:root {
  --page-bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #f1f5f9;
  --surface-tint: #eef6ff;
  --brand: #2563eb;
  --brand-strong: #1d4ed8;
  --accent: #d97706;
  --accent-bright: #f59e0b;
  --danger: #dc2626;
  --success: #16a34a;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius: 8px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  letter-spacing: 0;
}

a {
  color: var(--brand);
}

h1,
h2,
h3 {
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 1.5rem;
  font-size: 1.85rem;
}

h2 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.container-narrow {
  max-width: 520px;
}

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

.small-text {
  font-size: 0.85rem;
}

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.page-head h1 {
  margin: 0;
}

.page-description {
  margin-top: 0.35rem;
  color: var(--text-muted);
}

.back-link-wrap {
  margin-bottom: 1.5rem;
}

.back-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:hover {
  color: var(--text);
}

.stack {
  display: grid;
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.card + .card {
  margin-top: 1.5rem;
}

.section-title-primary {
  color: var(--brand);
}

.section-title-muted {
  color: var(--text-muted);
}

.actions-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.inline-form {
  display: inline-flex;
}

.past-row {
  opacity: 0.6;
}

.empty-state {
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition:
    background 0.15s,
    border-color 0.15s,
    color 0.15s,
    transform 0.1s,
    box-shadow 0.15s;
  white-space: nowrap;
}

.btn:hover {
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary:hover {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
}

.btn-gold {
  background: var(--accent-bright);
  color: #111827;
  border-color: var(--accent-bright);
}

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

.btn-danger:hover {
  background: #fef2f2;
  border-color: #fca5a5;
}

.btn-ghost {
  background: #fff;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--surface-soft);
  color: var(--text);
  border-color: #cbd5e1;
}

.btn-sm {
  padding: 0.42rem 0.7rem;
  font-size: 0.78rem;
}

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0;
  color: var(--brand);
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0;
  text-decoration: none;
}

.nav-brand span {
  color: var(--text);
}

.nav-toggle {
  display: none;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    color 0.15s,
    background 0.15s,
    box-shadow 0.15s;
}

.nav-links a:hover {
  background: var(--surface-soft);
  color: var(--text);
}

.nav-links a.active {
  background: #dbeafe;
  color: var(--brand-strong);
  box-shadow: inset 0 0 0 1px #bfdbfe;
}

.nav-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.nav-user strong {
  color: var(--text);
}

.logout-form {
  display: inline-flex;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"],
.form-group input[type="date"],
.form-group input[type="time"],
.form-group select {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.95rem;
  transition:
    border-color 0.15s,
    box-shadow 0.15s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
  outline: none;
}

.field-help {
  margin-top: 0.3rem;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.field-error {
  margin-top: 0.3rem;
  color: #b91c1c;
  font-size: 0.82rem;
}

.form-errors {
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius);
  color: #b91c1c;
  font-size: 0.88rem;
}

.messages {
  margin-bottom: 1.5rem;
  list-style: none;
}

.messages li {
  margin-bottom: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.messages li.success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
}

.messages li.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #b91c1c;
}

.messages li.info {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: var(--brand-strong);
}

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

th {
  padding: 0.6rem 0.85rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0;
  text-align: left;
  text-transform: uppercase;
}

td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

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

tr:hover td {
  background: var(--surface-soft);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #eff6ff;
  color: var(--brand-strong);
  font-size: 0.75rem;
  font-weight: 700;
}

.crew-seat-label {
  color: var(--text);
  font-weight: 800;
}

.badge-admin {
  background: #fef3c7;
  color: #92400e;
}

@media (max-width: 760px) {
  .site-nav {
    min-height: 56px;
    height: auto;
    padding: 0.55rem 1rem;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    display: none;
    flex-basis: 100%;
    width: 100%;
    padding-top: 0.75rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .site-nav.nav-open .nav-menu {
    display: flex;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .nav-links a {
    padding: 0.65rem 0.75rem;
  }

  .nav-user {
    justify-content: space-between;
    border-top: 1px solid var(--border);
    padding-top: 0.75rem;
    flex-wrap: wrap;
  }
}