:root {
  --bg: #0d1320;
  --bg-2: #111d2d;
  --panel: #15263b;
  --panel-2: #1b3050;
  --border: rgba(148, 163, 184, 0.18);
  --text: #ecf4ff;
  --muted: #adc3de;
  --accent: #7dd3fc;
  --shadow: 0 18px 40px rgba(2, 6, 23, 0.42);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  color: var(--text);
}
body { padding: 24px; }

button, input, select, textarea { font: inherit; }
button {
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font-weight: 700;
  cursor: pointer;
}
button.primary {
  background: linear-gradient(135deg, var(--accent), #d4f6ff);
  color: #071421;
}
button.secondary {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
}
button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
}

.app-shell {
  max-width: 1500px;
  margin: 0 auto;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
}
.page-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.page-nav button {
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--muted);
  background: transparent;
  padding: 9px 12px;
  font-size: 0.84rem;
  font-weight: 700;
}
.page-nav button:hover,
.page-nav button.active {
  background: var(--panel-2);
  color: var(--text);
}
.schedule-view[hidden] {
  display: none !important;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 8px;
}
h1 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.6rem); }

.layout {
  display: grid;
  grid-template-columns: 1.05fr 1.35fr 1fr;
  gap: 20px;
}
.single-page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}
.panel {
  background: rgba(20, 33, 49, 0.96);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.panel-header { margin-bottom: 16px; }
.panel-header h2 { margin: 0; font-size: 1.2rem; }
.collapsible-panel > .panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}
.collapsible-panel > .panel-header::-webkit-details-marker { display: none; }
.collapse-indicator {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg) translateY(-3px);
  transition: transform 160ms ease;
}
.collapsible-panel:not([open]) > .panel-header {
  margin-bottom: 0;
}
.collapsible-panel:not([open]) .collapse-indicator {
  transform: rotate(-45deg) translateY(3px);
}
.panel-note {
  color: var(--muted);
  font-size: 0.82rem;
  margin: 5px 0 0;
}

.day-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(220px, 1fr));
  gap: 12px;
}
.day-card {
  background: linear-gradient(180deg, rgba(28, 43, 63, 0.9), rgba(18, 27, 38, 0.9));
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}
.day-card.disabled { opacity: 0.62; }
.day-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.day-card-header label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}
.day-card-header input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

.time-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
label.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.82rem;
}
input[type="date"], input[type="time"], select, textarea {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(6, 12, 20, 0.7);
  color: var(--text);
  padding: 9px 10px;
}
input[type="date"], input[type="time"] {
  color-scheme: dark;
  cursor: pointer;
}
input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
  filter: invert(1) brightness(1.35);
  opacity: 0.9;
  cursor: pointer;
}
input[type="date"]:hover,
input[type="time"]:hover,
select:hover,
textarea:hover {
  border-color: rgba(125, 211, 252, 0.55);
}
input[type="date"]:focus-visible,
input[type="time"]:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
textarea {
  margin-top: 18px;
  min-height: 200px;
  resize: vertical;
}

.toolbar {
  margin-top: 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.template-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 0;
}
.template-tools input,
.template-tools select {
  flex: 1 1 190px;
  min-width: 0;
}
.slot-editor {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 720px;
  overflow: auto;
}
.day-slot-group {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(8, 15, 24, 0.55);
  padding: 12px;
}
.slot-group-summary {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
  cursor: pointer;
  list-style: none;
}
.slot-group-summary::-webkit-details-marker { display: none; }
.slot-group-summary h3 { margin: 0; }
.day-title-row {
  display: flex;
  align-items: center;
  gap: 8px;
}
.day-slot-group:not([open]) .slot-group-summary { margin-bottom: 0; }
.day-slot-group:not([open]) .collapse-indicator {
  transform: rotate(-45deg) translateY(3px);
}
.slot-window {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 4px 0 0;
}
.slot-count {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid rgba(125, 211, 252, 0.25);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
}
.add-slot-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}
.add-slot-controls input {
  width: 112px;
  min-width: 0;
}
.slot-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.slot-item {
  display: grid;
  grid-template-columns: minmax(105px, auto) minmax(170px, 1fr) minmax(130px, 1fr) auto;
  gap: 10px;
  align-items: center;
  background: rgba(27, 45, 69, 0.7);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
}
.slot-time-label {
  font-weight: 700;
  white-space: nowrap;
}
.slot-time-inputs {
  display: flex;
  align-items: center;
  gap: 6px;
}
.slot-time-inputs input { min-width: 0; }
.slot-time {
  font-weight: 700;
}

