/*
 * CALENDAR GRID STYLES
 * Standard 7-column monthly calendar with touch-friendly buttons
 * Color-coded read status: Green (≥80%), Amber (40-79%), Red (<40%), Grey (future/no articles)
 */

:root {
  --cal-accent: #fc7306;
  --cal-green: #10b981;
  --cal-amber: #f59e0b;
  --cal-red: #ef4444;
  --cal-grey: #9ca3af;
  --cal-bg: #f9fafb;
  --cal-surface: #ffffff;
  --cal-text: #1f2937;
  --cal-text-light: #6b7280;
}

/* Calendar Section Container */
.calendar-section {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  padding: 1.5rem;
  background: var(--cal-bg);
  border-radius: 1rem;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.05);
}

/* Calendar Header: Prev Arrow | Month Year | Next Arrow */
.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

/* Navigation Arrows */
.calendar-nav-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--cal-accent);
  background: var(--cal-surface);
  color: var(--cal-accent);
  font-size: 1.25rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.calendar-nav-btn:hover {
  background: var(--cal-accent);
  color: white;
  transform: scale(1.05);
}

.calendar-nav-btn:active {
  transform: scale(0.95);
}

/* Month/Year Selectors Container */
.calendar-month-year {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex: 1;
}

/* Select Dropdowns */
.calendar-select {
  padding: 0.6rem 1rem;
  border-radius: 12px;
  border: 2px solid var(--cal-accent);
  background: var(--cal-surface);
  color: var(--cal-text);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  transition: all 0.2s ease;
  min-height: 44px;
}

.calendar-select:hover {
  background: rgba(252, 115, 6, 0.05);
}

.calendar-select:focus {
  box-shadow: 0 0 0 3px rgba(252, 115, 6, 0.2);
}

#monthSelect {
  min-width: 120px;
}

#yearSelect {
  min-width: 90px;
}

/* Weekday Headers */
.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  margin-bottom: 8px;
  text-align: center;
}

.weekday-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--cal-text-light);
  padding: 0.5rem 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.weekday-label.sun {
  color: var(--cal-accent);
  font-weight: 700;
}

/* Calendar Grid - 7 Columns */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

/* Individual Day Cells - Perfect Circles with Neutral Border */
.calendar-day {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
  position: relative;
  border: 2px solid #d1d5db;
  background: var(--cal-surface);
  color: var(--cal-text);
  margin: 0 auto;
}

.calendar-day:hover {
  border-color: var(--cal-accent);
  background: rgba(252, 115, 6, 0.05);
  transform: scale(1.08);
}

/* Empty cells (padding for first week) */
.calendar-day.empty {
  background: transparent;
  cursor: default;
  border: none;
  visibility: hidden;
}

/* Day number */
.calendar-day .day-number {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
}

/* Color dot below the number - the ONLY status indicator */
.calendar-day .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  margin-top: 2px;
  position: absolute;
  bottom: 6px;
}

/* ========== COLOR STATES - Only affects the dot ========== */
/* Override generic .red/.green/.amber classes from inline CSS */

/* Green: ≥80% read */
.calendar-day.green {
  background: var(--cal-surface) !important;
  border-color: #d1d5db;
  color: var(--cal-text);
}
.calendar-day.green .status-dot {
  background: var(--cal-green);
}

/* Amber: 40-79% read */
.calendar-day.amber {
  background: var(--cal-surface) !important;
  border-color: #d1d5db;
  color: var(--cal-text);
}
.calendar-day.amber .status-dot {
  background: var(--cal-amber);
}

/* Red: <40% read */
.calendar-day.red {
  background: var(--cal-surface) !important;
  border-color: #d1d5db;
  color: var(--cal-text);
}
.calendar-day.red .status-dot {
  background: var(--cal-red);
}

/* Grey: Future or no articles */
.calendar-day.grey {
  opacity: 0.4;
  cursor: not-allowed;
}

.calendar-day.grey:hover {
  transform: none;
  border-color: #d1d5db;
  background: var(--cal-surface);
}

.calendar-day.grey .status-dot {
  display: none;
}

/* Today indicator - Orange border highlight */
.calendar-day.today {
  border-color: var(--cal-accent);
  border-width: 2.5px;
  font-weight: 700;
}

/* Sunday column styling - subtle accent */
.calendar-day.sunday {
  color: var(--cal-accent);
  font-weight: 700;
}

/* ========== LEGEND ========== */
.calendar-legend {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--cal-text-light);
}

.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.legend-dot.green {
  background: var(--cal-green);
}

.legend-dot.amber {
  background: var(--cal-amber);
}

.legend-dot.red {
  background: var(--cal-red);
}

/* ========== TOOLTIP ========== */
.calendar-day[data-tooltip] {
  position: relative;
}

.calendar-day[data-tooltip]:hover::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.9);
  color: white;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
  z-index: 1000;
  pointer-events: none;
}

.calendar-day[data-tooltip]:hover::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  pointer-events: none;
}

/* ========== RESPONSIVE - MOBILE ========== */
@media (max-width: 480px) {
  .calendar-section {
    padding: 1rem;
    border-radius: 0.75rem;
  }

  .calendar-nav-btn {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .calendar-select {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    min-height: 38px;
  }

  #monthSelect {
    min-width: 90px;
  }

  #yearSelect {
    min-width: 70px;
  }

  .calendar-grid {
    gap: 4px;
  }

  .calendar-day {
    width: 38px;
    height: 38px;
  }

  .calendar-day .day-number {
    font-size: 0.85rem;
  }

  .calendar-day .status-dot {
    width: 5px;
    height: 5px;
    bottom: 5px;
  }

  .weekday-label {
    font-size: 0.65rem;
  }

  .calendar-legend {
    gap: 0.75rem;
  }

  .legend-item {
    font-size: 0.65rem;
  }

  .legend-dot {
    width: 10px;
    height: 10px;
  }
}

/* ========== RESPONSIVE - TABLET ========== */
@media (min-width: 481px) and (max-width: 768px) {
  .calendar-section {
    max-width: 420px;
  }

  .calendar-day {
    width: 42px;
    height: 42px;
  }
}

/* ========== LOADING STATE ========== */
.calendar-day.loading {
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}