:root {
  --bg: #e6eaee;
  --panel: #ffffff;
  --ink: #1c2733;
  --muted: #5b6876;
  --line: #c9d1d9;
  --rec: #e0322b;
  --ok: #2f6f73;
  --warn: #9a6a00;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Archivo", "Segoe UI", system-ui, sans-serif; background: var(--bg); color: var(--ink); }
h1 { margin: 0; font-size: 1.4rem; font-weight: 800; letter-spacing: -0.01em; }
h2 { margin: 0; font-size: 1.05rem; font-weight: 700; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--ok); outline-offset: 2px; }
.muted { color: var(--muted); }

.top { display: flex; align-items: center; justify-content: space-between; padding: 18px 24px; }
.ghost {
  background: transparent; border: 1px solid var(--line); color: var(--ink);
  padding: 8px 14px; border-radius: 6px; text-decoration: none; display: inline-block;
}
.ghost:hover { background: var(--panel); }
.primary { background: var(--ink); color: var(--panel); border: 0; padding: 10px 20px; border-radius: 6px; font-weight: 600; }
.primary:disabled { opacity: 0.5; }

.tabs { display: flex; gap: 4px; padding: 0 24px; border-bottom: 1px solid var(--line); }
.tabs button {
  background: none; border: 0; padding: 10px 14px; font-weight: 600; color: var(--muted);
  border-bottom: 3px solid transparent; margin-bottom: -1px;
}
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--ink); }

.wrap { max-width: 960px; margin: 0 auto; padding: 20px 24px 100px; }

/* ===== Cài đặt ===== */
.panel { background: var(--panel); border-radius: 10px; padding: 18px 20px; margin-bottom: 14px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.panel-desc { margin: 4px 0 0; color: var(--muted); font-size: 0.9rem; }
.panel-body { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
.panel.off .panel-body { opacity: 0.55; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field.full, .field.check { grid-column: 1 / -1; }
.field > label { font-weight: 600; font-size: 0.9rem; }
.field input[type="text"], .field input[type="password"], .field input[type="number"], .field select, .field textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel);
}
.field textarea { min-height: 110px; font-family: ui-monospace, Consolas, monospace; font-size: 0.8rem; }
.field.check label { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.help { color: var(--muted); font-size: 0.8rem; }
.panel-foot { grid-column: 1 / -1; display: flex; align-items: center; gap: 12px; }
.test-result { font-size: 0.9rem; }
.test-result.ok { color: var(--ok); }
.test-result.err { color: var(--rec); }

.switch { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--muted); cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch .track { width: 40px; height: 22px; border-radius: 11px; background: var(--line); position: relative; transition: background 0.15s; }
.switch .track::after {
  content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--panel); transition: transform 0.15s;
}
.switch input:checked + .track { background: var(--ok); }
.switch input:checked + .track::after { transform: translateX(18px); }
.switch input:focus-visible + .track { outline: 3px solid var(--ok); outline-offset: 2px; }

.savebar {
  position: fixed; left: 0; right: 0; bottom: 0; background: var(--panel);
  border-top: 1px solid var(--line); padding: 12px 24px;
  display: flex; justify-content: flex-end; align-items: center; gap: 16px;
}

/* ===== Lịch sử ===== */
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar input { flex: 1; min-width: 200px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; }
.table-wrap { overflow-x: auto; background: var(--panel); border-radius: 10px; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--bg); vertical-align: top; }
th { font-weight: 600; color: var(--muted); white-space: nowrap; }
td.code { font-weight: 700; }
td a { color: var(--ok); }
.files a { margin-right: 10px; }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.8rem;
  margin: 0 4px 4px 0; border: 1px solid currentColor;
}
.badge.done { color: var(--ok); }
.badge.error { color: var(--rec); }
.badge.pending, .badge.uploading { color: var(--warn); }
.empty { padding: 32px; text-align: center; color: var(--muted); }
.more { margin-top: 12px; }

.toast {
  position: fixed; bottom: 72px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: var(--panel); padding: 10px 16px; border-radius: 6px;
}
.toast.err { background: var(--rec); }

