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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #dde1e7;
  height: 100vh;
  overflow: hidden;
  color: #333;
  font-size: 13px;
}

#app {
  display: flex;
  height: 100vh;
}

/* ── Sidebar ── */
#sidebar {
  width: 190px;
  min-width: 190px;
  background: #f0f2f5;
  border-right: 1px solid #d4d8df;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px 10px 20px;
  gap: 0;
}

#sidebar::-webkit-scrollbar { width: 4px; }
#sidebar::-webkit-scrollbar-thumb { background: #ccc; border-radius: 2px; }

#logo {
  font-size: 17px;
  color: #444;
  padding: 2px 0 14px;
  letter-spacing: -0.3px;
  border-bottom: 1px solid #d4d8df;
  margin-bottom: 12px;
  flex-shrink: 0;
}

/* ── Tool sections ── */
.tool-section {
  margin-bottom: 14px;
}

.section-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #9aa0ab;
  display: block;
  margin-bottom: 6px;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5px;
}

.label-row .section-label { margin-bottom: 0; }

#size-display {
  font-size: 11px;
  font-weight: 600;
  color: #555;
  min-width: 20px;
  text-align: right;
}

/* ── Tool buttons ── */
.tool-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tool-btn {
  width: 36px;
  height: 36px;
  border: 1px solid #d0d4da;
  background: #fff;
  border-radius: 7px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7px;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  color: #555;
  flex-shrink: 0;
}

.tool-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.tool-btn:hover {
  background: #e8f0fe;
  border-color: #5591e0;
  color: #3a78d4;
}

.tool-btn.active {
  background: #3a78d4;
  border-color: #3a78d4;
  color: #fff;
}

/* ── Size slider ── */
#size-slider {
  width: 100%;
  height: 4px;
  accent-color: #3a78d4;
  cursor: pointer;
}

/* ── Shape fill toggle ── */
.toggle-row {
  display: flex;
  gap: 4px;
}

.toggle-btn {
  flex: 1;
  padding: 5px 4px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid #d0d4da;
  background: #fff;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  color: #555;
}

.toggle-btn:hover { background: #e8f0fe; border-color: #5591e0; color: #3a78d4; }
.toggle-btn.active { background: #3a78d4; border-color: #3a78d4; color: #fff; }

/* ── Text options ── */
#font-family {
  width: 100%;
  padding: 5px 6px;
  font-size: 11px;
  border: 1px solid #d0d4da;
  border-radius: 5px;
  background: #fff;
  color: #333;
  cursor: pointer;
}

#font-size {
  width: 52px;
  padding: 4px 5px;
  font-size: 11px;
  border: 1px solid #d0d4da;
  border-radius: 5px;
  text-align: center;
}

.text-style-row {
  display: flex;
  gap: 4px;
  margin-top: 6px;
}

.style-btn {
  width: 30px;
  height: 28px;
  border: 1px solid #d0d4da;
  background: #fff;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  color: #555;
}

.style-btn:hover { background: #e8f0fe; border-color: #5591e0; }
.style-btn.active { background: #3a78d4; border-color: #3a78d4; color: #fff; }

/* ── Color palette ── */
#color-swatches {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 3px;
  margin-bottom: 8px;
}

.color-swatch {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 3px;
  cursor: pointer;
  border: 1px solid rgba(0,0,0,0.12);
  transition: transform 0.1s;
  position: relative;
}

.color-swatch:hover { transform: scale(1.25); z-index: 1; }
.color-swatch.selected {
  border: 2px solid #3a78d4;
  box-shadow: 0 0 0 1px #fff inset;
  transform: scale(1.1);
}

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

#current-color-box {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  border: 2px solid #d0d4da;
  background: #000;
  flex-shrink: 0;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.15);
}

#color-picker-label {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  font-size: 11px;
  color: #666;
  border: 1px solid #d0d4da;
  border-radius: 5px;
  padding: 4px 7px;
  background: #fff;
  transition: background 0.1s, border-color 0.1s;
}

#color-picker-label:hover { background: #e8f0fe; border-color: #5591e0; color: #3a78d4; }

#color-picker {
  width: 18px;
  height: 18px;
  border: none;
  padding: 0;
  background: none;
  cursor: pointer;
  border-radius: 3px;
  overflow: hidden;
}

/* ── Top bar ── */
#canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

#top-bar {
  height: 46px;
  background: #f0f2f5;
  border-bottom: 1px solid #d4d8df;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  flex-shrink: 0;
}

.bar-group {
  display: flex;
  gap: 5px;
}

.bar-brand {
  font-size: 14px;
  color: #888;
  letter-spacing: -0.3px;
}

.bar-brand strong { color: #555; }

.version-tag {
  font-size: 10px;
  font-weight: 600;
  background: #e0e8f8;
  color: #3a78d4;
  padding: 1px 5px;
  border-radius: 3px;
  vertical-align: middle;
  margin-left: 4px;
}

