:root {
  --bg: #f4f1ea;
  --bg-2: #ebe6dc;
  --surface: #fbf9f4;
  --ink: #1a1a1a;
  --ink-2: #3a3733;
  --muted: #6b655c;
  --line: #d9d2c4;
  --line-2: #e6e0d3;
  --accent: #c2410c;
  --accent-2: #9a3412;
  --accent-soft: #fbe9e0;
  --blue: #1d4ed8;
  --blue-soft: #e3eafc;
  --green: #15803d;
  --green-soft: #e3f0e6;
  --amber: #b45309;
  --amber-soft: #fbeed8;
  --red: #b91c1c;
  --red-soft: #fde2e2;
  --shadow: 0 1px 2px rgba(20,18,14,.06), 0 8px 24px rgba(20,18,14,.08);
  --radius: 14px;
  --radius-sm: 8px;
  --font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-serif: "DM Serif Display", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

@font-face {
  font-family: "DM Sans";
  src: url("./assets/dm-sans.ttf") format("truetype");
  font-weight: 100 1000;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "DM Serif Display";
  src: url("./assets/dm-serif.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("./assets/ibm-plex-mono.ttf") format("truetype");
  font-weight: 100 700;
  font-style: normal;
  font-display: swap;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}
img { max-width: 100%; display: block; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: .5rem .75rem;
  border-radius: var(--radius-sm); z-index: 100;
}
.skip-link:focus { left: .75rem; top: .75rem; }

.app-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: .75rem; }
.brand-mark { color: var(--accent); display: grid; place-items: center; }
.brand-name {
  font-family: var(--font-serif); font-size: 1.5rem; line-height: 1;
  letter-spacing: -.01em; display: block;
}
.brand-tag { font-size: .75rem; color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.header-meta { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: flex-end; }
.meta-pill {
  font-size: .75rem; font-weight: 600; padding: .35rem .7rem;
  border-radius: 999px; background: var(--accent-soft); color: var(--accent-2);
}
.meta-pill--muted { background: var(--bg-2); color: var(--muted); }

.layout {
  max-width: 1180px; margin: 0 auto; padding: 1.5rem;
  display: grid; grid-template-columns: 1fr; gap: 1.25rem;
}
@media (min-width: 960px) {
  .layout { grid-template-columns: 360px 1fr; align-items: start; }
}

.toolbar {
  display: grid; gap: .75rem;
  padding: 1rem; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: sticky; top: 78px; z-index: 10;
}
@media (min-width: 960px) {
  .toolbar { grid-column: 1; grid-row: 1; }
}
.field { display: flex; flex-direction: column; gap: .35rem; }
.field label { font-size: .78rem; font-weight: 600; color: var(--muted); letter-spacing: .04em; text-transform: uppercase; }
.input-wrap { position: relative; }
.input-icon { position: absolute; left: .75rem; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
input[type="search"], select {
  width: 100%; font: inherit; font-size: .95rem;
  padding: .65rem .85rem; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: #fff; color: var(--ink);
  transition: border-color .15s ease, box-shadow .15s ease;
}
input[type="search"] { padding-left: 2.25rem; }
input[type="search"]:focus-visible, select:focus-visible {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
input[type="search"]::-webkit-search-cancel-button { -webkit-appearance: none; }

.list-section { min-width: 0; }
@media (min-width: 960px) {
  .list-section { grid-column: 2; grid-row: 1; }
}
.list-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: .75rem; flex-wrap: wrap; }
.list-title { font-family: var(--font-serif); font-size: 1.75rem; margin: 0; letter-spacing: -.02em; }
.list-sub { margin: 0; color: var(--muted); font-size: .85rem; }

