/* ThoCam License — giao diện. Không tải gì từ bên ngoài; font hệ thống. */
:root {
  --bg: #F8FAFC;
  --card: #FFFFFF;
  --divider: #E2E8F0;
  --text: #0F172A;
  --muted: #475569;
  --accent: #0369A1;
  --accent-fg: #FFFFFF;
  --accent-soft: #E0F2FE;
  --danger: #B91C1C;
  --danger-soft: #FEE2E2;
  --ok: #047857;
  --ok-soft: #D1FAE5;
  --warn: #92400E;
  --warn-soft: #FEF3C7;
  --focus: #0369A1;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 1px 3px rgba(15, 23, 42, .08);
  --radius: 12px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #090D16;
    --card: #111827;
    --divider: #1E293B;
    --text: #E2E8F0;
    --muted: #94A3B8;
    --accent: #38BDF8;
    --accent-fg: #04131F;
    --accent-soft: #0C2A3D;
    --danger: #F87171;
    --danger-soft: #3B1519;
    --ok: #34D399;
    --ok-soft: #0B2E24;
    --warn: #FBBF24;
    --warn-soft: #33260A;
    --focus: #7DD3FC;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 var(--font); min-height: 100vh; display: flex; flex-direction: column;
}
a { color: var(--accent); text-underline-offset: 2px; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .6em; }
h1 { font-size: 1.6rem; letter-spacing: -.01em; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; margin-top: 1.2em; }
p { margin: 0 0 .8em; }
code { font-family: var(--mono); font-size: .92em; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.nowrap { white-space: nowrap; }
.pre { white-space: pre-wrap; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; left: 8px; top: -48px; background: var(--accent); color: var(--accent-fg); padding: 8px 12px; border-radius: 8px; z-index: 10; }
.skip:focus { top: 8px; }

.container { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }
main.container { flex: 1; padding-top: 24px; padding-bottom: 48px; }
main:focus { outline: none; }

/* thanh trên */
.topbar { background: var(--card); border-bottom: 1px solid var(--divider); }
.topbar-inner { max-width: 1080px; margin: 0 auto; padding: 10px 16px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--text); text-decoration: none; }
.brand .logo { color: var(--accent); }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-weight: 500; }
.nav a:hover { color: var(--text); background: var(--accent-soft); }
.nav a.active { color: var(--accent); background: var(--accent-soft); }
.topbar-end { margin-left: auto; display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.lang { font-size: .9rem; }
.logout { display: flex; align-items: center; gap: 8px; margin: 0; }
.who { color: var(--muted); font-size: .85rem; max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.footer { border-top: 1px solid var(--divider); color: var(--muted); font-size: .85rem; padding: 16px 0; }

/* thẻ */
.card { background: var(--card); border: 1px solid var(--divider); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin-bottom: 16px; }
.card.narrow { max-width: 560px; margin: 32px auto; }
.card.empty { color: var(--muted); }
.stack > .card + .card { margin-top: 0; }
.page-head { margin-bottom: 16px; }
.page-head.row, .row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.row h2 { margin: 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 16px; }
.grid2 > .card { margin-bottom: 0; }
.grid2 + .card { margin-top: 16px; }
.span2 { grid-column: 1 / -1; }

/* trang chủ */
.hero { max-width: 640px; margin: 40px auto; text-align: center; }
.hero h1 { font-size: 2rem; }
.lead { font-size: 1.1rem; color: var(--muted); }
.points { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 8px; text-align: left; }
.points li { background: var(--card); border: 1px solid var(--divider); border-radius: 10px; padding: 10px 14px 10px 38px; position: relative; }
.points li::before { content: ""; position: absolute; left: 14px; top: 50%; width: 12px; height: 12px; margin-top: -6px; border-radius: 50%; background: var(--accent); opacity: .85; }

/* nút */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 40px; padding: 8px 16px; border-radius: 10px; border: 1px solid transparent;
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; line-height: 1.2;
}
.btn-sm { min-height: 32px; padding: 4px 10px; font-size: .85rem; border-radius: 8px; }
.btn-lg { min-height: 48px; padding: 12px 22px; font-size: 1.02rem; }
.btn-primary { background: var(--accent); color: var(--accent-fg); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--divider); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-danger { background: transparent; color: var(--danger); border-color: currentColor; }
.btn-danger:hover { background: var(--danger-soft); }

/* huy hiệu */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: .8rem; font-weight: 600; white-space: nowrap; }
.badge-active { background: var(--ok-soft); color: var(--ok); }
.badge-revoked { background: var(--danger-soft); color: var(--danger); }
.badge-expired { background: var(--divider); color: var(--muted); }
.badge-expiring { background: var(--warn-soft); color: var(--warn); }
.badge-admin { background: var(--accent-soft); color: var(--accent); }
.badge-member { background: var(--divider); color: var(--muted); }

/* mã */
.key { font-family: var(--mono); font-size: 1rem; letter-spacing: .04em; font-weight: 600; white-space: nowrap; }
.key-link { text-decoration: none; }
.key-link:hover .key { text-decoration: underline; }
.key-title .key { font-size: 1.3rem; }
.key-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.license-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.license .key { font-size: 1.15rem; }

