/* ===== ARTHOMA Blog – Main Stylesheet ===== */

:root {
  --bg: #f9f7f4;
  --bg2: #ffffff;
  --fg: #1a1a1a;
  --fg2: #555555;
  --fg3: #888888;
  --accent: #c8622e;
  --accent-hover: #a84e22;
  --border: #e5e0d8;
  --tag-bg: #f0ebe3;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans: 'Inter', 'Segoe UI', system-ui, sans-serif;
  --max-w: 1100px;
  --radius: 8px;
  --shadow: 0 2px 16px rgba(0,0,0,0.07);
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg: #131211;
  --bg2: #1e1c1a;
  --fg: #f0ece6;
  --fg2: #b0a89e;
  --fg3: #736b62;
  --accent: #e0814e;
  --accent-hover: #c8622e;
  --border: #2e2b27;
  --tag-bg: #2a2722;
  --shadow: 0 2px 16px rgba(0,0,0,0.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.65;
  transition: background var(--transition), color var(--transition);
}

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

img { max-width: 100%; height: auto; display: block; }

/* ===== HEADER ===== */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--fg);
}

.logo span { color: var(--accent); }

nav { display: flex; align-items: center; gap: 28px; }

nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg2);
  transition: color var(--transition);
}

nav a:hover, nav a.active { color: var(--accent); }

.header-actions { display: flex; align-items: center; gap: 12px; }

/* Search */
.search-wrap {
  position: relative;
}
#search-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px 6px 34px;
  font-size: 0.85rem;
  color: var(--fg);
  width: 180px;
  transition: border-color var(--transition), width var(--transition);
  outline: none;
}
#search-input:focus {
  border-color: var(--accent);
  width: 220px;
}
#search-input::placeholder { color: var(--fg3); }
.search-icon {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--fg3);
  pointer-events: none;
}

/* Theme toggle */
#theme-toggle {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--fg2);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  flex-shrink: 0;
}
#theme-toggle:hover { border-color: var(--accent); color: var(--accent); }

/* Mobile menu */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--fg);
  padding: 4px;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  background: var(--bg2) url('../images/hero-bg.jpg.webp') center center / cover no-repeat;
  border-bottom: 1px solid var(--border);
  padding: 72px 24px 60px;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.45) 100%);
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero .hero-eyebrow { color: #f4a261; }
.hero h1 { color: #ffffff; }
.hero p { color: #ffffff; text-shadow: 0 1px 6px rgba(0,0,0,0.6); font-weight: 600; }

.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fg);
  max-width: 640px;
  margin: 0 auto 20px;
}

.hero p {
  font-size: 1.05rem;
  color: var(--fg2);
  max-width: 520px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 12px 26px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition), transform var(--transition);
}
.hero-cta:hover { background: var(--accent-hover); transform: translateY(-1px); }

/* ===== MAIN LAYOUT ===== */
.main-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 24px;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 56px;
  align-items: start;
}

/* ===== SECTION HEADING ===== */
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.section-head h2 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--fg);
}

.section-head a {
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
}
.section-head a:hover { text-decoration: underline; }

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg2);
  color: var(--fg2);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* ===== FEATURED POST ===== */
.featured-post {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  transition: box-shadow var(--transition);
}
.featured-post:hover { box-shadow: var(--shadow); }

.featured-post .post-img {
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  width: 100%;
}

.featured-post-body {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.post-tag {
  display: inline-block;
  background: var(--tag-bg);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.featured-post-body h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--fg);
  margin-bottom: 12px;
}

.featured-post-body p {
  color: var(--fg2);
  font-size: 0.93rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--fg3);
}

.post-meta .dot { opacity: 0.4; }

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 20px;
  transition: gap var(--transition);
}
.read-more:hover { gap: 10px; }

/* ===== POST GRID ===== */
.post-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.post-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.post-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }

.post-card .post-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.post-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--fg);
  margin: 8px 0;
}

.post-card-body p {
  font-size: 0.85rem;
  color: var(--fg2);
  line-height: 1.65;
  flex: 1;
}

.post-card-body .post-meta { margin-top: 14px; }

/* ===== SIDEBAR ===== */
.sidebar { display: flex; flex-direction: column; gap: 36px; }

.sidebar-widget {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.widget-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* Newsletter */
.newsletter-text {
  font-size: 0.85rem;
  color: var(--fg2);
  margin-bottom: 16px;
  line-height: 1.6;
}

.newsletter-form { display: flex; flex-direction: column; gap: 10px; }

.newsletter-form input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--fg);
  outline: none;
  transition: border-color var(--transition);
}
.newsletter-form input:focus { border-color: var(--accent); }
.newsletter-form input::placeholder { color: var(--fg3); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 10px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.btn-primary:hover { background: var(--accent-hover); }

/* Categories */
.category-list { list-style: none; }
.category-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--fg2);
  cursor: pointer;
  transition: color var(--transition);
}
.category-list li:last-child { border-bottom: none; }
.category-list li:hover { color: var(--accent); }
.category-list .count {
  background: var(--tag-bg);
  color: var(--fg3);
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 12px;
}

/* Recent posts */
.recent-post {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}
.recent-post:last-child { border-bottom: none; padding-bottom: 0; }
.recent-post:first-child { padding-top: 0; }

.recent-post img {
  width: 64px;
  height: 52px;
  border-radius: 5px;
  object-fit: cover;
  flex-shrink: 0;
}

