/* ============================================================
   BCH WHALE MONITOR — STYLES
   Design language: a control-room ledger. Near-black background
   with a desaturated teal-green accent (not acid-green cliché),
   amber reserved strictly for whale-severity alerts.
   Monospace (JetBrains Mono) is used everywhere a number or
   address appears — addresses and balances read like a ledger,
   not UI chrome. Inter carries prose and labels.
   ============================================================ */

:root {
  /* Color tokens */
  --bg: #0a0f0d;
  --bg-raised: #10171480;
  --panel: #111815;
  --panel-border: #1f2b26;
  --text: #e8f0ec;
  --text-dim: #8fa39b;
  --text-faint: #5a6b63;
  --accent: #0ac18e;
  --accent-dim: #0ac18e26;
  --accent-strong: #5ef2c2;
  --amber: #ffb454;
  --amber-dim: #ffb45422;
  --red: #ff6b6b;
  --red-dim: #ff6b6b1f;

  /* Type */
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Layout */
  --radius: 10px;
  --radius-sm: 6px;
  --max-width: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  background: var(--bg);
  background-image:
    radial-gradient(circle at 15% 0%, #0ac18e0d 0%, transparent 45%),
    radial-gradient(circle at 85% 20%, #0ac18e08 0%, transparent 40%);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.mono {
  font-family: var(--font-mono);
}

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

button {
  font-family: var(--font-sans);
}

/* Visible keyboard focus everywhere, per accessibility floor */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

/* ============================================================
   SIGNATURE ELEMENT: pulse rail
   A thin sonar-line at the very top of the page. It sits flat
   until a whale transaction is detected, then animates a ping
   travelling across it. This is the page's one motif: the feed
   is "live" in a way you can see even before reading text.
   ============================================================ */
.pulse-rail {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 6px;
  width: 100%;
  background: #060908;
  overflow: hidden;
}

.pulse-line {
  width: 100%;
  height: 100%;
  display: block;
}

.pulse-line polyline {
  fill: none;
  stroke: var(--panel-border);
  stroke-width: 1;
}

.pulse-dot {
  position: absolute;
  top: 0;
  left: -8px;
  width: 8px;
  height: 6px;
  background: var(--accent);
  box-shadow: 0 0 12px 2px var(--accent);
  opacity: 0;
}

.pulse-dot.firing {
  animation: pulse-travel 1.4s ease-out;
}

.pulse-dot.firing.severe {
  background: var(--amber);
  box-shadow: 0 0 16px 3px var(--amber);
}

@keyframes pulse-travel {
  0%   { left: -8px; opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .pulse-dot.firing { animation: none; opacity: 0; }
}

/* ============================================================
   TOP BAR
   ============================================================ */
.topbar {
  border-bottom: 1px solid var(--panel-border);
  background: #0a0f0dcc;
  backdrop-filter: blur(6px);
  position: sticky;
  top: 6px;
  z-index: 40;
}

.topbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-mark {
  font-family: var(--font-mono);
  font-weight: 800;
  color: var(--accent);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.brand-name {
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
}

.topbar-status {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.status-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 5px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: var(--panel);
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-faint);
}

.status-dot.live {
  background: var(--accent);
  box-shadow: 0 0 6px 1px var(--accent);
}

.status-dot.error {
  background: var(--red);
  box-shadow: 0 0 6px 1px var(--red);
}

.price-chip {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-dim);
  border: 1px solid #0ac18e40;
  font-family: var(--font-mono);
}

.price-symbol {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.price-value {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent-strong);
}

.price-change {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.price-change.up { color: var(--accent-strong); }
.price-change.down { color: var(--red); }

/* ============================================================
   SHELL / SECTIONS
   ============================================================ */
.shell {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 32px;
  padding: 36px 0 12px;
  align-items: start;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin: 0 0 14px;
}

.hero h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem);
  line-height: 1.18;
  margin: 0 0 16px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.hero-sub {
  color: var(--text-dim);
  font-size: 1rem;
  max-width: 560px;
  margin: 0;
}

.hero-meta {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-meta-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.85rem;
  border-bottom: 1px dashed var(--panel-border);
  padding-bottom: 10px;
}

.hero-meta-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.hero-meta-label {
  color: var(--text-faint);
}

.hero-meta-value {
  color: var(--text);
  font-weight: 600;
  text-align: right;
}

/* ============================================================
   STAT GRID
   ============================================================ */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-card--accent {
  border-color: #ffb45440;
  background: linear-gradient(180deg, #ffb45412, var(--panel) 60%);
}

.stat-label {
  font-size: 0.74rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin: 0;
  word-break: break-word;
}

.stat-card--accent .stat-value {
  color: var(--amber);
}

.stat-sub {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin: 0;
}

/* ============================================================
   PANELS (shared container)
   ============================================================ */
.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 24px;
}

.panel-head {
  margin-bottom: 18px;
}

.panel-head--row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.panel-head h2 {
  font-size: 1.05rem;
  margin: 0 0 6px;
  font-weight: 700;
}

.panel-sub {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin: 0;
  max-width: 640px;
}

/* ============================================================
   SEARCH
   ============================================================ */
.search-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 220px;
  background: #0a0f0d;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-size: 0.88rem;
}

.search-input::placeholder {
  color: var(--text-faint);
}

.btn-primary, .btn-secondary {
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 20px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  transition: transform 0.08s ease, opacity 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #06120d;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }

