/**
 * File Modals Styles
 * PDF page range selector and ePub chapter selector modals
 * Also includes the processing overlay spinner
 */

/* ─────────────────────────────────────────────────────────────
   Processing Overlay
   ───────────────────────────────────────────────────────────── */

.processing-overlay {
  position: fixed;
  inset: 0;
  z-index: 400;
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
  background: rgba(0, 0, 0, 0.75);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

.processing-overlay.active {
  display: flex;
}

.processing-spinner {
  width: 56px;
  height: 56px;
  border: 4px solid var(--control-border, rgba(255, 255, 255, 0.1));
  border-top-color: var(--orp-color, #3083ff);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.processing-text {
  margin: 0;
  font-size: 1.125rem;
  color: var(--text, #ffffff);
  opacity: 0.9;
}

/* ─────────────────────────────────────────────────────────────
   Modal Base
   ───────────────────────────────────────────────────────────── */

.file-modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

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

.file-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.file-modal-content {
  position: relative;
  width: 100%;
  max-width: 420px;
  max-height: 75vh;
  background: var(--control-bg, rgba(30, 30, 30, 0.95));
  border: 1px solid var(--control-border, rgba(255, 255, 255, 0.1));
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

/* ─────────────────────────────────────────────────────────────
   Modal Header
   ───────────────────────────────────────────────────────────── */

.file-modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--control-border, rgba(255, 255, 255, 0.1));
}

.file-modal-header h3 {
  margin: 0 0 4px;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text, #ffffff);
  word-break: break-word;
}

.file-modal-meta {
  font-size: 0.875rem;
  color: var(--text, #ffffff);
  opacity: 0.6;
}

/* ─────────────────────────────────────────────────────────────
   Modal Body
   ───────────────────────────────────────────────────────────── */

.file-modal-body {
  padding: 20px 24px;
  flex: 1;
  overflow-y: auto;
}

.file-modal-label {
  display: block;
  margin-bottom: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text, #ffffff);
  opacity: 0.8;
}

/* PDF Page Range Inputs */
.page-range-inputs {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-range-inputs input[type="number"] {
  width: 80px;
  padding: 10px 12px;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text, #ffffff);
  background: var(--control-hover);
  border: 1px solid var(--control-border, rgba(255, 255, 255, 0.15));
  border-radius: 8px;
  text-align: center;
  appearance: textfield;
  -moz-appearance: textfield;
}

.page-range-inputs input[type="number"]::-webkit-outer-spin-button,
.page-range-inputs input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.page-range-inputs input[type="number"]:focus {
  outline: none;
  border-color: var(--orp-color, #d63944);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

.page-range-inputs span {
  color: var(--text, #ffffff);
  opacity: 0.6;
}

/* ePub Chapter List */
.chapter-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 300px;
  overflow-y: auto;
  margin: -4px;
  padding: 4px;
}

.chapter-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.chapter-item:hover {
  background: var(--control-hover);
}

.chapter-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--orp-color, #3083ff);
}

.chapter-item label {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--text, #ffffff);
  cursor: pointer;
  line-height: 1.4;
}

/* Chapter Actions (Select All / Clear) */
.file-modal-actions {
  display: flex;
  gap: 8px;
  padding: 0 24px 16px;
}

/* ─────────────────────────────────────────────────────────────
   Modal Footer
   ───────────────────────────────────────────────────────────── */

.file-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 16px 24px;
  border-top: 1px solid var(--control-border, rgba(255, 255, 255, 0.1));
}

/* Button Styles */
.btn-primary,
.btn-secondary,
.btn-text {
  padding: 10px 20px;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: inherit;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  color: #ffffff;
  background: var(--orp-color);
  border: none;
}

.btn-primary:hover {
  filter: brightness(1.15);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  color: var(--text, #ffffff);
  background: transparent;
  border: 1px solid var(--control-border, rgba(255, 255, 255, 0.2));
}

.btn-secondary:hover {
  background: var(--control-hover);
}

.btn-text {
  padding: 8px 12px;
  color: var(--orp-color, #3083ff);
  background: transparent;
  border: none;
  font-size: 0.8125rem;
}

.btn-text:hover {
  background: var(--accent-glow);
}

/* ─────────────────────────────────────────────────────────────
   Responsive
   ───────────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .file-modal {
    padding: 16px;
  }
  
  .file-modal-content {
    max-height: 85vh;
  }
  
  .file-modal-header,
  .file-modal-body,
  .file-modal-footer {
    padding-left: 16px;
    padding-right: 16px;
  }
  
  .file-modal-actions {
    padding-left: 16px;
    padding-right: 16px;
  }
}