/* blockchain.day — Generative Art Background */
/* Palette: #08090d, #141828, #d4a843, #22c55e, #2a3654, #4a90d9, #e2e8f0, #f59e0b */

:root {
    --void: #08090d;
    --surface: #141828;
    --gold: #d4a843;
    --green: #22c55e;
    --edge: #2a3654;
    --glow: #4a90d9;
    --text: #e2e8f0;
    --amber: #f59e0b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--void);
    color: var(--text);
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 400;
    line-height: 1.65;
    overflow-x: hidden;
}

/* ===== Generative Art Background Canvas ===== */
#bgCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Block Counter (fixed header) ===== */
.block-counter {
    position: fixed;
    top: 1rem;
    right: 1.5rem;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--gold);
    z-index: 100;
    letter-spacing: 0.08em;
    background: rgba(8, 9, 13, 0.8);
    padding: 0.4rem 0.8rem;
    border: 1px solid rgba(212, 168, 67, 0.2);
    border-radius: 2px;
}

/* ===== Chain Axis (fixed vertical center line) ===== */
.chain-axis {
    position: fixed;
    left: 50%;
    top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, transparent 5%, var(--gold) 15%, var(--gold) 85%, transparent 95%);
    opacity: 0.15;
    z-index: 1;
    transform: translateX(-50%);
    transition: opacity 0.6s ease, box-shadow 0.6s ease;
}

.chain-axis.pulse {
    opacity: 0.35;
    box-shadow: 0 0 12px rgba(212, 168, 67, 0.25);
}

.chain-axis-start {
    width: 2px;
    height: 60px;
    background: var(--gold);
    margin: 0 auto;
    opacity: 0.4;
}

/* ===== Axis Nodes ===== */
.axis-node {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--gold);
    margin: 0 auto;
    position: relative;
    z-index: 2;
    box-shadow: 0 0 10px rgba(212, 168, 67, 0.3);
    animation: nodePulse 3s ease-in-out infinite;
}

@keyframes nodePulse {
    0%, 100% { box-shadow: 0 0 8px rgba(212, 168, 67, 0.2); }
    50% { box-shadow: 0 0 20px rgba(212, 168, 67, 0.5); }
}

/* ===== Chain Sections ===== */
.chain-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    position: relative;
    z-index: 2;
}

/* ===== Genesis Cube ===== */
.hero-section {
    min-height: 100vh;
}

.cube-container {
    perspective: 800px;
    width: 200px;
    height: 200px;
    margin-bottom: 1.5rem;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    animation: cubeRotate 16s ease-in-out infinite;
}

@keyframes cubeRotate {
    0%   { transform: rotateX(-15deg) rotateY(15deg); }
    25%  { transform: rotateX(-10deg) rotateY(105deg); }
    50%  { transform: rotateX(-20deg) rotateY(195deg); }
    75%  { transform: rotateX(-5deg) rotateY(285deg); }
    100% { transform: rotateX(-15deg) rotateY(375deg); }
}

.cube-face {
    position: absolute;
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 700;
    font-size: 1.2rem;
    text-align: center;
    border: 1px solid var(--gold);
    backface-visibility: hidden;
    opacity: 0;
    animation: faceIlluminate 2s ease forwards;
}

.cube-front  { background: rgba(20, 24, 40, 0.92); color: var(--gold); transform: translateZ(100px); animation-delay: 0.2s; }
.cube-back   { background: rgba(20, 24, 40, 0.85); color: var(--text); transform: rotateY(180deg) translateZ(100px); animation-delay: 0.6s; }
.cube-right  { background: rgba(42, 54, 84, 0.9); color: var(--text); transform: rotateY(90deg) translateZ(100px); animation-delay: 1.0s; }
.cube-left   { background: rgba(42, 54, 84, 0.85); color: var(--glow); transform: rotateY(-90deg) translateZ(100px); animation-delay: 1.4s; }
.cube-top    { background: rgba(20, 24, 40, 0.7); color: var(--glow); transform: rotateX(90deg) translateZ(100px); animation-delay: 1.8s; }
.cube-bottom { background: rgba(8, 9, 13, 0.9); transform: rotateX(-90deg) translateZ(100px); animation-delay: 2.2s; }

@keyframes faceIlluminate {
    0%   { opacity: 0; border-color: transparent; }
    50%  { opacity: 0.5; border-color: rgba(212, 168, 67, 0.3); }
    100% { opacity: 1; border-color: var(--gold); }
}

.cube-label {
    text-shadow: 0 0 10px rgba(212, 168, 67, 0.4);
}

.cube-hash {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.6rem;
    font-weight: 400;
    color: var(--glow);
    word-break: break-all;
    padding: 0.5rem;
    text-shadow: 0 0 6px rgba(74, 144, 217, 0.3);
}

.genesis-label {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--gold);
    letter-spacing: 0.15em;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: labelFadeIn 1.5s ease 3s forwards;
}

