/* ==========================================================================
   Calendar View — Outlook Desktop & Mobile Architecture
   Implements Frontend Design Skill (Anthropic Design Studio & Fluent Cues)
   ========================================================================== */

:root {
  --cal-border: #e2e8f0;
  --cal-border-subtle: #f1f5f9;
  --cal-bg-tile: #ffffff;
  --cal-bg-outside: #f8fafc;
  --cal-bg-today: #f0fdf4;
  --cal-selected-bg: #194333;
  --cal-selected-text: #ffffff;
  --cal-accent-green: #10b981;
  --cal-accent-blue: #0284c7;
  --cal-accent-amber: #d97706;
  --cal-accent-purple: #7c3aed;
  --cal-tile-height: 124px;
}

/* Page inner layout */
.calendar-page {
  padding: var(--space-4) var(--space-4) var(--space-12);
}

.calendar-page__inner {
  max-width: 1360px;
  width: 100%;
  margin: 0 auto;
}

/* ==========================================================================
   Outlook-Style Calendar Header Bar
   ========================================================================== */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  background: white;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--cal-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.calendar-header__left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.calendar-header__nav {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-neutral-50);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--cal-border);
}

.calendar-nav-btn {
  background: white;
  border: 1px solid var(--cal-border);
  color: var(--color-neutral-700);
  border-radius: var(--radius-sm);
  width: 34px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.calendar-nav-btn:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  border-color: var(--color-primary-300);
}

.calendar-nav-btn--today {
  width: auto;
  padding: 0 12px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.calendar-header__month-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-neutral-900);
  letter-spacing: -0.01em;
  margin: 0;
  min-width: 190px;
}

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

/* View Switcher Tabs (Outlook Style) */
.calendar-view-switcher {
  display: inline-flex;
  background: var(--color-neutral-100);
  padding: 3px;
  border-radius: var(--radius-md);
  border: 1px solid var(--cal-border);
}

.calendar-view-btn {
  border: none;
  background: transparent;
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-neutral-600);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.calendar-view-btn:hover {
  color: var(--color-neutral-900);
}

.calendar-view-btn.is-active {
  background: white;
  color: var(--color-primary-700);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

/* ==========================================================================
   Desktop Grid: Strictly Equal Tiles ("alle Kacheln immer gleich groß")
   ========================================================================== */
.calendar-desktop-view {
  display: block;
}

.calendar-grid-wrapper {
  background: white;
  border: 1px solid var(--cal-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  width: 100%;
}

.calendar-grid__weekday {
  background: #f8fafc;
  color: #475569;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-align: center;
  padding: 10px 4px;
  border-bottom: 1px solid var(--cal-border);
  border-right: 1px solid var(--cal-border-subtle);
}

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

/* Strict uniform cell styling */
.calendar-grid__cell {
  height: var(--cal-tile-height);
  min-height: var(--cal-tile-height);
  max-height: var(--cal-tile-height);
  box-sizing: border-box;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 6px 8px;
  position: relative;
  background: var(--cal-bg-tile);
  border-bottom: 1px solid var(--cal-border);
  border-right: 1px solid var(--cal-border);
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.calendar-grid__cell:nth-child(7n) {
  border-right: none;
}

.calendar-grid__cell:hover {
  background: #f1f8f4;
}

/* Outside month tiles */
.calendar-grid__cell--outside {
  background: var(--cal-bg-outside);
  opacity: 0.6;
}

.calendar-grid__cell--outside:hover {
  background: #eef2f6;
}

/* Today tile */
.calendar-grid__cell--today {
  background: var(--cal-bg-today);
}

/* Selected tile */
.calendar-grid__cell--selected {
  background: #e8f5ed;
  box-shadow: inset 0 0 0 2px var(--color-primary-600);
}

/* Cell Header */
.calendar-grid__cell-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
  flex-shrink: 0;
}

.calendar-grid__date-number {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: #334155;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.calendar-grid__cell--today .calendar-grid__date-number {
  background: var(--color-primary-600);
  color: white;
  font-weight: 700;
}

