/* ═══════════════════════════════════════════════════════
   WHETHER v3 — LIVING LANDSCAPE
   Turrell light fields · Martin grid · Monet atmosphere
   ═══════════════════════════════════════════════════════ */

@media (orientation: landscape) {
    html {
        font-size: 1vh;
    }
}

@media (orientation: portrait) {
    html {
        font-size: 1vw;
    }
}

:root {
    /* Sky — set by JS */
    --sky-top: #1a2a40;
    --sky-mid: #2a4a7a;
    --sky-bot: #5a8aba;
    --sky-glow: rgba(255, 220, 160, 0);
    --glow-x: 70%;
    --glow-y: 25%;
    --glow-i: 0.08;

    /* Ground — set by JS */
    --land-h: 120;
    --land-s: 20%;
    --land-l: 8%;
    --ground-base: hsl(var(--land-h), var(--land-s), var(--land-l));

    /* Vegetation — set by JS */
    --veg-hue: 90;
    --veg-sat: 40%;
    --veg-l: 30%;
    --veg-o: 1;

    /* Bark */
    --bark-l: #3a2a18;
    --bark-d: #1a1008;

    /* Dynamics — set by JS */
    --wind-dur: 10s;
    --wind-amp: 2deg;
    --ease: cubic-bezier(.45, .05, .55, .95);
}

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

body {
    background: #000;
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
    transition: background 4s var(--ease);
    justify-content: center;
    border-radius: 0 !important;
}

html,
pic {
    border-radius: 0 !important;
}

/* Custom element reset */
pic,
item,
i {
    display: block;
    position: absolute;
}

/* ═══════════════════════
   CANVAS
   ═══════════════════════ */
pic {
    width: 100vw;
    height: 100vh;
    position: absolute;
    inset: 0;
    transform: translateZ(0);
    /* Hardware accel */
    overflow: hidden;
    border-radius: 0;
    /* Sky gradient blending into ground */
    background: linear-gradient(to bottom, var(--sky-top) 0%, var(--sky-bot) 75%, var(--ground-base) 100%);
    box-shadow:
        inset 0 0 25vw 2vw rgba(0, 0, 0, 0.15),
        inset 0 -5vh 15vh rgba(0, 0, 0, 0.2);
    transition: background 5s var(--ease);
}

/* ═══════════════════════
   UI LAYER
   ═══════════════════════ */
#ui-layer {
    position: absolute;
    inset: 0;
    z-index: 300;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#state-text {
    font-weight: 200;
    letter-spacing: 0.2em;
    text-transform: lowercase;
    font-size: 1.3em;
    color: rgba(255, 255, 255, 0.2);
    transition: opacity 1.5s var(--ease);
    animation: pulse 2.5s var(--ease) infinite;
}

#weather-info {
    position: absolute;
    bottom: 3.5em;
    left: 3.5em;
    text-align: left;
    transition: opacity 2.5s var(--ease);
}

#weather-info.hidden {
    opacity: 0;
}

#temp {
    font-size: 2.2em;
    font-weight: 200;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.15);
}

#cond {
    font-size: 0.9em;
    letter-spacing: 0.2em;
    text-transform: lowercase;
    color: rgba(255, 255, 255, 0.1);
    margin-top: 0.3em;
}

#loc {
    font-size: 0.7em;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.06);
    margin-top: 0.4em;
}

/* ═══════════════════════
   RADIO PLAYER
   ═══════════════════════ */
#radio-player {
    position: absolute;
    top: 3.5em;
    right: 3.5em;
    display: flex;
    align-items: center;
    gap: 1em;
    opacity: 0;
    transition: opacity 2.5s var(--ease);
    pointer-events: auto;
}

body.is-alive #radio-player {
    opacity: 1;
}

#radio-station {
    font-size: 0.7em;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
    font-weight: 200;
}

#radio-btn {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 2.5em;
    height: 2.5em;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.6);
    transition: all 0.3s var(--ease);
}

#radio-btn:hover {
    border-color: rgba(255, 255, 255, 0.8);
    color: #fff;
    transform: scale(1.05);
}

