/* ============================================================================
   Data Manager — Modal, Toast, Dropzone, Stats
   Respects theme via CSS custom properties defined in theme.css
   ============================================================================ */

/* Prevent body scroll when modal open */
body.dm-modal-open {
  overflow: hidden;
}

/* ============================================================================
   Nav Button
   ============================================================================ */

.dm-nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  padding: 6px;
  margin-left: 8px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.dm-nav-btn:hover,
.dm-nav-btn:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}

/* ============================================================================
   Modal Overlay
   ============================================================================ */

.dm-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 1rem;
  overflow-y: auto;
}

.dm-overlay[hidden] {
  display: none;
}

.dm-modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: dm-slideIn 0.2s ease-out;
}

@keyframes dm-slideIn {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

.dm-modal__header h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
}

.dm-modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.dm-modal__close:hover,
.dm-modal__close:focus-visible {
  color: var(--text);
  background: var(--accent-soft);
  outline: none;
}

.dm-modal__body {
  padding: 1.5rem;
}

/* ============================================================================
   Sections
   ============================================================================ */

.dm-section {
  margin-bottom: 2rem;
}

.dm-section:last-child {
  margin-bottom: 0;
}

.dm-section h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
}

.dm-section--danger h3 {
  color: var(--status-error-text);
}

.dm-desc {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ============================================================================
   Stats Grid
   ============================================================================ */

.dm-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
}

.dm-stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
  text-align: center;
}

.dm-stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  font-family: 'Space Grotesk', sans-serif;
}

.dm-stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 2px;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.dm-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.dm-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  font-family: 'Space Grotesk', sans-serif;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.dm-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.dm-btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.dm-btn--primary:hover:not(:disabled) {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.dm-btn--outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.dm-btn--outline:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.dm-btn--ghost {
  background: transparent;
  color: var(--muted);
  border-color: transparent;
}

.dm-btn--ghost:hover:not(:disabled) {
  color: var(--text);
}

.dm-btn--danger {
  background: var(--status-error);
  color: #fff;
  border-color: var(--status-error);
}

.dm-btn--danger:hover:not(:disabled) {
  background: var(--status-error-text);
  border-color: var(--status-error-text);
}

.dm-btn--reload {
  margin-top: 1rem;
  width: 100%;
  justify-content: center;
}

.dm-last-export {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ============================================================================
   Drop Zone
   ============================================================================ */

.dm-dropzone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  color: var(--muted);
}

.dm-dropzone:hover,
.dm-dropzone--active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.dm-dropzone svg {
  margin-bottom: 0.5rem;
  opacity: 0.6;
}

.dm-dropzone p {
  margin: 0;
  font-size: 0.875rem;
}

/* ============================================================================
   Import Preview
   ============================================================================ */

.dm-import-preview {
  margin-top: 1rem;
}

.dm-import-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
}

.dm-import-card h4 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
}

.dm-import-date {
  font-size: 0.8rem;
  color: var(--muted);
  margin: 0 0 0.75rem;
}

.dm-import-stats {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.dm-import-stats span {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
}

.dm-import-options {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.dm-import-error {
  background: var(--status-error-soft);
  border: 1px solid var(--status-error-soft);
  color: var(--status-error-text);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-size: 0.875rem;
}

/* ============================================================================
   Progress Bar (Import)
   ============================================================================ */

.dm-import-progress {
  margin-top: 1rem;
}

.dm-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.dm-progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  width: 0;
  transition: width 0.3s ease;
}

.dm-progress-text {
  margin: 0.5rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ============================================================================
   Reset Section
   ============================================================================ */

.dm-reset-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.dm-confirm {
  margin-top: 1rem;
}

.dm-confirm-card {
  background: var(--status-error-soft);
  border: 1px solid var(--status-error-soft);
  border-radius: 10px;
  padding: 1rem;
}

.dm-confirm-card p {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--text);
}

.dm-confirm-detail {
  color: var(--muted) !important;
}

.dm-confirm-warning {
  color: var(--status-error-text) !important;
  font-weight: 500;
}

.dm-confirm-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

/* ============================================================================
   Auto-Backup Toast
   ============================================================================ */

.dm-toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 10001;
  max-width: 420px;
  width: calc(100% - 3rem);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.dm-toast--visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.dm-toast__inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.875rem 1rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.dm-toast__icon {
  flex-shrink: 0;
  color: var(--accent);
  display: flex;
}

.dm-toast__text {
  flex: 1;
  font-size: 0.8rem;
  color: var(--text);
  line-height: 1.4;
}

.dm-toast__btn {
  flex-shrink: 0;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: 'Space Grotesk', sans-serif;
  transition: background 0.15s;
}

.dm-toast__btn--export {
  background: var(--accent);
  color: #fff;
  padding: 6px 12px;
}

.dm-toast__btn--export:hover {
  background: var(--accent-strong);
}

.dm-toast__btn--dismiss {
  background: transparent;
  color: var(--muted);
  padding: 4px;
  display: flex;
  align-items: center;
}

.dm-toast__btn--dismiss:hover {
  color: var(--text);
}

/* ============================================================================
   Settings Page Specific Styles
   ============================================================================ */

.settings-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

.settings-page h1 {
  font-family: 'Fraunces', serif;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0 0 0.5rem;
  color: var(--text);
}

.settings-page > p {
  color: var(--muted);
  margin: 0 0 2rem;
  font-size: 0.95rem;
}

.settings-section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.settings-section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
}

.settings-section p {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0 0 1rem;
  line-height: 1.5;
}

.settings-stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.settings-stat {
  background: var(--card-inner);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
}

.settings-stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  font-family: 'Space Grotesk', sans-serif;
}

.settings-stat-label {
  display: block;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 2px;
}

.settings-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.settings-section--danger {
  border-color: var(--status-error-soft);
}

.settings-section--danger h2 {
  color: var(--status-error-text);
}

.settings-about {
  font-size: 0.8rem !important;
  color: var(--muted) !important;
  line-height: 1.6 !important;
}

.settings-theme-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.settings-theme-row label {
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 500;
}

.settings-theme-row select {
  background: var(--card-inner);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.875rem;
  cursor: pointer;
}

/* ============================================================================
   Responsive
   ============================================================================ */

/* ── Reduced motion ─────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .dm-modal,
  .dm-nav-btn,
  .dm-modal__close,
  .dm-btn,
  .dm-dropzone,
  .dm-progress-fill,
  .dm-toast,
  .dm-toast__btn {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 520px) {
  .dm-modal {
    border-radius: 12px;
    max-height: 95vh;
  }

  .dm-modal__body {
    padding: 1rem;
  }

  .dm-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .dm-import-options {
    flex-direction: column;
  }

  .dm-import-options .dm-btn {
    width: 100%;
    justify-content: center;
  }

  .dm-reset-grid {
    flex-direction: column;
  }

  .dm-reset-grid .dm-btn {
    width: 100%;
    justify-content: center;
  }

  .dm-toast {
    bottom: 1rem;
    right: 1rem;
    width: calc(100% - 2rem);
  }

  .dm-toast__inner {
    flex-wrap: wrap;
  }

  .dm-toast__text {
    flex-basis: calc(100% - 40px);
  }

  .settings-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}