/* ═══════════════════════════════════════
   LatexCraft v4.0 — modals.css
   All modals, overlays, dropdowns, toasts, autocomplete popup
   ═══════════════════════════════════════ */

/* Modal backdrop */
.modal-bg {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(2,2,4,0.65);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  display: grid;
  place-items: center;
  animation: backdropIn 220ms var(--ease-snap);
  padding: 24px;
}
@keyframes backdropIn {
  from { opacity: 0; backdrop-filter: blur(0); -webkit-backdrop-filter: blur(0); }
  to   { opacity: 1; }
}

.modal {
  background: var(--bg-overlay);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-xl);
  box-shadow:
    0 0 0 1px var(--border-ghost),
    0 24px 80px rgba(0,0,0,0.55),
    0 8px 24px rgba(0,0,0,0.40),
    inset 0 1px 0 rgba(255,255,255,0.04);
  max-width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalIn 280ms var(--ease-spring);
}
@keyframes modalIn {
  0%   { opacity: 0; transform: translateY(16px) scale(0.96); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-head {
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}
.modal-title {
  font: 400 24px/1.15 var(--font-display);
  color: var(--text-primary);
  margin: 0 0 4px;
  letter-spacing: -0.02em;
}
.modal-sub {
  font: 400 12px/1.4 var(--font-ui);
  color: var(--text-muted);
}
.modal-close {
  width: 28px; height: 28px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--r-xs);
  display: grid;
  place-items: center;
  transition: all var(--t-fast);
}
.modal-close:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.modal-body {
  padding: 18px 22px;
  overflow-y: auto;
  flex: 1;
}
.modal-foot {
  padding: 14px 22px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
}

/* ─── EXPORT MODAL ─── */
.export-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}
@media (max-width: 720px) { .export-grid { grid-template-columns: repeat(2, 1fr); } }
.export-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  padding: 18px 16px;
  cursor: pointer;
  transition: all 180ms var(--ease-snap);
  position: relative;
  text-align: left;
}
.export-card:hover {
  border-color: var(--border-strong);
  background: var(--bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.export-card.selected {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-dim) 0%, var(--bg-surface) 80%);
  box-shadow: 0 0 0 1px var(--accent), 0 8px 24px var(--accent-glow);
  transform: translateY(-2px);
}
.export-card .icon {
  font-size: 28px;
  line-height: 1;
  margin-bottom: 8px;
  display: block;
}
.export-card .name {
  font: 600 14px/1.2 var(--font-ui);
  color: var(--text-primary);
  margin-bottom: 4px;
}
.export-card .desc {
  font: 400 11px/1.4 var(--font-ui);
  color: var(--text-muted);
}
.export-card .recommended-badge {
  position: absolute;
  top: 8px; right: 8px;
}
.export-card.selected .check {
  position: absolute;
  top: 10px; right: 10px;
  width: 18px; height: 18px;
  background: var(--accent);
  color: var(--accent-text);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 10px;
  font-weight: 800;
}

/* Export checklist */
.checklist {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 12px 14px;
  margin-bottom: 14px;
}
.checklist-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font: 400 12px/1.5 var(--font-ui);
  color: var(--text-secondary);
  padding: 3px 0;
}
.checklist-row .ico {
  width: 14px; flex-shrink: 0; text-align: center;
  font-weight: 700;
  font-family: var(--font-editor);
}
.checklist-row.ok .ico { color: var(--color-success); }
.checklist-row.warn .ico { color: var(--color-warning); }
.checklist-row.error .ico { color: var(--color-error); }
.checklist-row.info .ico { color: var(--color-info); }

.option-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}
.option-row {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 400 13px/1.4 var(--font-ui);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 0;
}
.option-row input[type="checkbox"] {
  width: 16px; height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.export-tip {
  background: var(--accent-dim);
  border: 1px solid rgba(245,158,11,0.3);
  border-radius: var(--r-md);
  padding: 12px 14px;
  font: 400 12px/1.5 var(--font-ui);
  color: var(--text-primary);
  margin-bottom: 14px;
}
.export-tip-label {
  font: 700 10px/1 var(--font-ui);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.image-preview-strip {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.image-preview-thumb {
  width: 60px; height: 60px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-subtle);
  object-fit: cover;
  background: #000;
}

.recent-exports {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}
.recent-export-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font: 400 12px/1.3 var(--font-ui);
  color: var(--text-secondary);
}

/* ─── COMMAND PALETTE ─── */
.cmd-palette {
  background: var(--bg-overlay);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  width: 600px;
  max-width: 100%;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 10vh;
  animation: slideUp 220ms var(--ease-spring);
}
.cmd-input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
}
.cmd-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font: 400 15px/1 var(--font-ui);
}
.cmd-input::placeholder { color: var(--text-muted); }
.cmd-list {
  overflow-y: auto;
  padding: 6px;
  max-height: 50vh;
}
.cmd-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  cursor: pointer;
  font: 400 13px/1.3 var(--font-ui);
  color: var(--text-secondary);
}
.cmd-item:hover, .cmd-item.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.cmd-item.active { background: var(--accent-dim); color: var(--accent); }
.cmd-item-name { flex: 1; }
.cmd-item-shortcut {
  font-family: var(--font-editor);
  font-size: 10px;
  color: var(--text-muted);
}