#top-bar button {
  padding: 5px 11px;
  font-size: 12px;
  border: 1px solid #d0d4da;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  color: #555;
  white-space: nowrap;
}

#top-bar button:hover {
  background: #e8f0fe;
  border-color: #5591e0;
  color: #3a78d4;
}

#clear-btn:hover {
  background: #fdecea;
  border-color: #e57373;
  color: #c0392b;
}

/* ── Canvas scroll area ── */
#canvas-scroll {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 28px;
  background: #dde1e7;
}

#canvas-scroll::-webkit-scrollbar { width: 10px; height: 10px; }
#canvas-scroll::-webkit-scrollbar-track { background: #cdd1d8; }
#canvas-scroll::-webkit-scrollbar-thumb { background: #aab0ba; border-radius: 5px; }
#canvas-scroll::-webkit-scrollbar-thumb:hover { background: #8e96a2; }

/* ── Canvas wrapper (paper shadow) ── */
#canvas-wrapper {
  position: relative;
  display: inline-block;
  box-shadow:
    0 1px 3px rgba(0,0,0,0.12),
    0 4px 16px rgba(0,0,0,0.16),
    0 12px 40px rgba(0,0,0,0.10);
  border-radius: 1px;
  flex-shrink: 0;
}

#main-canvas {
  display: block;
  background: #fff;
  cursor: crosshair;
}

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

/* ── Delete selected button ── */
.delete-btn {
  width: 100%;
  padding: 5px 8px;
  font-size: 11px;
  font-weight: 500;
  border: 1px solid #e57373;
  background: #fff;
  color: #c0392b;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.1s;
}
.delete-btn:hover { background: #fdecea; }

/* ── Zoom control ── */
.zoom-control {
  display: flex;
  align-items: center;
  gap: 5px;
}

#zoom-display {
  font-size: 11px;
  font-weight: 600;
  color: #555;
  min-width: 36px;
  text-align: right;
  white-space: nowrap;
}

#zoom-slider {
  width: 80px;
  height: 4px;
  accent-color: #3a78d4;
  cursor: pointer;
}

/* ── Sidebar toggle (hidden on desktop) ── */
.sidebar-toggle-btn {
  display: none;
  padding: 5px 10px;
  font-size: 15px;
  border: 1px solid #d0d4da;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  color: #555;
  line-height: 1;
}

.sidebar-toggle-btn:hover {
  background: #e8f0fe;
  border-color: #5591e0;
  color: #3a78d4;
}

/* ── Mobile responsive ── */
@media (max-width: 700px) {
  .sidebar-toggle-btn { display: flex; align-items: center; justify-content: center; }

  #sidebar {
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 2px 0 12px rgba(0,0,0,0.18);
  }

  #sidebar.open { transform: translateX(0); }

  #canvas-scroll { padding: 12px; }

  .bar-brand { display: none; }

  #zoom-slider { width: 60px; }

  .zoom-control { gap: 3px; }
}

@media (max-width: 400px) {
  #zoom-slider { display: none; }
  #zoom-display { display: none; }
}

/* ── Text input overlay ── */
.text-input-overlay {
  position: absolute;
  border: 1.5px dashed #3a78d4;
  background: transparent;
  outline: none;
  resize: none;
  padding: 2px 4px;
  z-index: 10;
  overflow: hidden;
  line-height: 1.25;
  word-wrap: break-word;
  white-space: pre-wrap;
  box-sizing: border-box;
}

/* ── Impressum ── */
#impressum-btn {
  position: fixed;
  bottom: 10px;
  right: 14px;
  font-size: 11px;
  color: #666;
  background: rgba(255,255,255,0.85);
  border: 1px solid #d0d4da;
  border-radius: 5px;
  cursor: pointer;
  padding: 4px 9px;
  z-index: 50;
  font-family: inherit;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
#impressum-btn:hover { background: #fff; color: #3a78d4; border-color: #5591e0; }

.impressum-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 300;
  align-items: center;
  justify-content: center;
}
.impressum-overlay.open { display: flex; }

.impressum-box {
  background: #fff;
  border-radius: 10px;
  padding: 32px 36px;
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
}

.impressum-close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 22px;
  background: none;
  border: none;
  cursor: pointer;
  color: #aaa;
  line-height: 1;
  font-family: inherit;
}
.impressum-close:hover { color: #333; }

.impressum-box h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
  color: #222;
}
.impressum-box h3 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #9aa0ab;
  margin: 18px 0 6px;
}
.impressum-box p {
  font-size: 13px;
  color: #444;
  line-height: 1.7;
}
.impressum-box a { color: #3a78d4; }