#radio-btn svg {
    width: 1em;
    height: 1em;
}

/* Toggle Play/Pause Icons */
#radio-btn .icon-pause {
    display: none;
}

#radio-btn.playing .icon-play {
    display: none;
}

#radio-btn.playing .icon-pause {
    display: block;
}

#radio-btn.playing {
    border-color: rgba(255, 255, 255, 0.8);
    color: #fff;
    box-shadow: 0 0 1em rgba(255, 255, 255, 0.2);
}

/* ═══════════════════════
   LIGHT FIELD (Turrell)
   ═══════════════════════ */
#lightfield {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.lf {
    position: absolute;
    inset: 0;
    border-radius: 2em;
    transition: background 6s var(--ease), opacity 6s var(--ease);
}

.lf-1 {
    background: radial-gradient(ellipse 140% 110% at 50% 40%,
            hsla(210, 50%, 60%, 0.3), transparent 70%);
}

.lf-2 {
    background: radial-gradient(ellipse 70% 60% at var(--glow-x) var(--glow-y),
            var(--sky-glow), transparent 65%);
    mix-blend-mode: screen;
    animation: glow-breathe 40s var(--ease) infinite alternate;
}

.lf-3 {
    background: radial-gradient(circle at var(--glow-x) var(--glow-y),
            rgba(255, 250, 230, calc(var(--glow-i)*3)),
            rgba(255, 220, 150, calc(var(--glow-i)*1.2)) 12%,
            transparent 40%);
    mix-blend-mode: screen;
    animation: glow-pulse 30s var(--ease) infinite alternate;
}

.lf-4 {
    background: linear-gradient(to top,
            hsla(var(--land-h), 15%, 20%, 0.4), transparent 35%);
}

@keyframes glow-breathe {
    0% {
        opacity: .85
    }

    100% {
        opacity: 1
    }
}

@keyframes glow-pulse {
    0% {
        opacity: .9;
        transform: scale(.98)
    }

    100% {
        opacity: 1;
        transform: scale(1.02)
    }
}

/* ═══════════════════════
   DEPTH ZONES
   ═══════════════════════ */
#sky-zone {
    position: absolute;
    inset: 0;
    z-index: 2;
}

#cloud-zone {
    position: absolute;
    inset: 0;
    z-index: 3;
}

#bg-zone {
    position: absolute;
    inset: 0;
}

#mid-zone {
    position: absolute;
    inset: 0;
}

#fg-zone {
    position: absolute;
    inset: 0;
}

#bird-zone {
    position: absolute;
    inset: 0;
    z-index: 40;
    pointer-events: none;
}

#precip-zone {
    position: absolute;
    inset: 0;
    z-index: 50;
    pointer-events: none;
}

/* Depth classes */
.depth-far {
    filter: blur(2em) saturate(0.5);
    opacity: 0.45;
}

.depth-midfar {
    filter: blur(0.8em) saturate(0.7);
    opacity: 0.65;
}

.depth-mid {
    filter: blur(0.25em) saturate(0.85);
    opacity: 0.85;
}

.depth-near {
    filter: blur(0.08em);
    opacity: 0.95;
}

/* ═══════════════════════
   TERRAIN (ground layers in each zone — generated by JS)
   ═══════════════════════ */
.terrain {
    position: absolute;
    border-radius: 50%;
    transition: background 5s var(--ease);
}

.ground-fill {
    position: absolute;
    width: 120%;
    height: 8em;
    bottom: 0;
    left: -10%;
    background: hsla(var(--land-h), var(--land-s), var(--land-l), 0.95);
    filter: blur(0.15em);
    transition: background 5s var(--ease);
}

/* ═══════════════════════
   STARS (positioned by astrometry engine)
   ═══════════════════════ */
.star {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: twinkle var(--twinkle-dur, 3s) var(--ease) infinite alternate;
}

@keyframes twinkle {
    0% {
        opacity: 0.2;
        transform: translate(-50%, -50%) scale(0.8);
    }

    100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

/* ═══════════════════════
   PLANETS
   ═══════════════════════ */
.planet {
    position: absolute;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 0.8em 0.2em var(--planet-color);
    background: var(--planet-color);
}

/* ═══════════════════════
   CLOUDS
   ═══════════════════════ */
.cloud {
    position: absolute;
    border-radius: 50%;
    filter: blur(3em);
    mix-blend-mode: screen;
    animation: drift var(--cl-d, 70s) linear infinite;
    animation-delay: var(--cl-dl, 0s);
    transition: opacity 5s var(--ease);
}