@keyframes labelFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ===== Chain Link SVGs ===== */
.chain-link-svg {
    position: absolute;
    width: 200px;
    height: 100px;
    z-index: 1;
    overflow: visible;
}

.chain-link-left {
    right: 50%;
    top: -50px;
}

.chain-link-right {
    left: 50%;
    top: -50px;
}

.chain-link-path {
    fill: none;
    stroke: var(--gold);
    stroke-width: 2;
    opacity: 0.35;
    stroke-dasharray: 300;
    stroke-dashoffset: 300;
    transition: stroke-dashoffset 1.2s ease;
}

.chain-link-path.drawn {
    stroke-dashoffset: 0;
}

.chain-ring {
    fill: none;
    stroke: var(--gold);
    stroke-width: 1.5;
    opacity: 0.4;
}

/* ===== Chain Blocks (content blocks) ===== */
.chain-block {
    position: relative;
    max-width: 420px;
    width: 100%;
}

.block-left { margin-right: 52%; }
.block-right { margin-left: 52%; }

/* Block Stem connecting to axis */
.block-stem {
    position: absolute;
    top: 50%;
    right: -40px;
    width: 40px;
    height: 2px;
    background: var(--gold);
    opacity: 0.35;
    transform-origin: left;
}

.stem-right {
    right: auto;
    left: -40px;
    transform-origin: right;
}

/* Broadcast Lines */
.broadcast-line {
    position: absolute;
    top: 50%;
    height: 1px;
    width: 200px;
    opacity: 0;
    transition: opacity 1.5s ease 0.8s;
}

.broadcast-left {
    left: -200px;
    background: linear-gradient(to left, rgba(74, 144, 217, 0.15), transparent);
}

.broadcast-right {
    right: -200px;
    background: linear-gradient(to right, rgba(74, 144, 217, 0.15), transparent);
}

.mine-in.visible .broadcast-line {
    opacity: 1;
}

/* ===== 3D Block Rendering ===== */
.block-3d {
    position: relative;
    transform: perspective(800px) rotateX(-10deg) rotateY(15deg);
    transform-style: preserve-3d;
}

.block-right .block-3d {
    transform: perspective(800px) rotateX(-10deg) rotateY(-15deg);
}

.block-front {
    background: var(--surface);
    border: 1px solid var(--edge);
    padding: 1.5rem;
    position: relative;
    z-index: 2;
    transition: border-color 0.8s ease, box-shadow 0.8s ease;
}

/* Mining animation: wireframe first, then fill */
.mine-in .block-front {
    background: transparent;
    border-color: rgba(42, 54, 84, 0.3);
}

.mine-in.visible .block-front {
    background: var(--surface);
    border-color: var(--edge);
}

.block-top {
    position: absolute;
    top: -18px;
    left: 5px;
    right: -8px;
    height: 18px;
    background: var(--edge);
    transform: skewX(-8deg);
    z-index: 1;
}

.block-side {
    position: absolute;
    top: -12px;
    right: -14px;
    width: 14px;
    height: calc(100% + 12px);
    background: #1e2a42;
    transform: skewY(-8deg);
    z-index: 1;
}

/* Hash Ribbon */
.hash-ribbon {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--glow);
    background: rgba(74, 144, 217, 0.06);
    padding: 0.35rem 0.6rem;
    margin-bottom: 0.8rem;
    border-left: 2px solid var(--glow);
    overflow: hidden;
}

.hash-val {
    display: inline-block;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.mine-in.visible .hash-val {
    opacity: 1;
}

/* Block Pattern (generative hash fingerprint) */
.block-pattern {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 2px;
    margin-bottom: 0.8rem;
    height: 32px;
    opacity: 0;
    transition: opacity 0.8s ease 0.3s;
}

.mine-in.visible .block-pattern {
    opacity: 1;
}

.pattern-cell {
    border-radius: 1px;
    transition: background 0.4s ease;
}

/* Block Title & Text */
.block-title {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 600;
    font-size: 1.15rem;
    color: var(--text);
    margin-bottom: 0.4rem;
}

.block-text {
    font-size: 0.88rem;
    color: rgba(226, 232, 240, 0.65);
    line-height: 1.65;
    margin-bottom: 0.8rem;
}

/* Validation Checkmarks */
.validation {
    display: flex;
    gap: 0.5rem;
}

.check {
    font-size: 0.75rem;
    color: var(--green);
    background: rgba(34, 197, 94, 0.08);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.4s ease, transform 0.3s ease;
}

.check.validated {
    opacity: 1;
    transform: scale(1);
}

.pending-check {
    color: var(--amber);
    background: rgba(245, 158, 11, 0.08);
}

/* Head block glow */
.block-head .block-front {
    box-shadow: 0 0 30px rgba(74, 144, 217, 0.15), 0 0 60px rgba(74, 144, 217, 0.05);
    border-color: var(--glow);
}

