:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --success-soft: #dcfce7;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #f8fafc 0%, #eef2f6 55%, #f5f7fb 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  line-height: 1.5;
}

form {
  margin: 0;
}

h1 {
  margin: 0 0 1rem;
}

h2 {
  margin: 0 0 0.75rem;
}

p {
  margin-top: 0;
}

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

a:hover {
  text-decoration: underline;
}

.button:hover {
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: fadeUp 0.35s ease;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.container {
  width: min(1100px, calc(100% - 3rem));
  margin: 0 auto;
}

main.container {
  padding: 2rem 0 3rem;
}

.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.app-header .container {
  padding: 1.5rem 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.nav-links a {
  font-weight: 600;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

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

.card-plain {
  box-shadow: none;
  background: var(--surface-muted);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.card h2,
.card h3 {
  margin-top: 0;
}

.card p:last-child {
  margin-bottom: 0;
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field [role="alert"] {
  color: var(--danger);
  font-size: 0.9rem;
}

label {
  font-weight: 600;
  color: var(--text);
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="datetime-local"],
input[type="file"],
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
}

input[readonly] {
  background: var(--surface-muted);
  color: var(--muted);
}

textarea {
  resize: vertical;
}

.input-compact {
  width: 3.5ch;
  text-align: center;
}

.field .input-id {
  width: 28ch;
  max-width: 28ch;
  align-self: flex-start;
}

.button-match {
  width: 28ch;
  max-width: 28ch;
  align-self: flex-start;
  justify-self: start;
}

.helper-text {
  color: var(--muted);
  font-size: 0.9rem;
}

dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1.5rem;
  margin: 0;
}

dt {
  color: var(--muted);
  font-weight: 600;
}

dd {
  margin: 0;
}

.button,
button,
input[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.1s ease, box-shadow 0.1s ease, background 0.2s ease;
}

.button:hover,
button:hover,
input[type="submit"]:hover {
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.08);
}

.button:disabled,
button:disabled,
input[type="submit"]:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

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

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

.button-secondary {
  border-color: var(--primary);
  color: var(--primary);
}

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

.button-small {
  padding: 0.35rem 0.7rem;
  font-size: 0.85rem;
}

.inline-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.inline-form.inline-form-tight {
  flex-wrap: nowrap;
  gap: 0.4rem;
}

.slot-add-form {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 0.75rem;
}

.slot-add-form .field {
  margin: 0;
}

.input-date {
  width: 7.5ch;
}

.input-time {
  width: 6ch;
}

.input-duration {
  width: 6ch;
}

.input-capacity {
  width: 4.5ch;
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.table th,
.table td {
  padding: 0.75rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.table td.capacity-cell {
  white-space: nowrap;
}

.table th {
  background: var(--surface-muted);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.85rem;
}

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

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.alert {
  border-radius: 12px;
  padding: 0.85rem 1rem;
  border: 1px solid;
  margin-bottom: 1rem;
}

.alert-success {
  background: var(--success-soft);
  border-color: #bbf7d0;
  color: #166534;
}

.alert-error {
  background: var(--danger-soft);
  border-color: #fecaca;
  color: #991b1b;
}

.alert ul {
  margin: 0.5rem 0 0 1.2rem;
}

.status-text[data-state="error"] {
  color: var(--danger);
  font-weight: 600;
}

.status-text[data-state="ok"] {
  color: var(--muted);
}

.slot-list {
  display: grid;
  gap: 1.2rem;
}

.slot-day h3 {
  margin-bottom: 0.5rem;
}

.slot-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.slot-button {
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0.45rem 0.85rem;
  font-weight: 600;
}

.slot-button.is-selected {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.slot-confirm {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.reservation-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.reservation-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.reservation-item form {
  margin-left: auto;
}

#reservation-display[data-display="name"] .reservation-id,
#reservation-display[data-display="name"] .reservation-separator {
  display: none;
}

#reservation-display[data-display="id"] .reservation-name,
#reservation-display[data-display="id"] .reservation-separator {
  display: none;
}

@media (max-width: 720px) {
  .container {
    width: calc(100% - 2rem);
  }

  .table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
  }
}