/* ─── AUTOCOMPLETE POPUP ─── */
.ac-popup {
  position: absolute;
  z-index: 50;
  background: var(--bg-overlay);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  min-width: 280px;
  max-width: 420px;
  max-height: 280px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
}
.ac-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px;
}
.ac-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: var(--r-xs);
  cursor: pointer;
  font: 400 12px/1.3 var(--font-ui);
  color: var(--text-secondary);
}
.ac-item:hover, .ac-item.active {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.ac-item.active { background: var(--accent-dim); color: var(--accent); }
.ac-icon {
  width: 18px; height: 18px;
  border-radius: 4px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: grid;
  place-items: center;
  font: 700 9px/1 var(--font-editor);
  flex-shrink: 0;
  color: var(--text-muted);
}
.ac-icon.cmd  { color: var(--syn-command); border-color: var(--syn-command); }
.ac-icon.env  { color: var(--syn-env); border-color: var(--syn-env); }
.ac-icon.ref  { color: var(--syn-math); border-color: var(--syn-math); }
.ac-icon.cite { color: var(--syn-string); border-color: var(--syn-string); }
.ac-icon.snip { color: var(--accent); border-color: var(--accent); }
.ac-name {
  font-family: var(--font-editor);
  font-weight: 500;
  flex-shrink: 0;
}
.ac-desc {
  color: var(--text-muted);
  font-size: 11px;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ac-foot {
  border-top: 1px solid var(--border-subtle);
  padding: 4px 10px;
  font: 400 9px/1.3 var(--font-editor);
  color: var(--text-muted);
  display: flex;
  gap: 12px;
}

/* ─── TOASTS ─── */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 900;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  background: var(--bg-overlay);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--text-secondary);
  border-radius: var(--r-md);
  padding: 12px 16px;
  font: 400 13px/1.3 var(--font-ui);
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  min-width: 280px;
  max-width: 480px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: slideUp 200ms var(--ease-snap);
  pointer-events: auto;
}
.toast.success { border-left-color: var(--color-success); }
.toast.error   { border-left-color: var(--color-error); }
.toast.warn    { border-left-color: var(--color-warning); }
.toast.info    { border-left-color: var(--color-info); }
.toast .toast-icon {
  width: 20px; height: 20px;
  flex-shrink: 0;
  display: grid; place-items: center;
  font-weight: 700;
}
.toast.success .toast-icon { color: var(--color-success); }
.toast.error   .toast-icon { color: var(--color-error); }
.toast.warn    .toast-icon { color: var(--color-warning); }
.toast.info    .toast-icon { color: var(--color-info); }

/* ─── TEMPLATE GRID ─── */
.template-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
@media (max-width: 600px) { .template-grid { grid-template-columns: 1fr; } }
.template-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: var(--r-md);
  padding: 14px;
  cursor: pointer;
  transition: all var(--t-fast);
  text-align: left;
}
.template-card:hover {
  border-color: var(--accent);
  background: var(--bg-hover);
  transform: translateY(-1px);
}
.template-card .icon {
  font-size: 22px;
  margin-bottom: 6px;
}
.template-card .name {
  font: 600 13px/1.2 var(--font-ui);
  color: var(--text-primary);
  margin-bottom: 3px;
}
.template-card .desc {
  font: 400 11px/1.4 var(--font-ui);
  color: var(--text-muted);
}

/* ─── SHORTCUTS LIST ─── */
.kbd-section { margin-bottom: 18px; }
.kbd-section-title {
  font: 700 10px/1 var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.10em;
  color: var(--accent);
  margin-bottom: 10px;
}
.kbd-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 4px 24px;
}
.kbd-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px dashed var(--border-subtle);
  font: 400 12px/1.4 var(--font-ui);
  color: var(--text-secondary);
}

/* ─── SNAPSHOT DIFF VIEW ─── */
.diff-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.diff-stats {
  font: 600 11px/1 var(--font-editor);
  color: var(--text-secondary);
  margin-left: auto;
}
.diff-stats .add { color: var(--color-success); }
.diff-stats .rem { color: var(--color-error); }
.diff-view {
  font: 400 12px/1.65 var(--font-editor);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  max-height: 60vh;
  overflow: auto;
}
.diff-line {
  display: flex;
  padding: 0 12px;
  white-space: pre-wrap;
  word-break: break-word;
}
.diff-line.add { background: rgba(34,197,94,0.10); }
.diff-line.rem { background: rgba(248,113,113,0.10); }
.diff-line.eq  { color: var(--text-muted); }
.diff-mark {
  width: 16px;
  flex-shrink: 0;
  user-select: none;
  font-weight: 700;
  color: var(--text-muted);
}
.diff-line.add .diff-mark { color: var(--color-success); }
.diff-line.rem .diff-mark { color: var(--color-error); }

