/* Neptune Observatory — Component Styles */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-standard);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-neptune-bright), var(--color-storm-accent));
  color: #fff;
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--color-neptune-glow);
  border: 2px solid var(--color-neptune-glow);
}

.btn-secondary:hover {
  background: rgba(126, 184, 255, 0.1);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  color: var(--color-text-secondary);
}

.btn-icon:hover {
  color: var(--color-neptune-glow);
  border-color: var(--color-neptune-glow);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Cards */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-smooth);
}

.card:hover {
  border-color: var(--color-neptune-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
}

.card-body h3 {
  margin-bottom: 0.5rem;
}

.card-body p {
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.card-link:hover {
  color: inherit;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}

.form-label .required {
  color: var(--color-danger);
  margin-left: 0.25rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-primary);
  background: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-standard), box-shadow var(--transition-standard);
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--color-neptune-glow);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-neptune-bright);
  box-shadow: 0 0 0 3px rgba(74, 124, 247, 0.2);
  outline: none;
}

.form-input::placeholder {
  color: var(--color-text-secondary);
  opacity: 0.6;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%239fa8da' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-error {
  color: var(--color-danger);
  font-size: 0.875rem;
  margin-top: 0.375rem;
}

.form-input.is-invalid,
.form-select.is-invalid {
  border-color: var(--color-danger);
}

/* Fieldset and Legend */
.form-fieldset {
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-fieldset legend {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text-primary);
  padding: 0 0.5rem;
}

/* Checkbox and Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
}

.form-check input[type="radio"],
.form-check input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--color-neptune-bright);
  cursor: pointer;
}

.form-check label {
  cursor: pointer;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* Custom fake checkbox/radio for inaccessible version */
.fake-radio,
.fake-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-input-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
  transition: all var(--transition-standard);
}

.fake-radio {
  border-radius: 50%;
}

.fake-checkbox {
  border-radius: var(--radius-sm);
}

.fake-radio.selected {
  border-color: var(--color-neptune-bright);
}

.fake-radio.selected::after {
  content: '';
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-neptune-bright);
}

.fake-checkbox.selected {
  border-color: var(--color-neptune-bright);
  background: var(--color-neptune-bright);
}

.fake-checkbox.selected::after {
  content: '✓';
  color: #fff;
  font-size: 14px;
  font-weight: 700;
}

/* Custom fake select */
.fake-select {
  position: relative;
}

.fake-select-trigger {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-primary);
  background: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.fake-select-trigger::after {
  content: '▾';
  color: var(--color-text-secondary);
}

.fake-select-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-neptune-deep);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  margin-top: 4px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 50;
  display: none;
}

.fake-select-dropdown.open {
  display: block;
}

.fake-select-option {
  padding: 0.625rem 1rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: background var(--transition-standard);
}

.fake-select-option:hover {
  background: rgba(126, 184, 255, 0.1);
  color: var(--color-text-primary);
}

/* Combobox / Autocomplete */
.combobox-wrapper {
  position: relative;
}

.combobox-listbox {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-neptune-deep);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  margin-top: 4px;
  max-height: 200px;
  overflow-y: auto;
  z-index: 50;
  display: none;
}

.combobox-listbox.open {
  display: block;
}

.combobox-option {
  padding: 0.625rem 1rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: background var(--transition-standard);
}

.combobox-option:hover,
.combobox-option.focused {
  background: rgba(126, 184, 255, 0.1);
  color: var(--color-text-primary);
}

.combobox-option[aria-selected="true"] {
  background: rgba(74, 124, 247, 0.2);
  color: var(--color-text-primary);
}

/* Tables */
.data-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.data-table caption {
  padding: 1rem 1.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  text-align: left;
  background: var(--color-neptune-surface);
  color: var(--color-text-primary);
}

.data-table th,
.data-table td {
  padding: 0.875rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--color-card-border);
}

