/* ppuzzl.bar - Wabi-sabi Bento Grid */
/* Fonts: Fraunces (headlines), Recursive (body/code) */

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

:root {
    --bg-aged-linen: #f7f2ea;
    --surface-parchment: #f0e8d8;
    --border-golden-straw: #c9b99a;
    --text-dark-umber: #3d2b1f;
    --text-warm-brown: #5a4636;
    --accent-terracotta: #c8956c;
    --accent-iron-oxide: #9b6b4a;
    --highlight-kiln-ash: #e3d5c0;
    --interactive-persimmon: #b85c38;
    --kintsugi-gold: #d4a86a;
    --gap: clamp(8px, 1.5vw, 20px);
    --margin: 2vw;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-aged-linen);
    color: var(--text-dark-umber);
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 0, 'CASL' 0.3, 'wght' 400;
    line-height: 1.7;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Paper-fiber texture via noise */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='256' height='256' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
    background-size: 256px 256px;
}

/* Kintsugi overlay */
.kintsugi-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.kintsugi-line {
    fill: none;
    stroke: var(--kintsugi-gold);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-dasharray: 1;
    stroke-dashoffset: 1;
    transition: stroke-dashoffset 1.2s ease-out;
    vector-effect: non-scaling-stroke;
}

.kintsugi-line.visible {
    stroke-dashoffset: 0;
}

/* Circuit overlay */
.circuit-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.circuit-line {
    stroke: var(--border-golden-straw);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}

.circuit-node {
    fill: var(--accent-terracotta);
}

/* Bento Grid Layout */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--gap);
    padding: var(--margin);
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

/* Base bento cell */
.bento-cell {
    background: var(--surface-parchment);
    border: 1px solid var(--border-golden-straw);
    border-radius: 3px;
    padding: clamp(1rem, 2vw, 2rem);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px) scale(0.97);
    transition: box-shadow 300ms cubic-bezier(0.34, 1.56, 0.64, 1),
                transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.bento-cell.animate-in {
    opacity: 1;
    transform: translateY(0) scale(1);
    animation: bounceEnter 600ms cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.bento-cell:hover {
    box-shadow: 0 4px 16px rgba(61, 43, 31, 0.08);
    transform: translateY(-2px);
}

.bento-cell.animate-in:hover {
    transform: translateY(-2px);
}

@keyframes bounceEnter {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    60% {
        opacity: 1;
        transform: translateY(-4px) scale(1.005);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Cell Variants - Grid Positioning */

/* Title: spans 8 columns, row 1 */
.bento-cell--title {
    grid-column: span 8;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
}

/* Shape intro: spans 4 columns, row 1 */
.bento-cell--shape-intro {
    grid-column: span 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

/* Wide: spans full 12 columns */
.bento-cell--wide {
    grid-column: span 12;
    position: relative;
}

/* Tall: spans 4 columns, 2 rows */
.bento-cell--tall {
    grid-column: span 4;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 360px;
}

/* Square: spans 4 columns */
.bento-cell--square {
    grid-column: span 4;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Medium: spans 4 columns */
.bento-cell--medium {
    grid-column: span 4;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* Wide shallow: spans 8 columns */
.bento-cell--wide-shallow {
    grid-column: span 8;
}

/* Small: spans 3 columns */
.bento-cell--small {
    grid-column: span 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 140px;
}

/* Medium tall: spans 5 columns */
.bento-cell--medium-tall {
    grid-column: span 5;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

/* Guide header: spans 10 columns centered */
.bento-cell--guide-header {
    grid-column: 2 / 12;
    padding: clamp(1.5rem, 3vw, 3rem);
}

/* Step: spans 10 columns centered */
.bento-cell--step {
    grid-column: 2 / 12;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.bento-cell--step-final {
    padding-bottom: clamp(1.5rem, 3vw, 3rem);
}

/* Footer: spans full 12 columns */
.bento-cell--footer {
    grid-column: span 12;
    background: transparent;
    border: 1px solid var(--border-golden-straw);
    text-align: center;
    padding: clamp(1rem, 2vw, 1.5rem);
}

/* Typography */
.heading {
    font-family: 'Fraunces', serif;
    font-variation-settings: 'SOFT' 80, 'WONK' 1;
    color: var(--text-dark-umber);
    line-height: 1.15;
    transition: font-variation-settings 600ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.heading:hover {
    font-variation-settings: 'SOFT' 100, 'WONK' 1;
}

.heading--main {
    font-size: clamp(1.8rem, 4vw, 3.6rem);
    font-weight: 600;
    font-optical-sizing: auto;
    margin-bottom: 0.5rem;
}

.heading--section {
    font-size: clamp(1.4rem, 3vw, 2.4rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.heading--small {
    font-size: clamp(1.1rem, 2vw, 1.5rem);
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.subtitle {
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 0, 'CASL' 0.3, 'wght' 400;
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    color: var(--text-warm-brown);
    line-height: 1.7;
    max-width: 60ch;
}

.body-text {
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 0, 'CASL' 0.3, 'wght' 400;
    font-size: clamp(1rem, 1.2vw, 1.15rem);
    color: var(--text-warm-brown);
    line-height: 1.7;
}

