/* === Open Skill Diary — Stylesheet ============================ */

:root {
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Pretendard", "Noto Sans KR", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Consolas, Menlo, monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 32px rgba(0,0,0,0.12);
  --transition: 200ms cubic-bezier(.4,0,.2,1);
}

/* Light theme (default fallback) */
:root,
:root[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-elevated: #ffffff;
  --bg-soft: #eef1f6;
  --text: #1a2332;
  --text-muted: #5b6878;
  --text-subtle: #8a96a6;
  --border: #e3e8ef;
  --border-strong: #cdd5e0;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-soft: rgba(59, 130, 246, 0.12);
  --tag-bg: #eef4ff;
  --tag-text: #2563eb;
  --shadow-card: 0 1px 3px rgba(20,30,50,0.04), 0 4px 16px rgba(20,30,50,0.06);
  --shadow-hover: 0 6px 24px rgba(20,30,50,0.10);
}

:root[data-theme="dark"] {
  --bg: #0c1220;
  --bg-elevated: #131b2e;
  --bg-soft: #1a2338;
  --text: #e8eef9;
  --text-muted: #95a3b8;
  --text-subtle: #6b7a91;
  --border: #1f2940;
  --border-strong: #2c3856;
  --accent: #6ba6ff;
  --accent-hover: #8fbeff;
  --accent-soft: rgba(107, 166, 255, 0.15);
  --tag-bg: rgba(107, 166, 255, 0.12);
  --tag-text: #8fbeff;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.3), 0 4px 16px rgba(0,0,0,0.25);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.4);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: inherit; text-decoration: none; }

/* === Site Header =========================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 16px;
  letter-spacing: -0.3px;
}
.site-brand__logo {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  background: var(--accent); color: #fff;
  border-radius: 8px;
  font-size: 14px;
}
.site-nav {
  display: flex; align-items: center; gap: 20px;
}
.site-nav a {
  font-size: 14px; font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.site-nav a:hover { color: var(--text); }

.theme-toggle {
  position: relative;
  width: 38px; height: 38px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  border-radius: 50%;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  color: var(--text);
}
.theme-toggle:hover {
  border-color: var(--accent);
  transform: scale(1.05);
}
.theme-toggle__icon {
  position: absolute;
  font-size: 16px;
  transition: opacity var(--transition), transform var(--transition);
}
:root[data-theme="dark"] .theme-toggle__icon--sun { opacity: 1; transform: rotate(0); }
:root[data-theme="dark"] .theme-toggle__icon--moon { opacity: 0; transform: rotate(-90deg); }
:root[data-theme="light"] .theme-toggle__icon--sun { opacity: 0; transform: rotate(90deg); }
:root[data-theme="light"] .theme-toggle__icon--moon { opacity: 1; transform: rotate(0); }

/* === Hero ================================================== */
.hero {
  background:
    radial-gradient(ellipse 60% 80% at 50% 0%, var(--accent-soft) 0%, transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 88px 24px 64px;
  text-align: center;
}
.hero__eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero__title {
  font-size: clamp(28px, 5vw, 46px);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 18px;
}
.hero__lede {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto 32px;
}
.hero__categories {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.hero__category {
  padding: 8px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.hero__category:hover,
.hero__category.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* === Posts ================================================= */
.posts {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 24px;
  width: 100%;
}
.posts__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}
.posts__title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.posts__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.posts__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.post-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  box-shadow: var(--shadow-card);
}
.post-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
  box-shadow: var(--shadow-hover);
}
.post-card__thumb {
  height: 160px;
  background: linear-gradient(135deg, var(--accent) 0%, color-mix(in srgb, var(--accent) 60%, #9333ea) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.post-card__thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.08) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.08) 0 1px, transparent 1px 24px);
  opacity: 0.6;
}
.post-card__thumb-icon {
  position: relative;
  font-size: 48px;
  font-weight: 800;
  color: rgba(255,255,255,0.95);
  letter-spacing: -2px;
  font-family: var(--font-mono);
}
.post-card__body {
  padding: 22px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}
.post-card__meta {
  display: flex; align-items: center; gap: 10px;
  font-size: 12px;
  color: var(--text-subtle);
}
.post-card__category {
  display: inline-block;
  padding: 3px 10px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.post-card__title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
  line-height: 1.4;
  color: var(--text);
}
.post-card__summary {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
  padding-top: 6px;
}
.post-card__tag {
  font-size: 11px;
  color: var(--text-subtle);
  padding: 2px 8px;
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
}

