/* Colouring game — kid-friendly paint-by-tap. */

.col-body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background: var(--bg);
}

/* -------- Header -------- */

.col-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  flex-shrink: 0;
}

.col-title {
  flex: 1;
  text-align: center;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.col-header-btn {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: none;
  background: var(--bg-2);
  color: var(--fg);
  font-size: 1.2rem;
  cursor: pointer;
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}

.col-header-btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}

/* -------- Stage (the drawing itself) -------- */

.col-main {
  flex: 1;
  min-height: 0;
  display: flex;
  padding: 0.25rem 0.5rem;
}

.col-stage {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
  overflow: hidden;
  padding: 0.5rem;
}

.col-stage svg {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  display: block;
  touch-action: none;
}

/* Every fillable region gets a tap cursor and a nice satisfying
   "press" animation when you touch it. */
.col-stage [data-region] {
  cursor: pointer;
  transition: filter 0.12s ease;
}

.col-stage [data-region]:active {
  filter: brightness(0.9);
}

/* -------- Footer: palette + tools -------- */

.col-footer {
  flex-shrink: 0;
  padding: 0.5rem 0.75rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.col-palette {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 5px;
}

.col-swatch {
  aspect-ratio: 1 / 1;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
  position: relative;
}

.col-swatch[aria-pressed="true"] {
  border-color: #ffffff;
  transform: scale(1.1);
  box-shadow: 0 3px 0 rgba(0, 0, 0, 0.35),
    0 0 0 2px var(--accent);
  z-index: 1;
}

/* White swatch needs a visible outline even when not selected. */
.col-swatch[data-colour="#ffffff"] {
  border-color: #888;
}

/* -------- Tool bar -------- */

.col-tools {
  display: flex;
  gap: 0.3rem;
  justify-content: center;
  align-items: stretch;
}

.col-tools__sep {
  width: 1px;
  background: rgba(255, 255, 255, 0.15);
  margin: 0.15rem 0.1rem;
  flex-shrink: 0;
}

.col-tool {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 0.3rem 0.45rem 0.25rem;
  border: 2px solid transparent;
  border-radius: 10px;
  background: var(--bg-2);
  color: var(--fg);
  cursor: pointer;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.25);
  font: inherit;
  min-width: 0;
}

.col-tool__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.col-tool__label {
  font-size: 0.55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.8;
  line-height: 1;
}

.col-tool:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}

.col-tool[aria-pressed="true"] {
  background: var(--accent);
  color: #222;
  border-color: #fff6b0;
}

.col-tool:disabled {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.col-tool--danger {
  color: #ff5252;
}

/* -------- Wipe confirmation overlay -------- */

.col-overlay {
  position: fixed;
  border-radius: 0;
  z-index: 10;
}

.col-confirm-btns {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1rem;
}

.col-btn--cancel {
  background: var(--bg);
  color: var(--fg);
}