.body-text--compact {
    font-size: clamp(0.9rem, 1vw, 1rem);
}

/* Accent Numbers */
.accent-number {
    font-family: 'Fraunces', serif;
    font-weight: 900;
    font-variation-settings: 'SOFT' 0, 'WONK' 0;
    font-size: clamp(2rem, 3vw, 3rem);
    color: var(--accent-terracotta);
    line-height: 1;
}

/* Code Block */
.code-block {
    background: #f5efe6;
    border-left: 3px solid var(--accent-terracotta);
    padding: 1.2em;
    border-radius: 2px;
    margin-bottom: 0.75rem;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
}

.code-block code {
    font-family: 'Recursive', monospace;
    font-variation-settings: 'MONO' 1, 'CASL' 0, 'wght' 450;
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    color: var(--text-dark-umber);
    line-height: 1.6;
    white-space: pre;
}

.code-label {
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 1, 'CASL' 0, 'wght' 400;
    font-size: 0.8rem;
    color: var(--accent-iron-oxide);
    letter-spacing: 0.05em;
}

/* Shape Labels */
.shape-label {
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 0, 'CASL' 0.5, 'wght' 400;
    font-size: 0.8rem;
    color: var(--border-golden-straw);
    letter-spacing: 0.08em;
    margin-top: 0.75rem;
    text-transform: lowercase;
}

/* Motifs */
.motif {
    display: block;
}

.motif--broken-circle {
    width: clamp(60px, 8vw, 100px);
    height: clamp(60px, 8vw, 100px);
}

.motif--tangram {
    width: clamp(80px, 12vw, 140px);
    height: auto;
}

.motif--interlock {
    width: clamp(80px, 10vw, 140px);
    height: auto;
    margin-bottom: 0.75rem;
}

.motif--dots {
    width: clamp(50px, 6vw, 80px);
    height: clamp(50px, 6vw, 80px);
}

.motif--inline {
    width: clamp(40px, 5vw, 60px);
    height: auto;
    margin-top: auto;
    align-self: flex-end;
    opacity: 0.6;
}

/* Dot Grid Background */
.dot-grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle, var(--border-golden-straw) 1px, transparent 1px);
    background-size: 16px 16px;
    opacity: 0.25;
    pointer-events: none;
    z-index: 0;
}

.dot-grid-bg + * {
    position: relative;
    z-index: 1;
}

.dot-grid-bg ~ * {
    position: relative;
    z-index: 1;
}

/* Principle Row */
.principle-row {
    display: flex;
    align-items: flex-start;
    gap: clamp(1rem, 2vw, 2rem);
}

.principle-row .accent-number {
    flex-shrink: 0;
}

/* Footer */
.footer-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.footer-link {
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 0, 'CASL' 0.3, 'wght' 400;
    font-size: 0.85rem;
    color: var(--text-warm-brown);
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: color 300ms ease;
}

.footer-link:hover {
    color: var(--accent-terracotta);
}

.footer-separator {
    color: var(--border-golden-straw);
    font-size: 0.85rem;
}

.footer-text {
    font-family: 'Recursive', sans-serif;
    font-variation-settings: 'MONO' 0, 'CASL' 0.5, 'wght' 400;
    font-size: 0.75rem;
    color: var(--border-golden-straw);
    letter-spacing: 0.08em;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .bento-cell {
        opacity: 1;
        transform: none;
        animation: none !important;
        transition: none !important;
    }

    .heading {
        transition: none !important;
    }

    .kintsugi-line {
        stroke-dashoffset: 0;
        transition: none !important;
    }
}

/* Responsive: Mobile single column below 640px */
@media (max-width: 640px) {
    .bento-grid {
        grid-template-columns: 1fr;
        padding: 4vw;
    }

    .bento-cell--title,
    .bento-cell--shape-intro,
    .bento-cell--wide,
    .bento-cell--tall,
    .bento-cell--square,
    .bento-cell--medium,
    .bento-cell--wide-shallow,
    .bento-cell--small,
    .bento-cell--medium-tall,
    .bento-cell--guide-header,
    .bento-cell--step,
    .bento-cell--footer {
        grid-column: 1 / -1;
        grid-row: auto;
    }

    .bento-cell--tall {
        min-height: auto;
    }

    .circuit-overlay,
    .kintsugi-overlay {
        display: none;
    }
}

/* Responsive: Tablet 641-1024px */
@media (min-width: 641px) and (max-width: 1024px) {
    .bento-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .bento-cell--title {
        grid-column: span 4;
    }

    .bento-cell--shape-intro {
        grid-column: span 2;
    }

    .bento-cell--wide {
        grid-column: span 6;
    }

    .bento-cell--tall {
        grid-column: span 3;
    }

    .bento-cell--square {
        grid-column: span 3;
    }

    .bento-cell--medium {
        grid-column: span 3;
    }

    .bento-cell--wide-shallow {
        grid-column: span 6;
    }

    .bento-cell--small {
        grid-column: span 2;
    }

    .bento-cell--medium-tall {
        grid-column: span 4;
    }

    .bento-cell--guide-header {
        grid-column: 1 / -1;
    }

    .bento-cell--step {
        grid-column: 1 / -1;
    }

    .bento-cell--footer {
        grid-column: span 6;
    }
}