html {
  background: linear-gradient(140deg, #edf4ff 0%, #deebfb 45%, #ffe8d6 100%);
  background-attachment: fixed;
  background-repeat: no-repeat;
}

:root {
  color-scheme: light;
  --layout-max: 1800px;
  --bg: #eef5ff;
  --bg-deep: #deebfb;
  --ink: #1f1b16;
  --muted: #5c5248;
  --accent: #d46a41;
  --accent-dark: #a85030;
  --card: #fffaf3;
  --line: #e4d6c7;
  --shadow: 0 24px 40px rgba(31, 27, 22, 0.14);
  --radius: 18px;
  --radius-sm: 12px;
  --font: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  --class-col: 126px;
  --slot-col: 64px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: transparent;
  min-height: 100vh;
  padding: 24px;
  overflow-x: hidden;
}

.bg-orbit {
  position: fixed;
  inset: -200px auto auto -200px;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(242, 125, 201, 0.2) 0%, rgba(242, 125, 201, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

.site-header {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin: 0 0 20px;
  max-width: var(--layout-max);
}

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  font-size: 0.7rem;
  color: var(--muted);
  margin: 0 0 6px 0;
}

h1 {
  font-size: clamp(1.8rem, 2.5vw, 2.35rem);
  margin: 0 0 8px 0;
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.status {
  padding: 10px 14px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--muted);
  box-shadow: var(--shadow);
  opacity: 1;
  transition: opacity var(--status-fade-ms, 180ms) ease;
}

.status.is-hiding {
  opacity: 0;
}

.status-slot {
  min-height: 42px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
}

.layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 20px;
  max-width: var(--layout-max);
  min-width: 0;
}

.panel {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  padding: 18px 20px 22px;
  box-shadow: var(--shadow);
  max-width: 100%;
  min-width: 0;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 12px;
}

.panel-header h2 {
  margin: 0 0 5px 0;
  font-size: 1.3rem;
}

.panel-header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.workspace-toolbar {
  position: sticky;
  top: 10px;
  z-index: 6;
  display: grid;
  gap: 10px;
  background: var(--card);
  background: color-mix(in srgb, var(--card) 88%, white 12%);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px;
  margin-bottom: 12px;
  min-width: 0;
}

.toolbar-primary,
.toolbar-secondary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.toolbar-primary {
  justify-content: space-between;
}

.toolbar-secondary {
  justify-content: flex-start;
}

.day-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  flex: 1 0 100%;
  min-width: 0;
}

.day-switch button {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  box-shadow: none;
}

button,
.button-like {
  border: none;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 12px 24px rgba(212, 106, 65, 0.25);
}

button:hover {
  transform: translateY(-1px);
}

button:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

button.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
  box-shadow: none;
}

button.is-active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 8px 14px rgba(212, 106, 65, 0.24);
}

button.loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

button.loading::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255, 255, 255, 0.65);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.overflow-wrap {
  position: relative;
  flex: 0 0 auto;
}

.overflow-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 180px;
  display: grid;
  gap: 6px;
  padding: 8px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fffdf8;
  box-shadow: var(--shadow);
}

.overflow-menu button {
  width: 100%;
  justify-content: flex-start;
  text-align: left;
}

.hidden {
  display: none !important;
}

.advanced-panel {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 8px;
}

.advanced-panel .advanced-summary {
  grid-column: 1 / -1;
  margin: 0;
}

.advanced-summary,
.slot-legend,
.scroll-hint {
  color: var(--muted);
  font-size: 0.88rem;
  margin: 6px 0;
}

.advanced-summary-card {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
  background: #fff;
}

.advanced-summary-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
}

.advanced-summary-total {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
}

.advanced-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.advanced-tag {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-deep) 56%, white 44%);
  color: var(--ink);
  font-size: 0.76rem;
  padding: 3px 8px;
  white-space: nowrap;
}

.advanced-rule-details summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 0.84rem;
  font-weight: 600;
}

.advanced-rule-list {
  margin: 8px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 4px;
}

.advanced-rule-item {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.3;
}

.advanced-note {
  grid-column: 1 / -1;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--card) 88%, var(--bg-deep) 12%);
  padding: 9px 12px;
  display: grid;
  gap: 5px;
}

.advanced-note p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.hour-pref,
.weight-config {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 6px 10px 8px;
  display: inline-grid;
  gap: 6px;
  background: #fff;
}

.hour-pref legend,
.weight-config legend {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 4px;
}

.hour-pref-grid {
  display: grid;
  gap: 4px 6px;
  grid-template-columns: minmax(72px, auto) repeat(6, minmax(26px, auto));
  align-items: center;
}

.hour-pref-grid .hour-head {
  font-size: 0.74rem;
  color: var(--muted);
  text-align: center;
}

.hour-pref-grid .day-label {
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}

.hour-pref-grid .slot-check {
  display: inline-flex;
  justify-content: center;
}

.weight-config label {
  display: grid;
  grid-template-columns: 1fr 60px;
  grid-template-areas:
    "label input"
    "detail detail";
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
}

.weight-config .weight-label {
  grid-area: label;
}

.weight-config input {
  grid-area: input;
  width: 60px;
  padding: 4px 6px;
  font-size: 0.8rem;
}

.weight-config .weight-detail {
  grid-area: detail;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.25;
}

