:root {
  color-scheme: light;
  --bg: #f5f7f9;
  --surface: #ffffff;
  --surface-muted: #f0f3f5;
  --border: #e3e8ec;
  --text: #0f1419;
  --muted: #5b6b78;
  --accent: #1d9bf0;
  --accent-strong: #0b7fcc;
  --accent-soft: rgba(29, 155, 240, 0.12);
  --success: #12805c;
  --success-soft: rgba(18, 128, 92, 0.12);
  --danger: #c93030;
  --danger-soft: rgba(201, 48, 48, 0.1);
  --warning: #9a6200;
  --warning-soft: rgba(196, 128, 0, 0.13);
  --radius: 14px;
  --radius-small: 9px;
  --shadow: 0 1px 2px rgba(15, 20, 25, 0.05), 0 6px 20px rgba(15, 20, 25, 0.05);
  --font: 'Segoe UI', system-ui, -apple-system, Roboto, 'Helvetica Neue', Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #0b0e11;
    --surface: #15191e;
    --surface-muted: #1c2127;
    --border: #2a3138;
    --text: #e7e9ea;
    --muted: #8d9aa6;
    --accent: #1d9bf0;
    --accent-strong: #4cb0f5;
    --accent-soft: rgba(29, 155, 240, 0.16);
    --success: #3ccf95;
    --success-soft: rgba(60, 207, 149, 0.14);
    --danger: #ff6b6b;
    --danger-soft: rgba(255, 107, 107, 0.13);
    --warning: #f2b544;
    --warning-soft: rgba(242, 181, 68, 0.14);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 6px 20px rgba(0, 0, 0, 0.25);
  }
}

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 var(--font);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-strong);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.15rem;
}

h3 {
  font-size: 1rem;
}

[hidden] {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.muted {
  color: var(--muted);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px max(16px, calc((100vw - 1100px) / 2));
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
}

.brand img {
  width: 28px;
  height: 28px;
}

.actions {
  display: flex;
  gap: 8px;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 16px 64px;
  display: grid;
  gap: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, opacity 0.15s ease;
}

.button:hover {
  background: var(--accent-strong);
}

.button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.button-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.button-ghost:hover {
  background: var(--surface-muted);
}

.button:focus-visible,
.input:focus-visible,
.chip-button:focus-visible,
.icon-button:focus-visible,
.history-item:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.status {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 0.86rem;
}

.chip-label {
  color: var(--muted);
}

.chip-live {
  border-color: transparent;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}

.notice {
  margin: 0;
  padding: 12px 16px;
  border-radius: var(--radius-small);
  background: var(--warning-soft);
  color: var(--warning);
}

.notice-error {
  background: var(--danger-soft);
  color: var(--danger);
}

.notice-info {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.commit-panel {
  display: grid;
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.commit-panel p {
  margin: 0;
  color: var(--muted);
}

.commit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.input.code {
  min-height: 200px;
  font: 0.85rem/1.5 ui-monospace, 'Cascadia Code', Consolas, monospace;
  resize: vertical;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 16px;
  margin-bottom: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: 16px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card-quiet {
  box-shadow: none;
  background: transparent;
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.badge {
  min-width: 28px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
}

.badge-active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.empty {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 40px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  text-align: center;
}

.trend-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.trend {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  align-items: baseline;
  gap: 8px;
  padding: 9px 0;
  border-top: 1px solid var(--border);
}

.trend:first-child {
  border-top: 0;
}

.trend-rank {
  color: var(--muted);
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

.trend-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.trend-name {
  overflow: hidden;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.trend-name:hover {
  color: var(--accent-strong);
  text-decoration: underline;
}

.trend-reason {
  color: var(--muted);
  font-size: 0.84rem;
}

.trend-count {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.all-trends {
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.all-trends summary {
  padding: 14px 16px;
  font-weight: 600;
  cursor: pointer;
}

.all-trends .trend-list {
  padding: 0 16px 8px;
  columns: 2 280px;
  column-gap: 32px;
}

.all-trends .trend {
  break-inside: avoid;
}

.history-list {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.history-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 16px;
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.history-item:hover {
  background: var(--surface-muted);
}

.history-item[aria-current='true'] {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.history-date {
  font-weight: 600;
}

.history-summary {
  color: var(--muted);
  font-size: 0.88rem;
}

.history-summary-error {
  color: var(--danger);
}

.setup {
  max-width: 760px;
}

.setup-intro {
  display: grid;
  gap: 8px;
}

.setup-intro p {
  margin: 0;
  color: var(--muted);
}

.form {
  display: grid;
  gap: 20px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.field {
  display: grid;
  gap: 6px;
}

.field-label {
  font-weight: 600;
  font-size: 0.92rem;
}

.input {
  width: 100%;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.interests {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  border: 0;
}

.interest-list {
  display: grid;
  gap: 10px;
}

.interests legend {
  margin-bottom: 4px;
  padding: 0;
}

.interest-columns,
.interest-row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr) 40px;
  gap: 8px;
  align-items: center;
}

.interest-columns {
  color: var(--muted);
  font-size: 0.82rem;
}

.icon-button {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: transparent;
  color: var(--muted);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.icon-button:hover {
  color: var(--danger);
  border-color: var(--danger);
}

.add-interest {
  justify-self: start;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
}

.chip-button {
  padding: 5px 12px;
  border: 1px dashed var(--border);
  border-radius: 999px;
  background: transparent;
  color: var(--text);
  font: inherit;
  cursor: pointer;
}

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

.hint {
  margin: 0;
  padding: 12px 14px;
  border-radius: var(--radius-small);
  background: var(--surface-muted);
  color: var(--muted);
  font-size: 0.9rem;
}

.form-error {
  margin: 0;
  color: var(--danger);
  font-weight: 600;
}

.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.35rem;
  }

  .topbar {
    padding: 10px 16px;
  }

  .button {
    padding: 0 14px;
  }

  .brand span {
    display: none;
  }

  .form {
    padding: 16px;
  }

  .interest-columns {
    display: none;
  }

  .interest-row {
    grid-template-columns: minmax(0, 1fr) 40px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
  }

  .interest-row .interest-keywords {
    grid-column: 1;
  }

  .interest-row .icon-button {
    grid-column: 2;
    grid-row: 1;
  }
}