/* ==========================================================================
   src/styles/components.css
   Theme Surfaces, Buttons, Micro-Interactions, Modals, Popovers, Toasts,
   Unified Book/Chapter Selector Controls, and Custom Dropdown System
   ========================================================================== */

.surface-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  transition: background-color var(--motion-normal) var(--ease-in-out-soft),
              border-color var(--motion-normal) var(--ease-in-out-soft),
              box-shadow var(--motion-normal) var(--ease-standard),
              transform var(--motion-micro) var(--ease-standard);
}
.surface-secondary {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: background-color var(--motion-normal) var(--ease-in-out-soft),
              border-color var(--motion-normal) var(--ease-in-out-soft);
}
.surface-elevated {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  transition: background-color var(--motion-normal) var(--ease-in-out-soft),
              border-color var(--motion-normal) var(--ease-in-out-soft);
}

/* Button Micro-Interactions (Hover on Pointer Devices, Subtle Press on Active/Touch) */
button,
select,
input[type="search"],
input[type="number"],
textarea {
  transition: background-color var(--motion-micro) var(--ease-standard),
              border-color var(--motion-micro) var(--ease-standard),
              color var(--motion-micro) var(--ease-standard),
              box-shadow var(--motion-micro) var(--ease-standard),
              transform var(--motion-micro) var(--ease-standard),
              opacity var(--motion-micro) var(--ease-standard);
}

.btn-primary {
  background-color: var(--accent);
  color: #FFFFFF;
}
[data-theme="dark"] .btn-primary {
  color: #121316;
  font-weight: 600;
}

.btn-subtle {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

@media (hover: hover) and (pointer: fine) {
  .btn-primary:hover:not(:disabled) {
    background-color: var(--accent-hover);
    box-shadow: 0 3px 10px -2px rgba(0, 0, 0, 0.14);
  }
  .btn-subtle:hover:not(:disabled) {
    background-color: var(--bg-hover);
    border-color: var(--border-strong);
  }
  select:hover:not(:disabled) {
    border-color: var(--border-strong);
  }
}

button:active:not(:disabled) {
  transform: scale(0.975);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.text-accent-color {
  color: var(--accent);
}
.border-theme {
  border-color: var(--border-color);
}

/* ==========================================================================
   Modal, Popover, Action Bar, and Toast Coordinated Open/Close Animations
   ========================================================================== */

/* Modals (#modal-note, #modal-import) */
#modal-note,
#modal-import {
  position: fixed;
  inset: 0;
  z-index: 50;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex !important;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  backdrop-filter: blur(2px);
  transition: opacity var(--motion-modal) var(--ease-out-smooth),
              visibility var(--motion-modal) var(--ease-out-smooth);
}

#modal-note.hidden,
#modal-import.hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
}

#modal-note > div,
#modal-import > div {
  transform: translateY(0) scale(1);
  opacity: 1;
  transition: transform var(--motion-modal) var(--ease-out-smooth),
              opacity var(--motion-modal) var(--ease-out-smooth);
}

#modal-note.hidden > div,
#modal-import.hidden > div {
  transform: translateY(10px) scale(0.97);
  opacity: 0;
}

/* Quick Reading Customization Popover (#quick-typo-popover) */
#quick-typo-popover {
  display: block !important;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
  transform-origin: top left;
  transition: opacity var(--motion-normal) var(--ease-out-smooth),
              transform var(--motion-normal) var(--ease-out-smooth),
              visibility var(--motion-normal) var(--ease-out-smooth);
}

#quick-typo-popover.hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transform: translateY(-6px) scale(0.97);
}

#btn-quick-a11y[aria-expanded="true"] .chevron-indicator {
  transform: rotate(180deg);
}

/* Floating Verse Selection Action Bar (#verse-action-bar) */
#verse-action-bar {
  display: block !important;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(50%, 0) scale(1);
  transition: opacity var(--motion-normal) var(--ease-out-smooth),
              transform var(--motion-normal) var(--ease-out-smooth),
              visibility var(--motion-normal) var(--ease-out-smooth);
}

