/* ============================================================
   이미지 색상 팔레트 추출 전용 스타일
   (색상·간격·카드 등 공통 토큰은 common.css 재사용)
   - 이 도구의 모티프: 물감 견본 띠(색상 밴드)
   - 본체는 이미지 도구들과 같은 "작업대" 톤: 각진 패널, 모노 수치
   ============================================================ */

:root {
  --pl-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas,
             "Liberation Mono", "Nanum Gothic Coding", monospace;
  --pl-strip-opacity: .5;
  /* 미리보기 캔버스 뒤 체커보드 (투명 이미지 대비) */
  --pl-check-bg: #ffffff;
  --pl-check-fg: rgba(0, 0, 0, .10);
}
:root[data-theme="dark"] {
  --pl-strip-opacity: .3;
  --pl-check-bg: #26262b;
  --pl-check-fg: rgba(255, 255, 255, .09);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --pl-strip-opacity: .3;
    --pl-check-bg: #26262b;
    --pl-check-fg: rgba(255, 255, 255, .09);
  }
}

/* ---- 도입부: 물감 견본 띠 배경 (이 도구의 얼굴) ----
   차분하게 가라앉힌 다섯 색 밴드. 팔레트 도구의 정체성 */
.swatch-strip { position: relative; overflow: hidden; }
.swatch-strip > * { position: relative; }
.swatch-strip::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg,
    #b8543f 0 20%, #c99a4b 0 40%, #7e8f6b 0 60%,
    #5f7d99 0 80%, #7d6480 0 100%);
  opacity: calc(var(--pl-strip-opacity) * .5);
  -webkit-mask-image:
    linear-gradient(180deg, transparent 0 68%, rgba(0,0,0,.9) 76%, rgba(0,0,0,.9) 100%),
    linear-gradient(115deg, rgba(0,0,0,.8), transparent 60%);
          mask-image:
    linear-gradient(180deg, transparent 0 68%, rgba(0,0,0,.9) 76%, rgba(0,0,0,.9) 100%),
    linear-gradient(115deg, rgba(0,0,0,.8), transparent 60%);
  -webkit-mask-composite: source-in;
          mask-composite: intersect;
  pointer-events: none;
}

.tool-intro {
  padding: var(--space-6) 0 var(--space-5);
  margin-bottom: var(--space-5);
}
.tool-intro h1 {
  margin: 0 0 var(--space-3);
  max-width: 20ch;
  font-size: clamp(2.1rem, 5vw, 3.1rem);
  line-height: 1.18;
  letter-spacing: -.02em;
}
.lead {
  color: var(--color-text-sub);
  margin: var(--space-2) 0 var(--space-2);
  max-width: 60ch;
  font-size: 1.02rem;
}
.lead-note {
  color: var(--color-text-sub);
  font-size: .85rem;
  opacity: .85;
  margin: 0 0 var(--space-5);
}

/* ============================================================
   작업대 패널: 드롭존 + 작업 공간
   ============================================================ */
.pl-panel {
  border-radius: var(--radius-sm);   /* 공통 카드보다 각지게: 작업대 톤 */
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* ---- 드롭존 ---- */
.pl-drop {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  cursor: pointer;
}
.pl-drop:hover, .pl-drop:focus-visible { border-color: var(--color-primary); }
.pl-drop:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.pl-drop.is-drag {
  border-color: var(--color-primary);
  background: var(--color-primary-weak);
}
.pl-drop.is-compact { padding: var(--space-3) var(--space-4); }
.pl-drop.is-compact .pl-drop-sub { display: none; }
.pl-drop-main { margin: 0 0 6px; font-weight: 600; }
.pl-drop.is-compact .pl-drop-main { margin: 0; font-size: .88rem; font-weight: 500; }
.pl-drop-main u { text-decoration-color: var(--color-primary); text-underline-offset: 3px; }
.pl-drop-sub { margin: 0; font-size: .8rem; color: var(--color-text-sub); }

/* ---- 작업 공간: 미리보기 + 팔레트 ---- */
.pl-workspace {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: var(--space-5);
  align-items: start;
}
@media (max-width: 760px) {
  .pl-workspace { grid-template-columns: 1fr; }
}

