:root {
    --concrete-dark: #1E1E24;
    --asphalt-gray: #2A2A32;
    --tanned-hide: #6B4226;
    --bubblegum-pop: #FF4F9A;
    --electric-banana: #FFE135;
    --slush-ice: #00E5CC;
    --grape-soda: #B24BF3;
    --chalk-white: #F0F0EC;
    --sidewalk-gray: #8B8B95;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background: var(--concrete-dark);
    color: var(--chalk-white);
    font-family: 'Space Mono', monospace;
    font-weight: 400;
    font-size: 1rem;
    line-height: 1.7;
    letter-spacing: 0.02em;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: rgba(255, 79, 154, 0.3);
}

/* Circuit Traces */
.circuit-traces {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.trace-line {
    stroke: var(--slush-ice);
    stroke-width: 0.5;
    stroke-dasharray: 8 4;
    opacity: 0.08;
}

.trace-node {
    opacity: 0;
    animation: node-pulse 4s ease-in-out infinite;
}

.trace-node-pink { fill: var(--bubblegum-pop); animation-delay: 0s; }
.trace-node-cyan { fill: var(--slush-ice); animation-delay: 1s; }
.trace-node-yellow { fill: var(--electric-banana); animation-delay: 2s; }
.trace-node-violet { fill: var(--grape-soda); animation-delay: 0.5s; }

@keyframes node-pulse {
    0%, 100% { opacity: 0.15; r: 3; }
    50% { opacity: 0.35; r: 4; }
}

/* Data Glyphs */
.data-glyph {
    position: fixed;
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    color: var(--sidewalk-gray);
    opacity: 0.2;
    pointer-events: none;
    z-index: 0;
    animation: glyph-rotate 30s linear infinite;
}

@keyframes glyph-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Header Tag Wall */
.tag-wall {
    position: relative;
    z-index: 10;
    padding: clamp(2rem, 5vw, 4rem) clamp(1.5rem, 4vw, 4rem);
    min-height: 15vh;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
}

.tag-title {
    font-family: 'Major Mono Display', monospace;
    font-size: clamp(2rem, 6vw, 5rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--bubblegum-pop);
    line-height: 1;
}

.tag-nav {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.tag-pill {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    color: var(--concrete-dark);
    transition: transform 200ms ease, box-shadow 200ms ease;
}

.tag-pink { background: var(--bubblegum-pop); }
.tag-cyan { background: var(--slush-ice); }
.tag-yellow { background: var(--electric-banana); }
.tag-violet { background: var(--grape-soda); color: var(--chalk-white); }

.tag-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Card Field */
.card-field {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: clamp(1rem, 3vw, 3rem) clamp(1.5rem, 4vw, 4rem);
    max-width: 1200px;
    margin: 0 auto;
}

/* Card Base */
.card {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
}

/* Spray Enter Animation */
.spray-enter {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 400ms ease-out, transform 400ms ease-out;
    transition-delay: calc(var(--spray-delay, 0) * 150ms);
}

.spray-enter.visible {
    opacity: 1;
    transform: scale(1) rotate(var(--card-rotation, 0deg)) translate(var(--card-offset-x, 0px), var(--card-offset-y, 0px));
}

/* Card hover */
.card:not(.card-sticker):hover {
    transform: translateY(-4px) rotate(0deg) !important;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
    z-index: 20;
    transition: transform 200ms ease, box-shadow 200ms ease;
}

/* Tag Card */
.card-tag {
    background: linear-gradient(135deg, var(--bubblegum-pop), var(--grape-soda));
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 200px;
}

.tag-bg-cyan {
    background: linear-gradient(135deg, var(--electric-banana), var(--slush-ice));
}

.tag-bg-yellow {
    background: linear-gradient(135deg, var(--electric-banana), var(--bubblegum-pop));
}

.tag-glyph {
    font-size: 3rem;
    color: var(--concrete-dark);
    opacity: 0.8;
}

