:root {
  --paper: #ffa300;
  --surface: #ffffff;
  --surface-strong: #eef6f4;
  --ink: #17202a;
  --muted: #64748b;
  --line: #94a3b8;
  --line-soft: #d6dee9;
  --accent: #008b84;
  --accent-strong: #006f6a;
  --brand-blue: #0800c8;
  --brand-blue-strong: #050096;
  --page-orange: #ffa300;
  --amber: #d97706;
  --danger: #dc2626;
  --violet: #4f46e5;
  --reserved: #fde7d3;
  --mine: #dcfce7;
  --blocked: #e5e7eb;
  --group-bg: #e2e8f0;
  --today-bg: #e0f2fe;
  --cat-equipment: #e0f2fe;
  --cat-equipment-strong: #bae6fd;
  --cat-lab: #ecfdf5;
  --cat-lab-strong: #bbf7d0;
  --cat-room: #fef3c7;
  --cat-room-strong: #fde68a;
  --cat-space: #f3e8ff;
  --cat-space-strong: #e9d5ff;
  --cat-other: #f1f5f9;
  --cat-other-strong: #cbd5e1;
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.topbar {
  align-items: center;
  background: var(--brand-blue);
  border-bottom: 0;
  box-shadow: none;
  color: white;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 8px 22px;
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand,
.session-panel,
.month-controls,
.status-row {
  align-items: center;
  display: flex;
  gap: 12px;
}

.brand {
  flex: 0 0 auto;
  min-width: 280px;
}

.brand-title {
  min-width: 0;
}

.brand h1 {
  color: white;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.15;
  margin: 0;
}

.brand p,
.eyebrow {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin: 3px 0 0;
  text-transform: uppercase;
}

.topbar .brand p {
  color: #8ab8ff;
}

.session-panel {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.session-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.92);
  display: grid;
  gap: 2px;
  min-height: 38px;
  min-width: 230px;
  padding: 6px 10px;
}

.session-card span {
  color: var(--muted);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.session-card strong {
  color: #17202a;
  font-size: 0.86rem;
  line-height: 1.15;
}

.layout {
  padding: 18px 22px 30px;
}

.admin-screen {
  padding: 18px 22px 30px;
}

.admin-shell {
  display: grid;
  gap: 18px;
  margin: 0 auto;
  max-width: 1280px;
}

.admin-header,
.admin-card-head {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
}

.admin-header {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  padding: 18px;
}

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

.admin-card {
  background: var(--surface);
  border: 1px solid var(--line-soft);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  padding: 18px;
}

.admin-card form {
  margin-top: 16px;
}

.danger-zone {
  align-items: center;
  border-color: #fecaca;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.danger-zone p:not(.eyebrow) {
  color: var(--muted);
  margin: 6px 0 0;
}

.toolbar {
  align-items: end;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  margin-bottom: 12px;
}

.month-controls {
  align-items: end;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.month-controls .field {
  flex: 0 0 auto;
}

.field {
  display: grid;
  gap: 5px;
}

.field span {
  color: #075fae;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.field input,
.field select,
.field textarea {
  background: white;
  border: 1px solid var(--line-soft);
  color: var(--ink);
  height: 40px;
  min-height: 40px;
  min-width: 0;
  padding: 8px 10px;
}

.readonly-value {
  align-items: center;
  background: #f8fafc;
  border: 1px solid var(--line-soft);
  color: var(--ink);
  display: flex;
  min-height: 38px;
  padding: 8px 10px;
}

.field textarea {
  resize: vertical;
}

.form-help {
  color: var(--muted);
  font-size: 0.86rem;
  margin: 10px 0 0;
}

.compact select {
  min-width: 190px;
}

#monthSelect {
  width: 118px;
}

#todayButton {
  min-width: 66px;
}

.year-field input {
  width: 94px;
}

.search-field {
  min-width: min(360px, 100%);
  width: min(360px, 100%);
}

.button,
.icon-button {
  align-items: center;
  border: 1px solid var(--line-soft);
  display: inline-flex;
  font-weight: 800;
  justify-content: center;
  height: 40px;
  min-height: 40px;
  padding: 8px 13px;
}

.button {
  background: var(--surface);
  color: var(--ink);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

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

.button.ghost {
  background: transparent;
}

.topbar .button.ghost {
  border-color: rgba(255, 255, 255, 0.85);
  color: white;
}