.block-head .block-top {
    background: #2a4a6e;
}

.block-head .block-side {
    background: #234060;
}

/* ===== Fork Section ===== */
.fork-section {
    min-height: 90vh;
}

.fork-label {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 700;
    font-size: 1rem;
    color: var(--amber);
    letter-spacing: 0.12em;
    margin-bottom: 2.5rem;
    text-shadow: 0 0 15px rgba(245, 158, 11, 0.3);
}

.fork-paths {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin-bottom: 2.5rem;
}

.fork-path {
    position: relative;
}

.fork-link-svg {
    width: 100px;
    height: 60px;
    display: block;
    margin: 0 auto 0.5rem;
}

.fork-link-path {
    fill: none;
    stroke-width: 2;
    opacity: 0.4;
}

.confirmed-path { stroke: var(--green); }
.orphaned-path  { stroke: var(--amber); }

.fork-divider {
    display: flex;
    align-items: center;
    padding-top: 3rem;
}

.fork-vs {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 700;
    font-size: 0.7rem;
    color: rgba(226, 232, 240, 0.3);
    letter-spacing: 0.1em;
}

.mini-block {
    padding: 1rem 1.5rem;
    border: 1px solid var(--edge);
    background: var(--surface);
    text-align: center;
    min-width: 140px;
    transition: opacity 1s ease, transform 1s ease;
}

.mini-block.confirmed {
    border-color: var(--green);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.12);
}

.mini-block.pending {
    border-color: var(--amber);
}

.fork-orphaned.resolved .mini-block.pending {
    opacity: 0.15;
    transform: translateY(10px) scale(0.95);
    border-color: rgba(245, 158, 11, 0.2);
}

.mini-hash {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.6rem;
    color: var(--glow);
    display: block;
    margin-bottom: 0.4rem;
}

.mini-pattern {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
    height: 16px;
    margin-bottom: 0.5rem;
}

.mini-status {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 600;
    font-size: 0.68rem;
    letter-spacing: 0.05em;
}

.confirmed .mini-status { color: var(--green); }
.pending .mini-status { color: var(--amber); }

.fork-resolve {
    opacity: 0;
    transform: translateY(5px);
    transition: opacity 1.2s ease, transform 1.2s ease;
}

.fork-resolve.visible {
    opacity: 1;
    transform: translateY(0);
}

.resolve-text {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--green);
    letter-spacing: 0.08em;
    opacity: 0.7;
}

/* ===== Finality ===== */
.finality-section {
    min-height: 90vh;
}

.finality-content {
    max-width: 520px;
    text-align: center;
    position: relative;
}

.finality-hash {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.55rem;
    color: rgba(74, 144, 217, 0.25);
    word-break: break-all;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.finality-text {
    font-size: 1.1rem;
    line-height: 1.85;
    color: rgba(226, 232, 240, 0.75);
    margin-bottom: 2rem;
}

.finality-sig {
    font-family: 'Chakra Petch', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--gold);
    text-shadow: 0 0 12px rgba(212, 168, 67, 0.25);
}

.finality-pulse {
    width: 2px;
    height: 60px;
    background: var(--gold);
    margin: 2rem auto 0;
    opacity: 0.3;
    animation: finalPulse 2.5s ease-in-out infinite;
}

@keyframes finalPulse {
    0%, 100% { opacity: 0.15; height: 50px; }
    50%      { opacity: 0.45; height: 70px; }
}

/* ===== Fade In & Mining Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s ease, transform 1s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mine-in stages: wireframe -> fill -> pattern -> hash -> validate */
.mine-in .block-3d {
    transition: transform 0.8s ease;
}

.mine-in .block-front {
    transition: background 0.8s ease 0.2s, border-color 0.6s ease 0.2s, box-shadow 0.8s ease;
}

.mine-in .block-top,
.mine-in .block-side {
    opacity: 0;
    transition: opacity 0.6s ease 0.4s;
}

.mine-in.visible .block-top,
.mine-in.visible .block-side {
    opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .block-left,
    .block-right {
        margin-left: 5vw;
        margin-right: 5vw;
    }

    .block-stem,
    .stem-right {
        display: none;
    }

    .chain-axis {
        display: none;
    }

    .chain-link-svg {
        display: none;
    }

    .broadcast-line {
        display: none;
    }

    .fork-paths {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }

    .fork-divider {
        padding-top: 0;
    }

    .block-3d,
    .block-right .block-3d {
        transform: none;
    }

    .block-top,
    .block-side {
        display: none;
    }

    .cube-container {
        width: 150px;
        height: 150px;
    }

    .cube-face {
        width: 150px;
        height: 150px;
    }

    .cube-front  { transform: translateZ(75px); }
    .cube-back   { transform: rotateY(180deg) translateZ(75px); }
    .cube-right  { transform: rotateY(90deg) translateZ(75px); }
    .cube-left   { transform: rotateY(-90deg) translateZ(75px); }
    .cube-top    { transform: rotateX(90deg) translateZ(75px); }
    .cube-bottom { transform: rotateX(-90deg) translateZ(75px); }
}