.data-table thead th {
  background: var(--color-neptune-surface);
  color: var(--color-text-primary);
  font-weight: 600;
  white-space: nowrap;
}

.data-table tbody tr {
  transition: background var(--transition-standard);
}

.data-table tbody tr:hover {
  background: rgba(126, 184, 255, 0.05);
}

.data-table tbody td {
  color: var(--color-text-secondary);
}

.data-table th[aria-sort] {
  padding: 0;
}

.sort-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.875rem 1.25rem;
  background: none;
  border: none;
  color: inherit;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  text-align: left;
}

.sort-btn::after {
  font-size: 0.75rem;
}

th[aria-sort="ascending"] .sort-btn::after {
  content: '▲';
}

th[aria-sort="descending"] .sort-btn::after {
  content: '▼';
}

th[aria-sort="none"] .sort-btn::after {
  content: '↕';
  opacity: 0.4;
}

.sort-btn:hover {
  background: rgba(126, 184, 255, 0.1);
}

/* Fake table (div-based for inaccessible version) */
.fake-table {
  font-size: 0.9375rem;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.fake-table-caption {
  padding: 1rem 1.5rem;
  font-weight: 700;
  font-size: 1.125rem;
  background: var(--color-neptune-surface);
  color: var(--color-text-primary);
}

.fake-table-header,
.fake-table-row {
  display: grid;
  border-bottom: 1px solid var(--color-card-border);
}

.fake-table-header {
  background: var(--color-neptune-surface);
}

.fake-table-cell {
  padding: 0.875rem 1.25rem;
  color: var(--color-text-secondary);
}

.fake-table-header .fake-table-cell {
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Accordion */
.accordion {
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
}

.accordion-item {
  border-bottom: 1px solid var(--color-card-border);
}

.accordion-item:first-child .accordion-trigger {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.accordion-item:last-child .accordion-trigger {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.accordion-item:last-child .accordion-trigger[aria-expanded="true"],
.accordion-item:last-child .accordion-trigger.expanded {
  border-radius: 0;
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.125rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-standard);
}

.accordion-trigger:hover {
  background: rgba(126, 184, 255, 0.05);
}

.accordion-trigger-icon {
  transition: transform var(--transition-smooth);
  flex-shrink: 0;
  color: var(--color-text-secondary);
}

.accordion-trigger[aria-expanded="true"] .accordion-trigger-icon,
.accordion-trigger.expanded .accordion-trigger-icon {
  transform: rotate(180deg);
}

.accordion-panel {
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.accordion-panel[hidden] {
  display: none;
}

/* Tabs */
.tabs-container {
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.tab-list {
  display: flex;
  background: var(--color-neptune-surface);
  border-bottom: 1px solid var(--color-card-border);
  overflow-x: auto;
}

.tab-item {
  padding: 1rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-standard);
}

.tab-item:hover {
  color: var(--color-text-primary);
  background: rgba(126, 184, 255, 0.05);
}

.tab-item[aria-selected="true"],
.tab-item.active {
  color: var(--color-neptune-glow);
  border-bottom-color: var(--color-neptune-bright);
}

.tab-panel {
  padding: 1.5rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.tab-panel[hidden] {
  display: none;
}

/* Carousel */
.carousel {
  position: relative;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.carousel-viewport {
  position: relative;
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform var(--transition-smooth);
}

.carousel-slide {
  min-width: 100%;
  padding: 2rem;
}

.carousel-slide-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
}

.carousel-slide h3 {
  margin-bottom: 0.5rem;
}

.carousel-slide p {
  font-size: 0.9375rem;
}

.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--color-neptune-surface);
  border-top: 1px solid var(--color-card-border);
}

.carousel-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 50%;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-standard);
}

.carousel-btn:hover {
  color: var(--color-neptune-glow);
  border-color: var(--color-neptune-glow);
}

.carousel-indicators {
  display: flex;
  gap: 0.5rem;
}

.carousel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--color-text-secondary);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-standard);
}