.recent-post-info h4 {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1.35;
  margin-bottom: 4px;
  transition: color var(--transition);
}
.recent-post:hover .recent-post-info h4 { color: var(--accent); }

.recent-post-info span {
  font-size: 0.75rem;
  color: var(--fg3);
}

/* Tags cloud */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  background: var(--tag-bg);
  color: var(--fg2);
  font-size: 0.78rem;
  padding: 5px 12px;
  border-radius: 20px;
  transition: background var(--transition), color var(--transition);
}
.tag-cloud a:hover { background: var(--accent); color: #fff; }

/* ===== SEARCH RESULTS OVERLAY ===== */
#search-results {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 320px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 200;
  overflow: hidden;
  display: none;
}
#search-results.open { display: block; }
.search-result-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover { background: var(--bg); }
.search-result-item h4 { font-size: 0.88rem; font-weight: 600; color: var(--fg); }
.search-result-item span { font-size: 0.77rem; color: var(--fg3); }
.no-results { padding: 16px; text-align: center; color: var(--fg3); font-size: 0.85rem; }

/* ===== SINGLE POST PAGE ===== */
.post-page-wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fg3);
  font-size: 0.85rem;
  margin-bottom: 32px;
  transition: color var(--transition);
}
.back-link:hover { color: var(--accent); }

.post-header { margin-bottom: 36px; }
.post-header .post-tag { margin-bottom: 14px; }
.post-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.25;
  color: var(--fg);
  margin-bottom: 16px;
}
.post-header .post-meta { margin-bottom: 24px; }

.post-hero-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 44px;
}

.post-body {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  line-height: 1.85;
  color: var(--fg);
}

.post-body p { margin-bottom: 1.4em; }
.post-body h2 {
  font-size: 1.5rem;
  margin: 2em 0 0.7em;
  line-height: 1.3;
}
.post-body h3 {
  font-size: 1.2rem;
  margin: 1.6em 0 0.6em;
  line-height: 1.3;
}
.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 4px 0 4px 24px;
  margin: 2em 0;
  color: var(--fg2);
  font-style: italic;
}
.post-body ul, .post-body ol {
  padding-left: 1.4em;
  margin-bottom: 1.4em;
}
.post-body li { margin-bottom: 0.4em; }

.post-footer {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.author-card {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 { font-size: 0.92rem; font-weight: 600; color: var(--fg); }
.author-info span { font-size: 0.8rem; color: var(--fg3); }

.share-btns { display: flex; align-items: center; gap: 8px; }
.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--fg2);
  cursor: pointer;
  background: none;
  transition: border-color var(--transition), color var(--transition);
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); }

/* Related posts */
.related-posts { margin-top: 64px; }
.related-posts h2 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ===== ABOUT PAGE ===== */
.about-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.about-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 72px;
}

.about-hero img {
  border-radius: var(--radius);
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.about-hero-text h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  line-height: 1.2;
  color: var(--fg);
  margin-bottom: 20px;
}
.about-hero-text p {
  color: var(--fg2);
  font-size: 0.97rem;
  line-height: 1.75;
  margin-bottom: 14px;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.value-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
}

.value-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}

.value-card h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--fg);
  margin-bottom: 10px;
}

.value-card p {
  font-size: 0.85rem;
  color: var(--fg2);
  line-height: 1.65;
}

.team-section { margin-top: 72px; }
.team-section h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  color: var(--fg);
  margin-bottom: 32px;
  text-align: center;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.team-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
}

.team-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.team-card-body { padding: 20px; }
.team-card-body h3 { font-size: 1rem; font-weight: 700; color: var(--fg); }
.team-card-body .role { font-size: 0.8rem; color: var(--accent); margin: 4px 0 8px; }
.team-card-body p { font-size: 0.82rem; color: var(--fg2); line-height: 1.6; }

/* ===== FOOTER ===== */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 48px 24px 28px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo { font-size: 1.4rem; margin-bottom: 14px; }
.footer-brand p { font-size: 0.85rem; color: var(--fg2); line-height: 1.7; max-width: 260px; }

.footer-col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--fg3);
  margin-bottom: 14px;
}

.footer-col a {
  display: block;
  font-size: 0.87rem;
  color: var(--fg2);
  margin-bottom: 8px;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--fg3);
  flex-wrap: wrap;
  gap: 12px;
}

.social-links { display: flex; gap: 14px; }
.social-links a {
  color: var(--fg3);
  transition: color var(--transition);
}
.social-links a:hover { color: var(--accent); }

/* ===== TOAST ===== */
#toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--fg);
  color: var(--bg);
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 0.87rem;
  font-weight: 500;
  z-index: 9999;
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  white-space: nowrap;
}
#toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ===== MOBILE NAV ===== */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg2);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { font-size: 1.4rem; font-weight: 600; color: var(--fg); }
.mobile-nav a:hover { color: var(--accent); }
.mobile-nav-close {
  position: absolute;
  top: 18px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--fg);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .main-wrap {
    grid-template-columns: 1fr;
  }
  .sidebar { order: -1; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .about-hero { grid-template-columns: 1fr; }
  .about-hero img { height: 280px; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .header-inner { height: 56px; }
  nav { display: none; }
  #search-input { display: none; }
  .search-icon { display: none; }
  .menu-toggle { display: block; }
  .featured-post { grid-template-columns: 1fr; }
  .featured-post .post-img { min-height: 200px; }
  .post-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
  .post-footer { flex-direction: column; }
}