/* ============================================================
   aiice.io — graffiti meets ice.
   Palette: translucent-frost, zero warm tones.
   Typography tokens: IBM Plex Mono used only as tertiary accent; IBM Plex Mono" (Google Fonts); IBM Plex Mono` at 13px.
   Motion tokens: IntersectionObserver used minimally; IntersectionObserver` for skeleton-to-content reveal transitions in Sections 2 and 3. Threshold: 0.3. Root margin: "0px". One-shot (unobserve after triggering); IntersectionObserver` triggers.
   Reveal tokens: Each band fills in from left to right using a CSS `clip-path: inset(); Space Grotesk" (Google Fonts); Space Grotesk` 700 (large); Space Grotesk` at `clamp(4rem.
   ============================================================ */

:root {
    --c-wall:        #0d1520;
    --c-wall-2:      #0f1a28;
    --c-frost-1:     #a8e0f6; /* arctic cyan */
    --c-frost-2:     #5eb4d9; /* glacier blue */
    --c-frost-3:     #3a8ab0; /* deep glacier (left face) */
    --c-frost-ice:   #6bb8d4;
    --c-frost-white: #e8f4f8;
    --c-skel-1:      #2a3a4e;
    --c-skel-2:      #3d5570;
    --c-text:        #c8dce8;
    --c-text-dark:   #1b2838;
    --c-coral:       #ff6b6b;
    --c-lime:        #b8ff57;

    --f-tag: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
    --f-body: "Albert Sans", "Inter", "Helvetica Neue", Arial, sans-serif;
    --f-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--f-body);
    background: var(--c-wall);
    color: var(--c-text);
    font-size: 16px;
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--f-mono); font-size: 13px; letter-spacing: 0.06em; color: var(--c-frost-ice); }

/* ============================================================
   GLOBAL: Sections / walls
   ============================================================ */
.wall {
    position: relative;
    width: 100%;
    overflow: hidden;
}
.wall-splash   { min-height: 100vh; background: var(--c-wall); }
.wall-freeze   { min-height: 100vh; background: linear-gradient(180deg, var(--c-wall) 0%, var(--c-wall-2) 100%); padding: 100px 0 120px; }
.wall-rabbit   { min-height: 150vh; background: var(--c-wall); padding: 120px 0 140px; }
.wall-tag      { min-height: 100vh; background: var(--c-wall); padding: 90px 0 0; }

/* ============================================================
   SKELETON SHIMMER (permanent design motif)
   ============================================================ */
@keyframes shimmer {
    0%   { background-position: -400px 0; }
    100% { background-position: 400px 0; }
}

.skeleton-line,
.skeleton-block {
    display: block;
    height: 12px;
    margin: 14px 0;
    border-radius: 3px;
    background: linear-gradient(90deg,
        var(--c-skel-1) 0%,
        var(--c-skel-2) 40%,
        var(--c-skel-1) 80%);
    background-size: 400px 100%;
    animation: shimmer 2s linear infinite;
}
.skeleton-block { height: 80px; border-radius: 6px; margin: 22px 0; }

.skeleton-bg {
    position: absolute;
    border-radius: 6px;
    opacity: 0.35;
    pointer-events: none;
    background: linear-gradient(90deg,
        rgba(42,58,78,0.4) 0%,
        rgba(61,85,112,0.55) 45%,
        rgba(42,58,78,0.4) 90%);
    background-size: 400px 100%;
    animation: shimmer 2.4s linear infinite;
}
.skeleton-bg-1 { top: 18%; left: -4%; width: 28%; height: 60px; }
.skeleton-bg-2 { top: 72%; left: 38%; width: 22%; height: 40px; opacity: 0.25; }
.skeleton-bg-3 { top: 86%; left: 2%; width: 16%; height: 30px; opacity: 0.3; }

/* ============================================================
   SECTION 1 — THE SPLASH WALL
   ============================================================ */
.splash-composition {
    position: absolute;
    top: 50%;
    left: 6%;
    width: 62%;
    transform: translateY(-50%);
    z-index: 2;
}