/* === About ================================================= */
.about {
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about__inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px 24px;
  text-align: center;
}
.about h2 {
  font-size: 22px;
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}
.about p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* === Site Footer =========================================== */
.site-footer {
  margin-top: auto;
  padding: 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-subtle);
  border-top: 1px solid var(--border);
}
.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* === Post page (full-width simulator embed) ================ */
.post-page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--bg);
}
.post-page__header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.post-page__header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.post-page__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.post-page__back:hover {
  background: var(--bg-soft);
  color: var(--text);
}
.post-page__title-wrap { flex: 1; min-width: 0; }
.post-page__category {
  display: inline-block;
  padding: 2px 8px;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.post-page__title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.post-page__main {
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
}
.post-page__frame-wrap {
  flex: 1;
  width: 100%;
  background: var(--bg-soft);
}
.post-page__frame {
  width: 100%;
  height: calc(100vh - 64px);
  border: 0;
  display: block;
}

/* === Responsive ============================================ */
@media (max-width: 720px) {
  .site-header__inner { padding: 12px 16px; }
  .site-nav { gap: 12px; }
  .site-nav a { display: none; }
  .hero__inner { padding: 56px 20px 40px; }
  .posts { padding: 40px 16px; }
  .posts__list { grid-template-columns: 1fr; }
}

/* ============================================================
 * /hams:remind addon — 헤더 검색 / 페이저 / hero 트림 / 카테고리 숨김
 * ============================================================ */

.osd-search-wrap { display: inline-flex; align-items: center; position: relative; }
#osd-search-input {
  appearance: none;
  -webkit-appearance: none;
  width: 200px;
  padding: 7px 12px;
  font: 500 13.5px/1.2 var(--font-sans);
  color: var(--text);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  outline: none;
  transition: border var(--transition), background var(--transition), width var(--transition);
}
#osd-search-input::placeholder { color: var(--text-subtle); }
#osd-search-input:focus {
  border-color: var(--accent);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 3px var(--accent-soft);
  width: 240px;
}
@media (max-width: 720px) {
  #osd-search-input { width: 130px; }
  #osd-search-input:focus { width: 160px; }
}

/* Hero 트림 — 한 줄, 위아래 여백 축소 */
.hero { padding: 28px 24px 18px !important; }
.hero__inner { max-width: 1200px; margin: 0 auto; }
.hero__eyebrow {
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.hero__title {
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.25;
  margin: 0 0 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hero__lede {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text-muted);
  max-width: 1100px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}
/* Posts 섹션 — 위아래 여백 축소 */
.posts { padding: 18px 24px 28px !important; }
.posts__header { margin-bottom: 14px !important; }

/* 페이저 */
.posts__pager {
  display: flex;
  justify-content: center;
  gap: 6px;
  padding: 18px 0 4px;
  flex-wrap: wrap;
}
.posts__pager button {
  min-width: 32px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  border-radius: 6px;
  font: 500 13px var(--font-sans);
  cursor: pointer;
  transition: background var(--transition), border var(--transition), color var(--transition);
}
.posts__pager button:hover { border-color: var(--accent); color: var(--accent); }
.posts__pager button.is-active { background: var(--accent); border-color: var(--accent); color: #fff; }
.posts__pager button:disabled { opacity: 0.4; cursor: not-allowed; color: var(--text-subtle); }

/* hams:remind addon v2 — hero padding 추가 축소, line gap 보존 */
.hero { padding: 14px 24px 12px !important; }
.hero__eyebrow { margin-bottom: 6px !important; }
.hero__title   { margin: 0 0 6px !important; }
.hero__lede    { margin: 0 !important; }

/* hams:remind addon v3 — hero__inner padding 잡기 + 텍스트 line gap 회복 */
.hero { padding: 0 !important; }
.hero__inner { padding: 16px 24px 16px !important; }
.hero__eyebrow { margin-bottom: 14px !important; }
.hero__title   { margin: 0 0 12px !important; }
.hero__lede    { margin: 0 !important; }

/* hams:remind addon v4 — hero padding 50/24/50 */
.hero__inner { padding: 50px 24px !important; }

/* hams:remind addon v5 — 카드 높이 일관화 (제목 2줄 reserve + 카드 그리드 stretch) */
.posts__list { align-items: stretch; }
.posts__list > li { display: flex; }
.post-card { width: 100%; }
.post-card__title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(2 * 1.4em);
}