/* Conference Detail Page Action Buttons */

:root {
  --btn-action-primary: #3776ab;
  --btn-action-primary-hover: #2a5a87;
  --btn-action-secondary: #f8f9fa;
  --btn-action-secondary-hover: #e9ecef;
  --btn-action-text: #212529;
  --btn-action-border: #dee2e6;
  --btn-action-shadow: rgba(0, 0, 0, 0.1);
  --btn-action-radius: 8px;
  --btn-action-transition: all 0.2s ease;
}

/* Action Buttons Container */
.conference-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 24px 0;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

/* Base Button Style */
.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid var(--btn-action-border);
  border-radius: var(--btn-action-radius);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--btn-action-transition);
  text-decoration: none;
  background: var(--btn-action-secondary);
  color: var(--btn-action-text);
  box-shadow: 0 2px 4px var(--btn-action-shadow);
}

.btn-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px var(--btn-action-shadow);
  text-decoration: none;
}

.btn-action:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px var(--btn-action-shadow);
}

.btn-action i {
  font-size: 18px;
}

/* Primary Button (Follow Series) */
.btn-action-primary {
  background: var(--btn-action-primary);
  color: white;
  border-color: var(--btn-action-primary);
}

.btn-action-primary:hover {
  background: var(--btn-action-primary-hover);
  border-color: var(--btn-action-primary-hover);
  color: white;
}

.btn-action-primary.active {
  background: #ffd43b;
  border-color: #ffd43b;
  color: #333;
}

.btn-action-primary.active i {
  color: #333;
}

/* Secondary Buttons (Save, Calendar) */
.btn-action-secondary {
  background: var(--btn-action-secondary);
  color: var(--btn-action-text);
}

.btn-action-secondary:hover {
  background: var(--btn-action-secondary-hover);
  color: var(--btn-action-text);
}

.btn-action-secondary.active {
  background: var(--btn-action-primary);
  color: white;
  border-color: var(--btn-action-primary);
}

/* Calendar Dropdown Wrapper */
.btn-action-calendar-wrapper {
  position: relative;
  display: inline-block;
}

.calendar-dropdown-arrow {
  font-size: 12px;
  margin-left: 4px;
  transition: transform 0.2s ease;
}

.btn-action-calendar-wrapper:hover .calendar-dropdown-arrow,
.btn-action-calendar-wrapper:focus-within .calendar-dropdown-arrow {
  transform: rotate(180deg);
}

/* Calendar Dropdown Menu */
.calendar-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 200px;
  background: white;
  border: 1px solid var(--btn-action-border);
  border-radius: var(--btn-action-radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  padding: 8px;
  display: none;
  z-index: 1000;
  animation: dropdownSlide 0.2s ease;
}

@keyframes dropdownSlide {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn-action-calendar-wrapper:hover .calendar-dropdown-menu,
.btn-action-calendar-wrapper:focus-within .calendar-dropdown-menu {
  display: block;
}

.calendar-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s ease;
  color: var(--btn-action-text);
  text-decoration: none;
  font-size: 14px;
}

.calendar-option:hover {
  background: var(--btn-action-secondary-hover);
  color: var(--btn-action-text);
  text-decoration: none;
}

.calendar-option i {
  width: 20px;
  font-size: 16px;
  color: #6c757d;
}

.calendar-option:hover i {
  color: var(--btn-action-primary);
}

/* Active/Saved States */
.btn-save-conference.active i {
  color: white;
}

.btn-follow-series.active {
  background: #ffd43b;
  border-color: #ffd43b;
  color: #333;
}

.btn-follow-series.active i {
  color: #333;
  animation: bell-ring 0.5s ease;
}

@keyframes bell-ring {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-15deg); }
  75% { transform: rotate(15deg); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .conference-actions {
    flex-direction: column;
    gap: 10px;
    padding: 16px 0;
  }

  .btn-action {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
    font-size: 15px;
  }

  .btn-text {
    display: inline;
  }

  .calendar-dropdown-menu {
    left: 0;
    right: 0;
    width: 100%;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .btn-action {
    padding: 12px 16px;
    font-size: 14px;
  }

  .btn-action i {
    font-size: 16px;
  }

  .btn-text {
    font-size: 14px;
  }
}

/* Loading State */
.btn-action.loading {
  opacity: 0.6;
  pointer-events: none;
}

.btn-action.loading::after {
  content: '';
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: 8px;
}

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

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  :root {
    --btn-action-secondary: #2a2a2a;
    --btn-action-secondary-hover: #3a3a3a;
    --btn-action-text: #e0e0e0;
    --btn-action-border: #444;
    --btn-action-shadow: rgba(0, 0, 0, 0.3);
  }

  .calendar-dropdown-menu {
    background: #2a2a2a;
    border-color: #444;
  }

  .calendar-option {
    color: #e0e0e0;
  }

  .calendar-option:hover {
    background: #3a3a3a;
    color: #e0e0e0;
  }
}

/* Notification Toasts */
.conf-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  color: white;
  padding: 12px 24px;
  border-radius: 6px;
  z-index: 9999;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  animation: dropdownSlide 0.3s ease;
}

.conf-notification-success {
  background: var(--btn-action-primary);
}

.conf-notification-info {
  background: #17a2b8;
}

.conf-notification-warning {
  background: #ffc107;
  color: #333;
}

/* Accessibility */
.btn-action:focus {
  outline: 2px solid var(--btn-action-primary);
  outline-offset: 2px;
}

.btn-action:focus:not(:focus-visible) {
  outline: none;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .btn-action {
    border-width: 2px;
  }

  .btn-action-primary {
    background: #000;
    color: #fff;
  }
}