/* ==========================================================================
   CALENDAR.CSS — Kalender-Ansicht
   Monats-, Wochen- und Tagesansicht mit Drag-and-Drop
   ========================================================================== */

/* --------------------------------------------------------------------------
   Kalender-Container
   -------------------------------------------------------------------------- */
.calendar-container {
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* --------------------------------------------------------------------------
   Kalender-Kopfzeile — Navigation und Ansichtswechsel
   -------------------------------------------------------------------------- */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.calendar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Navigations-Buttons (Vor/Zurueck) */
.calendar-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  border: 1px solid var(--border-default);
  transition: all var(--transition-fast);
}

.calendar-nav-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* Aktueller Monat/Woche Titel — klickbar fuer Picker */
.calendar-title {
  font-size: var(--text-md);
  font-weight: 600;
  min-width: 180px;
  text-align: center;
}

.calendar-title:hover {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   Monat/Jahr-Picker — Dropdowns zum direkten Waehlen
   -------------------------------------------------------------------------- */
.calendar-picker {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.calendar-picker select {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-default);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition-fast);
}

.calendar-picker select:focus {
  border-color: var(--accent);
}

.calendar-picker select:hover {
  border-color: var(--border-strong);
}

/* Heute-Button */
.calendar-today-btn {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.calendar-today-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

/* --------------------------------------------------------------------------
   Ansichtswechsel (Monat / Woche / Tag)
   -------------------------------------------------------------------------- */
.calendar-view-switcher {
  display: flex;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.calendar-view-btn {
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  border-right: 1px solid var(--border-default);
}

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

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

.calendar-view-btn.active {
  background: var(--accent);
  color: #fff;
}


/* ==========================================================================
   MONATSANSICHT
   ========================================================================== */

/* --------------------------------------------------------------------------
   Wochentag-Kopfzeile (Mo - So)
   -------------------------------------------------------------------------- */
.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  margin-bottom: 1px;
}

.calendar-weekday {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  text-align: center;
}

/* --------------------------------------------------------------------------
   Monats-Raster (7 Spalten, automatische Zeilen)
   -------------------------------------------------------------------------- */
.calendar-month-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: minmax(100px, 1fr);
  gap: 1px;
  flex: 1;
}

/* --------------------------------------------------------------------------
   Tages-Zellen
   -------------------------------------------------------------------------- */
.calendar-day {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: var(--space-2);
  min-height: 100px;
  transition: all var(--transition-fast);
  overflow: hidden;
  cursor: default;
}

.calendar-day:hover {
  background: var(--bg-hover);
  border-color: var(--border-default);
}

/* Heutiger Tag — Akzent-Hervorhebung */
.calendar-day.today {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

/* Tage ausserhalb des aktuellen Monats */
.calendar-day.other-month {
  opacity: 0.4;
}

.calendar-day.other-month .calendar-day-number {
  color: var(--text-muted);
}

/* Tagesnummer */
.calendar-day-number {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.calendar-day.today .calendar-day-number {
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  box-shadow: 0 0 0 2px var(--accent-subtle);
}

/* --------------------------------------------------------------------------
   Kalender-Events (Task-Balken in Tages-Zellen)
   -------------------------------------------------------------------------- */
.calendar-events {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.calendar-event {
  padding: 1px 6px;
  border-radius: 3px;
  font-size: var(--text-xs);
  line-height: 1.5;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.calendar-event:hover {
  filter: brightness(1.2);
}

/* Event-Farben nach Prioritaet (P1-P4) */
.calendar-event.prio-p1 {
  background: rgba(239, 68, 68, 0.2);
  color: var(--prio-p1);
  border-left: 2px solid var(--prio-p1);
}
.calendar-event.prio-p2 {
  background: rgba(249, 115, 22, 0.2);
  color: var(--prio-p2);
  border-left: 2px solid var(--prio-p2);
}
.calendar-event.prio-p3 {
  background: rgba(218, 170, 63, 0.2);
  color: var(--prio-p3);
  border-left: 2px solid var(--prio-p3);
}
.calendar-event.prio-p4 {
  background: rgba(107, 114, 128, 0.2);
  color: var(--prio-p4);
  border-left: 2px solid var(--prio-p4);
}
/* Backwards-compatible alte Klassen */
.calendar-event.prio-hoch {
  background: rgba(239, 68, 68, 0.2);
  color: var(--prio-hoch);
  border-left: 2px solid var(--prio-hoch);
}
.calendar-event.prio-mittel {
  background: rgba(218, 170, 63, 0.2);
  color: var(--prio-mittel);
  border-left: 2px solid var(--prio-mittel);
}
.calendar-event.prio-niedrig {
  background: rgba(107, 114, 128, 0.2);
  color: var(--prio-niedrig);
  border-left: 2px solid var(--prio-niedrig);
}

/* Standard-Event ohne Prioritaet */
.calendar-event.prio-default {
  background: rgba(94, 106, 210, 0.15);
  color: var(--accent);
  border-left: 2px solid var(--accent);
}

/* Maximal 3 Events sichtbar — "mehr"-Anzeige */
.calendar-event:nth-child(n+4) {
  display: none;
}

.calendar-more {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  padding: 1px 6px;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.calendar-more:hover {
  color: var(--accent);
}

/* --------------------------------------------------------------------------
   Drag-Over-Zustand fuer Tages-Zellen
   -------------------------------------------------------------------------- */
.calendar-day.drag-over {
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: inset 0 0 0 1px var(--accent);
}


/* ==========================================================================
   WOCHENANSICHT
   ========================================================================== */

.calendar-week-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  flex: 1;
}

.calendar-week-day {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: var(--space-3);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.calendar-week-day:hover {
  border-color: var(--border-default);
}

.calendar-week-day.today {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.calendar-week-day-header {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-subtle);
}

.calendar-week-day-name {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
}

.calendar-week-day-number {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.calendar-week-day.today .calendar-week-day-number {
  color: var(--accent);
  font-weight: 600;
}

.calendar-week-events {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* Drag-Over-Zustand fuer Wochen-Zellen */
.calendar-week-day.drag-over {
  border-color: var(--accent);
  background: var(--accent-subtle);
  box-shadow: inset 0 0 0 1px var(--accent);
}


/* ==========================================================================
   TAGESANSICHT
   ========================================================================== */

.calendar-day-view {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 600px;
}

/* In der Tagesansicht werden vollstaendige Task-Karten gezeigt */
.calendar-day-view .task-card {
  width: 100%;
}

.calendar-day-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  color: var(--text-tertiary);
  font-size: var(--text-sm);
}


/* --------------------------------------------------------------------------
   Ghost Events — Zukuenftige wiederkehrende Task-Termine
   Halbtransparent mit gestricheltem Rand
   -------------------------------------------------------------------------- */
.calendar-event.ghost {
  opacity: 0.4;
  border-left-style: dashed;
  cursor: default;
}

.calendar-event.ghost:hover {
  filter: none;
  opacity: 0.5;
}