/* ─── STATS PANEL CONTENT ─── */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 14px;
}
.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 12px;
  transition: border-color var(--t-fast);
}
.stat-card:hover { border-color: var(--accent); }
.stat-num {
  font: 600 22px/1 var(--font-display);
  color: var(--text-primary);
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}
.stat-num small {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 2px;
}
.stat-label {
  font: 500 10px/1 var(--font-ui);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px dashed var(--border-subtle);
  font: 400 12px/1.4 var(--font-ui);
  color: var(--text-secondary);
}
.stat-row b { color: var(--text-primary); font-family: var(--font-editor); font-weight: 600; }

.flesch-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font: 600 10px/1.4 var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.flesch-badge.easy { background: rgba(34,197,94,0.18); color: var(--color-success); }
.flesch-badge.medium { background: rgba(251,146,60,0.18); color: var(--color-warning); }
.flesch-badge.hard { background: rgba(248,113,113,0.18); color: var(--color-error); }

.goal-bar-wrap {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 12px;
  margin-bottom: 12px;
}
.goal-bar {
  height: 8px;
  background: var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
  margin: 6px 0;
}
.goal-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width var(--t-base) var(--ease-snap);
}
.goal-bar-fill.complete { background: var(--color-success); }

/* Confetti (CSS-only celebration) */
.confetti {
  position: fixed;
  pointer-events: none;
  z-index: 999;
  inset: 0;
  overflow: hidden;
}
.confetti span {
  position: absolute;
  top: -10px;
  width: 8px; height: 14px;
  border-radius: 2px;
  animation: confetti-fall 2.5s ease-out forwards;
}

/* ─── SNAPSHOT LIST ─── */
.snapshot-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  margin-bottom: 6px;
  transition: all var(--t-fast);
}
.snapshot-item:hover { border-color: var(--accent); background: var(--bg-hover); }
.snapshot-info { flex: 1; min-width: 0; }
.snapshot-label {
  font: 500 13px/1.3 var(--font-ui);
  color: var(--text-primary);
  margin-bottom: 3px;
}
.snapshot-meta {
  font: 400 10px/1 var(--font-editor);
  color: var(--text-muted);
}
.snapshot-actions { display: flex; gap: 4px; }

/* ─── BIBTEX EDITOR ─── */
.bib-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 12px;
  height: 60vh;
  min-height: 360px;
}
.bib-list {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  overflow-y: auto;
  padding: 4px;
}
.bib-list-item {
  padding: 6px 10px;
  border-radius: var(--r-sm);
  cursor: pointer;
  margin-bottom: 2px;
  transition: background var(--t-fast);
}
.bib-list-item:hover { background: var(--bg-hover); }
.bib-list-item.active {
  background: var(--accent-dim);
  border-left: 2px solid var(--accent);
}
.bib-key {
  font: 600 12px/1.2 var(--font-editor);
  color: var(--accent);
  margin-bottom: 2px;
}
.bib-snippet {
  font: 400 11px/1.4 var(--font-ui);
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bib-form {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 14px;
  overflow-y: auto;
}
.bib-form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}
.bib-form-label {
  font: 500 10px/1 var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.bib-form-label.required::after {
  content: ' *';
  color: var(--accent);
}

/* Restore banner */
.restore-banner {
  position: fixed;
  bottom: 16px; left: 50%;
  transform: translateX(-50%);
  background: var(--bg-overlay);
  border: 1px solid var(--accent);
  border-radius: var(--r-md);
  padding: 10px 16px;
  display: flex;
  gap: 10px;
  align-items: center;
  z-index: 700;
  box-shadow: var(--shadow-md);
  animation: slideUp 200ms var(--ease-spring);
  font: 400 13px/1 var(--font-ui);
  color: var(--text-primary);
}

/* Multi-cursor badge */
.multi-cursor-badge {
  position: fixed;
  bottom: 40px;
  right: 16px;
  background: var(--accent);
  color: var(--accent-text);
  padding: 4px 10px;
  border-radius: var(--r-sm);
  font: 600 11px/1 var(--font-ui);
  z-index: 200;
  box-shadow: var(--shadow-sm);
  animation: fadeIn 150ms;
}

/* Settings panel sections */
.settings-row {
  margin-bottom: 14px;
}
.settings-label {
  font: 500 11px/1 var(--font-ui);
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.settings-toggle-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  margin-bottom: 8px;
}
.settings-toggle-row .lab {
  font: 400 13px/1.3 var(--font-ui);
  color: var(--text-primary);
}

.theme-swatches {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}