@keyframes drift {
    0% {
        transform: translateX(-35em);
    }

    100% {
        transform: translateX(130em);
    }
}

/* ═══════════════════════
   TREE SYSTEM
   ═══════════════════════ */
.tree-asset {
    position: absolute;
    transform-origin: bottom center;
    animation: sway var(--wind-dur) var(--ease) infinite alternate;
    animation-delay: var(--tree-dl, 0s);
}

.tree-trunk {
    position: relative;
    border-radius: 0.8em 0.8em 0.3em 0.3em;
    background: linear-gradient(90deg, var(--bark-d), var(--bark-l) 35%, var(--bark-l) 65%, var(--bark-d));
    transform-origin: bottom center;
}

.branch-seg {
    position: absolute;
    left: 50%;
    transform: translateX(-50%) rotate(var(--rot, 0deg));
    transform-origin: bottom center;
    border-radius: 0.3em;
    background: linear-gradient(90deg, var(--bark-d), var(--bark-l) 40%, var(--bark-d));
    transition: background 4s var(--ease);
}

.leaf-cluster {
    position: absolute;
    pointer-events: none;
}

.leaf {
    position: absolute;
    border-radius: 55% 25% 55% 25%;
    background: hsl(calc(var(--veg-hue) + var(--lh, 0)),
            var(--veg-sat),
            calc(var(--veg-l) + var(--ll, 0) * 1%));
    opacity: var(--veg-o);
    filter: blur(0.12em);
    box-shadow: 0 0 0.5em 0.1em hsla(var(--veg-hue), var(--veg-sat), calc(var(--veg-l) + 12%), calc(var(--veg-o) * 0.1));
    animation: leaf-breathe var(--lb-d, 9s) var(--ease) infinite alternate;
    animation-delay: var(--lb-dl, 0s);
    transition: background 4s var(--ease), opacity 4s var(--ease);
}

@keyframes leaf-breathe {
    0% {
        transform: var(--ltf) scale(0.95);
        opacity: calc(var(--veg-o) * 0.85);
    }

    100% {
        transform: var(--ltf) scale(1.05);
        opacity: var(--veg-o);
    }
}

/* ═══════════════════════
   BUSHES
   ═══════════════════════ */
.bush-group {
    position: absolute;
    transform-origin: bottom center;
    animation: sway var(--wind-dur) var(--ease) infinite alternate;
}

.bush-form {
    position: absolute;
    border-radius: 50%;
    background: hsla(var(--veg-hue), var(--veg-sat), var(--veg-l), var(--veg-o));
    filter: blur(0.2em);
    box-shadow:
        0 0 1em 0.5em hsla(var(--veg-hue), var(--veg-sat), var(--veg-l), var(--veg-o)),
        inset -1em -1em 2em rgba(0, 0, 0, 0.3);
    transition: background 4s var(--ease);
}

/* ═══════════════════════
   GRASS
   ═══════════════════════ */
.grass-tuft {
    position: absolute;
    transform-origin: bottom center;
    animation: sway var(--wind-dur) var(--ease) infinite alternate;
}

.grass-blade {
    position: absolute;
    bottom: 0;
    width: 0.22em;
    border-radius: 0.12em 0.12em 0 0;
    background: linear-gradient(to top,
            hsla(var(--veg-hue), var(--veg-sat), calc(var(--veg-l) - 4%), var(--veg-o)),
            hsla(var(--veg-hue), var(--veg-sat), calc(var(--veg-l) + 6%), calc(var(--veg-o) * 0.7)));
    filter: blur(0.06em);
    transform-origin: bottom center;
    box-shadow: 0 0 0.4em hsla(var(--veg-hue), var(--veg-sat), calc(var(--veg-l) + 10%), calc(var(--veg-o) * 0.06));
    transition: background 4s var(--ease);
}

/* ═══════════════════════
   ROCKS
   ═══════════════════════ */
.rock {
    position: absolute;
    border-radius: 40% 50% 45% 55%;
    background: hsla(var(--land-h), 8%, calc(var(--land-l) + 6%), 0.7);
    filter: blur(0.1em);
    box-shadow: inset -0.3em -0.3em 0.5em rgba(0, 0, 0, 0.3);
}

