* {
  box-sizing: border-box;
}

:root {
  --bg: #0e1117;
  --surface: #161b22;
  --surface-2: #121721;
  --surface-3: #0d1117;
  --surface-4: #1a202c;
  --border: #30363d;
  --border-soft: #2a2f38;
  --border-input: #3f4a5a;
  --text: #e5e7eb;
  --muted: #9ea7b3;
  --muted-2: #a9b2bf;
  --muted-3: #5d6674;
  --accent: #1f6feb;
  --accent-strong: #2f81f7;
  --accent-text: #9ecbff;
  --danger: #8b1f2a;
  --button-text: #ffffff;
  --toast-ok: #238636;
  --toast-error: #da3633;
  --overlay: rgba(0, 0, 0, 0.55);
  --calendar-empty: #0f141d;
}

html[data-theme="light"] {
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #f4f6fb;
  --surface-3: #ffffff;
  --surface-4: #ffffff;
  --border: #d6dbe5;
  --border-soft: #e3e7ef;
  --border-input: #c9d1dd;
  --text: #1f2933;
  --muted: #667084;
  --muted-2: #697386;
  --muted-3: #8a94a6;
  --accent: #1f6feb;
  --accent-strong: #2f81f7;
  --accent-text: #1f6feb;
  --danger: #c53030;
  --button-text: #ffffff;
  --toast-ok: #2f855a;
  --toast-error: #c53030;
  --overlay: rgba(17, 24, 39, 0.35);
  --calendar-empty: #eef2f7;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
}

.session {
  display: flex;
  gap: 8px;
  align-items: center;
}

#sessionInfo {
  color: var(--accent-text);
}

#logoutBtn {
  background: var(--danger);
}

#themeToggleBtn {
  background: transparent;
  border: 1px solid var(--border-input);
  font-size: 16px;
  line-height: 1;
  padding: 6px 8px;
  transition: transform 180ms ease, border-color 180ms ease;
}

#themeToggleBtn:hover {
  transform: rotate(12deg) scale(1.05);
  border-color: var(--accent);
}

main {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.auth-grid {
  grid-template-columns: minmax(280px, 420px);
  justify-content: center;
}

#loginSection {
  min-height: calc(100vh - 90px);
  align-items: center;
}

.hidden {
  display: none;
}

article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 10px;
}

input,
select,
textarea,
button {
  padding: 8px;
  border-radius: 6px;
  border: 1px solid var(--border-input);
  background: var(--surface-3);
  color: var(--text);
}

button {
  cursor: pointer;
  background: var(--accent);
  border: none;
  color: var(--button-text);
}

pre {
  background: var(--surface-3);
  padding: 8px;
  border-radius: 6px;
  min-height: 72px;
  overflow: auto;
}

#toast {
  position: fixed;
  bottom: 16px;
  right: 16px;
  padding: 10px 12px;
  border-radius: 8px;
}

#toast.ok {
  background: var(--toast-ok);
}

#toast.error {
  background: var(--toast-error);
}

.workspace {
  display: grid;
  grid-template-columns: 340px minmax(820px, 1fr);
  align-items: start;
  gap: 16px;
}

.calendar-card {
  min-height: 780px;
  overflow-x: auto;
  grid-column: 2;
}

.actions-card {
  grid-column: 1;
  position: sticky;
  top: 12px;
}

.app-shell {
  display: grid;
  grid-template-columns: 260px minmax(820px, 1fr);
  gap: 16px;
  align-items: start;
}

.side-menu {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  position: sticky;
  top: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.side-menu h2 {
  margin: 0 0 6px 0;
}

.menu-item {
  width: 100%;
  text-align: left;
}

.menu-item.active {
  background: var(--accent-strong);
}

.content-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page h2 {
  margin-top: 0;
}