#verse-action-bar.hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transform: translate(50%, 12px) scale(0.98);
}

/* Non-blocking Toast Notification (#app-toast) */
#app-toast {
  display: block !important;
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
  transition: opacity var(--motion-normal) var(--ease-out-smooth),
              transform var(--motion-normal) var(--ease-out-smooth),
              visibility var(--motion-normal) var(--ease-out-smooth);
}

#app-toast.hidden {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transform: translateY(10px) scale(0.97);
}

/* ==========================================================================
   Exact Outer Height Synchronization between Book Selector (#home-select-book),
   Chapter Selector (#home-select-chapter), and 'Open Chapter for Reading' Button
   ========================================================================== */
.home-quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 0.75rem;
  align-items: end;
}
@media (min-width: 640px) {
  .home-quick-nav-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.home-quick-select,
.home-quick-action-btn {
  height: 2.75rem; /* Exact 44px outer height on both selects and button */
  min-height: 2.75rem;
  max-height: 2.75rem;
  box-sizing: border-box;
  padding-top: 0;
  padding-bottom: 0;
  padding-inline-start: 0.875rem;
  padding-inline-end: 0.875rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  line-height: 1.25;
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  margin: 0;
}

select.home-quick-select:not(.sr-only-select) {
  display: block;
  width: 100%;
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  padding-inline-end: 2rem;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

button.home-quick-action-btn {
  width: 100%;
  justify-content: center;
  border: 1px solid transparent;
  font-weight: 600;
}

/* Uniform Horizontal Filter & Control Bar above Reader (#reader-subtoolbar) */
.reader-toolbar-row {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
}
.reader-filter-group,
.reader-actions-group {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.5rem;
}
.reader-filter-group {
  flex: 1 1 auto;
  min-width: 0;
}
.reader-actions-group {
  flex: 0 0 auto;
}
.reader-uniform-control {
  height: 2.375rem; /* Exact 38px outer height across reader selects and buttons */
  min-height: 2.375rem;
  max-height: 2.375rem;
  box-sizing: border-box;
  padding-top: 0;
  padding-bottom: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.625rem;
  font-size: 0.8125rem;
  line-height: 1;
  white-space: nowrap;
  flex-shrink: 0;
  vertical-align: middle;
}
select.reader-uniform-control:not(.sr-only-select) {
  display: block;
  padding-inline-start: 0.75rem;
  padding-inline-end: 1.75rem;
  text-overflow: ellipsis;
  overflow: hidden;
}

/* ==========================================================================
   Unified Custom Dropdown Component (Design System Level)
   Inspired by the reference dropdown design while strictly preserving the
   application's Light, Dark, Sepia, and High-Contrast visual identity.
   ========================================================================== */

/* Visually hide enhanced <select> while keeping it accessible to scripts */
.sr-only-select,
.custom-dropdown > select {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  position: absolute !important;
  width: 0 !important;
  height: 0 !important;
  padding: 0 !important;
  margin: 0 !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
  pointer-events: none !important;
}

.custom-dropdown {
  position: relative;
  display: block;
  font-family: var(--ui-font);
}

.custom-dropdown.is-open {
  z-index: 45;
}

/* Reader Sub-toolbar specific inline sizing */
.custom-dropdown--reader-book {
  width: 210px;
  max-width: 240px;
  flex: 0 1 225px;
  min-width: 145px;
}

.custom-dropdown--reader-chapter {
  width: 138px;
  max-width: 155px;
  flex: 0 1 145px;
  min-width: 112px;
}

.custom-dropdown--compact {
  display: inline-block;
  width: auto;
  min-width: 185px;
}

/* Trigger Button Base */
.custom-dropdown-trigger {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-inline-start: 0.875rem;
  padding-inline-end: 0.75rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  font-family: var(--ui-font);
  font-weight: 600;
  text-align: start;
  cursor: pointer;
  user-select: none;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  transition: background-color var(--motion-micro) var(--ease-standard),
              border-color var(--motion-micro) var(--ease-standard),
              box-shadow var(--motion-micro) var(--ease-standard),
              transform var(--motion-micro) var(--ease-standard);
}

