:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --surface-alt: #eef0f4;
  --border: #e1e4ea;
  --ink: #171923;
  --ink-muted: #6b7280;
  --ink-faint: #9aa1af;

  --sidebar-bg: #0f1424;
  --sidebar-ink: #c7cbdb;
  --sidebar-ink-active: #ffffff;
  --sidebar-border: #232a42;

  --accent: #2452d9;
  --accent-dark: #1b3fae;
  --accent-soft: #e8edfc;

  --success: #1f9d62;
  --success-soft: #e5f6ec;
  --warning: #b7791f;
  --warning-soft: #faf1de;
  --danger: #c7402c;
  --danger-soft: #fbe9e6;

  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Consolas", monospace;
  --sans: -apple-system, "Segoe UI", "Helvetica Neue", Roboto, Arial, sans-serif;

  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(15, 20, 36, 0.04);
  --shadow-md: 0 4px 16px rgba(15, 20, 36, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

button, input, select { font-family: inherit; font-size: inherit; }

/* ---------- Auth page ---------- */

.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 20% 20%, #17204a 0%, #0f1424 55%, #0a0d18 100%);
  padding: 24px;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border-radius: 18px;
  box-shadow: var(--shadow-md);
  padding: 36px 32px;
}

.auth-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.auth-brand .mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
}

.auth-brand .name {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: -0.01em;
}

.auth-card h1 {
  font-size: 20px;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.auth-card .sub {
  color: var(--ink-muted);
  font-size: 13px;
  margin: 0 0 24px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.field label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.field input,
.field select,
.field textarea {
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--ink);
  width: 100%;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field .error {
  color: var(--danger);
  font-size: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid transparent;
  border-radius: 9px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}
.btn-primary:hover { background: var(--accent-dark); }

.btn-outline {
  background: transparent;
  border-color: var(--border);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--ink-faint); }

.btn-danger-outline {
  background: transparent;
  border-color: var(--danger);
  color: var(--danger);
}
.btn-danger-outline:hover { background: var(--danger-soft); }

.btn-sm { padding: 7px 12px; font-size: 12px; }

.auth-foot {
  margin-top: 20px;
  font-size: 12px;
  color: var(--ink-faint);
  text-align: center;
}

/* ---------- Admin shell ---------- */

.admin-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 232px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  color: var(--sidebar-ink);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  gap: 24px;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 8px;
}

.sidebar .brand .mark {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  flex-shrink: 0;
}

.sidebar .brand .name {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  color: #fff;
  line-height: 1.3;
}

.sidebar .brand .name small {
  display: block;
  font-weight: 400;
  color: var(--sidebar-ink);
  font-size: 11px;
}

.nav-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #5c6383;
  padding: 0 12px;
  margin-bottom: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--sidebar-ink);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
}

.nav-link.active {
  background: var(--accent);
  color: #fff;
}

.sidebar-foot {
  margin-top: auto;
  border-top: 1px solid var(--sidebar-border);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 4px;
}

.sidebar-user .avatar {
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
}

.sidebar-user .who {
  min-width: 0;
}

.sidebar-user .who .n {
  color: #fff;
  font-size: 12.5px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user .who .e {
  color: #7c839f;
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--sidebar-border);
  color: var(--sidebar-ink);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}
.logout-btn:hover {
  border-color: #3a4262;
  color: #fff;
}

.main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.topbar h1 {
  font-size: 18px;
  margin: 0;
  letter-spacing: -0.01em;
}

.topbar .crumb {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 3px;
}

.content {
  padding: 28px 32px 56px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.flash {
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 500;
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid transparent;
}

/* ---------- Stat cards ---------- */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}

.stat-card .label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.stat-card .value {
  font-family: var(--mono);
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.dot { width: 8px; height: 8px; border-radius: 999px; display: inline-block; }
.dot.total { background: var(--accent); }
.dot.active { background: var(--success); }
.dot.trial { background: var(--warning); }
.dot.suspended { background: var(--danger); }

/* ---------- Cards / panels ---------- */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.panel-head h2 {
  font-size: 15px;
  margin: 0;
  letter-spacing: -0.005em;
}

.panel-body { padding: 20px; }

/* ---------- Table ---------- */

.table-wrap { overflow-x: auto; }

table.grid {
  width: 100%;
  border-collapse: collapse;
}

table.grid th {
  text-align: left;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: var(--surface-alt);
  padding: 10px 16px;
  white-space: nowrap;
}

table.grid td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 13.5px;
  vertical-align: middle;
}

table.grid tr:hover td { background: var(--surface-alt); }

table.grid td.num { font-variant-numeric: tabular-nums; }

.cell-primary { font-weight: 600; }
.cell-muted { color: var(--ink-muted); font-size: 12.5px; }

/* ---------- Status pill ---------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: capitalize;
}
.pill.active { background: var(--success-soft); color: var(--success); }
.pill.trial { background: var(--warning-soft); color: var(--warning); }
.pill.suspended { background: var(--danger-soft); color: var(--danger); }
.pill.paid { background: var(--success-soft); color: var(--success); }
.pill.pending { background: var(--warning-soft); color: var(--warning); }
.pill.failed { background: var(--danger-soft); color: var(--danger); }

/* ---------- Filter bar ---------- */

.filter-bar {
  display: flex;
  gap: 10px;
  align-items: center;
}

.filter-bar input[type="text"],
.filter-bar select {
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 8px 12px;
  background: var(--surface);
  font-size: 13px;
}

.filter-bar input[type="text"] { min-width: 220px; }

/* ---------- Pagination ---------- */

.pagination {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 14px 20px;
  border-top: 1px solid var(--border);
}

.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 30px;
  padding: 0 8px;
  border-radius: 7px;
  font-size: 12.5px;
  font-family: var(--mono);
  color: var(--ink-muted);
  border: 1px solid transparent;
}

.pagination a:hover { background: var(--surface-alt); }
.pagination .active span { background: var(--accent); color: #fff; }
.pagination .disabled span { color: var(--ink-faint); }

/* ---------- Detail page ---------- */

.detail-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
  align-items: start;
}

.info-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}

.info-item .k {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 4px;
}

.info-item .v { font-size: 14px; font-weight: 500; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

.empty-state {
  padding: 32px 20px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 13px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--ink-muted);
  font-family: var(--mono);
  margin-bottom: 4px;
}
.back-link:hover { color: var(--accent); }

@media (max-width: 960px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .detail-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}