/* ═══════════════════════
   BLOSSOMS (spring flowers)
   ═══════════════════════ */
.blossom {
    position: absolute;
    border-radius: 50%;
    filter: blur(0.15em);
    box-shadow: 0 0 0.5em rgba(255, 230, 220, 0.2);
    animation: leaf-breathe var(--lb-d, 8s) var(--ease) infinite alternate;
}

.blossom-cluster {
    mix-blend-mode: screen;
}

/* ═══════════════════════
   GROUND PATCHES (mulch/bare earth)
   ═══════════════════════ */
.ground-patch {
    position: absolute;
    border-radius: 50%;
    background: hsla(var(--land-h), calc(var(--land-s) + 5%), calc(var(--land-l) + 3%), 0.4);
    filter: blur(0.3em);
}

/* ═══════════════════════
   PINE TREES
   ═══════════════════════ */
.pine-trunk {
    position: absolute;
    background: linear-gradient(45deg, #0a0d08, #151a10, #0a0d08);
    border-radius: 0.3em 0.3em 0 0;
    transform-origin: bottom center;
    animation: sway var(--wind-dur) var(--ease) infinite alternate;
}

.pine-tier {
    position: absolute;
    background: hsla(var(--veg-hue), var(--veg-sat), calc(var(--veg-l) - 5%), var(--veg-o));
    clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
    filter: blur(0.15em);
    transition: background 4s var(--ease);
}

/* ═══════════════════════
   PALM TREES
   ═══════════════════════ */
.palm-trunk {
    position: absolute;
    background: linear-gradient(90deg, #3a2e24, #544536, #3a2e24);
    border-radius: 20% 20% 0 0;
    transform-origin: bottom center;
    animation: sway var(--wind-dur) var(--ease) infinite alternate;
}

.palm-frond {
    position: absolute;
    background: hsla(var(--veg-hue), var(--veg-sat), var(--veg-l), var(--veg-o));
    border-radius: 50% 100% 0 0;
    box-shadow: inset 0 -0.5em 1em rgba(0, 0, 0, 0.3);
    transform-origin: bottom left;
}

/* ═══════════════════════
   ROLLING HILLS
   ═══════════════════════ */
.hill {
    position: absolute;
    border-radius: 50% 50% 0 0;
    /* Diffuse sky-colored shadow to soften the dome edge into the atmosphere */
    box-shadow: 5vw -1vh 5vh 1vh var(--sky-bot);
    /* Fade the left edge and bottom edge to transparent */
    -webkit-mask-image:
        linear-gradient(to right, transparent 0%, black 20%, black 100%),
        linear-gradient(to top, transparent 0%, black 15%, black 100%);
    -webkit-mask-composite: destination-in;
    mask-image:
        linear-gradient(to right, transparent 0%, black 20%, black 100%),
        linear-gradient(to top, transparent 0%, black 15%, black 100%);
    mask-composite: intersect;
}

/* ═══════════════════════
   MOUNTAINS
   ═══════════════════════ */
.mountain-wrapper {
    position: absolute;
    filter: blur(0.3em);
    /* Softens the sharp peaks */
    opacity: 0.85;
    /* Atmospheric perspective */
    -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 0) 100%);
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 0) 100%);
}

.mountain {
    width: 100%;
    height: 100%;
    /* Keep solid. Use blur and atmospheric tinting for depth, NOT transparency */
    background: linear-gradient(to bottom, #88a2b5 0%, var(--sky-bot) 100%);
    clip-path: polygon(50% 0%, 100% 100%, 0% 100%);
}

.mountain-snow {
    background: linear-gradient(to bottom, #ffffff 0%, #ffffff 25%, #88a2b5 60%, var(--sky-bot) 100%);
}

/* ═══════════════════════
   WATER / OCEAN
   ═══════════════════════ */
.water {
    position: absolute;
    width: 120%;
    left: -10%;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.05), rgba(0, 50, 100, 0.3));
    box-shadow: inset 0 1em 2em rgba(255, 255, 255, 0.1);
    filter: blur(0.3em);
    /* Fade the top edge into the mist seamlessly */
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 100%);
}

/* ═══════════════════════
   CELESTIAL BODIES
   ═══════════════════════ */
.celestial {
    position: absolute;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: left 2s var(--ease), top 2s var(--ease);
}

