:root {
  --navy: #1f3a5f; --navy-2: #2a4d7a; --blue: #2e6fd8; --blue-50: #eef4fd;
  --bg: #f4f6f9; --card: #fff; --line: #e2e7ee; --text: #1d2733; --muted: #687587;
  --green: #1e8e5a; --green-50: #e8f6ef; --yellow: #b7860b; --yellow-50: #fdf6e3;
  --orange: #d0661a; --orange-50: #fdefe4; --red: #c8352d; --red-50: #fcebea;
  --radius: 8px; --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.45; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 20px; margin: 0; } h2 { font-size: 16px; margin: 0 0 12px; } h3 { font-size: 14px; margin: 0 0 8px; }
.boot { padding: 48px; text-align: center; color: var(--muted); }

/* ---------- khung */
.layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar { background: var(--navy); color: #cfd9e6; display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { padding: 18px 18px 14px; display: flex; gap: 10px; align-items: center; border-bottom: 1px solid rgba(255,255,255,.08); }
.brand .logo { width: 34px; height: 34px; border-radius: 8px; background: #fff; color: var(--navy); font-weight: 800; display: grid; place-items: center; }
.brand b { color: #fff; display: block; font-size: 14px; } .brand small { font-size: 11px; opacity: .75; }
.nav { padding: 10px 8px; flex: 1; }
.nav .grp { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; opacity: .55; padding: 12px 10px 4px; }
.nav a { display: flex; align-items: center; gap: 10px; color: #cfd9e6; padding: 8px 10px; border-radius: 6px; font-size: 13.5px; }
.nav a:hover { background: rgba(255,255,255,.06); text-decoration: none; color: #fff; }
.nav a.active { background: var(--blue); color: #fff; }
.nav .num { font-size: 10px; opacity: .6; width: 18px; }
.nav .badge { margin-left: auto; background: var(--red); color: #fff; border-radius: 10px; padding: 0 7px; font-size: 11px; }
.side-foot { padding: 12px 16px; font-size: 12px; border-top: 1px solid rgba(255,255,255,.08); }
.main { min-width: 0; }
.topbar { background: #fff; border-bottom: 1px solid var(--line); padding: 10px 24px; display: flex; align-items: center; gap: 12px; position: sticky; top: 0; z-index: 5; }
.topbar .title { flex: 1; min-width: 0; }
.topbar .title small { color: var(--muted); display: block; font-size: 12px; }
.menu-btn { display: none; }
.user-chip { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--blue-50); color: var(--blue); display: grid; place-items: center; font-weight: 700; }
.content { padding: 20px 24px 48px; max-width: 1400px; }

/* ---------- thành phần */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; margin-bottom: 16px; }
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.card-head h2 { margin: 0; flex: 1; }
.grid { display: grid; gap: 16px; }
.kpis { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.cols-2 { grid-template-columns: 1fr 1fr; } .cols-3 { grid-template-columns: repeat(3, 1fr); }
.kpi { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.kpi .lbl { color: var(--muted); font-size: 12px; } .kpi .val { font-size: 22px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi .sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.kpi.warn .val { color: var(--orange); } .kpi.bad .val { color: var(--red); } .kpi.good .val { color: var(--green); }
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: end; margin-bottom: 14px; }
.filters label, .form label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
input, select, textarea { font: inherit; padding: 7px 9px; border: 1px solid #cdd5df; border-radius: 6px; background: #fff; color: var(--text); min-width: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid #bcd3f7; border-color: var(--blue); }
textarea { min-height: 70px; resize: vertical; }
.btn { font: inherit; border: 1px solid #cdd5df; background: #fff; color: var(--text); padding: 7px 14px; border-radius: 6px; cursor: pointer; white-space: nowrap; }
.btn:hover { background: #f3f6fa; } .btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; } .btn.primary:hover { background: #255fbd; }
.btn.danger { background: #fff; border-color: #e6b3b0; color: var(--red); } .btn.success { background: var(--green); border-color: var(--green); color: #fff; }
.btn.sm { padding: 3px 9px; font-size: 12px; }
.form { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.form .full { grid-column: 1 / -1; }
.actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 14px; flex-wrap: wrap; }
.muted { color: var(--muted); } .right { text-align: right; } .nowrap { white-space: nowrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.pill { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; background: #eef1f5; color: #445; white-space: nowrap; }
.pill.green { background: var(--green-50); color: var(--green); } .pill.yellow { background: var(--yellow-50); color: var(--yellow); }
.pill.orange { background: var(--orange-50); color: var(--orange); } .pill.red { background: var(--red-50); color: var(--red); } .pill.blue { background: var(--blue-50); color: var(--blue); }
.note { background: var(--blue-50); border: 1px solid #cfe0fa; padding: 10px 12px; border-radius: 6px; font-size: 13px; }
.note.warn { background: var(--yellow-50); border-color: #f2dfa6; } .note.bad { background: var(--red-50); border-color: #f1c4c1; }
.check-box { border-radius: 8px; padding: 12px 14px; margin-top: 10px; font-size: 13px; border: 1px solid var(--line); }
.check-box.ok { background: var(--green-50); border-color: #bfe5d1; } .check-box.over { background: var(--red-50); border-color: #f1c4c1; }