.topbar .button.ghost:hover {
  background: rgba(255, 255, 255, 0.12);
}

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

.icon-button {
  background: var(--surface);
  color: var(--ink);
  font-size: 1rem;
  height: 40px;
  padding: 0;
  width: 40px;
}

.button:disabled,
.icon-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.status-row {
  color: #0f4a6b;
  flex-wrap: wrap;
  font-size: 0.86rem;
  margin: 0 0 12px;
}

.status-row span {
  align-items: center;
  display: inline-flex;
  gap: 7px;
}

.swatch {
  border: 1px solid var(--line);
  display: inline-block;
  height: 14px;
  width: 18px;
}

.swatch.available {
  background: linear-gradient(90deg, var(--cat-equipment), var(--cat-lab), var(--cat-room), var(--cat-space));
}

.swatch.reserved {
  background: linear-gradient(
    90deg,
    var(--cat-equipment-strong),
    var(--cat-lab-strong),
    var(--cat-room-strong),
    var(--cat-space-strong)
  );
}

.swatch.mine {
  background: var(--mine);
  box-shadow: inset 0 0 0 2px #22c55e;
}

.swatch.blocked {
  background: var(--blocked);
}

.board-wrap {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  height: calc(100vh - 215px);
  min-height: 360px;
  overflow: auto;
  overscroll-behavior: contain;
  position: relative;
  scrollbar-gutter: stable both-edges;
  width: 100%;
}

.resource-corner {
  align-items: center;
  background: var(--surface-strong);
  border-bottom: 1px solid var(--line);
  border-right: 2px solid var(--line);
  box-shadow: 6px 0 10px rgba(15, 23, 42, 0.14);
  color: var(--ink);
  display: flex;
  font-size: 0.76rem;
  font-weight: 900;
  height: 88px;
  justify-content: center;
  left: 0;
  margin-bottom: -88px;
  min-width: 250px;
  pointer-events: none;
  position: sticky;
  top: 0;
  width: 250px;
  z-index: 60;
}

.board {
  min-height: 420px;
}

.booking-grid {
  border-collapse: separate;
  border-spacing: 0;
  font-size: 0.76rem;
  table-layout: fixed;
  width: max-content;
}

.booking-grid th,
.booking-grid td {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  height: 58px;
  padding: 0;
  vertical-align: middle;
}

.booking-grid thead th {
  background: var(--surface-strong);
  position: sticky;
  top: 0;
  z-index: 8;
}

.booking-grid thead tr:first-child th {
  top: 0;
  z-index: 13;
}

.booking-grid thead tr:nth-child(2) th {
  top: 58px;
  z-index: 12;
}

.booking-grid .resource-head,
.booking-grid .resource-cell,
.booking-grid .group-cell {
  left: 0;
  position: sticky;
}

.booking-grid .resource-head {
  background: var(--surface-strong);
  border-right: 2px solid var(--line);
  box-shadow: 6px 0 10px rgba(15, 23, 42, 0.14);
  height: 88px !important;
  left: 0;
  min-width: 250px;
  position: sticky;
  top: 0;
  width: 250px;
  z-index: 30;
}

.booking-grid .resource-cell {
  background: #f8fafc;
  min-width: 250px;
  padding: 8px 10px;
  width: 250px;
  z-index: 5;
}

.booking-grid .group-cell {
  background: var(--group-bg);
  border-top: 2px solid var(--line);
  color: #393b35;
  font-weight: 900;
  height: 32px;
  padding: 0 10px;
  text-transform: uppercase;
  z-index: 6;
}

.booking-grid .group-fill {
  background: var(--group-bg);
  border-top: 2px solid var(--line);
  height: 32px;
}

.booking-grid .cat-equipment.resource-cell {
  background: var(--cat-equipment);
}

.slot-button.cat-equipment {
  background: color-mix(in srgb, var(--cat-equipment) 44%, white);
}

.slot-button.cat-equipment.reserved {
  background: var(--cat-equipment-strong);
}

.booking-grid .cat-equipment.group-cell,
.booking-grid .cat-equipment.group-fill {
  background: var(--cat-equipment-strong);
}

.booking-grid .cat-lab.resource-cell {
  background: var(--cat-lab);
}

.slot-button.cat-lab {
  background: color-mix(in srgb, var(--cat-lab) 44%, white);
}