.carousel-dot.active,
.carousel-dot[aria-current="true"] {
  background: var(--color-neptune-bright);
  border-color: var(--color-neptune-bright);
}

/* Modal/Dialog */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  background: var(--color-neptune-deep);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-card-border);
}

.modal-header h2 {
  font-size: 1.25rem;
  margin: 0;
}

.modal-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-standard);
}

.modal-close:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-primary);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-card-border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Date Picker */
.date-picker {
  background: var(--color-neptune-deep);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
  width: 320px;
}

.date-picker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.date-picker-header button,
.date-picker-header .date-picker-nav {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition-standard);
}

.date-picker-header button:hover,
.date-picker-header .date-picker-nav:hover {
  color: var(--color-text-primary);
  border-color: var(--color-text-primary);
}

.date-picker-title {
  font-weight: 600;
  color: var(--color-text-primary);
}

.date-picker-grid {
  width: 100%;
  border-collapse: collapse;
}

.date-picker-grid th {
  padding: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  text-align: center;
  text-transform: uppercase;
}

.date-picker-grid td {
  padding: 2px;
  text-align: center;
}

.date-picker-day {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-standard);
}

.date-picker-day:hover {
  background: rgba(126, 184, 255, 0.15);
  color: var(--color-text-primary);
}

.date-picker-day.today {
  border: 1px solid var(--color-neptune-bright);
}

.date-picker-day[aria-selected="true"],
.date-picker-day.selected {
  background: var(--color-neptune-bright);
  color: #fff;
}

.date-picker-day.other-month {
  opacity: 0.3;
}

/* Disclosure / Dropdown Menus */
.disclosure-nav {
  display: flex;
  gap: 0.25rem;
}

.disclosure-menu {
  position: relative;
}

.disclosure-trigger {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: color var(--transition-standard), background var(--transition-standard);
}

.disclosure-trigger:hover {
  color: var(--color-text-primary);
  background: rgba(126, 184, 255, 0.1);
}

.disclosure-trigger-icon {
  font-size: 0.625rem;
  transition: transform var(--transition-standard);
}

.disclosure-trigger[aria-expanded="true"] .disclosure-trigger-icon,
.disclosure-trigger.expanded .disclosure-trigger-icon {
  transform: rotate(180deg);
}

.disclosure-panel {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-neptune-deep);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  margin-top: 4px;
  z-index: 50;
  box-shadow: var(--shadow-card);
  display: none;
}

.disclosure-panel.open {
  display: block;
}

.disclosure-panel a,
.disclosure-panel .disclosure-item {
  display: block;
  padding: 0.625rem 1rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  transition: all var(--transition-standard);
}

.disclosure-panel a:hover,
.disclosure-panel .disclosure-item:hover {
  color: var(--color-text-primary);
  background: rgba(126, 184, 255, 0.1);
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-neptune-glow);
  text-decoration: underline;
}

.breadcrumb-separator {
  color: var(--color-text-secondary);
  opacity: 0.4;
}

.breadcrumb [aria-current="page"] {
  color: var(--color-text-primary);
  font-weight: 500;
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.25rem;
}

.gallery-item {
  cursor: pointer;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid transparent;
  transition: all var(--transition-standard);
}

.gallery-item:hover {
  border-color: var(--color-neptune-glow);
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* Sidebar Nav */
.sidebar-nav {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 1rem;
}

.sidebar-nav-heading {
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  padding: 0.5rem 1rem;
  margin-bottom: 0.25rem;
}

.sidebar-nav a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  transition: all var(--transition-standard);
}

.sidebar-nav a:hover {
  color: var(--color-text-primary);
  background: rgba(126, 184, 255, 0.1);
}

.sidebar-nav a[aria-current="page"] {
  color: var(--color-neptune-glow);
  background: rgba(126, 184, 255, 0.1);
}

/* Two-column layout */
.layout-sidebar {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 768px) {
  .layout-sidebar {
    grid-template-columns: 1fr;
  }
}