/* Variant Sizing matching original application controls */
.custom-dropdown-trigger.home-quick-select {
  height: 2.75rem; /* 44px */
  min-height: 2.75rem;
  max-height: 2.75rem;
  font-size: 0.875rem;
  border-radius: 0.75rem;
  padding-inline-start: 0.875rem;
  padding-inline-end: 0.75rem;
}

.custom-dropdown-trigger.reader-uniform-control {
  height: 2.375rem; /* 38px */
  min-height: 2.375rem;
  max-height: 2.375rem;
  font-size: 0.8125rem;
  border-radius: 0.625rem;
  padding-inline-start: 0.75rem;
  padding-inline-end: 0.625rem;
  justify-content: space-between;
}

.custom-dropdown-trigger--settings {
  min-height: 2.625rem; /* 42px */
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.custom-dropdown-trigger--field {
  min-height: 2.375rem; /* 38px */
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
  font-size: 0.75rem;
  font-weight: 500;
}

.custom-dropdown-trigger--compact {
  min-height: 2.125rem; /* 34px */
  padding-top: 0.35rem;
  padding-bottom: 0.35rem;
  padding-inline-start: 0.75rem;
  padding-inline-end: 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 0.5rem;
}

@media (hover: hover) and (pointer: fine) {
  .custom-dropdown-trigger:hover:not(:disabled) {
    background-color: var(--bg-hover);
    border-color: var(--border-strong);
  }
}

.custom-dropdown.is-open .custom-dropdown-trigger,
.custom-dropdown-trigger:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
  outline: none;
}

/* Trigger Inner Content & Status Dot */
.custom-dropdown-trigger-content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
}

.custom-dropdown-selected-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.35;
}

.custom-dropdown-selected-meta {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .custom-dropdown--reader-book .custom-dropdown-selected-meta {
    display: none;
  }
}

.custom-dropdown-status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 9999px;
  flex-shrink: 0;
}

.custom-dropdown-status-dot--accent {
  background-color: var(--accent);
}

.custom-dropdown-status-dot--muted {
  background-color: var(--border-strong);
}

/* Balanced Chevron Icon with Consistent Inline Clearance */
.custom-dropdown-chevron {
  width: 1rem;
  height: 1rem;
  color: var(--text-muted);
  flex-shrink: 0;
  margin-inline-start: 0.25rem;
  transition: transform var(--motion-normal) var(--ease-out-smooth),
              color var(--motion-micro) var(--ease-standard);
}

.custom-dropdown.is-open .custom-dropdown-chevron {
  color: var(--accent);
}

.custom-dropdown-chevron.rotate-180 {
  transform: rotate(180deg);
}

/* Dropdown Menu Panel */
@keyframes customDropdownIn {
  0% {
    opacity: 0;
    transform: translateY(-6px) scale(0.97);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes customDropdownInUp {
  0% {
    opacity: 0;
    transform: translateY(6px) scale(0.97);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.custom-dropdown-menu {
  position: absolute;
  inset-inline-start: 0;
  inset-inline-end: 0;
  top: calc(100% + 0.4rem);
  min-width: 100%;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: 0.875rem;
  box-shadow: 0 14px 32px -6px rgba(0, 0, 0, 0.18), 0 4px 12px -2px rgba(0, 0, 0, 0.08);
  z-index: 60;
  overflow: hidden;
  transform-origin: top center;
  animation: customDropdownIn var(--motion-normal) var(--ease-out-smooth) forwards;
}

[data-theme="dark"] .custom-dropdown-menu {
  box-shadow: 0 16px 36px -6px rgba(0, 0, 0, 0.55), 0 4px 14px -2px rgba(0, 0, 0, 0.35);
}

