3;
}

.wave-path {
    fill: none;
    stroke: var(--accent-cool);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.85;
}

.waveform-marker {
    margin: 5rem 0;
    height: 24px;
}

.waveform-marker .wave-path {
    opacity: 0.6;
}

.wave-draw {
    stroke-dasharray: 1400;
    stroke-dashoffset: 1400;
    animation: drawWave 2500ms ease-out 1400ms forwards;
}

.wave-draw-on-scroll {
    stroke-dasharray: 1400;
    stroke-dashoffset: 1400;
    transition: stroke-dashoffset 1500ms ease-out;
}

.wave-draw-on-scroll.is-visible {
    stroke-dashoffset: 0;
}

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

/* Breathing waveform animations */
.breathing-a {
    transform-origin: center;
    animation: breatheA 4s ease-in-out infinite;
}

.breathing-b {
    animation: breatheB 5s ease-in-out infinite;
    opacity: 0.7;
}

.breathing-c {
    animation: breatheC 3.5s ease-in-out infinite;
    opacity: 0.55;
    stroke: color-mix(in srgb, #6B8FA3 70%, #B8926A);
}

@keyframes breatheA {
    0%, 100% { transform: scaleY(1); opacity: 0.85; }
    50% { transform: scaleY(1.4); opacity: 0.6; }
}

@keyframes breatheB {
    0%, 100% { transform: scaleY(0.8); opacity: 0.7; }
    50% { transform: scaleY(1.2); opacity: 0.45; }
}

@keyframes breatheC {
    0%, 100% { transform: scaleY(1.1); opacity: 0.55; }
    50% { transform: scaleY(0.7); opacity: 0.35; }
}

/* Slow waves for Movement III */
.breathing-slow-a { animation: breatheSlowA 8s ease-in-out infinite; }
.breathing-slow-b { animation: breatheSlowA 9s ease-in-out infinite; opacity: 0.7; }
.breathing-slow-c { animation: breatheSlowA 10s ease-in-out infinite; opacity: 0.55; }

@keyframes breatheSlowA {
    0%, 100% { transform: scaleY(0.9); }
    50% { transform: scaleY(1.15); }
}

/* Composite waveform */
.composite-wave-container {
    position: relative;
    margin: 4rem 0;
}

.composite-wave {
    width: 100%;
    height: 200px;
    overflow: visible;
}

.composite-a { stroke: var(--accent-cool); opacity: 0.9; }
.composite-b { stroke: color-mix(in srgb, #6B8FA3 60%, #B8926A); opacity: 0.7; }
.composite-c { stroke: var(--accent-warm); opacity: 0.6; stroke-width: 1.2; }

.scroll-draw {
    stroke-dasharray: 1600;
    stroke-dashoffset: 1600;
    transition: stroke-dashoffset 200ms linear;
}

/* Flatten wave for fade movement */
.waveform-flatten {
    margin-block: 5rem;
}

.flatten-path {
    transition: d 1200ms ease-out;
    opacity: 0.5;
}

/* Collage fragments */
.collage-fragment {
    position: absolute;
    left: var(--offset-x, 20%);
    top: var(--top, 50%);
    width: var(--w, 200px);
    height: var(--h, 120px);
    transform: rotate(var(--rot, 0deg));
    box-shadow: 4px 6px 20px rgba(15, 16, 24, 0.5);
    clip-path: var(--clip);
    z-index: 2;
    pointer-events: none;
}

.fragment-paper {
    background: var(--collage-paper);
    opacity: 0.18;
}

.fragment-paper-warm {
    background: linear-gradient(135deg, var(--collage-paper) 0%, color-mix(in srgb, #D4D0C8 60%, #B8926A) 100%);
    opacity: 0.22;
}

.fragment-dark {
    background: var(--bg-drift);
    opacity: 0.55;
    border: 1px solid rgba(200, 201, 212, 0.05);
}

.fragment-ghost {
    background: var(--collage-paper);
    opacity: 0.15;
}

.collage-fragment.drift-in-right {
    transform: translateX(60px) rotate(var(--rot, 0deg));
    opacity: 0;
    transition: transform 1000ms var(--bounce-ease) 2200ms,
                opacity 1000ms ease-out 2200ms;
}

.collage-fragment.drift-in-right.is-visible {
    transform: translateX(0) rotate(var(--rot, 0deg));
    opacity: var(--target-opacity, 0.18);
}

.collage-fragment.drift-in-right.fragment-dark.is-visible {
    opacity: 0.55;
}

.collage-fragment.burst-trigger {
    opacity: 0;
    transform: translateY(12px) rotate(var(--rot, 0deg));
    transition: opacity 600ms var(--bounce-ease),
                transform 600ms var(--bounce-ease);
}

.collage-fragment.burst-trigger.is-visible {
    opacity: 0.22;
    transform: translateY(0) rotate(var(--rot, 0deg));
}

.collage-fragment.burst-trigger.fragment-dark.is-visible {
    opacity: 0.55;
}

.collage-fragment.burst-trigger.fragment-paper-warm.is-visible {
    opacity: 0.28;
}

/* Section markers */
.section-marker {
    margin-block: 6rem 4rem;
    opacity: 0.85;
}

/* Movement-specific section background hints (gradients between sections) */
.movement-i::before,
.movement-iii::before,
.movement-v::before {
    content: "";
    position: absolute;
    inset: -10vh -50vw 0 -50vw;
    background: linear-gradient(to bottom, transparent 0%, rgba(28, 29, 38, 0.15) 50%, transparent 100%);
    pointer-events: none;
    z-index: 0;
}

.movement-ii::before,
.movement-iv::before {
    content: "";
    position: absolute;
    inset: -10vh -50vw 0 -50vw;
    background: linear-gradient(to bottom, transparent 0%, rgba(35, 36, 51, 0.25) 50%, transparent 100%);
    pointer-events: none;
    z-index: 0;
}

/* Responsive tweaks */
@media (max-width: 480px) {
    .ghost-text { font-size: clamp(2rem, 7vw, 3rem); }
    .pull-quote {
        margin-left: -0.6rem;
        padding-left: 1rem;
    }
    .stream {
        padding-top: 18vh;
    }
}