:root {
  --teal-950: #072e2b;
  --teal-900: #0b4a44;
  --teal-800: #0f5f57;
  --teal-700: #14776c;
  --teal-500: #1f9c8d;
  --teal-100: #dff3f0;
  --orange-500: #f2994a;
  --orange-600: #e08333;
  --cream: #faf7f1;
  --paper: #ffffff;
  --ink-900: #1c2523;
  --ink-700: #45534f;
  --ink-500: #6b7a76;
  --line: #e6e1d6;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(7, 46, 43, 0.08);
  --shadow-lg: 0 16px 40px rgba(7, 46, 43, 0.14);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  background: var(--cream);
  color: var(--ink-900);
  line-height: 1.6;
}

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

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--teal-950);
  color: #fff;
  box-shadow: var(--shadow);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.2px;
  color: #fff;
}

.brand .dot { color: var(--orange-500); }

.brand small {
  display: block;
  font-weight: 400;
  font-size: 0.68rem;
  color: #c9e6e1;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 22px;
  font-size: 0.92rem;
  font-weight: 500;
}

.site-nav a {
  color: #d7ece8;
  opacity: 0.9;
  transition: opacity 0.15s, color 0.15s;
  white-space: nowrap;
}

.site-nav a:hover { opacity: 1; color: var(--orange-500); }

.site-nav a.active { color: var(--orange-500); opacity: 1; }

/* Hero */
.hero {
  background:
    radial-gradient(1200px 400px at 15% -20%, rgba(242, 153, 74, 0.25), transparent 60%),
    linear-gradient(160deg, var(--teal-900), var(--teal-700));
  color: #fff;
  padding: 64px 0 48px;
}

.hero h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  margin: 0 0 12px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.hero p.tagline {
  margin: 0 0 28px;
  color: #d7ece8;
  font-size: 1.05rem;
  max-width: 640px;
}

.search-box {
  max-width: 560px;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 14px 18px 14px 46px;
  border-radius: 999px;
  border: none;
  font-size: 0.98rem;
  outline: none;
  box-shadow: var(--shadow-lg);
}

.search-box svg {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--ink-500);
}

.stats-row {
  display: flex;
  gap: 28px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.stat {
  color: #fff;
}

.stat b { font-size: 1.5rem; display: block; color: var(--orange-500); }
.stat span { font-size: 0.8rem; color: #cfe6e1; text-transform: uppercase; letter-spacing: 0.4px; }

/* Category filter chips */
.filter-bar {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 61px;
  z-index: 40;
}

.chip-row {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 14px 0;
  scrollbar-width: thin;
}

.chip-row::-webkit-scrollbar { height: 5px; }
.chip-row::-webkit-scrollbar-thumb { background: var(--line); border-radius: 10px; }

.chip {
  flex: none;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--teal-100);
  color: var(--teal-900);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s, color 0.15s, transform 0.1s;
  white-space: nowrap;
}

.chip:hover { transform: translateY(-1px); }

.chip.active {
  background: var(--teal-900);
  color: #fff;
}

/* Main / grid */
main { padding: 40px 0 80px; }

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 22px;
}

.section-heading h2 { margin: 0; font-size: 1.4rem; }
.section-heading span { color: var(--ink-500); font-size: 0.9rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 26px;
}

.card {
  background: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
  border: 1px solid var(--line);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-thumb {
  aspect-ratio: 16 / 10;
  width: 100%;
  overflow: hidden;
  background: linear-gradient(135deg, var(--teal-700), var(--orange-500));
  position: relative;
}

.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-thumb .fallback-initial {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  font-weight: 800;
  color: rgba(255,255,255,0.85);
}

.card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.card-cats {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--teal-100);
  color: var(--teal-800);
}

.card h3 {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.35;
  color: var(--ink-900);
}

.card p.excerpt {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-700);
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  color: var(--ink-500);
  border-top: 1px dashed var(--line);
  padding-top: 10px;
  margin-top: auto;
}

.no-results, .empty {
  text-align: center;
  color: var(--ink-500);
  padding: 60px 20px;
  font-size: 1rem;
}

.load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--teal-900);
  color: #fff;
  border: none;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn:hover { background: var(--orange-600); transform: translateY(-1px); }
.btn:disabled { opacity: 0.5; cursor: default; transform: none; }

/* Footer */
.site-footer {
  background: var(--teal-950);
  color: #cfe6e1;
  padding: 40px 0 26px;
  margin-top: 40px;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  align-items: center;
}

.site-footer .brand { color: #fff; }
.site-footer small { color: #96b8b2; }

/* Post page */
.post-hero {
  background: linear-gradient(160deg, var(--teal-900), var(--teal-700));
  color: #fff;
  padding: 44px 0 40px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #d7ece8;
  font-size: 0.88rem;
  margin-bottom: 18px;
  font-weight: 600;
}

.back-link:hover { color: var(--orange-500); }

.post-hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  line-height: 1.25;
  font-weight: 800;
  max-width: 820px;
}

.post-meta-row {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  align-items: center;
  color: #cfe6e1;
  font-size: 0.9rem;
}

.post-meta-row .cats { display: flex; gap: 6px; flex-wrap: wrap; }

.post-wrap {
  max-width: 800px;
  margin: -30px auto 0;
  background: var(--paper);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  position: relative;
}

.post-thumb {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 28px;
  max-height: 420px;
  object-fit: cover;
}

.post-content {
  font-size: 1.02rem;
  color: var(--ink-900);
}

.post-content p { margin: 0 0 18px; }
.post-content h1, .post-content h2, .post-content h3, .post-content h4 {
  margin: 34px 0 14px;
  line-height: 1.35;
  color: var(--teal-950);
}
.post-content img { border-radius: 10px; margin: 18px 0; }
.post-content ul, .post-content ol { margin: 0 0 18px; padding-left: 24px; }
.post-content li { margin-bottom: 6px; }
.post-content blockquote {
  margin: 24px 0;
  padding: 4px 24px;
  border-left: 4px solid var(--orange-500);
  color: var(--ink-700);
  font-style: italic;
  background: var(--teal-100);
  border-radius: 0 8px 8px 0;
  padding-top: 14px;
  padding-bottom: 14px;
}
.post-content a { color: var(--teal-700); text-decoration: underline; }
.post-content iframe { max-width: 100%; }
.post-content figure { margin: 18px 0; }
.post-content figcaption { font-size: 0.85rem; color: var(--ink-500); text-align: center; margin-top: 6px; }
.post-content table { width: 100%; border-collapse: collapse; margin: 0 0 18px; }
.post-content table td, .post-content table th { border: 1px solid var(--line); padding: 8px 10px; }

.post-footer-nav {
  max-width: 800px;
  margin: 32px auto 0;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.post-footer-nav a.btn { background: var(--teal-800); }

@media (max-width: 720px) {
  .site-nav { display: none; }
  .post-wrap { padding: 26px; margin-top: -20px; }
  .filter-bar { top: 57px; }
}