.grid-wrap {
  overflow: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: #fffdf8;
  max-width: 100%;
  width: 100%;
}

.timetable {
  display: grid;
  grid-auto-rows: minmax(46px, auto);
  align-items: stretch;
  min-width: 100%;
  width: max-content;
}

.cell {
  padding: 6px 5px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-width: 0;
}

.cell.header {
  background: var(--bg-deep);
  font-weight: 700;
  font-size: 0.76rem;
}

.cell.class-name {
  justify-content: flex-start;
  padding-left: 10px;
  font-weight: 600;
}

.cell.slot {
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  justify-content: flex-start;
  text-align: left;
  padding-left: 6px;
  padding-right: 6px;
}

button.cell.slot {
  border: 0;
  border-radius: 0;
  box-shadow: inset 0 0 0 1px rgba(103, 86, 73, 0.18);
  margin: 0;
  font: inherit;
  color: inherit;
  background: transparent;
  font-weight: 500;
}

.cell.slot:hover {
  background: rgba(212, 106, 65, 0.15);
}

.cell.slot:focus-visible {
  outline: 3px solid rgba(212, 106, 65, 0.7);
  outline-offset: -3px;
  background: rgba(212, 106, 65, 0.15);
}

.cell.slot.active {
  background: rgba(212, 106, 65, 0.25);
  color: var(--accent-dark);
  font-weight: 600;
}

.cell.slot.extra-assigned {
  background: rgba(106, 161, 86, 0.22);
  box-shadow: inset 0 0 0 2px rgba(71, 130, 52, 0.45);
  font-weight: 700;
}

.cell.slot.required-presence {
  background:
    repeating-linear-gradient(
      -45deg,
      rgba(212, 106, 65, 0.12),
      rgba(212, 106, 65, 0.12) 6px,
      rgba(212, 106, 65, 0.2) 6px,
      rgba(212, 106, 65, 0.2) 12px
    );
  box-shadow: inset 0 0 0 2px rgba(160, 70, 34, 0.5);
}

.cell.slot.required-presence.extra-assigned {
  background:
    linear-gradient(0deg, rgba(106, 161, 86, 0.24), rgba(106, 161, 86, 0.24)),
    repeating-linear-gradient(
      -45deg,
      rgba(212, 106, 65, 0.1),
      rgba(212, 106, 65, 0.1) 6px,
      rgba(212, 106, 65, 0.18) 6px,
      rgba(212, 106, 65, 0.18) 12px
    );
}

.slot-editor {
  display: grid;
  gap: 10px;
}

.slot-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.meta-item {
  display: grid;
  gap: 3px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fffdf7;
}

.field,
.select {
  display: grid;
  gap: 4px;
}

.label {
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  line-height: 1.1;
}

.value {
  font-size: 0.92rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

select,
input {
  padding: 9px 11px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 0.9rem;
}

.actions {
  display: flex;
  gap: 10px;
}

.panel-manage {
  grid-column: 1 / -1;
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(31, 27, 22, 0.35);
  display: grid;
  place-items: center;
  z-index: 20;
  padding: 20px;
}

.modal-content {
  width: min(480px, 92vw);
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 18px 20px 20px;
}

.modal-content:focus {
  outline: none;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.manage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.inline-form {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.inline-form input {
  flex: 1;
}

.item-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.item-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fffdf7;
}

.row-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.check-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 7px 10px;
  background: #fff;
  font-size: 0.82rem;
  color: var(--muted);
}

.check-inline input,
.subject-prio input {
  margin: 0;
}

.check-inline.is-disabled {
  opacity: 0.6;
}

.subject-prio {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--muted);
}

.hours-input {
  width: 84px;
  padding: 6px 9px;
  font-size: 0.82rem;
}

.item-list button {
  padding: 6px 10px;
  font-size: 0.8rem;
}

@media (max-width: 1200px) {
  :root {
    --class-col: 112px;
    --slot-col: 58px;
  }

  .bg-orbit {
    display: none;
  }

  .advanced-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  body {
    padding: 16px;
  }

  :root {
    --class-col: 96px;
    --slot-col: 52px;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .status {
    align-self: flex-start;
  }

  .status-slot {
    align-self: flex-start;
    justify-content: flex-start;
  }

  .toolbar-primary,
  .toolbar-secondary {
    justify-content: flex-start;
  }

  .toolbar-primary button,
  .toolbar-secondary button {
    font-size: 0.84rem;
  }

  .manage-grid {
    grid-template-columns: 1fr;
  }

  .slot-meta {
    grid-template-columns: 1fr;
  }

  .advanced-summary-top {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 620px) {
  h1 {
    font-size: 1.75rem;
  }

  .workspace-toolbar {
    top: 6px;
    padding: 8px;
  }

  .toolbar-primary,
  .toolbar-secondary {
    gap: 6px;
  }

  #computeExtraTeacherBtn {
    width: 100%;
    justify-content: center;
  }

  .day-switch button {
    padding: 7px 10px;
    font-size: 0.78rem;
  }

  .overflow-menu {
    right: 0;
    left: auto;
    min-width: min(210px, calc(100vw - 40px));
  }

  .modal {
    align-items: end;
    padding: 10px;
  }

  .modal-content {
    width: min(520px, 100%);
    max-height: 92vh;
    overflow-y: auto;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
  }
}

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