.sun {
    width: 15em;
    height: 15em;
    background: radial-gradient(circle,
            hsla(40, 100%, 90%, 1) 0%,
            hsla(35, 90%, 75%, 0.6) 20%,
            transparent 60%);
    filter: blur(2em);
    box-shadow: 0 0 30em 10em hsla(35, 100%, 70%, 0.3);
}

/* ═══════════════════════
   REALISTIC MOON PHASES
   ═══════════════════════ */
.moon {
    width: 8em;
    height: 8em;
    background: #dcdde1;
    /* Solid light side */
    border-radius: 50%;
    box-shadow: 0 0 var(--glow-spread, 3em) var(--glow-size, 0.5em) rgba(220, 230, 255, var(--glow-alpha, 0.15));
    overflow: hidden;
    position: absolute;
    transform: translate(-50%, -50%) rotate(var(--moon-tilt, -15deg));
}

/* The dark earthshine hemisphere */
.moon::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 50%;
    background: #1a202c;
    /* Solid dark side */
    left: var(--hemisphere-pos, 0%);
}

/* The dynamic 3D terminator flap */
.moon::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    border-radius: 50%;
    background: var(--terminator-color);
    transform: scaleX(var(--phase-scale, 1));
}

/* ═══════════════════════
   FLOCK & BIRDS (CSS-driven)
   ═══════════════════════ */
.flock {
    position: absolute;
    top: 0;
    left: -20vw;
    width: 15em;
    height: 10em;
    z-index: 40;
    pointer-events: none;
    animation:
        flockFlyX var(--flock-speed, 15s) linear forwards,
        flockFlyY var(--flock-wave, 5s) ease-in-out forwards;
}

/* ── Organic Bird Anatomy ── */
.bird {
    position: absolute;
    will-change: transform;
    animation: bird-bob var(--bob-speed, 2s) ease-in-out infinite alternate;
}

.bird-body {
    width: 1.2em;
    height: 0.3em;
    background: var(--bird-c, #111);
    border-radius: 50%;
    position: absolute;
    top: 0;
    left: 0;
}

/* Tapered, swept-back wings */
.wing {
    width: 0.8em;
    height: 1.2em;
    background: var(--bird-c, #111);
    position: absolute;
    top: 0.1em;
    left: 0.4em;
    /* Shifted to center of the bird's body */
    transform-origin: top center;
    clip-path: polygon(0 0, 100% 0, 50% 100%);
    transform: scaleY(1) rotate(var(--w-rot));
    animation: wingFlap var(--flap-speed, 0.4s) infinite alternate cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* Far wing (swept back further for 3D perspective) */
.wing-l {
    --w-rot: 65deg;
    z-index: -1;
    opacity: 0.7;
    /* Pushes it visually into the background */
}

/* Near wing */
.wing-r {
    --w-rot: 45deg;
    z-index: 1;
}

/* Organic Coasting State */
.bird.coasting .wing {
    animation: none;
    /* Squish the Y scale to simulate flat, locked wings */
    transform: scaleY(0.15) rotate(var(--w-rot));
    transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

@keyframes wingFlap {
    0% {
        /* Downstroke */
        transform: scaleY(1) rotate(var(--w-rot));
    }

    100% {
        /* Upstroke */
        transform: scaleY(-0.6) rotate(var(--w-rot));
    }
}

/* Linear forward movement */
@keyframes flockFlyX {
    0% {
        transform: translateX(-20vw);
    }

    100% {
        transform: translateX(120vw);
    }
}

/* Organic Undulation (Swoop, Coast, Climb, Dive) */
@keyframes flockFlyY {
    0% {
        margin-top: 0;
    }

    20% {
        margin-top: 15vh;
        animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
    }

    /* Dive */
    45% {
        margin-top: 5vh;
    }

    /* Climb */
    70% {
        margin-top: 8vh;
        animation-timing-function: ease-in;
    }

    /* Coasting dip */
    100% {
        margin-top: -10vh;
    }

    /* Fly up and away */
}

@keyframes bird-bob {
    0% {
        transform: translateY(-0.5em);
    }

    100% {
        transform: translateY(0.5em);
    }
}



/* ═══════════════════════
   PRECIPITATION
   ═══════════════════════ */
.rain-stroke {
    position: absolute;
    width: 0.25em;
    border-radius: 50%;
    background: linear-gradient(to bottom, transparent, hsla(210, 30%, 75%, 0.12), hsla(210, 25%, 65%, 0.06));
    filter: blur(0.3em);
    animation: rain-fall var(--rf-d, 1.8s) linear forwards;
}

