/* WhaleFlows — CT/terminal aesthetic. Pure black, monospace, neon green/red.
   Mobile-first: layout starts in a single column; charts and flows reflow at
   wider breakpoints. No CSS framework — this is one file, hand-written. */

:root {
  --bg: #000000;
  --bg-elev: #0a0a0a;
  --bg-card: #0e0e0e;
  --border: #1a1a1a;
  --border-bright: #2a2a2a;
  --text: #e8e8e8;
  --text-dim: #888888;
  --text-faint: #555555;
  --up: #34d399;       /* tailwind emerald-400 */
  --down: #f87171;     /* tailwind red-400 */
  --accent: #34d399;   /* same green as 'up' for brand cohesion */
  --accent-dim: #1f6f57;
  --warn: #fbbf24;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, "Roboto Mono", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip {
  position: absolute;
  left: -9999px;
  top: auto;
}
.skip:focus {
  position: static;
  display: inline-block;
  margin: 8px;
  padding: 8px 12px;
  background: var(--accent);
  color: var(--bg);
}

/* ──────────────── Hero ──────────────── */

.hero {
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(1200px 400px at 50% -120px, rgba(52, 211, 153, 0.08), transparent 70%),
    var(--bg);
  padding: 56px 20px 28px;
}
.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 28px;
  letter-spacing: -0.5px;
}
.brand-mark {
  color: var(--accent);
  font-weight: 700;
}
.brand-name {
  font-weight: 600;
  letter-spacing: -1px;
}
.brand-tld {
  color: var(--text-dim);
  font-weight: 400;
}
.tagline {
  margin: 14px 0 28px;
  color: var(--text-dim);
  max-width: 720px;
  font-family: var(--sans);
  font-size: 15px;
}
.tagline a { color: var(--accent); }

.hero-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 8px;
}
.strip-cell {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px 18px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.strip-label {
  font-size: 13px;
  color: var(--text-faint);
  letter-spacing: 1px;
  min-width: 36px;
}
.strip-price {
  font-size: 22px;
  font-weight: 600;
}
.strip-deltas {
  display: flex;
  gap: 10px;
  margin-left: auto;
  flex-wrap: wrap;
}
.strip-delta {
  font-size: 13px;
  color: var(--text-dim);
  white-space: nowrap;
}
.strip-delta .up { color: var(--up); }
.strip-delta .down { color: var(--down); }

@media (min-width: 720px) {
  .hero-strip { grid-template-columns: repeat(3, 1fr); }
  .strip-cell { padding: 14px 18px; }
  .strip-deltas { margin-left: auto; }
}

/* ──────────────── Sections ──────────────── */

.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 20px 16px;
  border-bottom: 1px solid var(--border);
}
.section:last-of-type { border-bottom: none; }
.section-head {
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--accent);
  margin: 0 0 4px;
  font-weight: 500;
}
.section-sub {
  margin: 0 0 24px;
  color: var(--text-dim);
  font-family: var(--sans);
  font-size: 14px;
}
.sub-head {
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--text);
  margin: 28px 0 8px;
}

#about p, #about li {
  font-family: var(--sans);
  font-size: 15px;
  color: var(--text);
}
#about ul { padding-left: 22px; }
#about li { margin-bottom: 8px; }
#about a { color: var(--accent); }
.caveats-list strong { color: var(--warn); }

/* ──────────────── Charts ──────────────── */

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 24px;
}
.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  flex-wrap: wrap;
  gap: 10px;
}
.chart-title {
  margin: 0;
  font-size: 18px;
  letter-spacing: 1px;
}
.tf-buttons {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.tf-btn {
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--border-bright);
  border-radius: 4px;
  padding: 4px 10px;
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  transition: all 100ms ease;
}
.tf-btn:hover {
  color: var(--text);
  border-color: var(--accent-dim);
}
.tf-btn.is-active {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}
.chart-container {
  width: 100%;
  height: 320px;
}
@media (min-width: 720px) {
  .chart-container { height: 400px; }
}

/* ──────────────── Net flows ──────────────── */

.flows-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 720px) {
  .flows-grid { grid-template-columns: 1fr 1fr; }
}
.flow-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}
.flow-asset {
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-faint);
  margin-bottom: 6px;
}
.flow-amount {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 4px;
}
.flow-amount.up { color: var(--up); }
.flow-amount.down { color: var(--down); }
.flow-usd {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 10px;
}
.flow-delta {
  font-size: 13px;
  color: var(--text-dim);
}
.flow-delta .up { color: var(--up); }
.flow-delta .down { color: var(--down); }
.flow-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--sans);
}
.up-color { color: var(--up); }
.down-color { color: var(--down); }

/* ──────────────── Tweets ──────────────── */

.tweet-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.tweet {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 18px;
}
.tweet-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 1px;
}
.tweet-time {
  color: var(--text-faint);
}
.tweet-link {
  color: var(--accent);
  font-size: 12px;
}
.tweet-body {
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--text);
  margin: 0;
}
.tweet-body .up { color: var(--up); }
.tweet-body .down { color: var(--down); }
.tweet-empty {
  color: var(--text-faint);
  list-style: none;
  text-align: center;
  padding: 28px;
}
.more-btn {
  margin-top: 16px;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 4px;
  padding: 8px 14px;
  font-family: var(--mono);
  font-size: 13px;
  cursor: pointer;
}
.more-btn:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ──────────────── Footer ──────────────── */

.site-foot {
  border-top: 1px solid var(--border);
  padding: 28px 20px;
  margin-top: 24px;
}
.foot-inner {
  max-width: 1100px;
  margin: 0 auto;
  color: var(--text-faint);
  font-size: 12px;
  letter-spacing: 1px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  align-items: center;
}
.foot-sep { color: var(--border-bright); }

/* ──────────────── Tiny utilities ──────────────── */

.up { color: var(--up); }
.down { color: var(--down); }
.dim { color: var(--text-dim); }