.logotype {
    position: relative;
    display: block;
    font-family: var(--f-tag);
    font-weight: 700;
    font-size: clamp(4rem, 12vw, 9rem);
    line-height: 0.95;
    letter-spacing: -0.04em;
    text-transform: lowercase;
    color: var(--c-frost-1);
    white-space: nowrap;
    padding-left: 20px;
}

.logotype .letter {
    display: inline-block;
    position: relative;
    transform: rotate(var(--rot, 0deg)) translate(var(--ox, 0), var(--oy, 0));
    text-shadow:
        2px 2px 0 var(--c-frost-2),
        4px 4px 0 var(--c-frost-3),
        6px 6px 8px rgba(13, 21, 32, 0.8);
    animation: letter-drift 12s ease-in-out infinite;
}
.logotype .letter-i1 { animation-delay: -2s; }
.logotype .letter-i2 { animation-delay: -4s; }
.logotype .letter-c  { animation-delay: -6s; }
.logotype .letter-e  { animation-delay: -1s; }
.logotype .letter-i3 { animation-delay: -3s; }
.logotype .letter-o  { animation-delay: -5s; }

@keyframes letter-drift {
    0%, 100% { transform: rotate(var(--rot, 0deg)) translate(var(--ox, 0), var(--oy, 0)); }
    50%      { transform: rotate(calc(var(--rot, 0deg) + 1deg)) translate(calc(var(--ox, 0px) + 2px), calc(var(--oy, 0px) - 2px)); }
}

/* spray spatter around the tag */
.splash-spatter {
    position: absolute;
    top: -40px;
    left: -60px;
    width: 140%;
    height: 140%;
    pointer-events: none;
}
.splash-spatter::before,
.splash-spatter::after {
    content: "";
    position: absolute;
    width: 3px; height: 3px;
    border-radius: 50%;
    background: var(--c-frost-1);
    box-shadow:
        80px 40px 0 0 rgba(168,224,246,0.7),
        140px 18px 0 0 rgba(168,224,246,0.4),
        200px 110px 0 0 rgba(168,224,246,0.5),
        280px 62px 0 0 rgba(168,224,246,0.3),
        340px 140px 0 0 rgba(168,224,246,0.6),
        420px 30px 0 0 rgba(168,224,246,0.35),
        480px 170px 0 0 rgba(168,224,246,0.5),
        560px 90px 0 0 rgba(168,224,246,0.4),
        640px 220px 0 0 rgba(168,224,246,0.55),
        720px 150px 0 0 rgba(168,224,246,0.3),
        60px 220px 0 0 rgba(168,224,246,0.45),
        180px 260px 0 0 rgba(168,224,246,0.3),
        320px 280px 0 0 rgba(168,224,246,0.4),
        460px 300px 0 0 rgba(168,224,246,0.3),
        620px 260px 0 0 rgba(168,224,246,0.45),
        40px 340px 0 0 rgba(168,224,246,0.35),
        240px 360px 0 0 rgba(168,224,246,0.3),
        420px 380px 0 0 rgba(168,224,246,0.5),
        600px 340px 0 0 rgba(168,224,246,0.3),
        780px 400px 0 0 rgba(168,224,246,0.4);
}
.splash-spatter::after {
    top: 40px; left: 60px;
    background: var(--c-coral);
    box-shadow:
        30px 200px 0 0 rgba(255,107,107,0.5),
        170px 100px 0 0 rgba(184,255,87,0.5),
        320px 180px 0 0 rgba(255,107,107,0.3),
        510px 40px 0 0 rgba(184,255,87,0.35),
        650px 280px 0 0 rgba(255,107,107,0.45),
        780px 120px 0 0 rgba(184,255,87,0.4),
        90px 380px 0 0 rgba(255,107,107,0.3),
        250px 420px 0 0 rgba(184,255,87,0.35),
        500px 440px 0 0 rgba(255,107,107,0.3);
}

