.calendar-main {
  width: min(1400px, 100%);
  margin: 0 auto;
  padding: 24px;
  flex: 1;
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}

.month-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0;
  transition: color 0.3s ease;
}

.nav-btn {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 10px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
  padding: 0;
}

.nav-btn svg {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.nav-btn:hover {
  background: var(--card-hover);
  border-color: var(--accent);
  transform: scale(1.05);
}

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

.calendar-status {
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text-muted);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 500;
  margin-bottom: 20px;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.calendar-container {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 24px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
  position: relative;
}

.calendar-wrapper {
  overflow: hidden;
  position: relative;
  width: 100%;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
}

.day-header {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 16px 8px;
  text-align: center;
  border-bottom: 2px solid var(--border);
  transition: color 0.3s ease, border-color 0.3s ease;
}

.calendar-day {
  min-height: 160px;
  max-height: 160px;
  border: 1px solid var(--border);
  padding: 8px;
  background: var(--card);
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease, max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.calendar-day.expanded {
  max-height: 800px;
}

.calendar-day:hover {
  background: var(--bg-secondary);
  transform: scale(1.02);
  z-index: 1;
  box-shadow: var(--shadow);
}

.calendar-day.other-month {
  background: var(--bg-secondary);
  opacity: 0.5;
}

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

[data-theme="dark"] .calendar-day.today {
  background: var(--accent-light);
}

.day-number {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
  transition: color 0.3s ease;
}

.calendar-day.today .day-number {
  color: var(--accent);
  font-weight: 700;
  font-size: 16px;
}

.day-tasks {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  overflow: visible;
}

.day-tasks.show-all {
  max-height: none;
}

.calendar-task {
  font-size: 11px;
  padding: 6px 8px;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  font-weight: 600;
  line-height: 1.3;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease, opacity 0.2s ease;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
  flex-shrink: 0;
  min-height: 28px;
  display: flex;
  align-items: center;
}

.calendar-task:hover {
  background: var(--accent-hover);
  transform: translateX(2px);
}

.calendar-task.completed {
  background: var(--text-muted);
  opacity: 0.6;
  text-decoration: line-through;
}

.calendar-task.completed:hover {
  background: var(--text-secondary);
  opacity: 0.8;
}

.calendar-task.overdue {
  background: var(--danger);
}

.calendar-task.overdue:hover {
  background: var(--danger);
  filter: brightness(1.1);
}

.task-time {
  font-size: 10px;
  opacity: 0.9;
  margin-right: 4px;
}

.more-tasks {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 600;
  text-align: center;
  padding: 4px;
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease;
  border-radius: 4px;
  user-select: none;
}

.more-tasks:hover {
  color: var(--accent);
  background: var(--bg-secondary);
}

/* Task Modal */
.task-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease-out;
}

.task-modal-backdrop.hidden {
  display: none;
}

.task-modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-width: 500px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes slideDown {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

.task-modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.task-modal-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.4;
  margin: 0;
  word-wrap: break-word;
  transition: color 0.3s ease;
}

.task-modal-body {
  padding: 24px;
}

.task-modal-section {
  margin-bottom: 20px;
}

.task-modal-section:last-child {
  margin-bottom: 0;
}

.task-modal-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
  transition: color 0.3s ease;
}

.task-modal-description {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  background: var(--bg-secondary);
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.task-modal-empty {
  font-size: 13px;
  color: var(--text-muted);
  font-style: italic;
  transition: color 0.3s ease;
}

.task-modal-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--accent);
  color: white;
  border-radius: 10px;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.task-modal-link:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.task-modal-checkbox-container {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
}

.task-modal-checkbox-container:hover {
  background: var(--card-hover);
  transform: translateX(2px);
}

.task-modal-checkbox {
  width: 20px;
  height: 20px;
  cursor: pointer;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.task-modal-checkbox-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
  transition: color 0.3s ease;
}

.task-modal-close {
  width: 100%;
  padding: 12px;
  margin-top: 20px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.task-modal-close:hover {
  background: var(--bg-secondary);
  border-color: var(--accent);
  color: var(--text);
}

@media (max-width: 1024px) {
  .calendar-day {
    min-height: 140px;
    max-height: 140px;
  }
  
  .calendar-day.expanded {
    max-height: 600px;
  }

  .day-tasks {
    gap: 3px;
  }

  .calendar-task {
    font-size: 10px;
    padding: 3px 5px;
  }
}

@media (max-width: 768px) {
  .calendar-main {
    padding: 16px;
  }

  .month-title {
    font-size: 22px;
  }

  .nav-btn {
    width: 40px;
    height: 40px;
  }

  .calendar-container {
    padding: 16px;
  }

  .calendar-day {
    min-height: 120px;
    max-height: 120px;
    padding: 6px;
  }
  
  .calendar-day.expanded {
    max-height: 500px;
  }

  .day-header {
    font-size: 10px;
    padding: 12px 4px;
  }

  .day-number {
    font-size: 12px;
  }

  .calendar-task {
    font-size: 9px;
    padding: 2px 4px;
  }

  .task-time {
    display: none;
  }
  
  .task-modal {
    max-width: 100%;
    max-height: 90vh;
  }
}

@media (max-width: 480px) {
  .calendar-header {
    margin-bottom: 16px;
  }

  .month-title {
    font-size: 18px;
  }

  .calendar-day {
    min-height: 100px;
    max-height: 100px;
    padding: 4px;
  }
  
  .calendar-day.expanded {
    max-height: 400px;
  }

  .day-number {
    font-size: 11px;
  }

  .calendar-task {
    font-size: 8px;
    padding: 2px 3px;
  }

  .more-tasks {
    font-size: 9px;
  }
  
  .task-modal-body {
    padding: 16px;
  }
  
  .task-modal-header {
    padding: 16px;
  }
}