:root {
  --bg: #0a0e14;
  --bg-panel: #0d131c;
  --bg-raised: #101825;
  --text: #c8d6e4;
  --text-dim: #5f7385;
  --border: #1e2c3d;
  --accent: #00e5ff;
  --accent-2: #ff2d95;
  --danger: #ff5577;
  --glow-soft: 0 0 6px rgba(0, 229, 255, 0.25);
  --glow-strong: 0 0 10px rgba(0, 229, 255, 0.45);
  --glow-pink: 0 0 8px rgba(255, 45, 149, 0.35);
  --tag-l: 0.82;
  --tag-c: 0.15;
  --tag-ink: #0a0e14;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, Menlo, monospace;
}

[data-theme="light"] {
  --bg: #f1f2ec;
  --bg-panel: #e7e9e0;
  --bg-raised: #fbfbf7;
  --text: #1d2530;
  --text-dim: #6c7580;
  --border: #c3c8ba;
  --accent: #00697a;
  --accent-2: #ad0f5f;
  --danger: #b3123a;
  --glow-soft: none;
  --glow-strong: none;
  --glow-pink: none;
  --tag-l: 0.45;
  --tag-c: 0.11;
  --tag-ink: #f5f5ef;
}

@media (prefers-color-scheme: light) {
  [data-theme="auto"] {
    --bg: #f1f2ec;
    --bg-panel: #e7e9e0;
    --bg-raised: #fbfbf7;
    --text: #1d2530;
    --text-dim: #6c7580;
    --border: #c3c8ba;
    --accent: #00697a;
    --accent-2: #ad0f5f;
    --danger: #b3123a;
    --glow-soft: none;
    --glow-strong: none;
    --glow-pink: none;
    --tag-l: 0.45;
    --tag-c: 0.11;
    --tag-ink: #f5f5ef;
  }
}

* { box-sizing: border-box; }

html {
  height: 100%;
  scroll-behavior: auto;
}

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

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

a:hover { text-decoration: none; }

input, select, button {
  font: inherit;
  color: var(--text);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 5px 8px;
}

input:focus, select:focus, button:focus { outline: 1px solid var(--accent); }

button { cursor: pointer; }

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

button.primary {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow-soft);
}

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

button.danger:hover { box-shadow: var(--glow-pink); }

.flash-bar {
  position: fixed;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  background: var(--bg-raised);
  border: 1px solid var(--accent-2);
  box-shadow: var(--glow-pink);
  padding: 6px 16px;
}

.flash-message { margin: 0; color: var(--accent-2); }

.layout {
  display: grid;
  grid-template-columns: 230px 50vw minmax(250px, 1fr);
  min-height: 100vh;
}

.rail {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100vh;
  position: sticky;
  top: 0;
  padding: 16px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
}

.brand-mini {
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-shadow: var(--glow-soft);
  text-decoration: none;
}

.rail-link {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--bg-raised);
  padding: 6px 10px;
}

.rail-link:hover { border-color: var(--accent); color: var(--accent); }

.rail-link.primary-link {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow-soft);
}

.rail-label {
  color: var(--text-dim);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.search-input, .scope-select, .tag-filter { width: 100%; }

.clear-filters { font-size: 12px; }

.rail-filter-state {
  margin: 0;
  color: var(--text-dim);
  font-size: 11px;
  border-left: 2px solid var(--accent-2);
  padding-left: 8px;
}

.task-panel {
  height: 100vh;
  overflow-y: auto;
  padding: 16px;
  border-right: 1px solid var(--border);
}

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

.task-list.drop-top { border-top: 2px solid var(--accent); }

.task {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin-bottom: 8px;
  padding: 8px 10px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.task.drop-after {
  border-color: var(--accent);
  box-shadow: var(--glow-strong);
}

.drag-handle {
  color: var(--text-dim);
  cursor: grab;
  user-select: none;
  padding-top: 2px;
}

.row-toggle { margin: 0; }

.toggle-button { padding: 0 7px; }

.task-body { flex: 1; min-width: 0; }

.task-title {
  color: var(--text);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  line-clamp: 2;
  overflow: hidden;
}

.task-title:hover { color: var(--accent); }

.task-tags {
  margin-top: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tag-chip {
  display: inline-block;
  background: oklch(var(--tag-l) var(--tag-c) calc(var(--tag-h) * 1deg));
  color: var(--tag-ink);
  border-radius: 2px;
  font-size: 11px;
  line-height: 1.6;
  padding: 0 6px;
  margin-right: 4px;
}

a.tag-chip { text-decoration: none; }

a.tag-chip.active { outline: 2px solid var(--text); }

.task-date { margin-top: 3px; color: var(--text-dim); font-size: 12px; }

.task.is-done { opacity: 0.55; }

.task.is-done .task-title {
  color: var(--text-dim);
  text-decoration: line-through;
}

.date-separator {
  list-style: none;
  margin: 14px 0 8px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--border);
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.empty {
  color: var(--text-dim);
  border: 1px dashed var(--border);
  padding: 18px;
  text-align: center;
}

.tag-panel {
  height: 100vh;
  overflow-y: auto;
  padding: 16px;
  background: var(--bg-panel);
}

.panel-title {
  margin: 0 0 12px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tag-list { list-style: none; margin: 12px 0 0; padding: 0; }

.tag-row {
  margin-bottom: 8px;
  padding: 8px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.tag-row-head { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }

.tag-count { color: var(--text-dim); font-size: 11px; }

.tag-details summary {
  cursor: pointer;
  list-style: none;
  color: var(--text-dim);
  font-size: 11px;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 1px 6px;
}

.tag-details summary:hover { color: var(--accent); border-color: var(--accent); }

.tag-details form, .tag-delete-form {
  display: flex;
  gap: 4px;
  margin: 6px 0 0;
}

.tag-rename-form input[name="name"] { width: 110px; }

.tag-merge-form select { max-width: 120px; }

.tag-delete-form { margin: 0; }

.auth, .settings, .form-page {
  max-width: 480px;
  margin: 8vh auto;
  padding: 0 16px;
}

.detail { max-width: 560px; margin: 6vh auto; padding: 0 16px; }

.brand {
  margin: 0 0 16px;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-shadow: var(--glow-strong);
}

.brand-cursor { color: var(--accent-2); }

.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

label { color: var(--text-dim); font-size: 12px; }

.hint { margin: 0; color: var(--text-dim); font-size: 11px; }

.form-error {
  margin: 0;
  color: var(--danger);
  border: 1px solid var(--danger);
  padding: 6px 8px;
}

.auth-alt { color: var(--text-dim); }

.page-title { color: var(--accent); letter-spacing: 0.08em; }

.section-title {
  margin: 0 0 8px;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.task-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  padding: 16px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.back-link { color: var(--text-dim); text-decoration: none; }

.back-link:hover { color: var(--accent); }

.detail-title { margin: 8px 0 16px; }

.detail-title.is-done { color: var(--text-dim); text-decoration: line-through; }

.detail-fields {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 16px;
  margin: 0;
  padding: 12px 16px;
  background: var(--bg-raised);
  border: 1px solid var(--border);
}

.detail-fields dt { color: var(--text-dim); }

.detail-fields dd { margin: 0; }

.detail-actions { display: flex; gap: 8px; margin: 16px 0; }

.account-line { margin: 0; }

.theme-form { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }

.radio-label { display: inline-flex; gap: 6px; align-items: center; color: var(--text); }