:root {
  --bg: #0d1117;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #f7931a; /* bitcoin orange */
  --card: #161b22;
  --border: #30363d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  padding: 2rem;
  max-width: 1100px;
  margin-inline: auto;
}

header h1 {
  margin: 0 0 1rem;
  color: var(--accent);
  font-weight: 600;
}

.tip-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.tip-row > div {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
}

.label {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.value {
  font-size: 1.1rem;
}

.hash {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  word-break: break-all;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.card h2 {
  margin-top: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0;
  align-items: center;
}

button {
  background: var(--accent);
  color: #000;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
}
button:hover:not(:disabled) {
  filter: brightness(1.1);
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

input[type="number"] {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem;
  width: 110px;
  font: inherit;
}

input[type="text"] {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem;
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.85rem;
  flex: 1;
  min-width: 280px;
}

.status {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--muted);
  min-height: 1.2em;
}
.status.error {
  color: #ff7b72;
}
.status.ok {
  color: #3fb950;
}

.block-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}
.block-table th,
.block-table td {
  padding: 0.4rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.block-table th {
  color: var(--muted);
  font-weight: 500;
  width: 130px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

#bi-canonical.ok {
  color: #3fb950;
}
#bi-canonical.warn {
  color: #d29922;
}

.block-table tbody tr.selected {
  background: rgba(247, 147, 26, 0.12);
}

.tip-refresh {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  background: transparent !important;
  border: none !important;
  padding: 0.75rem 0 !important;
}
.tip-refresh .status {
  margin-top: 0;
}

/* Clickable rows / hash cells. */
.block-table tbody tr.clickable {
  cursor: pointer;
}
.block-table tbody tr.clickable:hover {
  background: rgba(247, 147, 26, 0.08);
}
.linkish {
  cursor: pointer;
  color: var(--accent);
}
.linkish:hover {
  text-decoration: underline;
}

/* Collapsible <details> sections inside cards (forks, leaderboard). */
.card > details > summary {
  cursor: pointer;
  list-style: none;
}
.card > details > summary::-webkit-details-marker {
  display: none;
}
.card > details > summary::before {
  content: "▶ ";
  color: var(--muted);
  font-size: 0.9rem;
}
.card > details[open] > summary::before {
  content: "▼ ";
}
.card > details > summary h2 {
  margin: 0;
}

#forks-filter {
  flex: 1;
  min-width: 240px;
}
#forks-sort {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.4rem;
  font: inherit;
}

/* Inline expansion panel under a leaderboard row. */
.uploader-panel-row > .uploader-panel {
  background: rgba(255, 255, 255, 0.02);
  padding: 0.75rem 1rem;
}
.uploader-pager {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.uploader-pager button {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.3rem 0.6rem;
  font: inherit;
  cursor: pointer;
}
.uploader-pager button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Inline copy-to-clipboard button. */
.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 0.4rem;
  padding: 0 0.3rem;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  font: inherit;
  font-size: 0.85em;
  line-height: 1.4;
  vertical-align: middle;
}
.copy-btn:hover {
  color: var(--fg);
  background: rgba(247, 147, 26, 0.1);
}
.copy-btn.copied {
  color: var(--ok, #3fb950);
  border-color: var(--ok, #3fb950);
}