.snow-dot {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, hsla(210, 15%, 95%, 0.14), transparent);
    filter: blur(0.2em);
    animation: snow-fall var(--sf-d, 7s) linear forwards;
}

@keyframes rain-fall {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    8% {
        opacity: 0.15;
    }

    85% {
        opacity: 0.08;
    }

    100% {
        transform: translateY(108em) translateX(var(--rf-dx, 1em));
        opacity: 0;
    }
}

@keyframes snow-fall {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    8% {
        opacity: 0.12;
    }

    50% {
        transform: translateY(54em) translateX(var(--sf-dx, 3em));
    }

    85% {
        opacity: 0.05;
    }

    100% {
        transform: translateY(108em) translateX(var(--sf-dx2, 6em));
        opacity: 0;
    }
}

/* ═══════════════════════
   FOG
   ═══════════════════════ */
.fog-band {
    position: absolute;
    width: 220%;
    height: 16em;
    z-index: 45;
    opacity: 0;
    filter: blur(3.5em);
    background: linear-gradient(90deg,
            transparent, rgba(180, 190, 210, 0.05) 30%,
            rgba(180, 190, 210, 0.08) 50%, rgba(180, 190, 210, 0.05) 70%, transparent);
    animation: fog-drift var(--fg-d, 50s) linear infinite;
    transition: opacity 5s var(--ease);
}

#fog-1 {
    bottom: 30%;
    --fg-d: 48s;
    animation-delay: -16s;
}

#fog-2 {
    bottom: 35%;
    --fg-d: 65s;
    animation-delay: -35s;
}

#fog-3 {
    bottom: 27%;
    --fg-d: 55s;
    animation-delay: -7s;
}

@keyframes fog-drift {
    0% {
        transform: translateX(-55%);
    }

    100% {
        transform: translateX(0%);
    }
}

/* ═══════════════════════
   GRAIN (Agnes Martin)
   ═══════════════════════ */
#grain {
    position: absolute;
    inset: 0;
    z-index: 100;
    pointer-events: none;
    border-radius: 2em;
    opacity: 0.5;
    background:
        repeating-linear-gradient(0deg, transparent, transparent 2.1em,
            rgba(255, 255, 255, 0.01) 2.1em, rgba(255, 255, 255, 0.01) 2.16em),
        repeating-linear-gradient(90deg, transparent, transparent 2.1em,
            rgba(255, 255, 255, 0.01) 2.1em, rgba(255, 255, 255, 0.01) 2.16em);
    mix-blend-mode: overlay;
}

/* ═══════════════════════
   ATMOSPHERE (Miaz)
   ═══════════════════════ */
#atmosphere {
    position: absolute;
    inset: 0;
    z-index: 50;
    pointer-events: none;
    border-radius: 2em;
    background: radial-gradient(ellipse 100% 80% at 50% 45%,
            hsla(30, 15%, 55%, 0.02), transparent 70%);
    mix-blend-mode: soft-light;
}

/* ═══════════════════════
   VIGNETTE
   ═══════════════════════ */
#vignette {
    position: absolute;
    inset: 0;
    z-index: 150;
    pointer-events: none;
    border-radius: 2em;
    box-shadow:
        inset 0 0 18em 4em rgba(0, 0, 0, 0.4),
        inset 0 0 6em 1.5em rgba(0, 0, 0, 0.25);
    transition: box-shadow 5s var(--ease);
}

/* ═══════════════════════
   SIGNATURE
   ═══════════════════════ */
#sig {
    position: absolute;
    bottom: 2.5em;
    right: 3.5em;
    z-index: 160;
    color: rgba(255, 255, 255, 0.05);
    font-size: 0.85em;
    font-weight: 200;
    letter-spacing: 0.4em;
    text-transform: lowercase;
}

/* ═══════════════════════
   SHARED ANIMATIONS
   ═══════════════════════ */
@keyframes sway {
    0% {
        transform: rotate(calc(var(--wind-amp) * -1));
    }

    100% {
        transform: rotate(var(--wind-amp));
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}