.task-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .6rem; }
.task-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1rem 1.1rem;
  display: grid; gap: .5rem;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  position: relative;
}
.task-card:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-1px); }
.task-card:focus-within { border-color: var(--accent); }
.task-top { display: flex; align-items: flex-start; justify-content: space-between; gap: .75rem; }
.task-title { font-weight: 600; font-size: 1rem; margin: 0; line-height: 1.3; }
.task-meta { display: flex; flex-wrap: wrap; gap: .4rem .75rem; font-size: .8rem; color: var(--muted); }
.task-meta span { display: inline-flex; align-items: center; gap: .3rem; }
.task-tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.tag {
  font-size: .7rem; font-weight: 600; padding: .2rem .55rem;
  border-radius: 999px; background: var(--bg-2); color: var(--ink-2);
}
.status-badge {
  font-size: .7rem; font-weight: 700; padding: .25rem .6rem;
  border-radius: 999px; letter-spacing: .03em; text-transform: uppercase;
  white-space: nowrap;
}
.status--todo { background: var(--amber-soft); color: var(--amber); }
.status--in-progress { background: var(--blue-soft); color: var(--blue); }
.status--blocked { background: var(--red-soft); color: var(--red); }
.status--done { background: var(--green-soft); color: var(--green); }

.task-actions { display: flex; align-items: center; justify-content: flex-end; gap: .5rem; margin-top: .25rem; }
.open-item {
  font: inherit; font-size: .85rem; font-weight: 600;
  padding: .45rem .85rem; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  cursor: pointer; transition: background .15s ease, border-color .15s ease;
}
.open-item:hover { border-color: var(--accent); color: var(--accent); }
.open-item:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.empty-state {
  text-align: center; padding: 3rem 1.5rem;
  background: var(--surface); border: 1px dashed var(--line);
  border-radius: var(--radius); color: var(--muted);
}
.empty-state h2 { font-family: var(--font-serif); color: var(--ink); margin: .5rem 0 .25rem; }
.empty-state p { margin: 0 0 1rem; }
.empty-illustration { color: var(--accent); opacity: .7; margin-bottom: .5rem; }

.btn {
  font: inherit; font-size: .9rem; font-weight: 600;
  padding: .6rem 1.1rem; border-radius: var(--radius-sm);
  border: 1px solid transparent; cursor: pointer;
  transition: background .15s ease, transform .1s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-2); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.detail-dialog {
  border: none; padding: 0; background: transparent;
  max-width: 100vw; max-height: 100vh; width: 100%;
}
.detail-dialog::backdrop {
  background: rgba(20,18,14,.45); backdrop-filter: blur(2px);
}
.detail-dialog[open] { display: grid; place-items: center; }
.detail {
  background: var(--surface); border-radius: var(--radius);
  width: min(720px, 92vw); max-height: 88vh; overflow: auto;
  padding: 1.5rem 1.6rem; box-shadow: var(--shadow);
  position: relative;
}
.detail-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.detail-title { font-family: var(--font-serif); font-size: 1.5rem; margin: 0; letter-spacing: -.02em; line-height: 1.2; }
.close-detail {
  font: inherit; font-size: .85rem; font-weight: 600;
  padding: .4rem .75rem; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  cursor: pointer; flex-shrink: 0;
}
.close-detail:hover { border-color: var(--accent); color: var(--accent); }
.close-detail:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.detail-body { color: var(--ink-2); white-space: pre-wrap; line-height: 1.65; font-size: .95rem; }
.detail-meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem 1rem; margin: 1rem 0 1.25rem; }
.detail-meta dt { font-size: .72rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.detail-meta dd { margin: .15rem 0 0; font-size: .9rem; }
.detail-tags { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: 1rem; }

.status-control-wrap { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--line-2); }
.status-control-wrap label { font-size: .8rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.status-control-wrap select { width: auto; min-width: 160px; }

.feedback {
  font-size: .85rem; color: var(--green); font-weight: 600;
  opacity: 0; transition: opacity .2s ease;
}
.feedback.show { opacity: 1; }

.toast-region { position: fixed; bottom: 1.25rem; right: 1.25rem; z-index: 60; display: grid; gap: .5rem; }
.toast {
  background: var(--ink); color: #fff; padding: .7rem 1rem;
  border-radius: var(--radius-sm); font-size: .85rem; box-shadow: var(--shadow);
  animation: toast-in .2s ease;
}
@keyframes toast-in { from { transform: translateY(8px); opacity: 0; } to { transform: none; opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media (max-width: 600px) {
  .app-header { padding: .9rem 1rem; }
  .layout { padding: 1rem; }
  .detail { width: 96vw; padding: 1.2rem; }
  .detail-meta { grid-template-columns: 1fr; }
}