:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --border: #e2e4e9;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --success: #059669;
  --radius: 10px;
}

* { 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);
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.card h1 {
  font-size: 20px;
  margin: 0 0 6px;
}

.card p.subtitle {
  color: var(--muted);
  margin: 0 0 24px;
  font-size: 14px;
}

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  margin-bottom: 16px;
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
}

button, .btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}

button:hover, .btn:hover { background: var(--primary-dark); }

button.danger { background: var(--danger); padding: 6px 10px; font-size: 13px; }
button.danger:hover { background: var(--danger-dark); }

.error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}

.success-box {
  text-align: center;
}

.success-box .check {
  font-size: 40px;
  margin-bottom: 8px;
}

/* Admin layout */
.admin-wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.admin-header h1 { font-size: 22px; margin: 0; }

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

.panel h2 {
  font-size: 16px;
  margin: 0 0 16px;
}

.panel-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.panel-header-row h2 { margin: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}

th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

tr:last-child td { border-bottom: none; }

.pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.pill.unused { background: #ecfdf5; color: var(--success); }
.pill.used { background: #f3f4f6; color: var(--muted); }

.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.empty { color: var(--muted); font-size: 14px; padding: 8px 0; }

.new-code-banner {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}
.new-code-banner .mono { font-size: 16px; font-weight: 700; }

form.inline { display: inline; }

.logout-link {
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}
.logout-link:hover { text-decoration: underline; }