:root {
  --bg: #f7f8fb;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #6b7280;
  --primary: #1d4ed8;
  --primary-light: #dbeafe;
  --border: #e5e7eb;
  --danger: #b91c1c;
  --success: #15803d;
  --shadow: 0 10px 25px rgba(0,0,0,0.08);
  --radius: 12px;
  --font: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
}

a {
  color: var(--primary);
  text-decoration: none;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 24px;
}

h1, h2, h3 {
  margin-top: 0;
}

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

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

textarea {
  min-height: 90px;
}

button, .button {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
}

button.secondary, .button.secondary {
  background: #111827;
}

button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.small {
  font-size: 13px;
  color: var(--muted);
}

.notice {
  padding: 12px 14px;
  border-radius: 8px;
  background: #eff6ff;
  color: #1e3a8a;
  margin-bottom: 16px;
}

.notice.error {
  background: #fef2f2;
  color: var(--danger);
}

.notice.success {
  background: #ecfdf3;
  color: var(--success);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

@media (max-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.nav {
  background: #111827;
  color: #fff;
  padding: 12px 24px;
}

.nav a {
  color: #fff;
  margin-right: 16px;
}

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

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

.table th {
  background: #f3f4f6;
  font-weight: 600;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  background: #e5e7eb;
  font-size: 12px;
}

.calendar {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  background: #fff;
}

.calendar-month {
  margin-bottom: 24px;
}

.calendar-header {
  font-weight: 700;
  margin-bottom: 8px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
}

.calendar-day-name {
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.calendar-day {
  text-align: center;
  padding: 10px 6px;
  border-radius: 6px;
  font-size: 13px;
}

.calendar-day.disabled {
  color: #cbd5e1;
  background: #f8fafc;
}

.calendar-day.allowed {
  background: #f1f5f9;
  cursor: pointer;
}

.calendar-day.selected {
  background: var(--primary);
  color: #fff;
}

.calendar-day.placeholder {
  background: transparent;
}

.loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid #cbd5e1;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 8px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.copy-wrap {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.copy-status {
  font-size: 13px;
  color: var(--success);
}

.readonly-textarea {
  min-height: 60px;
  width: 100%;
  font-size: 13px;
}

.inline-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}