/* 미리보기 캔버스 (스포이드) */
.pl-canvas-wrap {
  position: relative;
  background-color: var(--pl-check-bg);
  background-image: conic-gradient(var(--pl-check-fg) 25%, transparent 0 50%,
                                   var(--pl-check-fg) 0 75%, transparent 0);
  background-size: 14px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
#imgCanvas {
  display: block;
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: contain;
  cursor: crosshair;
  touch-action: manipulation;
}
.pl-canvas-hint {
  margin: var(--space-2) 0 0;
  font-size: .78rem;
  color: var(--color-text-sub);
}
/* 마우스 아래 색 미리보기 칩 (캔버스 좌상단 고정) */
.pl-hover {
  position: absolute;
  top: 8px;
  left: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 9px;
  border-radius: 6px;
  background: rgba(20, 17, 12, .78);
  color: #fff;
  font-family: var(--pl-mono);
  font-size: .78rem;
  pointer-events: none;
}
.pl-chip-dot {
  width: 13px;
  height: 13px;
  flex: none;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .55);
}

/* ---- 설정 행 ---- */
.pl-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.pl-label {
  flex: none;
  font-size: .8rem;
  font-weight: 600;
  color: var(--color-text-sub);
}
input[type="range"].pl-range {
  flex: 1;
  min-width: 120px;
  max-width: 260px;
  accent-color: var(--color-primary);
}
.pl-value {
  font-family: var(--pl-mono);
  font-size: .82rem;
  min-width: 2.6em;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   팔레트 카드
   ============================================================ */
.pl-result {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}
.pl-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--space-3);
}
.pl-swatch { min-width: 0; }
.pl-color {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 100%;
  min-height: 76px;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font: inherit;
  text-align: left;
}
.pl-color:hover { border-color: var(--color-primary); }
.pl-color:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.pl-hex {
  font-family: var(--pl-mono);
  font-size: .84rem;
  font-weight: 600;
  letter-spacing: .02em;
}
.pl-share {
  font-family: var(--pl-mono);
  font-size: .72rem;
  opacity: .85;
  align-self: flex-end;
  font-variant-numeric: tabular-nums;
}
.pl-color.is-darkcolor { color: #f5f2ea; }
.pl-color.is-lightcolor { color: #26221c; }

.pl-meta {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-top: 5px;
}
.pl-code {
  font-family: var(--pl-mono);
  font-size: .72rem;
  color: var(--color-text-sub);
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  font-variant-numeric: tabular-nums;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
button.pl-code { cursor: pointer; }
button.pl-code:hover { color: var(--color-primary); }

/* ---- 스포이드로 찍은 색 ---- */
.pl-picked {
  border-top: 1px dashed var(--color-border);
  padding-top: var(--space-3);
}
.pl-picked-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.pl-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.pl-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 10px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface);
  cursor: pointer;
  font-family: var(--pl-mono);
  font-size: .78rem;
  color: var(--color-text);
}
.pl-chip:hover { border-color: var(--color-primary); }
.pl-chip .pl-chip-dot { border-color: var(--color-border); }
.pl-chip-x {
  color: var(--color-text-sub);
  padding-left: 2px;
  font-size: .9rem;
  line-height: 1;
}
.pl-chip-x:hover { color: var(--color-primary); }

/* ---- 내보내기 버튼 줄 ---- */
.pl-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.pl-btn-sm { padding: 4px 11px; font-size: .78rem; }

/* ---- 설명/FAQ 본문 (다른 도구와 동일 톤) ---- */
.prose { margin-top: var(--space-6); }
.prose h2 { margin-bottom: var(--space-3); }
.prose h3 { margin: var(--space-4) 0 var(--space-2); font-size: 1.05rem; }
.prose p, .prose li { color: var(--color-text); }
.prose em { color: var(--color-primary); font-style: normal; font-weight: 600; }
.prose ol, .prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: var(--space-2); }
.prose details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  margin-bottom: var(--space-2);
  background: var(--color-surface);
}
.prose summary { cursor: pointer; font-weight: 600; }
.prose details[open] summary { margin-bottom: var(--space-2); }
.prose details p { margin: 0 0 var(--space-2); color: var(--color-text-sub); }
.prose details p:last-child { margin-bottom: 0; }