.generated-schedule {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}
.generated-date {
  border: 1px solid var(--border);
  background: rgba(7, 13, 22, 0.56);
  border-radius: 12px;
  padding: 12px;
}
.generated-date h4 {
  margin: 0 0 10px;
  color: var(--accent);
}
.generated-slot-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.generated-slot-tag {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 700;
}
.generated-slot-tag.onstream {
  background: rgba(94, 234, 212, 0.14);
  color: #a8f8ea;
}
.generated-slot-tag.staff {
  background: rgba(125, 211, 252, 0.12);
  color: #d4f4ff;
}
.generated-slot-tag.collaborator {
  background: rgba(251, 191, 36, 0.12);
  color: #fde7a3;
}

.range-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.range-controls label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.calendar-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 20px;
}
.calendar-panel {
  min-width: 0;
}
.slot-category-panel {
  margin-top: 20px;
}
.slot-category-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--text);
  font-size: 0.9rem;
}
.slot-category-table th,
.slot-category-table td {
  border-bottom: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}
.slot-category-table thead th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}
.slot-category-table tbody tr:last-child th,
.slot-category-table tbody tr:last-child td {
  border-bottom: 0;
}
.category-colour {
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 6px;
  border-radius: 3px;
  vertical-align: -1px;
}
.category-colour { background: var(--accent); }
.category-manager {
  border-top: 1px solid var(--border);
  margin-top: 20px;
  padding-top: 18px;
}
.category-form {
  display: grid;
  grid-template-columns: 1fr 1fr 120px auto auto;
  align-items: end;
  gap: 10px;
}
.category-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.82rem;
}
.category-form input[type="text"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(6, 12, 20, 0.7);
  color: var(--text);
  padding: 9px 10px;
}
.category-form input[type="color"] {
  width: 100%;
  height: 40px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(6, 12, 20, 0.7);
  cursor: pointer;
}
.category-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 14px;
}
.category-row {
  display: grid;
  grid-template-columns: auto minmax(120px, 1fr) minmax(100px, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(8, 15, 24, 0.55);
}
.category-key {
  color: var(--muted);
  font-family: Consolas, monospace;
  font-size: 0.82rem;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.fc {
  --fc-border-color: rgba(148, 163, 184, 0.18);
  --fc-page-bg-color: rgba(6, 12, 20, 0.35);
  --fc-neutral-bg-color: rgba(27, 45, 69, 0.7);
  --fc-list-event-hover-bg-color: rgba(56, 189, 248, 0.12);
  --fc-today-bg-color: rgba(125, 211, 252, 0.08);
  color: var(--text);
}
.fc .fc-toolbar-title {
  font-size: 1rem;
}
.fc .fc-button {
  background: var(--panel-2);
  border-color: var(--border);
  font-size: 0.78rem;
  text-transform: capitalize;
}
.fc .fc-button:hover,
.fc .fc-button-primary:not(:disabled).fc-button-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #071421;
}
.fc .fc-col-header-cell-cushion,
.fc .fc-timegrid-slot-label-cushion {
  color: var(--muted);
  font-size: 0.75rem;
}
.fc .fc-event {
  border: 0;
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 0.76rem;
  font-weight: 700;
}
.fc .stream-hours-event {
  background: rgba(56, 189, 248, 0.58);
  color: #e0f7ff;
}
.fc .slot-event-onstream {
  background: rgba(45, 212, 191, 0.72);
  color: #ecfffb;
}
.fc .slot-event-staff {
  background: rgba(125, 211, 252, 0.72);
  color: #071421;
}
.fc .slot-event-collaborator {
  background: rgba(251, 191, 36, 0.78);
  color: #241500;
}

@media (max-width: 700px) {
  .topbar, .layout, .range-controls, .calendar-layout {
    display: grid;
    grid-template-columns: 1fr;
  }
  .slot-group-summary, .add-slot-controls {
    align-items: stretch;
    flex-direction: column;
  }
  .add-slot-controls input, .add-slot-controls button {
    width: 100%;
  }
  .fc .fc-toolbar {
    display: grid;
    gap: 8px;
  }
  .category-form, .category-row {
    grid-template-columns: 1fr;
  }
}