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

/* === VARIABLES === */
:root {
    --bg: #fdf6ee;
    --text: #2d1a10;
    --coral: #e8724a;
    --amber: #f0a050;
    --rose: #c85070;
    --brown: #8b4a30;
    --blush: #f5d4c0;
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Lato', sans-serif;
    --font-mono: 'Space Mono', monospace;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* === HEADER === */
#site-header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    background:
        radial-gradient(ellipse 120% 80% at 20% 80%, rgba(240,160,80,0.2), transparent),
        radial-gradient(ellipse 80% 120% at 80% 20%, rgba(200,80,112,0.15), transparent);
}

.logo {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
}

.logo-accent {
    color: var(--coral);
}

.tagline {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--brown);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

/* === HERO CANVAS === */
#hero-canvas-section {
    position: relative;
    width: 100%;
    height: 420px;
    margin: 1rem 0;
    overflow: hidden;
    background:
        radial-gradient(ellipse 100% 60% at 50% 50%, rgba(232,114,74,0.12), transparent),
        radial-gradient(ellipse 60% 100% at 30% 70%, rgba(200,80,112,0.1), transparent),
        radial-gradient(ellipse 80% 80% at 70% 30%, rgba(240,160,80,0.1), transparent);
}

#generative-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

#canvas-overlay {
    position: absolute;
    bottom: 1.5rem;
    left: 2rem;
    pointer-events: none;
}

.canvas-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--text);
    opacity: 0.7;
}

.canvas-subtitle {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--brown);
    opacity: 0.6;
}

/* === METRICS ROW === */
#metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 0 2rem;
    margin: 1.5rem 0;
}

.metric-panel {
    background:
        radial-gradient(ellipse 140% 100% at 20% 80%, rgba(245,212,192,0.5), transparent),
        radial-gradient(ellipse 100% 140% at 80% 20%, rgba(240,160,80,0.15), transparent);
    border: 1px solid rgba(139,74,48,0.15);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.metric-panel:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(45,26,16,0.1);
}

.panel-level-1 {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--coral);
}

.metric-label {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--brown);
}

.panel-level-2 {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, margin-top 0.5s ease;
    margin-top: 0;
}

.metric-panel.expanded .panel-level-2 {
    max-height: 200px;
    margin-top: 1rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.3rem 0;
    border-bottom: 1px solid rgba(139,74,48,0.1);
}

.detail-key {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--brown);
}

.detail-val {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text);
}

/* === SECTION HEADINGS === */
.section-heading {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    color: var(--text);
    padding: 0 2rem;
    margin: 2rem 0 1rem;
}

/* === FLOW CATEGORIES === */
#flow-categories {
    padding-bottom: 1rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 0 2rem;
}

.category-card {
    background:
        radial-gradient(ellipse 120% 80% at 30% 70%, rgba(240,160,80,0.18), transparent),
        radial-gradient(ellipse 80% 120% at 70% 30%, rgba(200,80,112,0.12), transparent),
        radial-gradient(ellipse 100% 100% at 50% 50%, rgba(245,212,192,0.3), transparent);
    border: 1px solid rgba(139,74,48,0.12);
    border-radius: 12px;
    padding: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(45,26,16,0.1);
}

.card-icon {
    margin-bottom: 0.75rem;
}

.category-card h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text);
}

.card-stat {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    color: var(--coral);
    margin-top: 0.25rem;
}

.stat-unit {
    font-size: 0.75rem;
    color: var(--brown);
}

.card-detail {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease, margin-top 0.5s ease;
    margin-top: 0;
}

.category-card.expanded .card-detail {
    max-height: 300px;
    margin-top: 1rem;
}

.card-detail p {
    font-size: 0.9rem;
    color: var(--brown);
    line-height: 1.5;
}

.mini-chart {
    height: 40px;
    margin-top: 0.75rem;
    border-radius: 4px;
    overflow: hidden;
}

/* === TRANSACTION STREAM === */
#transaction-stream {
    padding-bottom: 2rem;
}

#stream-container {
    padding: 0 2rem;
    max-height: 320px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.stream-item {
    display: grid;
    grid-template-columns: 100px 1fr 120px 100px;
    gap: 1rem;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(245,212,192,0.25);
    border-radius: 8px;
    border-left: 3px solid var(--coral);
    animation: streamIn 0.4s ease-out;
}

.stream-item[data-type="settlement"] { border-left-color: var(--amber); }
.stream-item[data-type="exchange"] { border-left-color: var(--rose); }
.stream-item[data-type="clearing"] { border-left-color: var(--brown); }

@keyframes streamIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.stream-time {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--brown);
}

.stream-desc {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--text);
}

.stream-amount {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--coral);
    text-align: right;
}

.stream-status {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-align: center;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: rgba(232,114,74,0.15);
    color: var(--coral);
}

.stream-status.settled {
    background: rgba(240,160,80,0.15);
    color: var(--amber);
}

.stream-status.cleared {
    background: rgba(139,74,48,0.15);
    color: var(--brown);
}

/* === ABOUT === */
#about-section {
    padding: 3rem 2rem;
    background:
        radial-gradient(ellipse 120% 60% at 10% 90%, rgba(200,80,112,0.15), transparent),
        radial-gradient(ellipse 80% 100% at 90% 10%, rgba(240,160,80,0.12), transparent),
        radial-gradient(ellipse 100% 80% at 50% 50%, rgba(245,212,192,0.2), transparent);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-content h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 1rem;
}

.about-content p {
    font-size: 1rem;
    color: var(--brown);
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* === FOOTER === */
#site-footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(139,74,48,0.15);
}

.footer-text {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    color: var(--brown);
}

.footer-mono {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: rgba(139,74,48,0.5);
    margin-top: 0.25rem;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
    #metrics-row { grid-template-columns: repeat(2, 1fr); }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .stream-item { grid-template-columns: 80px 1fr 100px; }
    .stream-status { display: none; }
}

@media (max-width: 560px) {
    #metrics-row { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: 1fr; }
    .logo { font-size: 2.2rem; }
    #hero-canvas-section { height: 280px; }
}