/**
 * common.css — 디자인 토큰 + 허브·생성기 공통 UI
 * ① :root / html[data-theme="light"] — 색·타이포·간격 등 CSS 변수(구 variables.css)
 * ② 아래 섹션 — 토큰을 쓰는 공통 컴포넌트 규칙
 */

/* ========== ① 디자인 토큰 ========== */

:root {
  /* 배경 그라데이션 조각 */
  --bg-blob-1: rgba(124, 158, 255, 0.18);
  --bg-blob-2: rgba(94, 234, 212, 0.08);
  --bg-blob-3: rgba(251, 113, 133, 0.06);

  /* 색상 — 다크 글래스 UI */
  --color-bg-deep: #0a0e17;
  --color-bg-mid: #121a2b;
  --color-surface: rgba(255, 255, 255, 0.06);
  --color-surface-hover: rgba(255, 255, 255, 0.1);
  --color-border-subtle: rgba(255, 255, 255, 0.12);
  --color-border-strong: rgba(255, 255, 255, 0.22);
  --color-text-primary: #f0f4fc;
  --color-text-secondary: rgba(240, 244, 252, 0.72);
  --color-text-muted: rgba(240, 244, 252, 0.48);
  --color-accent: #7c9eff;
  --color-accent-soft: rgba(124, 158, 255, 0.35);
  --color-success: #5eead4;
  --color-danger: #fb7185;
  --color-on-accent: #0a0e17;
  --color-input-bg: rgba(0, 0, 0, 0.25);
  --color-code-bg: rgba(0, 0, 0, 0.35);
  --color-code-bar: rgba(0, 0, 0, 0.2);
  --preview-label-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);

  /* 생성기 → 쇼케이스 실시간 연동 (index.js가 갱신) */
  --live-glass-blur: 16px;
  --live-glass-opacity: 0.2;
  --live-glass-r: 255;
  --live-glass-g: 255;
  --live-glass-b: 255;
  --live-glass-border-w: 1px;
  --live-glass-radius: 20px;
  --live-glass-shadow-y: 24px;
  --live-glass-shadow-spread: 48px;

  --header-bg: rgba(10, 14, 23, 0.65);
  --header-nav-mobile-bg: rgba(10, 14, 23, 0.92);

  /* 타이포그래피 */
  --font-sans: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;
  --text-xs: clamp(0.75rem, 0.7rem + 0.2vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.78rem + 0.2vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.25vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.35vw, 1.125rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.375rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 0.85vw, 1.75rem);
  --text-3xl: clamp(1.75rem, 1.4rem + 1.2vw, 2.25rem);
  --leading-tight: 1.25;
  --leading-normal: 1.55;
  --tracking-tight: -0.02em;

  /* 간격 (4px 그리드) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* 반경 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* 그림자 */
  --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-inner-glow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  --shadow-preset-hover: 0 12px 40px rgba(0, 0, 0, 0.4);

  /* 전환 */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 150ms;
  --duration-normal: 220ms;

  /* 레이아웃 */
  --header-height: 64px;
  --content-max: 1200px;
  --safe-inline: max(1.25rem, env(safe-area-inset-left, 0px));
}

html[data-theme="light"] {
  --bg-blob-1: rgba(79, 110, 217, 0.2);
  --bg-blob-2: rgba(20, 184, 166, 0.12);
  --bg-blob-3: rgba(244, 114, 182, 0.1);

  --color-bg-deep: #e8edf7;
  --color-bg-mid: #dce4f2;
  --color-surface: rgba(255, 255, 255, 0.55);
  --color-surface-hover: rgba(255, 255, 255, 0.78);
  --color-border-subtle: rgba(15, 23, 42, 0.1);
  --color-border-strong: rgba(15, 23, 42, 0.18);
  --color-text-primary: #0f172a;
  --color-text-secondary: rgba(15, 23, 42, 0.68);
  --color-text-muted: rgba(15, 23, 42, 0.45);
  --color-accent: #4f6ed9;
  --color-accent-soft: rgba(79, 110, 217, 0.22);
  --color-success: #0d9488;
  --color-danger: #e11d48;
  --color-on-accent: #f8fafc;
  --color-input-bg: rgba(255, 255, 255, 0.85);
  --color-code-bg: rgba(15, 23, 42, 0.06);
  --color-code-bar: rgba(15, 23, 42, 0.04);
  --preview-label-shadow: 0 1px 3px rgba(15, 23, 42, 0.15);

  --header-bg: rgba(255, 255, 255, 0.72);
  --header-nav-mobile-bg: rgba(248, 250, 252, 0.94);

  --shadow-glass: 0 8px 32px rgba(15, 23, 42, 0.12);
  --shadow-inner-glow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  --shadow-preset-hover: 0 12px 36px rgba(15, 23, 42, 0.15);
}

/* ========== ② 공통 컴포넌트 ========== */

/* ——— 생성기 셸 ——— */

.generator {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .generator {
    grid-template-columns: minmax(280px, 360px) 1fr;
    align-items: start;
  }
}

.generator__panel {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
  padding: var(--space-6);
}

.generator__panel-title {
  margin: 0 0 var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

.generator__save-row {
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
}

.btn--block {
  width: 100%;
}

.control-group {
  margin-bottom: var(--space-5);
}

.control-group:last-child {
  margin-bottom: 0;
}

.control-group label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.control-group output,
.control-group .value {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent);
}

.control-group input[type="range"] {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--color-bg-mid);
  accent-color: var(--color-accent);
  cursor: pointer;
}

