@font-face {
  font-family: 'Space Grotesk';
  src: url('./assets/space-grotesk.ttf') format('truetype');
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: 'DM Sans';
  src: url('./assets/dm-sans.ttf') format('truetype');
  font-weight: 100 1000;
  font-display: swap;
}
@font-face {
  font-family: 'IBM Plex Mono';
  src: url('./assets/ibm-plex-mono.ttf') format('truetype');
  font-weight: 100 700;
  font-display: swap;
}

:root {
  --color-primary: #0D9488;
  --color-primary-dark: #0F766E;
  --color-accent: #EA580C;
  --color-bg: #F0FDFA;
  --color-fg: #134E4A;
  --color-card: #FFFFFF;
  --color-muted: #E8F1F4;
  --color-muted-fg: #475569;
  --color-border: #99F6E4;
  --color-destructive: #DC2626;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --radius: 10px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 12px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: var(--space-3); }
.brand-mark { width: 28px; height: 28px; color: var(--color-primary); }
.brand-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.1;
}
.brand-tag { margin: 0; font-size: 12px; color: var(--color-muted-fg); }
.topbar-meta { font-size: 13px; color: var(--color-muted-fg); }

.layout {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.toolbar {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: var(--space-4);
  align-items: end;
}
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: 13px; font-weight: 600; color: var(--color-muted-fg); }
input[type="search"], select {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-card);
  color: var(--color-fg);
  min-height: 44px;
  width: 100%;
}
input[type="search"]:focus, select:focus, button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: no-preference) {
  input[type="search"], select, button { transition: border-color 150ms ease, background-color 150ms ease; }
}

.item-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-3);
  align-items: start;
}
.item-main { display: flex; flex-direction: column; gap: var(--space-2); }
.item-title { margin: 0; font-size: 17px; font-weight: 600; }
.item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-4);
  font-size: 13px;
  color: var(--color-muted-fg);
}
.item-tags { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-muted);
  color: var(--color-muted-fg);
  font-weight: 600;
}
.status-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
}
.status-todo { background: #F1F5F9; color: #334155; }
.status-in-progress { background: #DBEAFE; color: #1E40AF; }
.status-blocked { background: #FEE2E2; color: #991B1B; }
.status-done { background: #D1FAE5; color: #065F46; }

.btn {
  font: inherit;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-fg);
  padding: 8px 14px;
  border-radius: var(--radius);
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
}
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-secondary { background: var(--color-muted); }
.btn-icon { padding: 8px; display: inline-flex; align-items: center; justify-content: center; }
.btn-icon svg { width: 18px; height: 18px; }
.open-item { white-space: nowrap; }

.empty-state {
  text-align: center;
  padding: var(--space-6);
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.empty-icon { width: 48px; height: 48px; color: var(--color-muted-fg); }

/* Detail dialog */
.detail {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: stretch;
  justify-content: flex-end;
  z-index: 50;
  padding: 0;
}
.detail[hidden] { display: none; }
.detail-panel {
  background: var(--color-card);
  width: 100%;
  max-width: 520px;
  height: 100%;
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  border-left: 1px solid var(--color-border);
}
.detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
}
.detail-title { margin: 0; font-family: var(--font-display); font-size: 22px; line-height: 1.2; }
.detail-body-wrap { display: flex; flex-direction: column; gap: var(--space-4); }
.detail-meta { display: flex; flex-direction: column; gap: var(--space-2); }
.meta-row { display: grid; grid-template-columns: 100px 1fr; gap: var(--space-2); font-size: 14px; align-items: center; }
.meta-label { font-weight: 600; color: var(--color-muted-fg); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.detail-summary { color: var(--color-muted-fg); font-size: 15px; }
.detail-body { white-space: pre-wrap; font-size: 15px; line-height: 1.6; }
#status-control { max-width: 200px; }

.toast {
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-fg);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-size: 14px;
  z-index: 60;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}
.toast[hidden] { display: none; }

@media (max-width: 640px) {
  .toolbar { grid-template-columns: 1fr; }
  .topbar { padding: var(--space-3) var(--space-4); }
  .layout { padding: var(--space-4); }
  .item { grid-template-columns: 1fr; }
  .detail-panel { max-width: 100%; }
  .open-item { width: 100%; }
}

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