.slot-button.cat-lab.reserved {
  background: var(--cat-lab-strong);
}

.booking-grid .cat-lab.group-cell,
.booking-grid .cat-lab.group-fill {
  background: var(--cat-lab-strong);
}

.booking-grid .cat-room.resource-cell {
  background: var(--cat-room);
}

.slot-button.cat-room {
  background: color-mix(in srgb, var(--cat-room) 48%, white);
}

.slot-button.cat-room.reserved {
  background: var(--cat-room-strong);
}

.booking-grid .cat-room.group-cell,
.booking-grid .cat-room.group-fill {
  background: var(--cat-room-strong);
}

.booking-grid .cat-space.resource-cell {
  background: var(--cat-space);
}

.slot-button.cat-space {
  background: color-mix(in srgb, var(--cat-space) 48%, white);
}

.slot-button.cat-space.reserved {
  background: var(--cat-space-strong);
}

.booking-grid .cat-space.group-cell,
.booking-grid .cat-space.group-fill {
  background: var(--cat-space-strong);
}

.booking-grid .cat-other.resource-cell {
  background: var(--cat-other);
}

.slot-button.cat-other {
  background: color-mix(in srgb, var(--cat-other) 45%, white);
}

.slot-button.cat-other.reserved {
  background: var(--cat-other-strong);
}

.booking-grid .cat-other.group-cell,
.booking-grid .cat-other.group-fill {
  background: var(--cat-other-strong);
}

.resource-name {
  display: block;
  font-weight: 900;
  line-height: 1.15;
}

.resource-detail {
  color: var(--muted);
  display: block;
  font-size: 0.68rem;
  line-height: 1.2;
  margin-top: 4px;
}

.day-header {
  border-right: 2px solid var(--line) !important;
  font-weight: 900;
  min-width: 315px;
  padding: 7px 8px !important;
  text-align: center;
  width: 315px;
}

.day-header.today {
  background: var(--today-bg);
}

.day-header.current-day-position {
  background: #bae6fd;
  color: #075985;
}

.shift-header.current-day-cell {
  background: #bae6fd;
  color: #075985;
}

.shift-header {
  color: var(--muted);
  font-size: 0.7rem;
  height: 30px !important;
  min-width: 105px;
  text-align: center;
  width: 105px;
}

.booking-grid td:nth-child(3n + 1) {
  border-right-width: 2px;
}

.slot {
  min-width: 105px;
  width: 105px;
}

.slot-button {
  align-items: stretch;
  background: white;
  border: 0;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  height: 58px;
  justify-content: center;
  line-height: 1.15;
  overflow: hidden;
  padding: 4px 5px;
  text-align: center;
  width: 100%;
}

.slot-button:hover,
.slot-button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.slot-button.reserved {
  font-size: 0.66rem;
  font-weight: 400;
}

.slot-button.mine {
  box-shadow: inset 0 0 0 3px #22c55e;
}

.slot.current-day-cell {
  background: #e0f2fe;
}

.slot-button.current-day-slot {
  background-image: linear-gradient(rgba(2, 132, 199, 0.16), rgba(2, 132, 199, 0.16));
  box-shadow: inset 0 0 0 2px #0284c7;
}

.slot-button.current-day-slot.mine {
  box-shadow: inset 0 0 0 3px #22c55e, inset 0 0 0 6px #0284c7;
}

.slot-button.blocked {
  color: #5d5e58;
  opacity: 0.78;
}

.slot-button .course {
  color: #7c2d12;
  font-size: 0.61rem;
  font-weight: 400;
  margin-top: 3px;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  color: var(--ink);
  max-width: min(720px, calc(100vw - 28px));
  padding: 0;
  width: 640px;
}

.modal.small {
  width: 420px;
}

.modal.wide {
  width: 900px;
}

.modal::backdrop {
  background: rgba(26, 29, 26, 0.38);
}

.modal form,
.modal-body,
.table-panel {
  padding: 18px;
}

.admin-card .table-panel {
  margin: 16px -18px -18px;
  overflow: auto;
}

.modal-head {
  align-items: flex-start;
  border-bottom: 1px solid var(--line-soft);
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin: -18px -18px 16px;
  padding: 18px;
}

.modal-head-actions {
  align-items: center;
  display: flex;
  gap: 10px;
}

.modal h2 {
  font-size: 1.25rem;
  margin: 0;
}

.form-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.span-2 {
  grid-column: span 2;
}

