/**
 * @file
 * Frontend styles for Vertical Tabs component.
 */

/* Container */
.tabs-vertical {
  display: flex;
  border: 1px solid #e0e0e0;
  border-radius: 4px;
  overflow: hidden;
  margin: 1.5rem 0;
}

/* Navigation */
.tabs-vertical-nav {
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 0;
  background-color: #f8f9fa;
  border-right: 1px solid #e0e0e0;
  min-width: var(--vtabs-min-tab-width, 200px);
  flex-shrink: 0;
}

/* Tab button */
.tabs-vertical-button {
  display: block;
  width: 100%;
  padding: 0.75rem 1.25rem;
  background-color: transparent;
  border: none;
  border-bottom: 1px solid #e0e0e0;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  color: #495057;
  transition: background-color 0.2s ease, color 0.2s ease;
  text-align: left;
  position: relative;
}

.tabs-vertical-button:last-child {
  border-bottom: none;
}

/* Inline elements inside button — reset margins from CKEditor output */
.tabs-vertical-button p,
.tabs-vertical-button span {
  display: inline;
  margin: 0;
  padding: 0;
}

.tabs-vertical-button:hover {
  background-color: #e9ecef;
  color: #212529;
}

/* Active state */
.tabs-vertical-button.active {
  background-color: #fff;
  font-weight: 600;
  outline: none;
}

/* Remove focus outline on mouse click, keep for keyboard nav */
.tabs-vertical-button:focus {
  outline: none;
}
.tabs-vertical-button:focus-visible {
  outline: 2px solid #0066cc;
  outline-offset: -2px;
  z-index: 1;
}

/* Content container */
.tabs-vertical-content {
  flex: 1;
  position: relative;
  background-color: #fff;
  min-height: var(--vtabs-min-panel-height, auto);
  display: flex;
  flex-direction: column;
}

/* Panels */
.tabs-vertical-panel {
  padding: 1rem 1.25rem;
  display: none;
}

.tabs-vertical-panel.active {
  display: flex;
  flex-direction: column;
  flex: 1;
  animation: tabsVerticalFadeIn 0.3s ease;
}

.tabs-vertical-panel > *:first-child {
  margin-top: 0;
}

.tabs-vertical-panel > *:last-child {
  margin-bottom: 0;
}

@keyframes tabsVerticalFadeIn {
  from {
    opacity: 0;
    transform: translateX(10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Tab alignment */
.tabs-vertical[data-tab-alignment="center"] .tabs-vertical-nav {
  justify-content: center;
}
.tabs-vertical[data-tab-alignment="bottom"] .tabs-vertical-nav {
  justify-content: flex-end;
}
.tabs-vertical[data-tab-alignment="stretch"] .tabs-vertical-nav {
  justify-content: stretch;
}
.tabs-vertical[data-tab-alignment="stretch"] .tabs-vertical-button {
  flex: 1;
  height: 100%;
}
.tabs-vertical[data-tab-alignment="space-between"] .tabs-vertical-nav {
  justify-content: space-between;
}

/* Responsive: Tablet - convert to horizontal */
@media (max-width: 768px) {
  .tabs-vertical {
    flex-direction: column;
    min-height: auto;
  }

  .tabs-vertical-nav {
    flex-direction: row;
    border-right: none;
    border-bottom: 1px solid #e0e0e0;
    min-width: 100%;
    overflow-x: auto;
  }

  .tabs-vertical-button {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    white-space: nowrap;
    border-bottom: none;
    border-right: 1px solid #e0e0e0;
    flex-shrink: 0;
  }

  .tabs-vertical-button:last-child {
    border-right: none;
  }

  .tabs-vertical-button.active {
    border-right: none;
    margin-right: 0;
  }

  .tabs-vertical-panel {
    padding: 1rem;
  }
}

/* Print styles */
@media print {
  .tabs-vertical {
    flex-direction: column;
  }

  .tabs-vertical-nav {
    display: none;
  }

  .tabs-vertical-panel {
    display: block !important;
    page-break-inside: avoid;
    border-top: 1px solid #e0e0e0;
    margin-top: 1rem;
  }

  .tabs-vertical-panel::before {
    content: attr(data-tab-title);
    display: block;
    font-weight: bold;
    margin-bottom: 0.5rem;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .tabs-vertical-panel.active {
    animation: none;
  }
}