:root {
  --bg: #f4efe7;
  --canvas-bg: #faf6ee;
  --panel: #ffffff;
  --ink: #2a2622;
  --ink-soft: #5b544c;
  --muted: #9c958b;
  --border: #ebe4d6;
  --border-soft: #f1ece2;
  --accent: #c45a3f;
  --accent-soft: rgba(196, 90, 63, 0.12);
  --danger: #b03a3a;
  --shadow-pop: 0 14px 40px rgba(40, 30, 20, 0.14), 0 2px 10px rgba(40, 30, 20, 0.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--bg);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

button { font: inherit; cursor: default; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.layout { display: flex; height: 100vh; }

/* ===== Canvas area ===== */
.canvas-wrap {
  flex: 1;
  position: relative;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.5), transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(0,0,0,0.03), transparent 50%),
    var(--bg);
  display: flex;
  flex-direction: column;
}

.canvas {
  flex: 1;
  position: relative;
  margin: 24px;
  border-radius: 6px;
  background-color: var(--canvas-bg);
  background-image:
    repeating-linear-gradient(45deg, rgba(0,0,0,0.012) 0 2px, transparent 2px 5px),
    repeating-linear-gradient(-45deg, rgba(255,255,255,0.05) 0 2px, transparent 2px 5px);
  box-shadow: inset 0 0 0 1px var(--border);
  overflow: hidden;
  cursor: default;
}
.canvas.shift-held { cursor: grab; }
.canvas.panning { cursor: grabbing; }
body.panning,
body.panning * { cursor: grabbing !important; }

.paper-svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.selection-layer { position: absolute; inset: 0; pointer-events: none; }

.piece-shape { cursor: default; }
.piece-shape.dragging { cursor: grabbing; }

.selection-box {
  position: absolute;
  border: 1.5px dashed var(--accent);
  border-radius: 2px;
  pointer-events: none;
  box-sizing: border-box;
}
.handle {
  position: absolute;
  width: 9px; height: 9px;
  background: white;
  border: 1.5px solid var(--accent);
  border-radius: 2px;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}
.handle.n, .handle.s { cursor: ns-resize; }
.handle.e, .handle.w { cursor: ew-resize; }
.handle.ne, .handle.sw { cursor: nesw-resize; }
.handle.nw, .handle.se { cursor: nwse-resize; }
.handle.rotate {
  border-radius: 50%;
  background: var(--accent);
  border-color: white;
  width: 11px; height: 11px;
  cursor: crosshair;
}
.rotate-line {
  position: absolute;
  width: 1.5px;
  background: var(--accent);
  transform-origin: top center;
  pointer-events: none;
}

.marquee-box {
  position: absolute;
  border: 1.5px dashed var(--accent);
  background: var(--accent-soft);
  pointer-events: none;
  box-sizing: border-box;
  border-radius: 2px;
}

/* ===== Right rail ===== */
.rail {
  width: 60px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0;
  gap: 6px;
}
.rail-btn {
  width: 42px; height: 42px;
  border: none;
  background: transparent;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  color: var(--ink);
  transition: background 0.15s ease, transform 0.06s ease;
}
.rail-btn:hover { background: var(--bg); }
.rail-btn:active { transform: scale(0.94); }
.rail-divider {
  width: 24px; height: 1px;
  background: var(--border);
  margin: 6px 0;
}

.rail-icon { display: block; }
.rail-icon.circle {
  width: 22px; height: 22px; background: var(--ink); border-radius: 50%;
}
.rail-icon.rect {
  width: 22px; height: 22px; background: var(--ink); border-radius: 3px;
}
.rail-icon.triangle {
  width: 0; height: 0;
  border-left: 12px solid transparent;
  border-right: 12px solid transparent;
  border-bottom: 21px solid var(--ink);
}

/* ===== Floating controls ===== */
.floating-controls {
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, calc(-100% + 10px)) scale(0.96);
  transform-origin: 50% 100%;
  transition: opacity 0.16s ease-out, transform 0.22s cubic-bezier(0.34, 1.4, 0.64, 1);
  z-index: 10;
  will-change: transform, opacity;
}
.floating-controls.visible {
  opacity: 1;
  transform: translate(-50%, -100%) scale(1);
  pointer-events: auto;
}
.floating-controls.below {
  transform: translate(-50%, 10px) scale(0.96);
  transform-origin: 50% 0%;
}
.floating-controls.below.visible {
  transform: translate(-50%, 0) scale(1);
}