/* Throw-up Card */
.card-throwup {
    background: var(--asphalt-gray);
    border: 3px solid var(--bubblegum-pop);
    border-radius: 12px;
    padding: clamp(1.2rem, 2vw, 2rem);
    aspect-ratio: 2 / 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.throwup-alt {
    border-color: var(--slush-ice);
}

/* Piece Card */
.card-piece {
    grid-column: span 2;
    background-color: var(--tanned-hide);
    background-image:
        radial-gradient(circle at 20% 30%, rgba(0,0,0,0.08) 1px, transparent 1px),
        radial-gradient(circle at 70% 60%, rgba(0,0,0,0.06) 1px, transparent 1px),
        radial-gradient(ellipse at 50% 50%, transparent 60%, rgba(0,0,0,0.25));
    background-size: 4px 4px, 6px 6px, 100% 100%;
    padding: clamp(1.5rem, 3vw, 3rem);
    border-bottom: 3px solid var(--bubblegum-pop);
    transition: box-shadow 300ms ease;
}

.card-piece:hover {
    box-shadow: inset 0 0 30px rgba(255, 79, 154, 0.1);
}

/* Sticker Card */
.card-sticker {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 15;
    margin: -10px;
    cursor: grab;
}

.sticker-pink { background: var(--bubblegum-pop); }
.sticker-violet { background: var(--grape-soda); }
.sticker-cyan { background: var(--slush-ice); }

.sticker-content {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--concrete-dark);
}

.sticker-violet .sticker-content { color: var(--chalk-white); }

/* Wheatpaste Card */
.card-wheatpaste {
    background: var(--asphalt-gray);
    padding: clamp(1.5rem, 3vw, 2.5rem);
    position: relative;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-wheatpaste::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 4px,
        rgba(255, 255, 255, 0.02) 4px,
        rgba(255, 255, 255, 0.02) 5px
    );
    opacity: 0.5;
    pointer-events: none;
}

.wheatpaste-quote {
    font-family: 'Permanent Marker', cursive;
    font-size: clamp(1.4rem, 3vw, 2.2rem);
    color: var(--electric-banana);
    line-height: 1.3;
    position: relative;
    z-index: 1;
}

/* Card Typography */
.card-title {
    font-family: 'Major Mono Display', monospace;
    font-size: clamp(1rem, 2vw, 1.4rem);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--chalk-white);
    margin-bottom: 0.5rem;
}

.card-body {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--chalk-white);
    max-width: 55ch;
    margin-bottom: 0.75rem;
}

.card-meta {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    color: var(--sidewalk-gray);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* Stencil Overlay on Piece Cards */
.card-piece::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolygon points='20,5 35,35 5,35' fill='none' stroke='%2300E5CC' stroke-width='0.5' opacity='0.08'/%3E%3C/svg%3E");
    transform: rotate(45deg);
    opacity: 0.4;
    pointer-events: none;
}

/* Footer Gutter */
.footer-gutter {
    position: relative;
    z-index: 10;
    padding: clamp(3rem, 6vh, 6rem) clamp(1.5rem, 4vw, 4rem);
    text-align: center;
    background: var(--asphalt-gray);
}

.footer-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--sidewalk-gray);
    opacity: 0.5;
}

.footer-sub {
    font-family: 'Permanent Marker', cursive;
    font-size: 1rem;
    color: var(--bubblegum-pop);
    margin-top: 0.5rem;
    opacity: 0.6;
}

/* Responsive */
@media (max-width: 640px) {
    .card-field {
        grid-template-columns: 1fr;
    }

    .card-piece {
        grid-column: span 1;
    }

    .card-tag {
        max-width: 100%;
        aspect-ratio: auto;
        padding: 2rem;
    }

    .card-sticker {
        margin: 0 auto;
    }

    .spray-enter.visible {
        transform: scale(1) rotate(0deg) translate(0px, 0px) !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .trace-node { animation: none; opacity: 0.2; }
    .data-glyph { animation: none; }

    .spray-enter {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .card:not(.card-sticker):hover {
        transform: none !important;
    }
}