/* ===========================
   Design System — 기본 타이포그래피 + .prose 규칙
   변수는 design-tokens.css에서 정의
   컴포넌트는 components.css에서 정의
   =========================== */

/* ===========================
   1. Base Typography
   body 접두사로 Tailwind preflight를 이김 (specificity 0,0,2 > 0,0,1)
   =========================== */
body {
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 500;
  line-height: 145%;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
}

body h1, body h2, body h3,
body h4, body h5, body h6 {
  font-weight: 700;
  line-height: 117%;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
}

body h1 { font-size: 38px; }
body h2 { font-size: 28px; }
body h3 { font-size: 24px; }
body h4 { font-size: 20px; }
body h5 { font-size: 18px; }
body h6 { font-size: 16px; }

body strong, body b {
  font-weight: 700;
  color: var(--color-text-primary);
}

body em { font-style: italic; }
body s { text-decoration: line-through; }

/* ===========================
   2. .prose 콘텐츠 규칙 (블로그 본문)
   body .prose 접두사로 Tailwind utility 클래스를 이김 (specificity 0,1,1 > 0,1,0)
   =========================== */

/* 헤딩 간격 — padding으로 margin collapsing 방지 */
body .prose h1 { padding: 30px 0 6px; }
body .prose h2 { padding: 25px 0 6px; }
body .prose h3 { padding: 20px 0 6px; }


/* 본문/리스트 텍스트 */
body .prose p {
  font-size: 16px;
  font-weight: 500;
  line-height: 145%;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

body .prose li {
  font-size: 16px;
  font-weight: 500;
  line-height: 117%;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
}

/* 리스트 레이아웃 */
body .prose ul {
  list-style: disc;
  padding: 20px 0 20px 24px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

body .prose ol {
  list-style: decimal;
  padding: 20px 0 20px 24px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 링크 */
body .prose a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s ease;
}

body .prose a:hover {
  color: var(--color-link-hover);
  text-decoration-thickness: 2px;
}

/* 토글 */
body .prose details summary {
  font-size: 16px;
  font-weight: 500;
  line-height: 117%;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
  cursor: pointer;
}

body .prose details > *:not(summary) {
  margin-top: 5px;
}

/* ===========================
   3. UI 컴포넌트 클래스 (버튼, 카드, 뱃지 등)
   레이아웃/UI용. 블로그 콘텐츠와 무관.
   =========================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  font-family: var(--font-main);
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 4px;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-white);
}
.btn-primary:hover { background-color: var(--color-primary-hover); }

.btn-secondary {
  background-color: var(--color-primary-white);
  color: var(--color-text-primary);
  border-color: var(--color-border-default);
}
.btn-secondary:hover { background-color: var(--color-bg-secondary); }

.btn-black {
  background-color: var(--color-primary-black);
  color: var(--color-primary-white);
}
.btn-black:hover { background-color: #222222; }

/* Cards */
.card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-default);
  overflow: hidden;
}
.card-body { padding: 24px; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  border-radius: var(--radius-full);
}
.badge-primary { background-color: var(--color-primary); color: #FFF; }
.badge-success { background-color: var(--color-success); color: #FFF; }
.badge-warning { background-color: var(--color-warning); color: #000; }
.badge-error { background-color: var(--color-error); color: #FFF; }
.badge-info { background-color: var(--color-info); color: #FFF; }

/* Alerts */
.alert {
  padding: 16px;
  border-radius: 4px;
  font-size: 14px;
  line-height: 1.55;
}
.alert-success { background-color: rgba(7,208,118,0.1); color: var(--color-success); border: 1px solid rgba(7,208,118,0.2); }
.alert-warning { background-color: rgba(255,207,48,0.1); color: #b8860b; border: 1px solid rgba(255,207,48,0.2); }
.alert-error { background-color: rgba(239,60,60,0.1); color: var(--color-error); border: 1px solid rgba(239,60,60,0.2); }
.alert-info { background-color: rgba(13,141,246,0.1); color: var(--color-info); border: 1px solid rgba(13,141,246,0.2); }

/* Forms */
.form-control {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-main);
  font-size: 16px;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 2px solid var(--color-border-default);
  border-radius: 4px;
  transition: border-color var(--transition-base);
}
.form-control:focus { outline: none; border-color: var(--color-primary); }

.form-label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-text-primary);
}

/* Links */
.link {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}
.link:hover { color: var(--color-primary-hover); text-decoration: underline; }

/* Utility Classes */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-orange { color: var(--color-primary); }

.bg-primary { background-color: var(--color-bg-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-tertiary { background-color: var(--color-bg-tertiary); }

.uppercase { text-transform: uppercase; }
.font-extrabold { font-weight: 800; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

/* ===========================
   4. Layout
   =========================== */
.container {
  width: 100%;
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}
@media (min-width: 768px) {
  .container { padding: 0 48px; }
}

/* 모바일 헤딩 패딩 축소 */
@media (max-width: 767px) {
  body .prose h1 { padding: 20px 0 6px; }
  body .prose h2 { padding: 16px 0 6px; }
  body .prose h3 { padding: 12px 0 6px; }
}

/* Navigation */
.navbar {
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border-light);
  height: 73px;
}
.navbar-brand {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text-primary);
  text-decoration: none;
}
.navbar-link {
  font-size: 16px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: opacity var(--transition-base);
}
.navbar-link:hover { opacity: 0.7; }

/* Footer */
.footer {
  background-color: var(--color-bg-inverse);
  color: var(--color-text-inverse);
  padding: 64px 0;
}

/* ===========================
   5. Blog Specific
   =========================== */
.blog-title {
  font-size: 38px;
  font-weight: 700;
  line-height: 117%;
  letter-spacing: 0.01em;
  color: var(--color-text-primary);
}

.blog-meta {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  color: var(--color-text-secondary);
}

.blog-category {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  background-color: transparent;
  border-radius: var(--radius-full);
}

.blog-toc {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}
.blog-toc-title {
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
}
.blog-toc-link {
  font-size: 16px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}
.blog-toc-link:hover { color: var(--color-primary); }