:root {
  color-scheme: light;
  --bg: #f3f6f0;
  --surface: #ffffff;
  --surface-2: #e9efe4;
  --ink: #16211b;
  --ink-2: #4a5a50;
  --ink-3: #7b8a80;
  --line: #d6dfd2;
  --accent: #1f6b45;
  --accent-ink: #ffffff;
  --accent-soft: #dcefe3;
  --water: #2b6e8c;
  --s-moi: #2b6e8c;
  --s-xacminh: #6b5aa6;
  --s-dangxuly: #c2791a;
  --s-daxong: #2e8b57;
  --s-taiphat: #b23a3a;
  --sev-3: #b23a3a;
  --sev-2: #c2791a;
  --sev-1: #6f8f3a;
  --shadow: 0 1px 2px rgba(22, 33, 27, .06), 0 8px 24px rgba(22, 33, 27, .06);
  --radius: 12px;
  --font-body: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Lora", Georgia, "Times New Roman", serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #111814; --surface: #1a231d; --surface-2: #222d26;
    --ink: #e4ebe5; --ink-2: #b3c0b6; --ink-3: #7f8f85; --line: #2f3c33;
    --accent: #4fb27e; --accent-ink: #0e1a13; --accent-soft: #1f3a2b;
    --water: #5aa3c4; --s-moi: #5aa3c4; --s-xacminh: #a494dd; --s-dangxuly: #e39a3c; --s-daxong: #56b87f; --s-taiphat: #e06868;
    --sev-3: #e06868; --sev-2: #e39a3c; --sev-1: #9dbb5a;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #111814; --surface: #1a231d; --surface-2: #222d26;
  --ink: #e4ebe5; --ink-2: #b3c0b6; --ink-3: #7f8f85; --line: #2f3c33;
  --accent: #4fb27e; --accent-ink: #0e1a13; --accent-soft: #1f3a2b;
  --water: #5aa3c4; --s-moi: #5aa3c4; --s-xacminh: #a494dd; --s-dangxuly: #e39a3c; --s-daxong: #56b87f; --s-taiphat: #e06868;
  --sev-3: #e06868; --sev-2: #e39a3c; --sev-1: #9dbb5a;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 15px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-display); line-height: 1.2; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.3rem); font-weight: 700; }
h2 { font-size: 1.25rem; font-weight: 600; }
h3 { font-size: 1.05rem; font-weight: 600; }
p { margin: 0; }
a { color: var(--accent); }
.muted { color: var(--ink-3); font-size: .9rem; }
.hint { color: var(--ink-3); font-size: .85rem; margin-top: 6px; }
.link { font-weight: 500; text-decoration: none; }
.link:hover { text-decoration: underline; }
.link-btn { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Header ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--surface); border-bottom: 1px solid var(--line);
  padding-top: env(safe-area-inset-top, 0px);
}
.topbar-inner {
  max-width: 1120px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 50%; background: var(--accent); flex: none;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle cx='16' cy='16' r='16' fill='%23000'/%3E%3Cpath d='M9 18c3-6 8-9 14-9-1 7-5 12-12 12l-2 3' fill='none' stroke='%23fff' stroke-width='2.2' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'%3E%3Ccircle cx='16' cy='16' r='16' fill='%23000'/%3E%3Cpath d='M9 18c3-6 8-9 14-9-1 7-5 12-12 12l-2 3' fill='none' stroke='%23fff' stroke-width='2.2' stroke-linecap='round'/%3E%3C/svg%3E") center/contain no-repeat;
  background: linear-gradient(135deg, var(--accent), var(--water));
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-family: var(--font-display); font-size: 1.1rem; }
.brand-text small { color: var(--ink-3); font-size: .75rem; }
.tabs { display: flex; gap: 2px; margin-left: auto; overflow-x: auto; }
.tabs a {
  padding: 8px 12px; border-radius: 8px; text-decoration: none; color: var(--ink-2);
  font-weight: 500; font-size: .92rem; white-space: nowrap;
}
.tabs a:hover { background: var(--surface-2); }
.tabs a.active { background: var(--accent-soft); color: var(--accent); }
.tabs a.tab-cta { border: 1px solid var(--accent); color: var(--accent); }
.tabs a.tab-cta.active { background: var(--accent); color: var(--accent-ink); }
@media (max-width: 720px) {
  .topbar-inner { gap: 8px; }
  .tabs { order: 3; width: 100%; margin-left: 0; }
  .brand-text small { display: none; }
  #btnAdmin { margin-left: auto; }
}

