/* ===== RESET & TOKENS ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface-2: #1a1a1a;
  --border: #1e1e1e;
  --border-hover: #333333;
  --text: #e5e5e5;
  --text-dim: #555555;
  --accent: #ffffff;
  --success: #4ade80;
  --dot-off: #1a1a1a;
  --dot-hover: #2a2a2a;
  --dot-on: #e5e5e5;
  --ghost: #2d2520;
  --mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'JetBrains Mono', monospace;
  --sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
}

body {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  height: 100vh;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* ===== SCROLLBARS ===== */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-hover) transparent;
}
::-webkit-scrollbar { width: 3px; height: 3px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 2px; }

/* ===== FOCUS ===== */
*:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 1px;
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* ===== WORKSPACE ===== */
.workspace-body {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ===== CANVAS AREA ===== */
.canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 16px 16px 56px;
  min-width: 0;
}

.grid-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.dot-grid-container {
  display: inline-flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px;
  background: var(--surface);
}

.dot-grid {
  display: flex;
  flex-direction: column;
}

.grid-row {
  display: flex;
}

.dot-grid {
  touch-action: none;
}

.dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--dot-off);
  margin: 2px;
  cursor: pointer;
  transition: background 0.08s ease, transform 0.08s ease, box-shadow 0.08s ease;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
  flex-shrink: 0;
}

.dot:hover {
  background: var(--dot-hover);
  transform: scale(1.1);
}

.dot.on {
  background: var(--dot-on);
  box-shadow: 0 0 6px rgba(255,255,255,0.12);
}

.dot.ghost {
  background: var(--ghost);
  box-shadow: 0 0 4px rgba(180,120,60,0.1);
}

.dot.cell-right {
  margin-right: 10px;
}

.dot.cell-bottom {
  margin-bottom: 10px;
}

/* ===== FLOATING TOOLBAR ===== */
.floating-toolbar {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  white-space: nowrap;
}

.toolbar-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.toolbar-x {
  font-size: 10px;
  color: var(--text-dim);
}

.sep {
  width: 1px;
  height: 16px;
  background: var(--border);
  flex-shrink: 0;
}

/* ===== BUTTONS ===== */
button {
  font-family: var(--mono);
  cursor: pointer;
}

.tool-btn {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.03em;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 10px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.tool-btn:hover {
  border-color: var(--border-hover);
  background: #222;
}

.tool-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.nav-btn {
  padding: 4px 6px;
}

/* ===== MODE TOGGLE ===== */
.mode-toggle {
  display: flex;
  gap: 1px;
  border-radius: 4px;
  background: var(--surface-2);
  padding: 2px;
}

.mode-btn {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.03em;
  background: transparent;
  color: var(--text);
  border: none;
  border-radius: 3px;
  padding: 4px 12px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.mode-btn:hover {
  background: var(--surface);
}

.mode-btn.active {
  background: var(--accent);
  color: var(--bg);
  font-weight: 500;
}

/* ===== SELECTS ===== */
select {
  font-family: var(--mono);
  font-size: 10px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 20px 4px 8px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='6' height='4'%3E%3Cpath d='M0 0l3 4 3-4z' fill='%23555'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 5px center;
}

select:hover {
  border-color: var(--border-hover);
}

/* ===== OUTPUT SIDEBAR ===== */
.output-sidebar {
  width: 280px;
  flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}

.output-section {
  flex-shrink: 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

.section-header span {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.section-header-right {
  display: flex;
  align-items: center;
  gap: 6px;
}

.copy-btn {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-dim);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color 0.15s ease;
}

.copy-btn:hover {
  color: var(--text);
}

.copy-btn.copied {
  color: var(--success);
}

.output-content {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text);
  padding: 8px 10px;
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.3;
  max-height: 100px;
  overflow-y: auto;
  background: transparent;
}

.braille-output {
  font-size: 18px;
  line-height: 1.2;
  color: var(--accent);
}

/* ===== SHORTCUTS ===== */
.shortcuts-grid {
  display: flex;
  gap: 12px;
  padding: 8px 10px;
}

.shortcut-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.shortcut-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.shortcut-col:last-child kbd {
  min-width: 40px;
}

kbd {
  font-family: var(--mono);
  font-size: 8px;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 4px;
  min-width: 22px;
  text-align: center;
  display: inline-block;
  line-height: 1.5;
}

.shortcut-row span {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-dim);
  white-space: nowrap;
}

/* ===== TIPS ===== */
.tips-content {
  font-family: var(--sans);
  font-size: 10px;
  color: var(--text-dim);
  line-height: 1.4;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tip strong {
  color: var(--text);
  font-weight: 600;
}

/* ===== SIDEBAR FOOTER ===== */
.sidebar-footer {
  flex-shrink: 0;
  padding: 10px 12px;
  border-top: 1px solid var(--border);
}