/* drips */
.drips {
    position: absolute;
    top: calc(100% - 20px);
    left: 0;
    width: 100%;
    height: 140px;
    pointer-events: none;
}
.drip {
    position: absolute;
    top: 0;
    left: var(--left);
    width: var(--w, 5px);
    height: 0;
    background: var(--c);
    border-radius: 0 0 4px 4px;
    animation: drip-fall 1.6s cubic-bezier(0.22, 0.61, 0.36, 1) var(--d, 0s) forwards;
    box-shadow: 0 0 8px color-mix(in srgb, var(--c) 60%, transparent);
}
.drip::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 50%;
    width: calc(var(--w, 5px) + 3px);
    height: calc(var(--w, 5px) + 3px);
    transform: translateX(-50%);
    border-radius: 50%;
    background: var(--c);
    opacity: 0.9;
}
@keyframes drip-fall {
    0%   { height: 0; opacity: 0; }
    10%  { opacity: 1; }
    100% { height: var(--h, 60px); opacity: 1; }
}

.splash-machine-line {
    position: absolute;
    bottom: -60px;
    left: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.mono-cursor {
    display: inline-block;
    width: 9px;
    height: 14px;
    background: var(--c-frost-ice);
    animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* frost strip right edge */
.frost-strip {
    position: absolute;
    top: 0;
    right: 0;
    width: 30%;
    height: 100%;
    background: rgba(168, 224, 246, 0.05);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-left: 1px solid rgba(168, 224, 246, 0.12);
    z-index: 1;
}
.frost-strip-inner {
    position: absolute;
    top: 50%;
    left: 30px;
    right: 30px;
    transform: translateY(-50%);
}

/* ============================================================
   FLOATING ELEMENTS (shared)
   ============================================================ */
.floater {
    position: absolute;
    top: var(--top);
    left: var(--left);
    opacity: var(--op, 0.3);
    pointer-events: none;
    animation: float-drift var(--dur, 25s) ease-in-out var(--delay, 0s) infinite;
}
@keyframes float-drift {
    0%, 100% { transform: translate(0, 0) rotate(0deg) scale(var(--scale, 1)); }
    25%      { transform: translate(12px, -18px) rotate(8deg) scale(var(--scale, 1)); }
    50%      { transform: translate(-8px, -32px) rotate(-4deg) scale(var(--scale, 1)); }
    75%      { transform: translate(-16px, -12px) rotate(6deg) scale(var(--scale, 1)); }
}

.floater.cube {
    width: 28px; height: 28px;
    background:
        linear-gradient(135deg, var(--c-frost-1) 0%, var(--c-frost-1) 50%, transparent 50%),
        linear-gradient(45deg, var(--c-frost-3) 0%, var(--c-frost-3) 50%, var(--c-frost-2) 50%);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
}
.floater.diamond {
    width: 18px; height: 18px;
    background: var(--c-frost-2);
    transform: rotate(45deg) scale(var(--scale, 1));
}
.floater.circle {
    width: 22px; height: 22px;
    border-radius: 50%;
    background: rgba(168, 224, 246, 0.12);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border: 1px solid rgba(168, 224, 246, 0.2);
}
.floater.splinter {
    width: var(--w, 40px);
    height: 1px;
    background: var(--c-frost-1);
    opacity: var(--op, 0.3);
}

/* ============================================================
   SECTION 2 — THE FREEZE FRAME
   ============================================================ */
.freeze-eyebrow,
.rabbit-eyebrow,
.tag-eyebrow {
    display: block;
    padding: 0 8%;
    margin-bottom: 80px;
    text-transform: uppercase;
    color: var(--c-frost-ice);
}
.tag-eyebrow { margin-bottom: 40px; }

.freeze-stack {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.freeze-block {
    position: relative;
    width: 380px;
    margin-bottom: 120px;
    margin-left: var(--offset-left, 15%);
    background: rgba(168, 224, 246, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(168, 224, 246, 0.12);
    border-radius: 8px;
    padding: 32px;
    min-height: 360px;
}

.freeze-block .skeleton-overlay {
    position: absolute;
    inset: 32px;
    opacity: 1;
    transition: opacity 800ms ease;
}
.freeze-block .freeze-content {
    position: relative;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 800ms ease var(--stagger, 0ms),
                transform 800ms ease var(--stagger, 0ms);
}
.freeze-block.is-revealed .skeleton-overlay {
    opacity: 0;
    pointer-events: none;
    transition-delay: var(--stagger, 0ms);
}
.freeze-block.is-revealed .freeze-content {
    opacity: 1;
    transform: translateY(0);
}