/* ---------- Layout ---------- */
.page { max-width: 1120px; margin: 0 auto; padding: 24px 16px 48px; display: flex; flex-direction: column; gap: 20px; }
.tab-panel { display: flex; flex-direction: column; gap: 20px; }
.section-head { display: flex; flex-direction: column; gap: 8px; max-width: 70ch; }
.lede { color: var(--ink-2); font-size: 1rem; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }
.notice { background: var(--accent-soft); border-left: 4px solid var(--accent); padding: 12px 14px; border-radius: 8px; font-size: .92rem; }
.foot { max-width: 1120px; margin: 0 auto; padding: 16px 16px 32px; color: var(--ink-3); font-size: .8rem; border-top: 1px solid var(--line); }

/* ---------- KPI ---------- */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 860px) { .kpis { grid-template-columns: 1fr 1fr; } }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; border-top: 4px solid var(--ink-3); }
.kpi-open { border-top-color: var(--s-dangxuly); }
.kpi-done { border-top-color: var(--s-daxong); }
.kpi-relapse { border-top-color: var(--s-taiphat); }
.kpi-time { border-top-color: var(--water); }
.kpi-label { font-size: .8rem; color: var(--ink-2); text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.kpi-value { font-family: var(--font-display); font-size: 2.1rem; font-variant-numeric: tabular-nums; line-height: 1.1; }
.kpi-sub { font-size: .8rem; color: var(--ink-3); }

/* ---------- Map ---------- */
.map { height: 400px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface-2); z-index: 0; }
.map-sm { height: 300px; }
@media (max-width: 720px) { .map { height: 320px; } .map-sm { height: 260px; } }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: .82rem; color: var(--ink-2); }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; background: var(--ink-3); }
.s-moi { background: var(--s-moi); } .s-xacminh { background: var(--s-xacminh); } .s-dangxuly { background: var(--s-dangxuly); }
.s-daxong { background: var(--s-daxong); } .s-taiphat { background: var(--s-taiphat); }
.leaflet-popup-content-wrapper { border-radius: 8px; font-family: var(--font-body); }
.leaflet-popup-content { margin: 10px 12px; font-size: .88rem; line-height: 1.4; }
.leaflet-popup-content strong { display: block; margin-bottom: 2px; }
.pin { width: 100%; height: 100%; border-radius: 50%; border: 2px solid #fff; box-shadow: 0 1px 4px rgba(0,0,0,.35); }

/* ---------- Bars ---------- */
.bars { display: flex; flex-direction: column; gap: 8px; }
.bar-row { display: grid; grid-template-columns: minmax(90px, 32%) 1fr auto; align-items: center; gap: 10px; font-size: .9rem; }
.bar-row .bar-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { height: 12px; background: var(--surface-2); border-radius: 6px; overflow: hidden; display: flex; }
.bar-fill { height: 100%; background: var(--accent); }
.bar-fill.open { background: var(--s-dangxuly); }
.bar-num { font-variant-numeric: tabular-nums; color: var(--ink-2); min-width: 52px; text-align: right; }