.calendar-grid__cell--outside .calendar-grid__date-number {
  color: #94a3b8;
}

.calendar-grid__cell-indicator {
  font-size: 0.6875rem;
  color: var(--color-primary-600);
  font-weight: 600;
}

/* Cell Events Container */
.calendar-grid__events-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  overflow: hidden;
  flex: 1;
}

/* Outlook-style event chip */
.calendar-event-chip {
  display: flex;
  align-items: center;
  gap: 5px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-left: 3px solid var(--cal-accent-green);
  border-radius: 3px;
  padding: 2px 5px;
  font-size: 0.6875rem;
  line-height: 1.35;
  color: #1e293b;
  cursor: pointer;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.calendar-event-chip:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
  border-color: #cbd5e1;
}

.calendar-event-chip__time {
  font-weight: 700;
  color: #0f172a;
  flex-shrink: 0;
}

.calendar-event-chip__title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Color variations for category feel */
.calendar-event-chip--color-0 {
  border-left-color: #10b981;
  background: #f0fdf4;
}

.calendar-event-chip--color-1 {
  border-left-color: #0284c7;
  background: #f0f9ff;
}

.calendar-event-chip--color-2 {
  border-left-color: #d97706;
  background: #fffbeb;
}

.calendar-event-chip--color-3 {
  border-left-color: #8b5cf6;
  background: #fbf5ff;
}

/* "+X more" Pill */
.calendar-event-more {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-primary-700);
  background: rgba(16, 185, 129, 0.08);
  border-radius: 3px;
  padding: 1px 5px;
  text-align: left;
  display: inline-block;
  cursor: pointer;
  margin-top: 1px;
}

.calendar-event-more:hover {
  background: rgba(16, 185, 129, 0.16);
}

/* ==========================================================================
   Outlook Mobile View (Split: Mini Grid on Top + Agenda Below)
   ========================================================================== */
.calendar-mobile-view {
  display: none;
}

.calendar-mobile-card {
  background: white;
  border: 1px solid var(--cal-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* Mini Month Calendar Strip */
.calendar-mobile-minigrid {
  padding: var(--space-3) var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--cal-border);
  background: #fafaf9;
}

.calendar-mobile-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  margin-bottom: 6px;
}

.calendar-mobile-weekday {
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: #64748b;
  padding: 4px 0;
}

.calendar-mobile-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

/* Strictly equal square tiles on mobile */
.calendar-mobile-tile {
  aspect-ratio: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  padding: 0;
  min-height: 40px;
}

.calendar-mobile-tile:hover {
  background: #f1f5f9;
}

.calendar-mobile-tile__number {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: #1e293b;
  line-height: 1;
}

.calendar-mobile-tile--outside .calendar-mobile-tile__number {
  color: #cbd5e1;
}

.calendar-mobile-tile--today .calendar-mobile-tile__number {
  color: var(--color-primary-700);
  font-weight: 800;
}

.calendar-mobile-tile--today {
  box-shadow: inset 0 0 0 1.5px var(--color-primary-500);
}

/* Selected Date in Outlook Mobile: bold circular badge */
.calendar-mobile-tile.is-selected {
  background: var(--cal-selected-bg) !important;
  box-shadow: 0 2px 6px rgba(25, 67, 51, 0.3);
}

.calendar-mobile-tile.is-selected .calendar-mobile-tile__number {
  color: var(--cal-selected-text) !important;
  font-weight: 700;
}

/* Outlook Dots container */
.calendar-mobile-tile__dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  height: 5px;
  margin-top: 3px;
}

.calendar-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--cal-accent-green);
  flex-shrink: 0;
}

.calendar-dot--1 { background: var(--cal-accent-green); }
.calendar-dot--2 { background: var(--cal-accent-blue); }
.calendar-dot--3 { background: var(--cal-accent-amber); }

.calendar-mobile-tile.is-selected .calendar-dot {
  background: #86efac;
}

/* ==========================================================================
   Mobile Day Agenda (Directly underneath the Mini Grid)
   ========================================================================== */
.calendar-mobile-agenda {
  padding: var(--space-4);
  background: white;
}

.calendar-agenda-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--cal-border);
}

