:root {
  --bg: #faf7f2;
  --ink: #1d1d1f;
  --muted: #6b6b70;
  --accent: #ff3b30;
  --accent-dark: #c0271e;
  --border: #e4e0d8;
  --card: #ffffff;
  --shadow: 0 4px 24px rgba(0,0,0,.08);
}

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

/* ---------------- Upload page ---------------- */
.upload-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.card {
  background: var(--card);
  border-radius: 16px;
  padding: 32px;
  max-width: 520px;
  width: 100%;
  box-shadow: var(--shadow);
}
.card h1 { margin: 0 0 8px; font-size: 28px; }
.lede { margin: 0 0 24px; color: var(--muted); }
.fineprint { font-size: 13px; color: var(--muted); text-align: center; margin: 16px 0 0; }

/* Mode selector cards */
.mode-fieldset {
  border: 0;
  padding: 0;
  margin: 0 0 16px;
}
.mode-legend {
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 8px;
  padding: 0;
}
.mode-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  margin-bottom: 8px;
  background: #fff;
  transition: border-color .15s ease, background .15s ease;
}
.mode-card:has(input:checked) {
  border-color: var(--accent);
  background: #fff5f4;
}
.mode-card input[type=radio] {
  margin-top: 4px;
  accent-color: var(--accent);
  flex-shrink: 0;
}
.mode-title {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 2px;
}
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  vertical-align: middle;
  margin-left: 4px;
}
.mode-sub { font-size: 13px; color: var(--muted); line-height: 1.4; }

/* Two big upload buttons (phone-friendly) */
.upload-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.upload-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 12px;
  background: #fdfcf9;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  text-align: center;
  transition: border-color .15s ease, background .15s ease;
}
.upload-btn:hover { border-color: var(--accent); background: #fff5f4; }
.upload-btn input[type=file] { display: none; }
.ub-ico { font-size: 28px; line-height: 1; }
.ub-label { color: var(--ink); }

.dropzone {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 2px dashed #c9c4ba;
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all .15s ease;
  background: #fdfcf9;
}
.dropzone.hover { border-color: var(--accent); background: #fff5f4; }
.dropzone input[type=file] { display: none; }
.dz-text strong { font-size: 15px; color: var(--muted); }
.dz-text small { color: var(--muted); }

#preview { margin: 16px 0; text-align: center; }
#preview img { max-width: 100%; max-height: 220px; border-radius: 8px; }
#preview-name { color: var(--muted); font-size: 13px; margin-top: 8px; }

button {
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
}
#submit-btn {
  width: 100%;
  margin-top: 16px;
  padding: 14px;
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 10px;
  font-weight: 600;
}
#submit-btn:disabled { background: #ddd; color: #999; cursor: not-allowed; }

/* ---------------- Coloring page ---------------- */
.color-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: #ecebe6;
  overflow-x: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
  flex-wrap: wrap;
}

.icon-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  width: 40px; height: 40px;
  font-size: 22px;
  color: var(--ink);
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { background: #f1ede4; }

.tools { display: flex; gap: 6px; }
.tool {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 12px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}
.tool span { font-weight: 500; }
.tool.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.tool.undo-btn { cursor: pointer; }
.tool.undo-btn:disabled { opacity: .35; cursor: not-allowed; }
.tool.undo-btn:not(:disabled):hover { background: #f1ede4; }

.size-control {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.size-label { font-size: 13px; color: var(--muted); }
#size-slider { width: 110px; }