.brand-name {
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 3px;
}

.brand-tagline {
  font-family: var(--sans);
  font-size: 9px;
  color: var(--text-dim);
  line-height: 1.4;
}

/* ===== TIMELINE DOCK ===== */
.timeline-dock {
  background: var(--surface);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.transport-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  overflow-x: auto;
  scrollbar-width: none;
}

.transport-bar::-webkit-scrollbar { display: none; }

.transport-btn {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.03em;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.transport-btn:hover {
  border-color: var(--border-hover);
  background: #222;
}

.play-btn {
  padding: 4px 12px;
}

.toggle-btn {
  padding: 4px 10px;
}

.toggle-btn.active {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.spacer {
  flex: 1;
}

.frame-counter {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
}

.fps-label {
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.fps-value {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text);
  min-width: 14px;
}

input[type="range"] {
  width: 52px;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  -webkit-appearance: none;
  border: none;
}

input[type="range"]::-moz-range-thumb {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
}

/* ===== FRAME STRIP ===== */
.frame-strip-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px 5px;
}

.frame-strip {
  flex: 1;
  min-width: 0;
  display: flex;
  gap: 5px;
  overflow-x: auto;
  padding: 4px 0;
}

.frame-thumb {
  min-width: 40px;
  max-width: 80px;
  padding: 4px 6px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: border-color 0.15s ease;
  user-select: none;
}

.frame-thumb:hover {
  border-color: var(--border-hover);
}

.frame-thumb.active {
  border-color: var(--accent);
  border-width: 2px;
  padding: 3px 5px;
}

.frame-thumb.dragging {
  opacity: 0.5;
}

.frame-number {
  font-family: var(--mono);
  font-size: 7px;
  color: var(--text-dim);
  position: absolute;
  top: 2px;
  left: 4px;
}

.frame-preview {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  margin-top: 8px;
  line-height: 1;
}

.frame-add-btn {
  min-width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px dashed var(--border-hover);
  border-radius: 3px;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 14px;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.frame-add-btn:hover {
  border-color: var(--text-dim);
  color: var(--text);
  background: var(--surface-2);
}

.built-with {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-dim);
  letter-spacing: 0.03em;
  white-space: nowrap;
  flex-shrink: 0;
}

.built-with a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.15s ease;
}

.built-with a:hover {
  color: var(--accent);
}

/* ===== MODALS ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

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

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  max-width: 500px;
  width: 90%;
}

.modal-title {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.modal-body {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal-label {
  font-family: var(--sans);
  font-size: 10px;
  color: var(--text-dim);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
}

textarea {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s ease;
}

textarea:focus {
  border-color: var(--border-hover);
}

.import-file-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
}

.file-types {
  font-size: 9px;
  color: var(--text-dim);
}

.import-info {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text-dim);
  min-height: 14px;
}

.import-mode {
  display: flex;
  gap: 16px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text);
}

.import-mode label {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.import-error {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--text);
  min-height: 14px;
}

.import-confirm:not(:disabled) {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

/* ===== COMMAND PALETTE ===== */
.palette-modal {
  max-width: 400px;
  padding: 0;
  overflow: hidden;
}

.palette-modal input[type="text"] {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--surface-2);
  color: var(--text);
  border: none;
  border-bottom: 1px solid var(--border);
  padding: 10px 14px;
  width: 100%;
  outline: none;
}

.palette-list {
  max-height: 300px;
  overflow-y: auto;
}

.palette-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 14px;
  cursor: pointer;
  transition: background 0.08s ease;
}

.palette-item:hover,
.palette-item.selected {
  background: var(--surface-2);
}

.palette-item-label {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text);
}

.palette-item-shortcut {
  font-family: var(--mono);
  font-size: 8px;
  color: var(--text-dim);
}

/* ===== CONFIRM DIALOG ===== */
.confirm-modal {
  max-width: 360px;
}

.confirm-modal .modal-body {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.4;
}

/* ===== TOASTS ===== */
.toast-container {
  position: fixed;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column-reverse;
  gap: 4px;
  z-index: 200;
  pointer-events: none;
}

.toast {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.03em;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 14px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  white-space: nowrap;
  opacity: 1;
  transition: opacity 0.15s ease;
}

.toast.fade-out {
  opacity: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 700px) {
  .workspace-body {
    flex-direction: column;
  }

  .output-sidebar {
    width: 100%;
    max-height: 250px;
    border-left: none;
    border-top: 1px solid var(--border);
  }

  .dot {
    width: 22px;
    height: 22px;
  }

  .dot.cell-right {
    margin-right: 6px;
  }

  .dot.cell-bottom {
    margin-bottom: 6px;
  }

  .canvas-area {
    min-height: 300px;
  }
}