/* ---------- Report list ---------- */
.report-list { display: flex; flex-direction: column; gap: 10px; }
.report { display: grid; grid-template-columns: 6px 1fr auto; gap: 12px; align-items: start; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px 12px 0; cursor: pointer; overflow: hidden; }
.report:hover { border-color: var(--accent); }
.report .sev { border-radius: 10px 0 0 10px; align-self: stretch; }
.sev-1 { background: var(--sev-1); } .sev-2 { background: var(--sev-2); } .sev-3 { background: var(--sev-3); }
.report-main { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.report-title { font-weight: 600; }
.report-meta { font-size: .82rem; color: var(--ink-3); display: flex; gap: 8px; flex-wrap: wrap; }
.report-desc { font-size: .88rem; color: var(--ink-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.compact .report-desc { display: none; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 3px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; white-space: nowrap; color: #fff; }
.pill.moi { background: var(--s-moi); } .pill.xacminh { background: var(--s-xacminh); } .pill.dangxuly { background: var(--s-dangxuly); }
.pill.daxong { background: var(--s-daxong); } .pill.taiphat { background: var(--s-taiphat); }
.pill.sample { background: var(--surface-2); color: var(--ink-2); font-weight: 500; }
.empty { color: var(--ink-3); padding: 24px; text-align: center; border: 1px dashed var(--line); border-radius: 10px; }

/* ---------- Filters / forms ---------- */
.filters { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
@media (max-width: 860px) { .filters { grid-template-columns: 1fr 1fr; } }
label { display: flex; flex-direction: column; gap: 4px; font-size: .85rem; font-weight: 500; color: var(--ink-2); }
.label-text { font-size: .85rem; font-weight: 500; color: var(--ink-2); display: block; margin-bottom: 4px; }
input, select, textarea {
  font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line);
  border-radius: 8px; padding: 9px 10px; width: 100%;
}
input[type="file"] { padding: 6px; }
textarea { resize: vertical; }
.req { color: var(--s-taiphat); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.span-2 { grid-column: span 2; }
@media (max-width: 720px) { .form-grid { grid-template-columns: 1fr; } .span-2 { grid-column: span 1; } }
fieldset { border: 0; padding: 0; margin: 0; }
legend { font-size: .85rem; font-weight: 500; color: var(--ink-2); margin-bottom: 6px; padding: 0; }
.severity { display: flex; flex-wrap: wrap; gap: 8px; }
.chip-radio { flex: 1 1 160px; }
.chip-radio input { position: absolute; opacity: 0; width: 0; height: 0; }
.chip-radio span { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; cursor: pointer; color: var(--ink); }
.chip-radio span small { color: var(--ink-3); font-weight: 400; font-size: .78rem; }
.chip-radio input:checked + span { border-color: var(--accent); background: var(--accent-soft); }
.chip-radio input:focus-visible + span { outline: 2px solid var(--accent); }
.form-actions { display: flex; align-items: center; gap: 14px; margin-top: 16px; flex-wrap: wrap; }
.form-msg { font-size: .9rem; color: var(--ink-2); }
.form-msg.err { color: var(--s-taiphat); }
.form-msg.ok { color: var(--s-daxong); }
.photo-preview { margin-top: 12px; display: flex; align-items: center; gap: 12px; }
.photo-preview img { max-height: 120px; border-radius: 8px; border: 1px solid var(--line); }
.btn { font: inherit; font-weight: 600; border-radius: 8px; padding: 9px 16px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; }
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; }
.btn-sm { padding: 6px 12px; font-size: .85rem; }
.btn[disabled] { opacity: .6; cursor: default; }
.btn.is-admin { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }

/* ---------- Causes ---------- */
.chain-head { margin-bottom: 12px; }
.chain-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; counter-reset: step; }
@media (max-width: 860px) { .chain-steps { grid-template-columns: 1fr; } }
.chain-steps li { counter-increment: step; background: var(--surface-2); border-radius: 10px; padding: 12px; display: flex; flex-direction: column; gap: 4px; font-size: .88rem; position: relative; }
.chain-steps li::before { content: counter(step); font-family: var(--font-display); font-weight: 700; color: var(--accent); font-size: 1.1rem; }
.chain-steps li span { color: var(--ink-2); }
.causes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 860px) { .causes { grid-template-columns: 1fr; } }
.cause { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; display: flex; flex-direction: column; gap: 10px; }
.cause header { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.cause-no { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font-weight: 700; font-size: .9rem; flex: none; }
.cause h3 { flex: 1; }
.cause ul { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 5px; font-size: .92rem; color: var(--ink-2); }
.cause ul strong { color: var(--ink); }
.verify { font-size: .85rem; background: var(--surface-2); padding: 8px 10px; border-radius: 8px; color: var(--ink-2); }
.tag { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; font-weight: 600; padding: 3px 8px; border-radius: 4px; background: var(--surface-2); color: var(--ink-2); }
.impacts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 12px; }
@media (max-width: 860px) { .impacts { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .impacts { grid-template-columns: 1fr; } }
.impacts div { display: flex; flex-direction: column; gap: 4px; font-size: .9rem; }
.impacts p { color: var(--ink-2); }

/* ---------- Actions ---------- */
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
@media (max-width: 860px) { .principles { grid-template-columns: 1fr 1fr; } }
.principles div { background: var(--accent-soft); border-radius: 10px; padding: 12px 14px; font-size: .9rem; display: flex; flex-direction: column; gap: 4px; }
.principles p { color: var(--ink-2); }
.progress { height: 10px; background: var(--surface-2); border-radius: 5px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--accent); transition: width .4s; }
.phase { display: flex; flex-direction: column; gap: 10px; }
.phase-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; border-left: 4px solid var(--accent); padding-left: 12px; }
.action-list { display: flex; flex-direction: column; gap: 10px; }
.action { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; }
.action.xong { opacity: .8; }
.action-title { font-weight: 600; }
.action-detail { grid-column: 1 / -1; font-size: .9rem; color: var(--ink-2); }
.action-meta { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .82rem; color: var(--ink-3); }
.action-meta b { color: var(--ink-2); font-weight: 500; }
.status-select { width: auto; padding: 5px 8px; font-size: .85rem; }
.pill.chua { background: var(--surface-2); color: var(--ink-2); } .pill.dang { background: var(--s-dangxuly); } .pill.xong { background: var(--s-daxong); }
.table-wrap { overflow-x: auto; margin-top: 10px; }
.metrics { border-collapse: collapse; width: 100%; font-size: .9rem; min-width: 560px; }
.metrics th, .metrics td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.metrics th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--ink-2); }

/* ---------- Drawer ---------- */
.drawer { position: fixed; inset: 0; z-index: 100; }
.drawer-backdrop { position: absolute; inset: 0; background: rgba(10, 20, 14, .45); }
.drawer-panel { position: absolute; top: 0; right: 0; bottom: 0; width: min(520px, 100%); background: var(--surface); overflow-y: auto; padding: 20px 20px 32px; padding-top: calc(20px + env(safe-area-inset-top, 0px)); box-shadow: -8px 0 32px rgba(0,0,0,.2); display: flex; flex-direction: column; gap: 14px; }
.drawer-narrow { width: min(400px, 100%); }
.drawer-close { position: absolute; top: 10px; right: 12px; background: var(--surface-2); border: 0; width: 34px; height: 34px; border-radius: 50%; font-size: 1.3rem; cursor: pointer; color: var(--ink); }
.detail-photo { width: 100%; border-radius: 10px; border: 1px solid var(--line); }
.detail-map { height: 200px; }
.detail-grid { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; font-size: .9rem; }
.detail-grid dt { color: var(--ink-3); }
.detail-grid dd { margin: 0; }
.admin-box { border-top: 1px solid var(--line); padding-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 999px; font-size: .9rem; z-index: 200; box-shadow: var(--shadow); max-width: calc(100% - 32px); }

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