/* Swatch doubles as the palette-opener (replaces the old hamburger button).
   Bigger + outlined + scale-on-active for clear tappable affordance on mobile. */
.current-swatch {
  width: 44px; height: 44px;
  padding: 0;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--ink), inset 0 0 0 1px rgba(0,0,0,.06);
  background: #ff3b30;
  cursor: pointer;
  position: relative;
  transition: transform .12s ease;
}
.current-swatch::after {
  content: "";
  position: absolute;
  right: -4px; bottom: -4px;
  width: 16px; height: 16px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 50%;
  /* tiny "pick" indicator: 3 dots so it reads as "menu" not just "color" */
  background-image: radial-gradient(circle at 4px center, var(--ink) 1.2px, transparent 1.5px),
                    radial-gradient(circle at 8px center, var(--ink) 1.2px, transparent 1.5px),
                    radial-gradient(circle at 12px center, var(--ink) 1.2px, transparent 1.5px);
}
.current-swatch:active { transform: scale(.94); }
.current-swatch:hover { box-shadow: 0 0 0 2px var(--accent), inset 0 0 0 1px rgba(0,0,0,.06); }

/* Shape picker popover — opens when tapping the Shape tool a second time.
   Position is set dynamically in JS (anchored to Shape button), not via CSS. */
.shape-picker {
  position: fixed;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 6px;
  display: flex;
  gap: 4px;
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
  z-index: 45;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity .15s ease, transform .15s ease;
}
.shape-picker.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.shape-opt {
  width: 48px;
  height: 48px;
  padding: 6px;
  background: transparent;
  border: 1.5px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}
.shape-opt:hover { background: #f1ede4; }
.shape-opt.selected {
  border-color: var(--accent);
  background: rgba(255,59,48,.08);
}

/* Stroke-size indicator: follows pointer to preview brush/eraser/spray reach */
.size-cursor {
  position: fixed;
  pointer-events: none;
  border: 1.5px solid rgba(29,29,31,.55);
  background: rgba(255,255,255,.12);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  z-index: 50;
  transition: width .08s linear, height .08s linear;
}

.spacer { flex: 1; }

.text-btn {
  padding: 8px 14px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--ink);
  font-size: 14px;
}
.text-btn:hover { background: #f1ede4; }
.text-btn.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.text-btn.primary:hover { background: var(--accent-dark); }

/* Drawer */
.drawer {
  position: fixed;
  top: 0; left: 0;
  height: 100%;
  width: 300px;
  max-width: 85vw;
  background: var(--card);
  box-shadow: 4px 0 24px rgba(0,0,0,.15);
  transform: translateX(-100%);
  transition: transform .25s ease;
  z-index: 40;
  display: flex; flex-direction: column;
  padding: 16px;
}
.drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.drawer-head h2 { margin: 0; font-size: 18px; }

.palette {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}
.swatch {
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--border);
  cursor: pointer;
  transition: transform .1s ease;
}
.swatch:hover { transform: scale(1.06); }
.swatch.selected {
  box-shadow: 0 0 0 2px var(--ink);
}
.swatch.white { border-color: #ddd; }

.custom-color {
  margin-top: 16px;
  display: flex; align-items: center; justify-content: space-between;
  font-size: 14px;
}
.custom-color input[type=color] {
  width: 48px; height: 32px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: transparent;
  padding: 2px;
}

.drawer-note {
  margin-top: auto;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}

.drawer-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.35);
  z-index: 35;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translate(-50%, 16px);
  background: rgba(29,29,31,.92);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  opacity: 0;
  transition: opacity .2s ease, transform .25s ease;
  z-index: 100;
  pointer-events: none;
  max-width: calc(100vw - 32px);
  text-align: center;
}
.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Canvas */
.canvas-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow: auto;
}
#canvas {
  background: #fff;
  box-shadow: var(--shadow);
  border-radius: 4px;
  max-width: 100%;
  max-height: calc(100vh - 100px);
  cursor: crosshair;
  touch-action: none;
}
#loading {
  position: absolute;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 600px) {
  .size-control { order: 5; flex: 1 1 100%; }
  .tool span { display: none; }
  .text-btn { padding: 8px 10px; font-size: 13px; }
}

/* Print */
@media print {
  body { background: #fff; }
  .no-print { display: none !important; }
  .canvas-wrap { padding: 0; overflow: visible; }
  #canvas {
    max-width: 100%;
    max-height: none;
    box-shadow: none;
    border-radius: 0;
  }
}