.fc-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow: var(--shadow-pop);
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 420px;
  max-width: 520px;
}

.fc-row {
  display: flex;
  align-items: center;
  gap: 6px;
}
.fc-label {
  font-size: 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  width: 46px;
  flex-shrink: 0;
}

.fc-swatch {
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.08);
  padding: 0;
  transition: transform 0.12s ease;
  position: relative;
}
.fc-swatch:hover { transform: scale(1.18); }
.fc-swatch.active {
  outline: 2px solid var(--accent);
  outline-offset: 1.5px;
}
.fc-picker {
  width: 26px; height: 26px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%, rgba(255,255,255,0.55), rgba(255,255,255,0) 55%),
    conic-gradient(from 0deg,
      #ff5e5e, #ffb84d, #ffe14d, #a3e635, #4ade80,
      #38bdf8, #6366f1, #a855f7, #ec4899, #ff5e5e);
  padding: 0;
  margin-left: 10px;
  overflow: hidden;
  cursor: default;
  -webkit-appearance: none;
  appearance: none;
  box-shadow:
    0 0 0 1.5px var(--border),
    0 2px 6px rgba(40, 30, 20, 0.14);
  transition: transform 0.15s ease, box-shadow 0.18s ease;
  position: relative;
  flex-shrink: 0;
}
.fc-picker:hover {
  transform: scale(1.12);
  box-shadow:
    0 0 0 1.5px var(--accent),
    0 4px 12px rgba(40, 30, 20, 0.22);
}
.fc-picker::-webkit-color-swatch-wrapper { padding: 0; opacity: 0; }
.fc-picker::-webkit-color-swatch { border: none; opacity: 0; }
.fc-picker::-moz-color-swatch { border: none; opacity: 0; }

.fc-pip {
  width: 14px; height: 14px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: transparent;
  padding: 0;
  transition: all 0.15s ease;
}
.fc-pip:hover { border-color: var(--ink-soft); }
.fc-pip.active {
  background: var(--ink);
  border-color: var(--ink);
}

.fc-actions { justify-content: flex-end; gap: 6px; flex-wrap: nowrap; }
.fc-sep {
  flex: 1;
  min-width: 4px;
}
.fc-btn {
  height: 28px;
  padding: 0 12px;
  border-radius: 7px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--ink);
  font-size: 12px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.fc-btn:hover { background: var(--bg); }
.fc-btn.primary {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}
.fc-btn.primary:hover { background: var(--accent); border-color: var(--accent); }
.fc-btn.danger { color: var(--danger); border-color: rgba(176,58,58,0.18); }
.fc-btn.danger:hover { background: var(--danger); color: white; border-color: var(--danger); }

.fc-shadow-row { gap: 4px; }
.fc-shadow-row .fc-label { margin-right: 10px; }

/* ===== Modal dialog ===== */
.modal-root {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.modal-root.open {
  pointer-events: auto;
  opacity: 1;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(20, 16, 12, 0.42);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}
.modal-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px 22px 18px;
  min-width: 340px;
  max-width: 420px;
  box-shadow: 0 30px 70px rgba(20, 16, 12, 0.28), 0 4px 14px rgba(20, 16, 12, 0.1);
  transform: translateY(12px) scale(0.94);
  transition: transform 0.26s cubic-bezier(0.34, 1.4, 0.64, 1);
}
.modal-root.open .modal-card {
  transform: translateY(0) scale(1);
}
.modal-title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}
.modal-message {
  margin: 0 0 18px;
  font-size: 13px;
  color: var(--ink-soft);
  line-height: 1.5;
}
.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.modal-actions .fc-btn {
  height: 32px;
  padding: 0 14px;
  font-size: 12.5px;
}

/* ===== Status toast ===== */
.status-toast {
  position: absolute;
  bottom: 38px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: rgba(42, 38, 34, 0.92);
  color: #fafaf6;
  padding: 7px 14px;
  border-radius: 100px;
  font-size: 11.5px;
  letter-spacing: 0.3px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.22s ease;
  z-index: 20;
}
.status-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}