.control-group input[type="color"] {
  width: 100%;
  height: 40px;
  padding: var(--space-1);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-bg-mid);
  cursor: pointer;
}

.control-group input[type="text"] {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-input-bg);
  color: var(--color-text-primary);
  transition: background 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.control-group input[type="text"]::placeholder {
  color: var(--color-text-muted);
}

.generator__preview-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* ——— 프리셋 툴바 · 그리드 ——— */

.presets-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.presets-filter__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.presets-filter__btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}

.presets-filter__btn.is-active {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.presets-empty {
  margin: 0;
  padding: var(--space-8);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  border-radius: var(--radius-xl);
  border: 1px dashed var(--color-border-subtle);
  background: var(--color-surface);
}

.presets-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 640px) {
  .presets-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .presets-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1280px) {
  .presets-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.preset-card {
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.preset-card:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-preset-hover);
}

.preset-card:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.preset-card__preview {
  position: relative;
  height: 140px;
  overflow: hidden;
  background: var(--color-bg-mid);
  background-image: linear-gradient(145deg, rgba(255, 255, 255, 0.05), transparent);
}

.preset-card__preview::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 30%, rgba(236, 72, 153, 0.35), transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(16, 185, 129, 0.3), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(124, 58, 237, 0.22), transparent 50%);
  pointer-events: none;
}

.preset-card__glass {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 72%;
  height: 56px;
  pointer-events: none;
}

.preset-card__glass::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.35) 0%,
    rgba(255, 255, 255, 0.08) 40%,
    transparent 58%
  );
  pointer-events: none;
  z-index: 1;
}

.preset-card__body {
  padding: var(--space-5);
}

.preset-card__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
}

.preset-card__desc {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

.preset-card--my {
  position: relative;
  display: flex;
  flex-direction: column;
  cursor: default;
}

.preset-card__main {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  cursor: pointer;
  text-align: left;
  border: none;
  background: transparent;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  border-radius: 0;
}

.preset-card__main:focus {
  outline: none;
}

.preset-card__main:focus-visible {
  box-shadow: inset 0 0 0 2px var(--color-accent);
  border-radius: var(--radius-xl);
}

.preset-card__delete {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  z-index: 5;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-bg-mid);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    color var(--duration-fast) var(--ease-out),
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.preset-card__delete:hover {
  color: var(--color-danger);
  border-color: rgba(251, 113, 133, 0.55);
  background: var(--color-surface-hover);
}

.preset-card__delete:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.preset-card__delete:active {
  transform: scale(0.97);
}

/* ——— 코드 출력 · 버튼 ——— */

.code-block {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-code-bg);
  overflow: hidden;
  transition: background 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.code-block pre {
  margin: 0;
  padding: var(--space-5);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
}

.code-block__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-subtle);
  background: var(--color-code-bar);
  transition: background 0.25s var(--ease-out);
}

.code-block__actions .btn {
  flex-shrink: 0;
  white-space: nowrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: var(--leading-tight);
  font-weight: 600;
  border: 1px solid transparent;
  transition:
    background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.btn:active {
  transform: scale(0.98);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent), #5b7fd9);
  color: var(--color-on-accent);
  border-color: rgba(255, 255, 255, 0.2);
}

html[data-theme="light"] .btn--primary {
  background: linear-gradient(135deg, var(--color-accent), #3d5a99);
  border-color: rgba(15, 23, 42, 0.12);
}

.btn--primary:hover {
  filter: brightness(1.08);
}

.btn--ghost {
  background: var(--color-surface);
  color: var(--color-text-primary);
  border-color: var(--color-border-subtle);
}

.btn--ghost:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-border-strong);
}

/* 반응형 줄바꿈 유틸: 작은 화면에서만 강제 줄바꿈 */
.u-br--sm {
  display: block;
}

@media (min-width: 640px) {
  .u-br--sm {
    display: none;
  }
}

/* 팔레트 스와치 행: 텍스트 블록이 공간을 차지하고 복사 버튼이 압축되며 글자가 세로로 쌓이는 것 방지 */
.pal-swatch__body > div:first-child {
  min-width: 0;
  flex: 1 1 auto;
}

.pal-cta {
  flex-shrink: 0;
  white-space: nowrap;
}

/* ——— SEO 문서 블록(서브페이지 하단) ——— */

.seo-wrap {
  /* padding: 0 var(--safe-inline) var(--space-16); */
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
}

.seo-doc {
  margin-top: var(--space-10);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-glass);
  padding: var(--space-8);
}

.seo-doc h1 {
  margin: 0 0 var(--space-4);
  font-size: var(--text-2xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.seo-doc h2 {
  margin: var(--space-10) 0 var(--space-4);
  font-size: var(--text-xl);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.seo-doc h3 {
  margin: var(--space-8) 0 var(--space-3);
  font-size: var(--text-lg);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.seo-doc p {
  margin: 0 0 var(--space-4);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

.seo-doc p strong {
  color: var(--color-text-primary);
}

.seo-doc a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.seo-doc ul,
.seo-doc ol {
  margin: 0 0 var(--space-5);
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}

.seo-doc li + li {
  margin-top: var(--space-2);
}

.seo-toc {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
  background: color-mix(in oklab, var(--color-surface) 78%, transparent);
  padding: var(--space-6);
  margin: var(--space-6) 0 var(--space-8);
}

.seo-toc__title {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.seo-note {
  border-left: 3px solid var(--color-accent);
  padding: var(--space-4) var(--space-5);
  background: color-mix(in oklab, var(--color-surface) 74%, transparent);
  border-radius: var(--radius-lg);
  margin: var(--space-6) 0 var(--space-8);
}