.page-output {
  margin-top: 12px;
}

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

.slot-select {
  font-size: 13px;
}

.calendar-toolbar h2 {
  margin: 0;
  font-size: 36px;
}

.calendar-actions {
  display: flex;
  gap: 8px;
}

.weekdays {
  display: grid;
  grid-template-columns: repeat(7, 160px);
  padding: 10px 8px;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  width: max-content;
}

.weekdays span {
  text-align: right;
  padding-right: 8px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 160px);
  grid-template-rows: repeat(6, minmax(110px, auto));
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  width: max-content;
}

.day-cell {
  border-right: 1px solid var(--border-soft);
  border-bottom: 1px solid var(--border-soft);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 110px;
  background: var(--surface-2);
}

.day-cell:nth-child(7n) {
  border-right: none;
}

.day-number {
  font-size: 13px;
  color: var(--muted-2);
  text-align: right;
}

.day-cell.other-month .day-number {
  color: var(--muted-3);
}

.empty-day-cell {
  background: var(--calendar-empty);
}

.day-events {
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: visible;
}

.event-pill {
  font-size: 11px;
  line-height: 1.2;
  border-radius: 6px;
  padding: 3px 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}

.event-custom-color {
  background: color-mix(in srgb, var(--event-color) 25%, transparent);
  border: 1px solid color-mix(in srgb, var(--event-color) 55%, #ffffff 10%);
}

.actions-card h2 {
  margin-top: 0;
}

.role-hint {
  color: var(--accent-text);
  margin-top: 0;
}

.action-group {
  border-top: 1px solid var(--border);
  padding-top: 10px;
  margin-top: 10px;
}

.action-group h3 {
  margin: 0 0 8px 0;
  font-size: 14px;
}

.inline-actions {
  display: flex;
  gap: 8px;
}

.modal-event-actions {
  flex-wrap: nowrap;
}

.modal-event-actions button {
  white-space: nowrap;
}

html.chromium input[type="date"]::-webkit-calendar-picker-indicator {
  display: none;
  -webkit-appearance: none;
  width: 0;
  margin: 0;
  padding: 0;
}

html.chromium input[type="date"] {
  padding-right: 8px;
}

.color-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.color-field input[type="color"] {
  min-width: 64px;
  width: 64px;
  padding: 2px;
}

.directory-table-wrap {
  overflow-x: auto;
  margin: 10px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.directory-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
  font-size: 12px;
}

.directory-table th,
.directory-table td {
  border-bottom: 1px solid var(--border-soft);
  padding: 6px;
  text-align: left;
  vertical-align: top;
}

.directory-table th {
  color: var(--muted);
  background: var(--surface-2);
}

.directory-table td input[type="text"] {
  width: 100%;
}

.directory-table td input[type="color"] {
  width: 56px;
  min-width: 56px;
  padding: 2px;
}

.directory-table td input[type="checkbox"] {
  width: auto;
  min-width: 0;
  padding: 0;
}

.table-actions {
  display: flex;
  gap: 6px;
}

.danger-btn {
  background: var(--danger);
}

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

.timeline-color-chip {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--border-input);
  background: var(--chip-color, #9ecbff);
  vertical-align: middle;
}

#tzInfo {
  color: var(--muted);
}

.modal {
  position: fixed;
  inset: 0;
  background: var(--overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}

.modal.hidden {
  display: none;
}

.modal-card {
  width: min(520px, 92vw);
  background: var(--surface-4);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.modal-header h3 {
  margin: 0;
}

#modalCloseBtn {
  background: transparent;
  border: 1px solid var(--border-input);
  color: var(--text);
}

#modalBody {
  max-height: none;
  overflow: visible;
}

.details-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

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

.details-table th {
  width: 34%;
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 1180px) {
  .workspace,
  .app-shell {
    grid-template-columns: 1fr;
  }

  .calendar-card,
  .actions-card,
  .side-menu {
    grid-column: auto;
    position: static;
  }


  #loginSection {
    min-height: calc(100vh - 150px);
  }
}