/* Ensure comfortable width for reader subtoolbar dropdown panels */
.custom-dropdown--reader-book .custom-dropdown-menu {
  min-width: min(300px, calc(100vw - 2rem));
}

.custom-dropdown--reader-chapter .custom-dropdown-menu {
  min-width: min(210px, calc(100vw - 2rem));
}

.custom-dropdown--compact .custom-dropdown-menu {
  min-width: 220px;
}

/* Flip upward when near bottom of viewport */
.custom-dropdown-menu.custom-dropdown-menu--up {
  top: auto;
  bottom: calc(100% + 0.4rem);
  transform-origin: bottom center;
  animation: customDropdownInUp var(--motion-normal) var(--ease-out-smooth) forwards;
}

/* Search Box Header inside Dropdown Menu */
.custom-dropdown-search-wrap {
  padding: 0.55rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
}

.custom-dropdown-search-inner {
  position: relative;
  display: flex;
  align-items: center;
}

.custom-dropdown-search-icon {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--text-muted);
  position: absolute;
  inset-inline-start: 0.7rem;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}

.custom-dropdown-search-input {
  width: 100%;
  padding-inline-start: 2.15rem;
  padding-inline-end: 0.75rem;
  padding-top: 0.42rem;
  padding-bottom: 0.42rem;
  font-size: 0.78rem;
  font-family: var(--ui-font);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.625rem;
  transition: border-color var(--motion-micro) var(--ease-standard),
              box-shadow var(--motion-micro) var(--ease-standard);
}

.custom-dropdown-search-input::placeholder {
  color: var(--text-muted);
}

.custom-dropdown-search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

/* Scrollable Options List */
.custom-dropdown-list {
  max-height: 16rem; /* 256px */
  overflow-y: auto;
  padding: 0.375rem;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.custom-scrollbar::-webkit-scrollbar {
  width: 5px;
}
.custom-scrollbar::-webkit-scrollbar-track {
  background: transparent;
}
.custom-scrollbar::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 9999px;
}

/* Optgroup Header inside Custom Dropdown */
.custom-dropdown-group {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.custom-dropdown-group + .custom-dropdown-group {
  margin-top: 0.25rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--border-color);
}

.custom-dropdown-group-header {
  padding: 0.35rem 0.65rem 0.2rem;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  user-select: none;
}

/* Individual Option Item */
.custom-dropdown-option {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.5rem 0.65rem;
  border-radius: 0.625rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: transparent;
  border: 1px solid transparent;
  text-align: start;
  cursor: pointer;
  transition: background-color var(--motion-micro) var(--ease-standard),
              color var(--motion-micro) var(--ease-standard);
}

@media (hover: hover) and (pointer: fine) {
  .custom-dropdown-option:hover:not(:disabled) {
    background-color: var(--bg-hover);
  }
}

.custom-dropdown-option.is-focused {
  background-color: var(--bg-hover);
  border-color: var(--border-strong);
}

.custom-dropdown-option.is-selected {
  background-color: var(--accent-soft);
  color: var(--accent);
  font-weight: 700;
}

[data-theme="dark"] .custom-dropdown-option.is-selected {
  color: var(--accent);
}

.custom-dropdown-option-main {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  min-width: 0;
  flex: 1 1 auto;
}

.custom-dropdown-option-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 9999px;
  flex-shrink: 0;
}

.custom-dropdown-option-label {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.custom-dropdown-option-sublabel {
  font-size: 0.68rem;
  font-weight: 400;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.custom-dropdown-option-end {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
}

.custom-dropdown-option-badge {
  font-size: 0.66rem;
  font-weight: 600;
  padding: 0.1rem 0.4rem;
  border-radius: 0.375rem;
  background-color: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
}

.custom-dropdown-option.is-selected .custom-dropdown-option-badge {
  background-color: var(--bg-surface);
  color: var(--accent);
  border-color: var(--accent);
}

.custom-dropdown-check {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--accent);
  flex-shrink: 0;
}

/* Empty State inside Dropdown */
.custom-dropdown-empty {
  padding: 1.5rem 0.75rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}