/* ===== Variables ===== */
:root {
  --bg: #f0f0f0;
  --surface: #ffffff;
  --surface-2: #f5f5f5;
  --text: #1f2937;
  --text-muted: #6b7280;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
  --border: #d1d5db;
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
  --radius: 6px;
  --toolbar-w: 52px;
  --panel-w: 200px;
  --topbar-h: 44px;
  --statusbar-h: 28px;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* ===== Topbar ===== */
.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 12px;
  flex-shrink: 0;
  box-shadow: var(--shadow);
  z-index: 10;
}

.topbar__brand {
  font-weight: 700;
  font-size: 15px;
  color: var(--accent);
  margin-right: 8px;
  white-space: nowrap;
}

.topbar__menu {
  display: flex;
  gap: 4px;
  border-right: 1px solid var(--border);
  padding-right: 12px;
}

.topbar__actions {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.topbar__btn {
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 4px 10px;
  cursor: pointer;
  color: var(--text);
  font-size: 12px;
  transition: background 150ms, border-color 150ms;
  white-space: nowrap;
}
.topbar__btn:hover {
  background: var(--surface-2);
  border-color: var(--border);
}
.topbar__btn--danger { color: var(--danger); }
.topbar__btn--danger:hover { background: #fef2f2; border-color: #fecaca; }

/* ===== Workspace ===== */
.workspace {
  flex: 1;
  display: flex;
  overflow: hidden;
}

/* ===== Toolbar (gauche) ===== */
.toolbar {
  width: var(--toolbar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 0;
  gap: 4px;
  flex-shrink: 0;
  overflow-y: auto;
}

.toolbar__btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--text-muted);
  transition: background 150ms, color 150ms, border-color 150ms;
  padding: 6px;
}
.toolbar__btn svg { width: 100%; height: 100%; }
.toolbar__btn:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}
.toolbar__btn--active {
  background: #eff6ff;
  color: var(--accent);
  border-color: #bfdbfe;
}
.toolbar__btn--mode {
  color: var(--text-muted);
  font-size: 10px;
}
.toolbar__separator {
  width: 28px;
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* ===== Canvas area ===== */
.canvas-area {
  flex: 1;
  overflow: auto;
  background: var(--bg);
}

#canvas-area-content {
  position: relative;
  min-width: 100%;
  min-height: 100%;
}

.canvas-wrapper {
  position: absolute;
  top: 20px;
  left: 20px;
  transform-origin: top left;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.15);
  cursor: crosshair;
}

#canvas-main,
#canvas-overlay {
  display: block;
}

#canvas-overlay {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

/* ===== Panel (droite) ===== */
.panel {
  width: var(--panel-w);
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0;
  flex-shrink: 0;
  overflow-y: auto;
}

.panel__section {
  padding: 12px;
  border-bottom: 1px solid var(--border);
}

.panel__title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* Color pickers */
.color-pickers {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.color-swatch-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.color-swatch-label {
  font-size: 10px;
  color: var(--text-muted);
}

.color-input {
  width: 44px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2px;
  cursor: pointer;
  background: none;
}

/* Palette */
.color-palette {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 4px;
}

.color-palette__swatch {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 3px;
  border: 1px solid rgba(0,0,0,0.1);
  cursor: pointer;
  transition: transform 100ms;
}
.color-palette__swatch:hover { transform: scale(1.15); }

/* Slider */
.slider {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Zoom controls */
.zoom-controls {
  display: flex;
  align-items: center;
  gap: 6px;
}

.zoom-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 150ms;
}
.zoom-btn:hover { background: var(--border); }
.zoom-btn:active { background: var(--accent); color: #fff; border-color: var(--accent); }

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

/* Panel inputs */
.panel__input {
  width: 100%;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  margin-bottom: 6px;
  color: var(--text);
  background: var(--surface);
}
.panel__select {
  width: 100%;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
}

/* ===== Statusbar ===== */
.statusbar {
  height: var(--statusbar-h);
  background: var(--surface);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 16px;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.statusbar__zoom {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.zoom-btn--sm {
  width: 20px;
  height: 20px;
  font-size: 13px;
  border-radius: 4px;
  padding: 0;
}

.statusbar__select {
  font-size: 11px;
  padding: 2px 4px;
  height: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  max-width: 160px;
}

/* ===== Modal ===== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 150ms;
}
.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border-radius: 10px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  padding: 24px;
  min-width: 280px;
  max-width: 90vw;
}

.modal__title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

.modal__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}

.modal__label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
  color: var(--text-muted);
}

.modal__input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  width: 100%;
}
.modal__input:focus { outline: 2px solid var(--accent); border-color: transparent; }

.modal__footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* ===== Buttons ===== */
.btn {
  padding: 6px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  transition: background 150ms;
}
.btn:hover { background: var(--border); }
.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }

/* ===== Curseurs par outil ===== */
.cursor-select   { cursor: default; }
.cursor-pan      { cursor: grab; }
.cursor-pan:active { cursor: grabbing; }
.cursor-pencil   { cursor: crosshair; }
.cursor-eraser   { cursor: cell; }
.cursor-fill     { cursor: cell; }
.cursor-eyedrop  { cursor: crosshair; }
.cursor-text     { cursor: text; }
.cursor-default  { cursor: crosshair; }