:root {
  --bg: #0b1020;
  --card: #12182b;
  --muted: #8fa3c2;
  --text: #e6eefc;
  --accent: #4da3ff;
  --accent-2: #10b981;
  --danger: #f87171;
  --warning: #fbbf24;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial; }
body { background: linear-gradient(180deg, #0b1020, #0a0f1d); color: var(--text); }
.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }
.nav { display: flex; gap: 10px; align-items: center; justify-content: space-between;
  margin-bottom: 18px; padding: 14px 16px; background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; backdrop-filter: blur(8px); }
.nav h1 { font-size: 18px; margin: 0; color: #d9e8ff; }
.nav a, .nav button { color: var(--text); text-decoration: none; border: 1px solid rgba(255,255,255,0.1);
  padding: 8px 12px; border-radius: 10px; background: rgba(255,255,255,0.05); cursor: pointer; }
.nav a:hover, .nav button:hover { border-color: rgba(255,255,255,0.25); }
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 14px; }
.card { grid-column: span 12; padding: 16px; border-radius: 14px; background: var(--card);
  border: 1px solid rgba(255,255,255,0.08); }
@media(min-width: 900px) { .col-6 { grid-column: span 6; } .col-4 { grid-column: span 4; } .col-8 { grid-column: span 8; } }
.card h2 { font-size: 16px; margin: 0 0 12px; color: #d9e8ff; }
.stat { display: flex; gap: 10px; align-items: center; flex-wrap: wrap;}
.stat .pill { font-size: 12px; padding: 6px 10px; border-radius: 999px; background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08); color: var(--muted); }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 10px 8px; border-bottom: 1px dashed rgba(255,255,255,0.12); font-size: 13px; color: #dbe6ff; }
.table th { text-align: left; color: #9fb4da; font-weight: 600; }
.table tr:hover td { background: rgba(255,255,255,0.03); }
.badge { padding: 4px 8px; border-radius: 8px; font-size: 12px; border: 1px solid rgba(255,255,255,0.1); }
.badge.low { background: rgba(16,185,129,0.1); border-color: rgba(16,185,129,0.3); }
.badge.med { background: rgba(251,191,36,0.1); border-color: rgba(251,191,36,0.3); }
.badge.high{ background: rgba(248,113,113,0.1); border-color: rgba(248,113,113,0.3); }
.badge.todo { background: rgba(77,163,255,0.12); border-color: rgba(77,163,255,0.35); }
.badge.doing{ background: rgba(251,191,36,0.12); border-color: rgba(251,191,36,0.35); }
.badge.done { background: rgba(16,185,129,0.12); border-color: rgba(16,185,129,0.35); }
form input, form select, form textarea { width: 100%; padding: 10px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.04); color: var(--text); margin-bottom: 12px; }
form textarea { min-height: 100px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.btn { padding: 8px 12px; border-radius: 10px; border: 1px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.06); color: var(--text); text-decoration: none; display: inline-block; }
.btn.acc { border-color: rgba(77,163,255,0.4); } .btn.ok { border-color: rgba(16,185,129,0.4); }
.btn.warn { border-color: rgba(251,191,36,0.4); } .btn.dang { border-color: rgba(248,113,113,0.4); }
.searchbar { display: flex; gap: 8px; flex-wrap: wrap; }
.small { font-size: 12px; color: var(--muted); }
.footer { margin: 24px 0; text-align: center; color: var(--muted); font-size: 12px; }
.collapsible { cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.collapsible .caret { font-size: 18px; opacity: .7; }
.section { margin-top: 10px; }
.hidden { display: none; }