@font-face {
  font-family: "Space Grotesk";
  src: url("./assets/space-grotesk.ttf") format("truetype");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Sans";
  src: url("./assets/dm-sans.ttf") format("truetype");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("./assets/ibm-plex-mono.ttf") format("truetype");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --bg: #f4efe6;
  --bg-2: #ece5d8;
  --surface: #fbf8f2;
  --surface-2: #f0e9dc;
  --ink: #1a1a1a;
  --ink-soft: #3d3a34;
  --muted: #7a7368;
  --line: #d9d0bf;
  --line-strong: #b9ae96;
  --accent: #0f5c5c;
  --accent-2: #e8a33d;
  --accent-soft: #dcecea;
  --danger: #b33a2b;
  --shadow: 0 1px 2px rgba(26,26,26,.06), 0 8px 24px rgba(26,26,26,.08);
  --radius: 10px;
  --radius-sm: 6px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.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 { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; align-items: baseline; gap: 12px; }
.brand-mark {
  width: 14px; height: 14px; background: var(--accent); border-radius: 3px;
  display: inline-block; transform: rotate(45deg); margin-right: 2px;
}
.brand-name {
  font-family: var(--font-display); font-weight: 700; font-size: 20px; letter-spacing: -0.02em;
}
.brand-sub {
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.12em;
}
.count-summary {
  font-family: var(--font-mono); font-size: 12px; color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  gap: 0;
  flex: 1;
  min-height: 0;
}

.list-pane {
  border-right: 1px solid var(--line);
  padding: 24px 20px 40px;
  overflow-y: auto;
  background: var(--bg);
}
.toolbar {
  display: grid; gap: 12px; margin-bottom: 18px;
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase;
  letter-spacing: 0.14em; color: var(--muted);
}
input[type="search"], select {
  font-family: var(--font-body); font-size: 14px;
  padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: var(--radius-sm);
  background: var(--surface); color: var(--ink);
  transition: border-color .15s, box-shadow .15s;
}
input[type="search"]:focus, select:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

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

.task-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 16px; cursor: default;
  transition: border-color .15s, transform .15s, box-shadow .15s;
  position: relative;
}
.task-card:hover { border-color: var(--line-strong); box-shadow: var(--shadow); }
.task-card.is-active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

.task-card-head { display: flex; align-items: flex-start; gap: 10px; justify-content: space-between; }
.task-title {
  font-family: var(--font-display); font-weight: 600; font-size: 15px; line-height: 1.3;
  margin: 0 0 6px; letter-spacing: -0.01em;
}
.task-meta { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; }
.chip {
  font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.1em;
  padding: 3px 8px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--surface-2); color: var(--ink-soft);
}
.chip.status-todo { border-color: #c9c2b0; }
.chip.status-in-progress { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.chip.status-blocked { background: #f3e0dc; border-color: var(--danger); color: var(--danger); }
.chip.status-done { background: #e6efe3; border-color: #6b8f5e; color: #3f6b33; }
.chip.priority-high { color: var(--danger); border-color: #e7b9b2; }

.task-sub {
  font-size: 13px; color: var(--muted); margin-top: 6px; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.task-footer {
  display: flex; align-items: center; justify-content: space-between; margin-top: 10px;
  font-family: var(--font-mono); font-size: 11px; color: var(--muted);
}
.open-item {
  font-family: var(--font-body); font-size: 13px; font-weight: 600;
  color: var(--accent); background: transparent; border: 0; cursor: pointer;
  padding: 4px 0; text-decoration: underline; text-underline-offset: 3px;
}
.open-item:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

.detail-pane {
  padding: 32px 40px 60px; overflow-y: auto; background: var(--surface);
}
.detail-pane[hidden] { display: none; }
.detail-empty {
  display: flex; align-items: center; justify-content: center; height: 100%;
  color: var(--muted); font-family: var(--font-mono); font-size: 13px;
}

.detail { max-width: 720px; }
.detail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.detail-title {
  font-family: var(--font-display); font-weight: 700; font-size: 28px; line-height: 1.15;
  letter-spacing: -0.02em; margin: 0;
}
.close-detail {
  font-family: var(--font-body); font-size: 13px; font-weight: 600;
  color: var(--ink-soft); background: var(--surface-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 8px 12px; cursor: pointer;
  white-space: nowrap;
}
.close-detail:hover { border-color: var(--line-strong); }
.close-detail:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.detail-meta {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px;
  padding: 18px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  margin-bottom: 24px;
}
.meta-row { display: flex; flex-direction: column; gap: 2px; }
.meta-label { font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); }
.meta-value { font-size: 14px; color: var(--ink); }

.detail-body {
  font-size: 15px; line-height: 1.65; color: var(--ink-soft); white-space: pre-wrap;
}
.detail-body p { margin: 0 0 12px; }

.status-row {
  display: flex; align-items: center; gap: 12px; margin-top: 28px; padding-top: 20px;
  border-top: 1px solid var(--line);
}
.status-row label { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); }
.status-control {
  min-width: 160px;
}

.feedback {
  font-family: var(--font-mono); font-size: 12px; color: var(--accent);
}

.empty-state {
  text-align: center; padding: 48px 20px; color: var(--muted);
}
.empty-state[hidden] { display: none; }
.empty-icon { font-size: 36px; margin-bottom: 8px; }
.empty-state h2 { font-family: var(--font-display); color: var(--ink); margin: 0 0 6px; }
.empty-state p { margin: 0 0 16px; }

.btn { font-family: var(--font-body); font-size: 14px; font-weight: 600; padding: 10px 16px; border-radius: var(--radius-sm); cursor: pointer; border: 1px solid transparent; }
.btn-ghost { background: var(--surface); border-color: var(--line-strong); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: var(--surface); padding: 10px 16px; border-radius: 999px;
  font-size: 13px; box-shadow: var(--shadow); z-index: 50;
}
.toast[hidden] { display: none; }

/* dialog mobile */
.detail-dialog {
  border: none; padding: 0; width: 100%; max-width: 100%; height: 100%;
  background: var(--surface); color: var(--ink);
}
.detail-dialog::backdrop { background: rgba(26,26,26,.4); }
.dialog-inner { padding: 20px; height: 100%; overflow-y: auto; }

/* responsive */
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .list-pane { border-right: none; }
  .detail-pane { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

@media (max-width: 390px) {
  .topbar { padding: 14px 16px; }
  .list-pane { padding: 16px 12px 32px; }
}