.freeze-meta {
    margin-top: 16px;
    margin-bottom: 10px;
    color: var(--c-frost-ice);
    text-transform: uppercase;
}
.freeze-title {
    font-family: var(--f-tag);
    font-weight: 700;
    font-size: 2rem;
    letter-spacing: -0.03em;
    color: var(--c-frost-1);
    margin-bottom: 14px;
    text-shadow:
        1px 1px 0 var(--c-frost-2),
        2px 2px 0 var(--c-frost-3);
}
.freeze-body {
    color: var(--c-text);
    font-size: 15px;
    line-height: 1.65;
}

/* ============================================================
   ISOMETRIC CSS ICONS
   ============================================================ */
.iso {
    position: relative;
    width: 100%;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}
.iso.small { height: 120px; }

.iso-cubes { perspective: 400px; }

.iso-cube {
    position: absolute;
    width: 50px;
    height: 50px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) translate(var(--tx, 0), var(--ty, 0));
    background:
        /* top face */
        linear-gradient(var(--c-frost-1), var(--c-frost-1)) top/100% 50% no-repeat;
    clip-path: polygon(50% 0%, 100% 28%, 100% 72%, 50% 100%, 0% 72%, 0% 28%);
    /* 3-face shading using layered gradients */
    background:
        linear-gradient(90deg,
            var(--c-frost-3) 0%, var(--c-frost-3) 50%,
            var(--c-frost-2) 50%, var(--c-frost-2) 100%);
}
.iso-cube::before {
    content: "";
    position: absolute;
    inset: 0;
    clip-path: polygon(50% 0%, 100% 28%, 50% 50%, 0% 28%);
    background: var(--c-frost-1);
}
.iso-cube::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(13, 21, 32, 0.25);
    clip-path: polygon(50% 0%, 100% 28%, 100% 72%, 50% 100%, 0% 72%, 0% 28%);
    pointer-events: none;
}

/* iso prisms — triangular, pointing right */
.iso-prism {
    position: absolute;
    width: 46px;
    height: 52px;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) translate(var(--tx, 0), var(--ty, 0));
    clip-path: polygon(0% 25%, 50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%);
    background: linear-gradient(90deg,
        var(--c-frost-3) 0%, var(--c-frost-3) 50%,
        var(--c-frost-2) 50%, var(--c-frost-2) 100%);
}
.iso-prism::before {
    content: "";
    position: absolute;
    inset: 0;
    clip-path: polygon(0% 25%, 50% 0%, 100% 25%, 50% 50%);
    background: var(--c-frost-1);
}

/* crystal formation — shards */
.iso-crystal { align-items: flex-end; }
.crystal-shard {
    position: relative;
    width: 18px;
    height: var(--h, 80px);
    margin: 0 4px;
    transform: translateX(var(--tx, 0)) rotate(var(--rot, 0));
    clip-path: polygon(50% 0%, 100% 20%, 100% 100%, 0% 100%, 0% 20%);
    background: linear-gradient(90deg,
        var(--c-frost-3) 0%, var(--c-frost-3) 50%,
        var(--c-frost-2) 50%, var(--c-frost-2) 100%);
}
.crystal-shard::before {
    content: "";
    position: absolute;
    inset: 0;
    clip-path: polygon(50% 0%, 100% 20%, 50% 40%, 0% 20%);
    background: var(--c-frost-1);
}
.crystal-shard.tall {
    width: 22px;
}

/* ============================================================
   SECTION 3 — THE RABBIT HOLE
   ============================================================ */
.bands {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 8%;
    position: relative;
}

.band {
    position: relative;
    margin: 28px 0;
    overflow: hidden;
}
.band-slim  .band-fill { min-height: 48px; padding: 14px 20px; display: flex; align-items: center; }
.band-med   .band-fill { min-height: 160px; padding: 28px 32px; }
.band-tall  .band-fill { min-height: 300px; padding: 40px 40px; }