/* ---------- bảng */
.tbl-tools { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; flex-wrap: wrap; }
.tbl-tools input[type=search] { width: 240px; }
.tbl-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 6px; }
table { border-collapse: collapse; width: 100%; background: #fff; }
th, td { padding: 8px 10px; border-bottom: 1px solid #edf0f4; text-align: left; vertical-align: top; }
th { background: #f7f9fb; font-weight: 600; font-size: 12.5px; color: #3c4858; position: sticky; top: 0; white-space: nowrap; }
th.sortable { cursor: pointer; user-select: none; } th.sortable:hover { color: var(--blue); }
tbody tr:hover { background: #fafcff; }
tfoot td { font-weight: 700; background: #f7f9fb; }
.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; font-size: 12px; color: var(--muted); gap: 8px; flex-wrap: wrap; }
.empty { text-align: center; color: var(--muted); padding: 24px; }
.bar { height: 8px; background: #edf0f4; border-radius: 4px; overflow: hidden; min-width: 80px; }
.bar > span { display: block; height: 100%; background: var(--green); }
.bar.yellow > span { background: #e1a90f; } .bar.orange > span { background: var(--orange); } .bar.red > span { background: var(--red); }
.hbar { display: grid; grid-template-columns: 170px 1fr 120px; gap: 10px; align-items: center; margin: 7px 0; font-size: 13px; }
.stack { display: flex; height: 16px; border-radius: 4px; overflow: hidden; background: #edf0f4; }
.stack span { display: block; height: 100%; }
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }
.c-act { background: #2e6fd8; } .c-com { background: #7aa5ea; } .c-hold { background: #f0b13c; } .c-free { background: #d9e2ec; }
.grid-input input { width: 100%; text-align: right; padding: 5px 6px; }
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { padding: 6px 0 6px 18px; border-left: 2px solid var(--line); position: relative; font-size: 13px; }
.timeline li::before { content: ""; position: absolute; left: -6px; top: 11px; width: 10px; height: 10px; border-radius: 50%; background: var(--blue); }
.steps { display: flex; gap: 6px; flex-wrap: wrap; } .steps .pill.cur { outline: 2px solid var(--blue); }

/* ---------- modal & toast */
.modal-bg { position: fixed; inset: 0; background: rgba(15, 23, 42, .45); display: grid; place-items: center; z-index: 50; padding: 16px; }
.modal { background: #fff; border-radius: 10px; width: min(860px, 100%); max-height: 92vh; overflow: auto; padding: 20px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.toast { position: fixed; right: 18px; bottom: 18px; max-width: 420px; z-index: 60; }
.toast div { background: #1d2733; color: #fff; padding: 10px 14px; border-radius: 8px; margin-top: 8px; box-shadow: var(--shadow); font-size: 13px; }
.toast div.err { background: var(--red); } .toast div.ok { background: var(--green); }

/* ---------- đăng nhập */
.login { min-height: 100vh; display: grid; place-items: center; background: linear-gradient(135deg, #1f3a5f, #2e6fd8); padding: 16px; }
.login .box { background: #fff; border-radius: 12px; padding: 28px; width: min(440px, 100%); box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.login h1 { margin-bottom: 4px; }

/* ---------- di động */
@media (max-width: 960px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: 260px; transform: translateX(-100%); transition: transform .2s; z-index: 40; }
  .sidebar.open { transform: none; }
  .menu-btn { display: inline-block; }
  .kpis { grid-template-columns: 1fr 1fr; } .cols-2, .cols-3 { grid-template-columns: 1fr; }
  .content { padding: 14px; } .topbar { padding: 10px 14px; }
  .hbar { grid-template-columns: 110px 1fr 90px; }
  .user-chip .who { display: none; }
}
@media print { .sidebar, .topbar, .tbl-tools, .pager, .btn { display: none !important; } .layout { display: block; } }
td:first-child { min-width: 140px; }
.layout { background: linear-gradient(to right, var(--navy) 240px, var(--bg) 240px); }
@media (max-width: 960px) { .layout { background: var(--bg); } }
.grid > * { min-width: 0; }
.card { min-width: 0; }
#reasonWrap { flex-direction: column; gap: 4px; }
#reasonWrap textarea { width: 100%; }