/* Skills Weight Board — spreadsheet aesthetic */

:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --header-bg: #eef0f3;
  --border: #d0d4db;
  --border-strong: #b8bec8;
  --text: #1a1d23;
  --text-muted: #5c6570;
  --zebra: #f8f9fb;
  --hover: #e8f0fe;
  --accent: #1a73e8;
  --accent-soft: #d2e3fc;
  --chip-bg: #e8eaed;
  --chip-active: #1a73e8;
  --chip-active-text: #fff;
  --weight-bar: #1a73e8;
  --weight-track: #e0e3e8;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --radius: 6px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --bg: #121418;
  --surface: #1c1f26;
  --header-bg: #252930;
  --border: #343a46;
  --border-strong: #4a5160;
  --text: #e8eaed;
  --text-muted: #9aa0a6;
  --zebra: #22262e;
  --hover: #2a3344;
  --accent: #8ab4f8;
  --accent-soft: #2a3a55;
  --chip-bg: #2d323c;
  --chip-active: #8ab4f8;
  --chip-active-text: #121418;
  --weight-bar: #8ab4f8;
  --weight-track: #343a46;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
}

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

html {
  color-scheme: light;
}

[data-theme="dark"] {
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.45;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem 1rem 2rem;
}

.header {
  margin-bottom: 1rem;
}

.header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.titles h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.theme-toggle {
  flex-shrink: 0;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  box-shadow: var(--shadow);
}

.theme-toggle:hover {
  border-color: var(--border-strong);
  background: var(--header-bg);
}

.meta {
  margin-top: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
}

.dot {
  opacity: 0.6;
}

.controls {
  margin-top: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.search-wrap input {
  width: 100%;
  max-width: 320px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  box-shadow: var(--shadow);
}

.search-wrap input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

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

.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.chip {
  border: 1px solid var(--border);
  background: var(--chip-bg);
  color: var(--text);
  border-radius: 999px;
  padding: 0.28rem 0.7rem;
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  text-transform: lowercase;
}

.chip:hover {
  border-color: var(--border-strong);
}

.chip.active {
  background: var(--chip-active);
  border-color: var(--chip-active);
  color: var(--chip-active-text);
  font-weight: 600;
}

.sheet-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: auto;
  max-height: min(70vh, 640px);
}

.sheet {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 480px;
}

.sheet thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--header-bg);
  border-bottom: 2px solid var(--border-strong);
  text-align: left;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 0;
  white-space: nowrap;
}

.th-btn {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  width: 100%;
  padding: 0.65rem 0.85rem;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  font-weight: 600;
  font-size: inherit;
  text-transform: inherit;
  letter-spacing: inherit;
  cursor: pointer;
  text-align: left;
}

.th-btn:hover {
  color: var(--text);
  background: var(--hover);
}

.sort-ind {
  font-size: 0.65rem;
  opacity: 0.85;
  min-width: 0.75em;
}

.sheet tbody td {
  padding: 0.55rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.sheet tbody tr:nth-child(even) td {
  background: var(--zebra);
}

.sheet tbody tr:hover td {
  background: var(--hover);
}

.sheet tbody tr:last-child td {
  border-bottom: 0;
}

.cell-skill {
  font-weight: 600;
}

.cell-weight {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent);
  white-space: nowrap;
}

.weight-cell {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 7rem;
}

.weight-bar {
  flex: 1;
  height: 6px;
  max-width: 80px;
  background: var(--weight-track);
  border-radius: 3px;
  overflow: hidden;
}

.weight-bar > span {
  display: block;
  height: 100%;
  background: var(--weight-bar);
  border-radius: 3px;
  min-width: 2px;
}

.cell-last-seen {
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
  white-space: nowrap;
}

.cat-badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: lowercase;
}

.loading-row td,
.empty {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem 1rem;
}

.empty {
  margin: 0;
}

.footer {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer a {
  color: var(--accent);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

.footer code {
  font-family: var(--mono);
  font-size: 0.85em;
}

@media (max-width: 560px) {
  .app {
    padding: 1rem 0.65rem 1.5rem;
  }

  .titles h1 {
    font-size: 1.25rem;
  }

  .search-wrap input {
    max-width: none;
  }

  .weight-bar {
    display: none;
  }

  .sheet {
    min-width: 0;
  }
}