:root {
  color-scheme: light;
  --paper: #f4f1ea;
  --surface: #fffdf8;
  --ink: #1d2a2f;
  --ink-soft: #55636a;
  --line: #ddd6c7;
  --accent: #0f6e6a;
  --accent-ink: #ffffff;
  --accent-hover: #0b5854;
  --focus: #0b4f8a;
  --todo: #5b6b73;
  --in-progress: #8a5a00;
  --blocked: #a33a2b;
  --done: #2e6b3a;
  --radius: 10px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: ui-sans-serif, -apple-system, "Segoe UI", system-ui, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.5 var(--sans);
  min-height: 100vh;
  padding-bottom: env(safe-area-inset-bottom);
  overflow-x: hidden;
}

/* Focus: visible for keyboard users only */
:focus { outline: none; }
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -100px;
  background: var(--ink);
  color: #fff;
  padding: 8px 12px;
  border-radius: 6px;
  z-index: 10;
}
.skip-link:focus { top: 12px; }

/* Header */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  padding-left: max(24px, env(safe-area-inset-left));
  padding-right: max(24px, env(safe-area-inset-right));
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--accent);
  color: var(--accent-ink);
}
.brand-name { margin: 0; font: 600 18px/1.1 var(--serif); letter-spacing: 0.01em; }
.brand-sub { margin: 0; font-size: 13px; color: var(--ink-soft); }
.summary { margin: 0; font-size: 14px; color: var(--ink-soft); font-variant-numeric: tabular-nums; text-align: right; }

/* Layout */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  max-width: 920px;
  margin: 24px auto;
  padding: 0 16px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
}

.list-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 600; text-wrap: balance; }
h1 { margin: 0; font-size: 24px; }
.count { margin: 0; color: var(--ink-soft); font-size: 14px; font-variant-numeric: tabular-nums; }

/* Toolbar */
.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 200px;
  gap: 12px;
  margin-bottom: 14px;
}
.field { display: grid; gap: 4px; min-width: 0; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-soft); }

input[type="search"],
select {
  font: inherit;
  width: 100%;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid #b8b0a0;
  border-radius: 8px;
  background-color: #fff;
  color: #1d2a2f;
}
input[type="search"]::placeholder { color: #7a858b; }

/* Task list */
.task-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

.task-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
.task-item:hover { border-color: #b8b0a0; }
.task-main { min-width: 0; }
.task-title { margin: 0; font-weight: 600; font-size: 15px; overflow-wrap: anywhere; }
.task-meta { margin: 2px 0 0; font-size: 13px; color: var(--ink-soft); }
.task-meta span + span::before { content: " · "; }

.task-side {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

.open-btn {
  min-height: 44px;
  padding: 0 14px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.open-btn:hover { background: #e6f1f0; }

/* Status badges */
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}
.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.status-todo { color: var(--todo); }
.status-in-progress { color: var(--in-progress); }
.status-blocked { color: var(--blocked); }
.status-done { color: var(--done); }

/* Empty state */
.empty-state {
  margin-top: 16px;
  padding: 20px;
  border: 1px dashed #b8b0a0;
  border-radius: 8px;
  text-align: center;
}
.empty-state h2 { margin: 0 0 6px; font-size: 18px; }
.empty-state p { margin: 0 0 14px; color: var(--ink-soft); }

/* Buttons */
.btn {
  min-height: 44px;
  padding: 0 16px;
  font: inherit;
  font-weight: 600;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.btn-secondary { background: #fff; border-color: #b8b0a0; color: var(--ink); }
.btn-secondary:hover { background: #f0ece2; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: #f0ece2; }

/* Detail dialog */
.detail-dialog {
  width: min(640px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  overscroll-behavior: contain;
  box-shadow: 0 18px 50px rgba(29, 42, 47, 0.25);
}
.detail-dialog::backdrop { background: rgba(29, 42, 47, 0.45); }

.detail-inner { padding: 22px 24px 24px; }
.detail-top { display: flex; justify-content: space-between; align-items: start; gap: 12px; }
.detail-id { margin: 0 0 4px; font-size: 13px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
#detail-title { margin: 0; font-size: 22px; line-height: 1.25; overflow-wrap: anywhere; }
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
  margin: 18px 0;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.detail-grid dt { font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-soft); }
.detail-grid dd { margin: 2px 0 0; overflow-wrap: anywhere; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; margin: 0; padding: 0; }
.tags li {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #ece7db;
  color: var(--ink);
}
.detail-body { margin: 0; white-space: pre-line; overflow-wrap: anywhere; }
.status-field { display: grid; gap: 6px; margin-top: 18px; }
.status-field label { font-weight: 600; font-size: 14px; }
.status-feedback { min-height: 1.4em; margin: 6px 0 0; font-size: 14px; color: var(--accent); }
.status-select { max-width: 280px; }

.detail-actions { display: flex; justify-content: flex-end; margin-top: 18px; }

/* Desktop */
@media (min-width: 720px) {
  .toolbar { grid-template-columns: minmax(0, 1fr) 220px; }
}

/* Narrow screens: dialog becomes a full-height sheet */
@media (max-width: 719px) {
  .app-header { padding: 12px 16px; }
  .summary { font-size: 13px; }
  .layout { margin: 16px auto; padding: 0 12px; }
  .panel { padding: 16px; }
  .toolbar { grid-template-columns: minmax(0, 1fr); }
  .task-item { grid-template-columns: minmax(0, 1fr); }
  .task-side { justify-content: space-between; }
  .detail-dialog {
    width: 100vw;
    max-width: 100vw;
    height: 100%;
    max-height: none;
    margin: 0;
    border: 0;
    border-radius: 0;
  }
  .detail-inner { padding: 18px 16px calc(24px + env(safe-area-inset-bottom)); }
  .detail-grid { grid-template-columns: minmax(0, 1fr); }
  #detail-title { font-size: 20px; }
  .status-select { max-width: none; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}