.btn-secondary {
  background: transparent;
  color: var(--accent-strong);
  border: 1px solid #0ac18e40;
}

.btn-secondary:hover {
  background: var(--accent-dim);
}

.search-hint {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin: 10px 0 0;
}

.search-result {
  margin-top: 20px;
  border-top: 1px solid var(--panel-border);
  padding-top: 20px;
}

.search-result.is-error {
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.addr-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.addr-summary-item {
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.addr-summary-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.addr-summary-value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.addr-label-badge {
  display: inline-block;
  background: var(--accent-dim);
  color: var(--accent-strong);
  border: 1px solid #0ac18e40;
  border-radius: 999px;
  padding: 3px 11px;
  font-size: 0.74rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.addr-tx-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 360px;
  overflow-y: auto;
}

.addr-tx-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg);
  border: 1px solid var(--panel-border);
}

.addr-tx-row .dir-in { color: var(--accent-strong); }
.addr-tx-row .dir-out { color: var(--text-dim); }

/* ============================================================
   TWO COLUMN GRID
   ============================================================ */
.grid-2col {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 20px;
  align-items: start;
}

/* ============================================================
   WHALE FEED
   ============================================================ */
.feed-live-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--amber);
  border: 1px solid #ffb45440;
  background: var(--amber-dim);
  border-radius: 999px;
  padding: 4px 10px;
  height: fit-content;
  letter-spacing: 0.06em;
}

.feed-live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  animation: blink 1.6s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

@media (prefers-reduced-motion: reduce) {
  .feed-live-dot { animation: none; }
}

.feed-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 560px;
  overflow-y: auto;
  padding-right: 4px;
}

.feed-empty {
  color: var(--text-faint);
  font-size: 0.85rem;
  text-align: center;
  padding: 30px 10px;
}

.feed-item {
  border: 1px solid var(--panel-border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  background: var(--bg);
  padding: 12px 14px;
  animation: feed-enter 0.35s ease;
}

.feed-item.severity-extreme {
  border-left-color: var(--amber);
  background: linear-gradient(90deg, #ffb45412, var(--bg) 30%);
}

@keyframes feed-enter {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.feed-item-top {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.feed-amount {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--accent-strong);
}

.feed-item.severity-extreme .feed-amount {
  color: var(--amber);
}

.feed-usd {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}

.feed-time {
  font-size: 0.72rem;
  color: var(--text-faint);
  font-family: var(--font-mono);
}

.feed-route {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  word-break: break-all;
}

.feed-route .addr-tag {
  color: var(--text);
}

.feed-labels {
  margin-top: 6px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tiny-badge {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--panel-border);
  color: var(--text-dim);
}

.tiny-badge.exchange {
  background: var(--accent-dim);
  color: var(--accent-strong);
}

.tiny-badge.unknown {
  background: #2a221266;
  color: var(--amber);
}

/* ============================================================
   CHART
   ============================================================ */
.chart-wrap {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 10px;
}

#distChart {
  width: 100%;
  height: 280px;
  display: block;
}

.chart-legend {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 12px;
  font-size: 0.76rem;
  color: var(--text-dim);
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.chart-legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-wrap {
  overflow-x: auto;
}

.ledger-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.ledger-table th {
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-faint);
  padding: 0 12px 10px;
  border-bottom: 1px solid var(--panel-border);
  white-space: nowrap;
}

.ledger-table td {
  padding: 12px;
  border-bottom: 1px solid #1a241f;
  font-family: var(--font-mono);
  white-space: nowrap;
}

.ledger-table tr:last-child td {
  border-bottom: none;
}

.ledger-table td.addr-cell {
  font-family: var(--font-mono);
  color: var(--text-dim);
  max-width: 260px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ledger-table td.label-cell {
  font-family: var(--font-sans);
  white-space: normal;
}

.rank-cell {
  color: var(--text-faint);
  font-weight: 700;
}

.table-loading {
  text-align: center;
  color: var(--text-faint);
  font-family: var(--font-sans);
  padding: 24px;
}

.type-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.type-badge.exchange { background: var(--accent-dim); color: var(--accent-strong); }
.type-badge.pool { background: #5b8cff22; color: #8cb0ff; }
.type-badge.unknown { background: var(--amber-dim); color: var(--amber); }

/* ============================================================
   NETWORK STATS GRID
   ============================================================ */
.net-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.net-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
}

.net-label {
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.net-value {
  font-size: 1rem;
  font-weight: 700;
}

/* ============================================================
   EXPORT BLOCK
   ============================================================ */
.export-block {
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.78rem;
  color: var(--text-dim);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0 0 14px;
}

/* ============================================================
   DONATION BLOCK
   ============================================================ */
.donate-block {
  max-width: 560px;
  margin: 0 auto 24px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 16px 18px;
}

.donate-label {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin: 0 0 10px;
}

.donate-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.donate-address {
  background: var(--bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.78rem;
  color: var(--accent-strong);
  word-break: break-all;
}

.btn-small {
  padding: 7px 14px;
  font-size: 0.78rem;
}

.footer-links {
  margin-top: 10px;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 40px;
  font-size: 0.78rem;
  color: var(--text-faint);
  text-align: center;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .grid-2col {
    grid-template-columns: 1fr;
  }
  .topbar-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .stat-grid {
    grid-template-columns: 1fr 1fr;
  }
  .panel {
    padding: 18px;
  }
  .search-form {
    flex-direction: column;
  }
  .btn-primary {
    width: 100%;
  }
}