:root {
  color-scheme: light dark;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --border: #dbdfe4;
  --text: #1c2128;
  --muted: #6b7280;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --warning: #d97706;
  --radius: 8px;
}

/* Dark mode applies automatically from the OS/browser preference, unless an
   admin has explicitly chosen "light" (see [data-theme="light"] below) or
   this is a page for a logged-in admin who explicitly chose "dark" (see
   [data-theme="dark"] below, which applies regardless of OS preference). */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171c;
    --surface: #1c2027;
    --border: #2c313a;
    --text: #e6e8eb;
    --muted: #9aa2ad;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --warning: #f59e0b;
  }
}

:root[data-theme="dark"] {
  --bg: #14171c;
  --surface: #1c2027;
  --border: #2c313a;
  --text: #e6e8eb;
  --muted: #9aa2ad;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --warning: #f59e0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.topbar nav a {
  margin-right: 18px;
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
}

.topbar nav a:hover { color: var(--accent); }

.topbar .brand { font-weight: 700; }

.container {
  max-width: 1300px;
  margin: 32px auto;
  padding: 0 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

h1 { font-size: 1.4rem; margin-top: 0; }
h2 { font-size: 1.15rem; }

/* Lets a wide table scroll within its own card instead of overflowing past
   the card's background (or forcing the whole page to scroll sideways). */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th { color: var(--muted); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: .03em; }

/* Not display:flex — a flex table-cell can mis-stretch relative to sibling
   cells once an adjacent column (e.g. Status) wraps to multiple lines,
   throwing off the row's border-bottom line right at this column. */
.actions { white-space: nowrap; }
.actions > * { margin-right: 8px; }
.actions > *:last-child { margin-right: 0; }

.btn {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  cursor: pointer;
  font-family: inherit;
}

.btn:hover { border-color: var(--accent); color: var(--accent); }

.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }

.btn-danger { color: var(--danger); }
.btn-danger:hover { background: var(--danger); border-color: var(--danger); color: #fff; }

.btn-sm { padding: 5px 10px; font-size: 0.82rem; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--border);
  margin: 2px 4px 2px 0;
}

.badge-pending { color: var(--muted); }
.badge-sms_sent { color: var(--accent); border-color: var(--accent); }
.badge-enrolled { color: var(--success); border-color: var(--success); }
.badge-failed, .badge-sms_failed { color: var(--danger); border-color: var(--danger); }
.badge-active { color: var(--success); border-color: var(--success); }
.badge-inactive { color: var(--danger); border-color: var(--danger); }
.badge-expired { color: var(--warning); border-color: var(--warning); }

.log-avatar {
  width: 28px;
  height: 28px;
  object-fit: cover;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 8px;
  border: 1px solid var(--border);
}

.pagination { display: flex; gap: 8px; align-items: center; margin-top: 16px; }

.log-row { cursor: pointer; }
.log-row:hover { background: rgba(127,127,127,.08); }
.log-detail > td { background: rgba(127,127,127,.04); padding: 0; }
.log-detail-inner { padding: 12px 16px; display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; }

form.stacked label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin: 16px 0 6px;
}

form.stacked input[type="text"],
form.stacked input[type="tel"],
form.stacked input[type="date"],
form.stacked input[type="password"],
form.stacked textarea {
  width: 100%;
  padding: 9px 11px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
}

.hint { color: var(--muted); font-size: 0.8rem; margin-top: 4px; }

.flash {
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.flash-success { background: rgba(22,163,74,.12); color: var(--success); border: 1px solid var(--success); }
.flash-error { background: rgba(220,38,38,.12); color: var(--danger); border: 1px solid var(--danger); }

.center-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-actions { margin-top: 22px; display: flex; gap: 10px; }

.muted { color: var(--muted); }

video, canvas { max-width: 100%; border-radius: var(--radius); background: #000; }