.calendar-agenda-date {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-neutral-900);
  margin: 0;
}

.calendar-agenda-count-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--color-neutral-100);
  color: var(--color-neutral-700);
  white-space: nowrap;
}

.calendar-agenda-count-badge.has-events {
  background: #e8f5ed;
  color: var(--color-primary-700);
}

/* Agenda Timeline stream */
.calendar-agenda-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.calendar-agenda-card {
  display: flex;
  background: white;
  border: 1px solid var(--cal-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.calendar-agenda-card:hover {
  border-color: #cbd5e1;
}

.calendar-agenda-card__color-bar {
  width: 5px;
  background: var(--cal-accent-green);
  flex-shrink: 0;
}

.calendar-agenda-card--color-0 .calendar-agenda-card__color-bar { background: var(--cal-accent-green); }
.calendar-agenda-card--color-1 .calendar-agenda-card__color-bar { background: var(--cal-accent-blue); }
.calendar-agenda-card--color-2 .calendar-agenda-card__color-bar { background: var(--cal-accent-amber); }
.calendar-agenda-card--color-3 .calendar-agenda-card__color-bar { background: var(--cal-accent-purple); }

.calendar-agenda-card__content {
  padding: var(--space-3) var(--space-4);
  flex: 1;
  min-width: 0;
}

.calendar-agenda-card__time {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary-700);
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.calendar-agenda-card__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0 0 4px 0;
  word-break: break-word;
}

.calendar-agenda-card__desc {
  font-size: 0.875rem;
  color: #475569;
  margin: 4px 0 8px 0;
  line-height: 1.45;
  white-space: pre-line;
}

.calendar-agenda-card__meta {
  font-size: 0.75rem;
  color: #64748b;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.calendar-agenda-card__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: 1px solid #f1f5f9;
  flex-wrap: wrap;
}

/* Agenda Empty State (Designer Restraint) */
.calendar-agenda-empty {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  background: #fdfdfc;
  border: 1px dashed var(--cal-border);
  border-radius: var(--radius-md);
}

.calendar-agenda-empty__icon {
  color: #94a3b8;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.calendar-agenda-empty__title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: #1e293b;
  margin: 0 0 4px 0;
}

.calendar-agenda-empty__text {
  font-size: 0.8125rem;
  color: #64748b;
  margin: 0;
}

/* ==========================================================================
   Full Month List View (Continuous Agenda)
   ========================================================================== */
.calendar-monthlist-view {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.calendar-monthlist-day-group {
  background: white;
  border: 1px solid var(--cal-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
}

.calendar-monthlist-day-header {
  background: #f8fafc;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--cal-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calendar-monthlist-day-title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: #0f172a;
  display: flex;
  align-items: center;
  gap: 8px;
}

.calendar-monthlist-items {
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ==========================================================================
   Responsive Breakpoints & Mobile Adaptations
   ========================================================================== */
@media (max-width: 860px) {
  /* On tablets and mobile: Show the Outlook Mobile Split View */
  .calendar-desktop-view {
    display: none;
  }

  .calendar-mobile-view {
    display: block;
  }

  .calendar-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-3);
  }

  .calendar-header__left {
    justify-content: space-between;
    width: 100%;
  }

  .calendar-header__month-title {
    font-size: 1.125rem;
    min-width: auto;
    text-align: center;
    flex: 1;
  }

  .calendar-header__right {
    justify-content: space-between;
    width: 100%;
  }

  .calendar-view-switcher {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .calendar-view-btn {
    justify-content: center;
  }

  .calendar-header__new-btn {
    display: none;
  }
}

@media (min-width: 861px) {
  .calendar-mobile-view {
    display: none !important;
  }

  .calendar-desktop-view {
    display: block !important;
  }
}

/* ==========================================================================
   Event Form & Modals (Fluent / Frontend Design Polished)
   ========================================================================== */
.event-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.event-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 600px) {
  .event-form__row {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
}

.confirm-body {
  text-align: center;
  padding: var(--space-4) 0;
}

.confirm-body p {
  font-size: 0.95rem;
  color: var(--color-neutral-700);
  line-height: 1.5;
}