/* ═══════════════════════════════════════
   WordArt Studio - Stylesheet
   ═══════════════════════════════════════ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-dark: #0a0a14;
  --bg-card: #131322;
  --bg-input: #1a1a2e;
  --border: #2a2a44;
  --accent: #8ab4f8;
  --accent-hover: #aecbf9;
  --accent-bg: rgba(138,180,248,0.12);
  --accent-glow: rgba(138,180,248,0.25);
  --text: #e0e0e0;
  --text-dim: #777;
  --danger: #ef5350;
  --radius: 8px;

  /* Spacing scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
}

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-dark);
  color: var(--text);
  overflow: hidden;
  height: 100vh;
}

/* ── Focus Ring ── */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-dim);
}

/* ═══════════════════════════════════════
   HEADER
   ═══════════════════════════════════════ */
#appHeader {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  padding: 0 var(--space-lg);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: relative;
}
/* Subtle accent underline */
#appHeader::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  opacity: 0.35;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.8px;
}
.logo svg { flex-shrink: 0; }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.icon-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  color: var(--text-dim);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.icon-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-bg);
}
.icon-btn:active {
  transform: scale(0.95);
}

.primary-btn, .secondary-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.primary-btn {
  background: linear-gradient(135deg, var(--accent), #6a9cf8);
  color: #0a0a14;
  box-shadow: 0 2px 8px var(--accent-glow);
}
.primary-btn:hover {
  box-shadow: 0 4px 16px var(--accent-glow);
  transform: translateY(-1px);
}
.primary-btn:active {
  transform: translateY(0);
}
.secondary-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.secondary-btn:hover {
  border-color: var(--accent);
  background: var(--accent-bg);
}
.secondary-btn:active {
  transform: scale(0.97);
}
.full-width {
  width: 100%;
  padding: 10px;
  font-size: 14px;
  margin-top: var(--space-md);
}

/* ═══════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════ */
#appBody {
  display: flex;
  height: calc(100vh - 52px);
}

/* ═══════════════════════════════════════
   LEFT PANEL
   ═══════════════════════════════════════ */
#leftPanel {
  width: 300px;
  min-width: 280px;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

/* ── Tabs ── */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  padding: 0 var(--space-sm);
}

.tab {
  flex: 1;
  padding: var(--space-md) 0;
  border: none;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
}
.tab:hover {
  color: var(--text);
  background: rgba(255,255,255,0.03);
}
.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 20%; right: 20%;
  height: 1px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* ── Panel Body ── */
.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: none;
}
.panel-body.panel-active {
  display: block;
  animation: panelFadeIn 0.2s ease;
}
@keyframes panelFadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Section Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-lg) 0;
}

/* ═══════════════════════════════════════
   FORM FIELDS
   ═══════════════════════════════════════ */
.field {
  margin-bottom: var(--space-lg);
}

.field label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin-bottom: var(--space-sm);
}

/* ── Textarea ── */
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* ── Select ── */
select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* ── Range Slider ── */
input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
  margin-top: var(--space-sm);
  cursor: pointer;
  transition: background 0.2s ease;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-card);
  box-shadow: 0 0 0 1px var(--accent), 0 2px 6px rgba(0,0,0,0.4);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-card);
  box-shadow: 0 0 0 1px var(--accent), 0 2px 6px rgba(0,0,0,0.4);
}
input[type="range"]:hover::-webkit-slider-thumb {
  transform: scale(1.15);
  box-shadow: 0 0 0 1px var(--accent), 0 2px 10px var(--accent-glow);
}

/* ── Color Picker ── */
input[type="color"] {
  width: 48px;
  height: 36px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--bg-input);
  padding: 3px;
  cursor: pointer;
  transition: border-color 0.2s ease;
}
input[type="color"]:hover {
  border-color: var(--accent);
}

.color-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.color-row span {
  color: var(--text-dim);
  font-size: 18px;
}

/* ── Field Row (two columns) ── */
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* ── Checkbox ── */
.checkbox-field label {
  display: flex !important;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  text-transform: none !important;
  letter-spacing: 0 !important;
  font-size: 13px;
  color: var(--text) !important;
  margin-bottom: 0 !important;
}
.checkbox-field input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ═══════════════════════════════════════
   CHIPS
   ═══════════════════════════════════════ */
.chip-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.chip {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-input);
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
.chip:hover {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(138,180,248,0.06);
  transform: translateY(-1px);
}
.chip:active {
  transform: translateY(0);
}
.chip.selected {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-bg);
  box-shadow: 0 0 0 1px var(--accent-bg);
}

