/* === Layout === */

.screen {
  height: 100vh;
  width: 100vw;
}

#app-screen {
  display: grid;
  grid-template-columns: 256px 1fr;
  background: var(--bg-primary);
  height: 100vh;
  overflow: hidden;
  transition: grid-template-columns 180ms ease;
}

#app-screen.sidebar-collapsed {
  grid-template-columns: 0 1fr;
}

/* Sidebar */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow: hidden;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  transition: transform 180ms ease, opacity 140ms ease;
}

.sidebar.collapsed {
  transform: translateX(-100%);
  opacity: 0;
  pointer-events: none;
  padding-left: 0;
  padding-right: 0;
}

.sidebar-header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 4px 0;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar-section h3 {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 8px;
  margin-bottom: 2px;
}

/* Main */
.main-area {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100vh;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  min-height: 56px;
  flex-shrink: 0;
}

.period-label {
  font-size: 20px;
  font-weight: 400;
  margin: 0 8px;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

/* Search Box */
.search-box {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  min-width: 180px;
  max-width: 320px;
  flex-shrink: 0;
}

#search-input {
  flex: 1;
  padding: 6px 10px;
  border: none;
  background: transparent;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
  min-width: 0;
}

#search-input::placeholder {
  color: var(--text-tertiary);
}

#search-input:focus {
  outline: none;
}

.search-clear-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 14px;
  padding: 4px 6px;
  border-radius: 4px;
  transition: color 120ms ease, background 120ms ease;
}

.search-clear-btn:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

#search-input:not(:placeholder-shown) + #search-clear {
  display: block;
}

/* Notification Button */
#notifications-btn {
  font-size: 18px;
  opacity: 0.7;
  transition: opacity 200ms ease;
}

#notifications-btn:hover {
  opacity: 1;
}

.calendar-container {
  flex: 1;
  overflow: auto;
  background: var(--bg-primary);
  min-height: 0;
}

/* Auth-Card */
.auth-card {
  max-width: 400px;
  margin: 80px auto;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px;
  box-shadow: var(--shadow-lg);
}

.auth-card h1 {
  margin-bottom: 8px;
}

.auth-card p {
  margin: 0 0 24px;
}

#login-screen,
#setup-screen {
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Loading */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Kalender-Liste */
.sidebar-calendars {
  flex-shrink: 0;
}

.calendar-list-scroll {
  max-height: 220px;
  overflow-y: auto;
  margin: 0 -4px;
  padding: 0 4px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.calendar-list-scroll::-webkit-scrollbar {
  width: 4px;
}

.calendar-list-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.calendar-list-scroll::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

.calendar-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.calendar-list-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 120ms ease;
}

.calendar-list-item:hover {
  background: var(--bg-hover);
}

/* Farbiger Checkbox-Indikator */
.calendar-color-dot {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: white;
  font-weight: 700;
  transition: opacity 120ms ease;
  border: 2px solid transparent;
}

.calendar-list-item.dimmed .calendar-color-dot {
  background: transparent !important;
  border-color: currentColor;
  color: var(--text-tertiary);
}

.calendar-name {
  flex: 1;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calendar-list-item.dimmed .calendar-name {
  opacity: 0.45;
}

.calendar-list-item .icon-btn {
  visibility: hidden;
  font-size: 12px;
  padding: 2px 5px;
  width: 24px;
  height: 24px;
}

.calendar-list-item:hover .icon-btn {
  visibility: visible;
}

/* Ansicht-Schalter (Button-Gruppe) */
.view-buttons {
  display: flex;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}

.view-btn {
  padding: 5px 10px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: none;
  border-right: 1px solid var(--border);
  cursor: pointer;
  transition: background 100ms ease, color 100ms ease;
  white-space: nowrap;
}

.view-btn:last-child {
  border-right: none;
}

.view-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.view-btn.active {
  background: var(--accent);
  color: var(--accent-text);
}

/* Mini-Kalender */
.mini-calendar {
  font-size: 12px;
  padding: 0 4px;
}

.mini-cal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 13px;
}

.mini-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  text-align: center;
}

.mini-cal-grid .weekday {
  font-size: 10px;
  color: var(--text-tertiary);
  padding: 4px 0;
  font-weight: 600;
}

.mini-cal-day {
  padding: 4px 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 11px;
  line-height: 1;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 100ms ease;
}

.mini-cal-day:hover {
  background: var(--bg-hover);
}

.mini-cal-day.other-month {
  color: var(--text-tertiary);
}

.mini-cal-day.today {
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
}

.mini-cal-day.selected:not(.today) {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}