@media (max-width: 700px) {
  .panel-body { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .switch .track, .switch .track::after { transition: none; }
}

/* ===== Dùng chung: tài khoản, hộp thoại, đăng nhập ===== */
.top-right { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.who { color: var(--muted); font-size: 0.9rem; margin-right: 4px; }
.who strong { color: var(--ink); font-weight: 600; }
.ghost.small { padding: 4px 10px; font-size: 0.85rem; }
.link-btn { background: none; border: 0; padding: 0; color: var(--ok); text-decoration: underline; font-size: 0.85rem; }
.notice {
  background: var(--panel); border-left: 4px solid var(--warn); padding: 10px 14px;
  margin: 0 24px 0; border-radius: 0 6px 6px 0; font-size: 0.9rem;
}

.dialog {
  border: 0; border-radius: 10px; padding: 22px; width: min(440px, calc(100vw - 32px));
  background: var(--panel); color: var(--ink); box-shadow: 0 10px 40px rgba(28, 39, 51, 0.25);
}
.dialog::backdrop { background: rgba(28, 39, 51, 0.45); }
.dialog h2 { margin-bottom: 4px; }
.dialog-fields { display: flex; flex-direction: column; gap: 12px; margin: 14px 0; }
.dialog .field input, .dialog .field select {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel);
}
.dialog-error { color: var(--rec); font-size: 0.9rem; margin: 0 0 10px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.tag { font-size: 0.8rem; color: var(--muted); }
.tag.off { color: var(--rec); }
.sub { display: block; color: var(--muted); font-size: 0.8rem; margin-top: 2px; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 12px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.filters input, .filters select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.filters input { flex: 1; min-width: 200px; }
.readonly-value {
  padding: 8px 10px; border: 1px dashed var(--line); border-radius: 6px;
  font-family: ui-monospace, Consolas, monospace; font-size: 0.85rem; word-break: break-all;
}

/* ===== Gói dịch vụ & thanh toán ===== */
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 0.8rem; font-weight: 600; white-space: nowrap; }
.pill.active { background: #e3f0ef; color: var(--ok); }
.pill.due { background: #fbf0d9; color: var(--warn); }
.pill.overdue, .pill.unpaid { background: #fbe4e3; color: var(--rec); }
.pill.none { background: var(--bg); color: var(--muted); }

.alert {
  margin: 12px 24px 0; padding: 12px 16px; border-radius: 8px; background: var(--panel);
  border-left: 4px solid var(--warn); display: flex; gap: 12px; align-items: flex-start; justify-content: space-between;
}
.alert.bad { border-left-color: var(--rec); }
.alert p { margin: 0; }
.alert .alert-title { font-weight: 700; margin-bottom: 2px; }
.alert .alert-time { color: var(--muted); font-size: 0.8rem; margin-top: 4px; }
.wrap > .alert { margin: 0 0 14px; }

.dialog.wide { width: min(720px, calc(100vw - 32px)); }
.dialog textarea { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); font: inherit; }
.dialog-note { background: var(--bg); border-radius: 6px; padding: 10px 12px; margin-bottom: 12px; font-size: 0.9rem; }
.dialog-body { margin: 12px 0; max-height: 60vh; overflow: auto; }

.plan-grid { display: grid; grid-template-columns: 110px 1fr 170px 190px; gap: 10px 16px; align-items: center; }
.plan-grid .plan-code { font-weight: 600; color: var(--muted); }
.plan-grid input { width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }
.plan-grid .head { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
.inline-field { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
.inline-field input { width: 90px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; margin: 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-weight: 600; }
@media (max-width: 700px) { .plan-grid { grid-template-columns: 1fr; } .plan-grid .head { display: none; } }

.meter { display: inline-block; width: 120px; height: 8px; border-radius: 4px; background: var(--bg); overflow: hidden; vertical-align: middle; }
.meter > span { display: block; height: 100%; background: var(--ok); }
.meter.due > span { background: var(--warn); }
.meter.overdue > span { background: var(--rec); }
.quota-line { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: 4px; font-size: 0.85rem; }
.settings-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px 20px; margin-top: 18px; }
.settings-row .field input, .settings-row .field select { padding: 8px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); }