/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-primary: #0d0f14;
  --bg-secondary: #151a20;
  --bg-panel: #1a2028;
  --bg-card: #222a34;
  --bg-input: #2a3440;
  --border-color: #3a4656;
  --text-primary: #e8edf2;
  --text-secondary: #8a9aa8;
  --text-muted: #5a6a7a;
  --accent: #7a8cff;
  --accent-hover: #9aacff;
  --accent-dim: rgba(122, 140, 255, 0.15);
  --green: #4ade80;
  --orange: #fbbf24;
  --red: #f87171;
  --radius: 10px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html,
body {
  height: 100%;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 14px;
  overflow: hidden;
  user-select: none;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ===== LAYOUT ===== */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  min-height: 0;
}

/* ===== HEADER ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  height: 56px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-brand .logo {
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-brand .logo span {
  font-weight: 300;
  -webkit-text-fill-color: var(--text-secondary);
}

.header-actions {
  display: flex;
  gap: 8px;
}

.header-actions .badge {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg-card);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

/* ===== MAIN BODY ===== */
.main-body {
  display: flex;
  flex: 1;
  min-height: 0;
  gap: 0;
}

/* ===== CANVAS PANEL ===== */
.canvas-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  position: relative;
  min-width: 0;
  min-height: 0;
}

.canvas-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  position: relative;
  min-height: 0;
}

.canvas-wrapper canvas {
  max-width: 100%;
  max-height: 100%;
  image-rendering: pixelated;
  background: repeating-conic-gradient(var(--bg-card) 0% 25%,
      var(--bg-secondary) 0% 50%) 0 0 / 20px 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-color);
}

.canvas-overlay-info {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-secondary);
  pointer-events: none;
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

/* ===== CONTROLS PANEL ===== */
.controls-panel {
  width: 340px;
  min-width: 300px;
  max-width: 420px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}

.controls-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== CONTROL SECTIONS ===== */
.ctrl-section {
  background: var(--bg-panel);
  border-radius: var(--radius);
  padding: 14px 16px;
  border: 1px solid var(--border-color);
}

.ctrl-section .section-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 10px;
  font-weight: 600;
}

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

.ctrl-row .label {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 48px;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font);
  white-space: nowrap;
  height: 32px;
}

.btn:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-success {
  background: var(--green);
  border-color: var(--green);
  color: #0d0f14;
}
.btn-success:hover {
  filter: brightness(1.1);
}

.btn-outline {
  background: transparent;
  border-color: var(--border-color);
}
.btn-outline:hover {
  background: var(--bg-card);
}

.btn-sm {
  height: 26px;
  padding: 4px 10px;
  font-size: 11px;
}

/* ===== DROP ZONE ===== */
.drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  background: var(--bg-card);
  color: var(--text-secondary);
}

.drop-zone:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-dim);
  transform: scale(1.01);
}

.drop-zone .icon {
  font-size: 32px;
  display: block;
  margin-bottom: 6px;
}

.drop-zone .hint {
  font-size: 12px;
}

.drop-zone .filename {
  color: var(--text-primary);
  font-weight: 500;
  margin-top: 4px;
}

/* ===== POSE GRID ===== */
.pose-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.pose-btn {
  padding: 6px 4px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
  font-family: var(--font);
  font-weight: 500;
}

.pose-btn:hover {
  background: var(--bg-card);
  border-color: var(--text-muted);
  color: var(--text-primary);
}

.pose-btn.active {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

/* ===== DIRECTION GRID ===== */
.dir-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  max-width: 220px;
}

.dir-btn {
  padding: 4px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: var(--bg-input);
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s ease;
  font-family: var(--font);
}

.dir-btn:hover {
  background: var(--bg-card);
}
.dir-btn.active {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
}

/* ===== SLIDER ===== */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: var(--bg-input);
  outline: none;
  transition: background 0.2s;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
  box-shadow: 0 0 0 1px var(--border-color);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-primary);
}

.slider-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.slider-row .value {
  font-size: 12px;
  color: var(--text-secondary);
  min-width: 28px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ===== STATUS BAR ===== */
.status-bar {
  padding: 6px 16px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  height: 32px;
}

.status-bar .status-msg {
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-bar .status-msg .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}
.dot.idle {
  background: var(--text-muted);
}
.dot.loading {
  background: var(--orange);
  animation: pulse 0.8s infinite;
}
.dot.done {
  background: var(--green);
}
.dot.error {
  background: var(--red);
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* ===== EXPORT PREVIEW ===== */
.export-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
  max-height: 120px;
  overflow-y: auto;
  padding: 4px;
}

.export-preview .thumb {
  width: 48px;
  height: 48px;
  image-rendering: pixelated;
  background: repeating-conic-gradient(var(--bg-card) 0% 25%,
      var(--bg-secondary) 0% 50%) 0 0 / 12px 12px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  object-fit: contain;
}

/* ===== UTILITY ===== */
.hidden-input {
  display: none;
}
.mt-1 {
  margin-top: 6px;
}
.mb-1 {
  margin-bottom: 6px;
}
.flex {
  display: flex;
}
.gap-1 {
  gap: 6px;
}
.gap-2 {
  gap: 10px;
}
.w-full {
  width: 100%;
}
.text-center {
  text-align: center;
}
.text-muted {
  color: var(--text-secondary);
  font-size: 12px;
}

.toggle-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
}

.toggle-label input[type="checkbox"] {
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 820px) {
  .controls-panel {
    width: 280px;
    min-width: 240px;
  }
  .pose-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 680px) {
  .main-body {
    flex-direction: column;
  }
  .controls-panel {
    width: 100%;
    max-width: 100%;
    border-left: none;
    border-top: 1px solid var(--border-color);
    max-height: 50vh;
  }
  .canvas-wrapper {
    padding: 8px;
  }
  .header {
    padding: 8px 12px;
    height: 48px;
  }
  .header-brand .logo {
    font-size: 15px;
  }
  .controls-scroll {
    padding: 12px;
  }
}