.admin-form {
  align-items: end;
  grid-template-columns: repeat(4, minmax(0, 1fr)) auto;
}

.resource-form-actions {
  align-items: center;
  display: flex;
  gap: 10px;
}

.table-button {
  min-height: 32px;
  padding: 6px 10px;
}

.table-button.is-active {
  background: #e0f2fe;
  border-color: #7dd3fc;
  color: #075985;
}

.table-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.protected-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.user-reservations-panel {
  border-top: 1px solid var(--line-soft);
  margin: 0 -18px -18px;
  padding: 18px;
}

.user-reservations-head {
  align-items: center;
  display: flex;
  gap: 16px;
  justify-content: space-between;
  margin-bottom: 12px;
}

.user-reservations-head h4 {
  font-size: 1rem;
  margin: 0;
}

.compact-head {
  align-items: start;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 0;
  padding-bottom: 12px;
}

.reservation-count {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
}

.user-reservations-list {
  display: grid;
  gap: 0;
}

.user-reservation-row {
  border-top: 1px solid var(--line-soft);
  padding: 11px 0;
}

.user-reservation-row:first-child {
  border-top: 0;
}

.user-reservation-row strong {
  display: block;
  line-height: 1.2;
}

.user-reservation-row span,
.user-reservation-row p,
.empty-panel {
  color: var(--muted);
  font-size: 0.84rem;
}

.user-reservation-row span {
  display: block;
  margin-top: 3px;
}

.user-reservation-row p,
.empty-panel {
  margin: 4px 0 0;
}

.modal-actions {
  align-items: center;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 18px;
}

.booking-card {
  background: #fff7ed;
  border: 1px solid #fed7aa;
  margin-bottom: 14px;
  padding: 12px;
}

.booking-card strong {
  display: block;
  margin-bottom: 4px;
}

.booking-card p {
  color: var(--muted);
  margin: 4px 0 0;
}

.compact-table {
  border-collapse: collapse;
  font-size: 0.86rem;
  width: 100%;
}

.compact-table th,
.compact-table td {
  border-bottom: 1px solid var(--line-soft);
  padding: 9px 8px;
  text-align: left;
}

.compact-table th {
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.toast {
  background: var(--ink);
  bottom: 20px;
  box-shadow: var(--shadow);
  color: white;
  left: 50%;
  opacity: 0;
  padding: 10px 14px;
  pointer-events: none;
  position: fixed;
  transform: translate(-50%, 12px);
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 50;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.hidden {
  display: none !important;
}

.print-area {
  display: none;
}

@media print {
  @page {
    margin: 12mm;
  }

  body {
    background: white;
  }

  body > *:not(.print-area) {
    display: none !important;
  }

  .print-area {
    color: #111827;
    display: block;
    font-family: Arial, sans-serif;
  }

  .print-header {
    border-bottom: 2px solid #111827;
    margin-bottom: 16px;
    padding-bottom: 10px;
  }

  .print-header p,
  .print-header span {
    color: #475569;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    margin: 0;
    text-transform: uppercase;
  }

  .print-header h1 {
    font-size: 24px;
    margin: 4px 0;
  }

  .print-group {
    break-inside: avoid;
    margin-bottom: 18px;
  }

  .print-group h2 {
    background: #e2e8f0;
    border: 1px solid #94a3b8;
    font-size: 15px;
    margin: 0;
    padding: 7px 9px;
  }

  .print-group table {
    border-collapse: collapse;
    font-size: 12px;
    width: 100%;
  }

  .print-group th,
  .print-group td {
    border: 1px solid #94a3b8;
    padding: 6px 8px;
    text-align: left;
    vertical-align: top;
  }

  .print-group th {
    background: #f8fafc;
  }
}

@media (max-width: 860px) {
  .topbar,
  .toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .session-panel,
  .month-controls {
    justify-content: flex-start;
  }

  .brand {
    min-width: 0;
    width: 100%;
  }

  .danger-zone,
  .admin-header,
  .admin-card-head,
  .user-reservations-head {
    align-items: stretch;
    flex-direction: column;
  }

  .search-field {
    min-width: 0;
  }

  .layout,
  .admin-screen {
    padding: 14px;
  }

  .board-wrap {
    height: calc(100vh - 285px);
    min-height: 320px;
  }

  .form-grid,
  .admin-form {
    grid-template-columns: 1fr;
  }

  .span-2 {
    grid-column: span 1;
  }
}