/* danh sách thông tin */
.facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px 20px; margin: 0; }
.facts dt { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }
.facts dd { margin: 2px 0 0; font-weight: 500; overflow-wrap: anywhere; }
.facts .span-all { grid-column: 1 / -1; }

.devices { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.device { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 12px; border: 1px solid var(--divider); border-radius: 10px; flex-wrap: wrap; }
.device-main { display: flex; flex-direction: column; min-width: 0; }
.device-main strong { overflow-wrap: anywhere; }
.device form { margin: 0; }

.created-keys { margin: 16px 0 0; padding-left: 1.6em; display: grid; gap: 6px; }
.created-keys li { padding: 2px 0; }
.created-keys li a { margin-right: 8px; text-decoration: none; }

.howto ol { margin: 0; padding-left: 1.3em; display: grid; gap: 6px; }

/* bảng */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--divider); border-radius: 10px; }
.table { width: 100%; border-collapse: collapse; background: var(--card); }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--divider); vertical-align: middle; }
.table th { font-size: .78rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; white-space: nowrap; }
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover { background: var(--accent-soft); }
.table.small td { font-size: .85rem; }
.table form { margin: 0; }
code.detail { font-size: .78rem; color: var(--muted); overflow-wrap: anywhere; display: inline-block; max-width: 420px; }
details { margin-top: 12px; }
summary { cursor: pointer; color: var(--muted); padding: 6px 0; }
.pager { display: flex; gap: 8px; justify-content: flex-end; margin-top: 12px; }

/* form */
.form { display: grid; gap: 12px; }
.form .actions { margin-top: 8px; }
.filters { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.field.grow { flex: 1 1 240px; }
.field.check { flex-direction: row; align-items: center; gap: 8px; min-height: 40px; }
.field.buttons { flex-direction: row; gap: 8px; }
fieldset.field { border: 0; padding: 0; margin: 0; }
legend { font-weight: 600; font-size: .9rem; padding: 0; margin-bottom: 4px; }
label { font-weight: 600; font-size: .9rem; }
.radio { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-height: 40px; }
.radio label { font-weight: 500; }
.hint { color: var(--muted); font-size: .82rem; margin: 0; }
input[type="text"], input[type="email"], input[type="search"], input[type="number"], input[type="date"], input:not([type]), select, textarea {
  font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--divider);
  border-radius: 8px; padding: 8px 10px; min-height: 40px; width: 100%; max-width: 100%;
}
input[type="date"] { width: auto; }
input:disabled { opacity: .55; }
textarea { resize: vertical; }
input[type="checkbox"], input[type="radio"] { width: 18px; height: 18px; accent-color: var(--accent); margin: 0; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--accent); }

.flash { padding: 10px 14px; border-radius: 10px; margin-bottom: 16px; font-weight: 500; }
.flash-ok { background: var(--ok-soft); color: var(--ok); }
.flash-err { background: var(--danger-soft); color: var(--danger); }

@media (max-width: 640px) {
  h1 { font-size: 1.35rem; }
  .hero { margin: 16px auto; }
  .hero h1 { font-size: 1.6rem; }
  .card { padding: 16px; }
  .topbar-end { margin-left: 0; width: 100%; justify-content: space-between; }
  .who { max-width: 140px; }
  .key-title .key { font-size: 1.05rem; }
  .license .key { font-size: 1rem; }
}
@media (prefers-reduced-motion: no-preference) {
  .btn, .nav a { transition: background-color .15s, filter .15s; }
}

/* ---- mua trên web ---- */
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin: 16px 0; }
.plans .card { display: flex; flex-direction: column; gap: 8px; margin: 0; }
.plans .card .btn { margin-top: auto; align-self: flex-start; }
.plan-selected { outline: 2px solid var(--accent); }
.price { font-size: 1.6rem; font-weight: 700; margin: 0; }
.notice { background: var(--warn-soft); color: var(--warn); }
.card.notice { border-color: transparent; }
.confirm .field.check label { line-height: 1.5; }
.policy-links, .contact-list { padding-left: 1.2em; }
.pay-grid { display: grid; grid-template-columns: minmax(220px, 320px) 1fr; gap: 16px; align-items: start; }
.pay-grid > .card { margin: 0; }
.qr-card { text-align: center; }
.qr-card svg.qr { width: 100%; max-width: 280px; height: auto; display: block; margin: 0 auto 8px; border-radius: 8px; }
.pay-facts dd { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.copy-val { word-break: break-all; }
.order-code { font-size: 1.1rem; font-weight: 700; }
.badge-pending { background: var(--warn-soft); color: var(--warn); }
.badge-paid { background: var(--ok-soft); color: var(--ok); }
.badge-cancelled, .badge-refunded { background: var(--danger-soft); color: var(--danger); }
.tabs { flex-wrap: wrap; }
.inline-form { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.footer p { margin: 4px 0; }
.footer .seller { word-break: break-word; }
.bct-badge { display: inline-block; padding: 4px 10px; border: 1px solid var(--divider); border-radius: 6px; font-weight: 600; text-decoration: none; }
.policy h2 { margin-top: 1.2em; }
@media (max-width: 640px) {
  .pay-grid { grid-template-columns: 1fr; }
}