.band-fill {
    position: relative;
    background: rgba(168, 224, 246, 0.04);
    border: 1px solid rgba(168, 224, 246, 0.1);
    border-radius: 4px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    clip-path: inset(0 100% 0 0);
    transition: clip-path 700ms cubic-bezier(0.65, 0, 0.35, 1);
}

.band.is-revealed .band-fill {
    clip-path: inset(0 0 0 0);
}

.band-shout-coral .band-fill,
.band-shout-lime  .band-fill {
    min-height: 110px;
    padding: 28px 40px;
    display: flex;
    align-items: center;
    background: rgba(13, 21, 32, 0.4);
    border: 1px solid rgba(168, 224, 246, 0.06);
}

.shout {
    font-family: var(--f-tag);
    font-weight: 700;
    font-size: clamp(2.4rem, 5.5vw, 4.5rem);
    letter-spacing: -0.04em;
    text-transform: uppercase;
    color: var(--c-coral);
    text-shadow:
        2px 2px 0 rgba(13, 21, 32, 0.8),
        4px 4px 0 rgba(61, 85, 112, 0.5);
    line-height: 1;
}
.shout-lime { color: var(--c-lime); }

.band-split {
    display: flex;
    align-items: center;
    gap: 36px;
}
.band-iso { flex: 0 0 180px; }
.band-text { flex: 1; }
.band-paragraph {
    color: var(--c-text);
    margin-bottom: 14px;
    font-size: 16px;
}
.band-paragraph:last-child { margin-bottom: 0; }

.band-slim .mono { color: var(--c-frost-ice); }

/* ============================================================
   SECTION 4 — THE TAG WALL
   ============================================================ */
.tag-cloud {
    position: relative;
    width: 100%;
    height: 80vh;
    min-height: 620px;
}

.tag {
    position: absolute;
    top: var(--top);
    left: var(--left);
    padding: 14px 24px;
    background: rgba(168, 224, 246, 0.07);
    border: 1px solid rgba(168, 224, 246, 0.14);
    border-radius: 12px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    font-family: var(--f-tag);
    font-weight: 700;
    font-size: clamp(1.2rem, 2.5vw, 2.1rem);
    text-transform: lowercase;
    letter-spacing: -0.03em;
    color: var(--c-frost-1);
    transform: scale(var(--scale, 1)) rotate(var(--rot, 0deg));
    opacity: var(--op, 0.85);
    text-shadow:
        1px 1px 0 var(--c-frost-2),
        2px 2px 0 var(--c-frost-3);
    animation: tag-drift var(--dur, 24s) ease-in-out var(--delay, 0s) infinite;
    white-space: nowrap;
}

@keyframes tag-drift {
    0%, 100% {
        transform: scale(var(--scale, 1)) rotate(var(--rot, 0deg)) translate(0, 0);
    }
    50% {
        transform: scale(var(--scale, 1)) rotate(calc(var(--rot, 0deg) + 1deg)) translate(var(--dx, 10px), var(--dy, -8px));
    }
}

.tag-vignette {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 140px;
    background: linear-gradient(180deg, rgba(13, 21, 32, 0) 0%, var(--c-wall) 100%);
    pointer-events: none;
}

.tag-sig {
    position: relative;
    text-align: right;
    padding: 20px 8% 40px;
    color: var(--c-frost-ice);
    opacity: 0.65;
    z-index: 2;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .splash-composition { width: 86%; left: 4%; }
    .frost-strip { width: 0; border: none; }

    .freeze-block {
        width: 90%;
        margin-left: 5% !important;
    }
    .freeze-eyebrow, .rabbit-eyebrow, .tag-eyebrow { padding: 0 5%; }

    .band-split { flex-direction: column; gap: 20px; align-items: flex-start; }
    .band-iso { flex: 0 0 auto; width: 100%; }

    .shout { font-size: clamp(2rem, 9vw, 3.2rem); }

    .tag-cloud { height: 120vh; }
}

@media (max-width: 560px) {
    .logotype { font-size: clamp(3rem, 16vw, 5rem); }
    .band-tall .band-fill { min-height: 240px; padding: 24px; }
    .band-med .band-fill { padding: 20px; }
}