:root {
  --navy: #12355b;
  --blue: #2563eb;
  --line: #d9dee7;
  --bg: #f7f8fa;
  --card: #f1f3f6;
  --text: #111827;
  --muted: #657084;
  --danger: #b91c1c;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--text); background: #fff; }
a { color: var(--blue); }
input, select, textarea, button { font: inherit; }
input, select, textarea { width: 100%; min-height: 38px; border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; background: #fff; }
textarea { min-height: 82px; resize: vertical; }

.app-shell { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
.sidebar { background: var(--navy); color: #fff; padding: 22px 16px; display: flex; flex-direction: column; gap: 24px; }
.brand { font-size: 22px; font-weight: 700; }
.sidebar nav { display: grid; gap: 6px; }
.sidebar a { color: #fff; text-decoration: none; padding: 10px 12px; border-radius: 6px; }
.sidebar a:hover { background: rgba(255,255,255,.12); }
.logout-form { margin-top: auto; }
.main { background: #fff; padding: 24px; overflow-x: auto; }
.topbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; gap: 16px; }
.topbar h1 { margin: 0; font-size: 24px; letter-spacing: 0; }
.user-chip { border: 1px solid var(--line); background: var(--bg); border-radius: 999px; padding: 7px 12px; color: var(--muted); }

.login-page { min-height: 100vh; display: grid; place-items: center; background: var(--bg); padding: 24px; }
.login-card { width: min(420px, 100%); background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 28px; display: grid; gap: 16px; }
.login-card h1 { margin: 0 0 8px; color: var(--navy); letter-spacing: 0; }
.alert, .error-text { color: var(--danger); font-size: 14px; }

.button { display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 6px; padding: 9px 14px; min-height: 38px; background: var(--blue); color: #fff; text-decoration: none; cursor: pointer; white-space: nowrap; }
.button.secondary { background: #e8edf5; color: var(--navy); }
.sidebar .button.secondary { background: rgba(255,255,255,.14); color: #fff; }
.button.danger { background: var(--danger); }
.button.small { min-height: 32px; padding: 6px 10px; font-size: 14px; }
.button.full { width: 100%; }
.text-button { border: 0; background: transparent; color: var(--danger); padding: 0; cursor: pointer; }

.panel { border: 1px solid var(--line); background: var(--bg); border-radius: 8px; padding: 16px; margin-bottom: 20px; }
.panel h2 { margin: 0 0 14px; font-size: 17px; letter-spacing: 0; }
.grid-form { display: grid; grid-template-columns: repeat(4, minmax(140px, 1fr)); gap: 10px; align-items: end; }
.grid-form textarea { grid-column: span 2; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.link-card, .task-card { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 14px; }
.link-card h2, .task-card h3 { margin: 4px 0 8px; font-size: 18px; letter-spacing: 0; }
.link-card p, .task-card p { color: var(--muted); margin: 0 0 10px; line-height: 1.5; }
.card-id { color: var(--muted); font-size: 12px; }
.url-text { display: block; word-break: break-all; margin-bottom: 12px; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.muted { opacity: .55; }

.table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); }
.table th, .table td { border-bottom: 1px solid var(--line); padding: 10px; text-align: left; vertical-align: middle; }
.table th { background: var(--bg); color: var(--muted); font-weight: 600; }
.swatch { display: inline-block; width: 18px; height: 18px; border-radius: 4px; vertical-align: middle; margin-right: 8px; border: 1px solid var(--line); }

.kanban-board { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(280px, 1fr); gap: 14px; overflow-x: auto; padding-bottom: 12px; }
.kanban-column { min-height: 480px; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
.kanban-column h2 { margin: 0 0 12px; padding-left: 8px; border-left: 5px solid var(--blue); font-size: 17px; letter-spacing: 0; }
.task-list { min-height: 400px; display: grid; align-content: start; gap: 10px; }
.task-card { cursor: grab; background: #fff; }
.task-card.dragging { opacity: .45; }
.task-card.overdue { border-color: var(--danger); box-shadow: inset 4px 0 0 var(--danger); }
.task-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; color: var(--muted); }
.priority { border-radius: 999px; padding: 2px 8px; background: #e5e7eb; color: #111827; }
.priority.high { background: #fee2e2; color: #991b1b; }
.priority.medium { background: #fef3c7; color: #92400e; }
.priority.low { background: #dcfce7; color: #166534; }
.inline-form { margin-top: 10px; }

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .grid-form { grid-template-columns: 1fr; }
  .grid-form textarea { grid-column: span 1; }
  .topbar { align-items: flex-start; flex-direction: column; }
}