/* ═══════════════════════════════════════
   PRESET / SHAPE / ANIM GRIDS
   ═══════════════════════════════════════ */
.preset-grid,
.shape-grid,
.anim-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.preset-item,
.shape-item,
.anim-item {
  padding: 12px 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-input);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  user-select: none;
}
.preset-item:hover,
.shape-item:hover,
.anim-item:hover {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(138,180,248,0.06);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.preset-item:active,
.shape-item:active,
.anim-item:active {
  transform: translateY(0);
}
.preset-item.active,
.shape-item.active,
.anim-item.active {
  border-color: var(--accent);
  background: var(--accent-bg);
  color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent-bg), 0 2px 8px var(--accent-glow);
}

/* ═══════════════════════════════════════
   STAGE (CANVAS)
   ═══════════════════════════════════════ */
#stage {
  flex: 1;
  position: relative;
  background: #08080f;
  overflow: hidden;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
#mainCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

.canvas-overlay-info {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: flex;
  gap: 8px;
  font-size: 11px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  pointer-events: none;
}
.canvas-overlay-info span {
  background: rgba(0,0,0,0.5);
  color: rgba(255,255,255,0.45);
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

/* ═══════════════════════════════════════
   RIGHT PANEL
   ═══════════════════════════════════════ */
#rightPanel {
  width: 240px;
  min-width: 220px;
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  padding: var(--space-lg);
  flex-shrink: 0;
}

.right-section {
  margin-bottom: var(--space-lg);
}
.right-section h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  margin-bottom: var(--space-sm);
}

/* ── History Log ── */
.history-log {
  max-height: 200px;
  overflow-y: auto;
}
.log-entry {
  font-size: 11px;
  padding: 8px 10px;
  border-radius: 6px;
  margin-bottom: 4px;
  background: var(--bg-input);
  color: var(--text-dim);
  border-left: 2px solid var(--border);
  font-family: 'SF Mono', 'Fira Code', monospace;
  transition: all 0.15s ease;
}
.log-entry:first-child {
  border-left-color: var(--accent);
  color: var(--text);
  background: rgba(138,180,248,0.04);
}

/* ── Snapshots ── */
.snapshot-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}
.snapshot-item {
  aspect-ratio: 16/9;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  cursor: pointer;
  overflow: hidden;
  transition: all 0.15s ease;
}
.snapshot-item:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.snapshot-item canvas {
  width: 100%;
  height: 100%;
}

/* ═══════════════════════════════════════
   MODALS
   ═══════════════════════════════════════ */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  transition: opacity 0.25s ease;
  opacity: 0;
  pointer-events: none;
}
.modal-backdrop.open {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-xl);
  max-width: 440px;
  width: 90%;
  transform: scale(0.95) translateY(10px);
  transition: transform 0.25s ease;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-backdrop.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-lg);
}
.modal-header h2 {
  font-size: 16px;
  font-weight: 700;
}
.modal-close {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 24px;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  transition: all 0.15s ease;
}
.modal-close:hover {
  color: var(--text);
  background: var(--accent-bg);
}

.modal-body textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-input);
  color: var(--text);
  font-size: 12px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  resize: none;
  height: 80px;
  transition: border-color 0.2s ease;
}
.modal-body textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* ═══════════════════════════════════════
   PROGRESS OVERLAY
   ═══════════════════════════════════════ */
.progress-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: none;
  justify-content: center;
  align-items: center;
}
.progress-overlay.show {
  display: flex;
}
.progress-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-xl);
  text-align: center;
  min-width: 280px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.progress-box p {
  font-size: 14px;
  margin-bottom: var(--space-md);
}
.progress-bar-track {
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--space-sm);
}
.progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.2s ease;
  width: 0%;
}
.progress-bar-label {
  font-size: 11px;
  color: var(--text-dim);
  font-family: 'SF Mono', 'Fira Code', monospace;
}

/* ═══════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════ */
@media (max-width: 900px) {
  #rightPanel { display: none; }
  #leftPanel { width: 260px; min-width: 240px; }
}

@media (max-width: 600px) {
  #appBody { flex-direction: column; }
  #leftPanel {
    width: 100%;
    min-width: 0;
    max-height: 40vh;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  #stage { min-height: 50vh; }
  .header-actions { gap: 4px; }
  .secondary-btn { padding: 5px 8px; font-size: 12px; }
  .primary-btn { padding: 5px 10px; font-size: 12px; }
}