/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Light mode (default) */
:root {
  --bg:      #ffffff;
  --surface: #f5f5f5;
  --border:  #e8e8e8;
  --text:    #111111;
  --muted:   #888888;
  --subtle:  #cccccc;
  --green:   #16a34a;
  --nav-bg:  rgba(255,255,255,0.92);
  --radius:    6px;
  --hero-tint: rgba(22, 163, 74, 0.05);

  --c-scripts:  #3b5fcc;
  --c-viz:      #9333ea;
  --c-automate: #16a34a;
  --c-general:  #b45309;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg:      #111111;
    --surface: #191919;
    --border:  #252525;
    --text:    #e4e4e4;
    --muted:   #5c5c5c;
    --subtle:  #2e2e2e;
    --green:     #4ade80;
    --nav-bg:    rgba(17,17,17,0.92);
    --hero-tint: rgba(74, 222, 128, 0.05);

    --c-scripts:  #7c9dff;
    --c-viz:      #c084fc;
    --c-automate: #4ade80;
    --c-general:  #facc15;
  }
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  background-image: radial-gradient(ellipse 120% 40% at 50% 0%, var(--hero-tint) 0%, transparent 70%);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

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

/* ===== PROGRESS BAR ===== */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: var(--green);
  z-index: 300;
  transition: width 0.08s linear;
}

/* ===== NAVBAR ===== */
nav {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 54px;
}

.nav-logo {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--green);
  letter-spacing: -0.3px;
}
.nav-logo span { color: var(--muted); font-weight: 400; }

.nav-links {
  display: flex;
  gap: 1.75rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  font-size: 0.875rem;
  transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }

.nav-icon-link { display: flex; align-items: center; }

/* ===== HERO ===== */
.hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 5rem 1.5rem 3.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green);
  margin-bottom: 1rem;
}

.hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}

.hero p {
  font-size: 1rem;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

/* ===== CONTAINER ===== */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}

/* ===== SECTION LABEL ===== */
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1rem;
}

/* ===== SEARCH ===== */
.search-wrap {
  padding: 1.75rem 0 1.25rem;
}

.search-field {
  position: relative;
}

.search-field svg {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

#search-input {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.65rem 1rem 0.65rem 2.5rem;
  color: var(--text);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.15s;
  outline: none;
}
#search-input::placeholder { color: var(--muted); }
#search-input:focus { border-color: var(--green); }

/* ===== CATEGORY PILLS ===== */
.categories-row {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding-bottom: 2rem;
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.3rem 0.85rem;
  font-size: 0.8rem;
  color: var(--muted);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  background: none;
  font-family: inherit;
}
.cat-pill:hover { border-color: var(--subtle); color: var(--text); }
.cat-pill.active { border-color: var(--green); color: var(--text); }

.pill-count {
  font-size: 0.7rem;
  color: var(--subtle);
  transition: color 0.15s;
}
.cat-pill.active .pill-count { color: var(--muted); }

/* ===== FEATURED POST ===== */
.featured-wrap {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.25rem;
}
.featured-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 1rem;
}
.featured-link {
  display: block;
}
.featured-link:hover .featured-title { color: var(--green); }

.featured-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}
.featured-date, .featured-read {
  font-size: 0.78rem;
  color: var(--muted);
}

.featured-title {
  font-size: clamp(1.15rem, 2.5vw, 1.55rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.2px;
  color: var(--text);
  margin-bottom: 0.5rem;
  transition: color 0.15s;
}

.featured-excerpt {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.6;
  max-width: 600px;
  margin-bottom: 1rem;
}

.featured-cta {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--green);
}

/* ===== TAG ===== */
.tag {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.tag.scripts  { color: var(--c-scripts); }
.tag.viz      { color: var(--c-viz); }
.tag.automate { color: var(--c-automate); }
.tag.general  { color: var(--c-general); }

/* ===== POST LIST ===== */
.posts-list {
  display: flex;
  flex-direction: column;
}

.post-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  padding: 1.2rem 0 1.2rem 1rem;
  border-bottom: 1px solid var(--border);
  border-left: 2px solid transparent;
  transition: border-left-color 0.15s, opacity 0.15s;
}
.post-item:first-child { border-top: 1px solid var(--border); }
.post-item:hover { opacity: 0.8; }

.post-item.cat-scripts:hover  { border-left-color: var(--c-scripts); }
.post-item.cat-viz:hover      { border-left-color: var(--c-viz); }
.post-item.cat-automate:hover { border-left-color: var(--c-automate); }
.post-item.cat-general:hover  { border-left-color: var(--c-general); }

.post-item-left  { display: flex; flex-direction: column; gap: 0.3rem; }
.post-item-right { display: flex; flex-direction: column; align-items: flex-end; gap: 0.2rem; padding-top: 0.1rem; }

.post-item-top {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-new {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--green);
  background: color-mix(in srgb, var(--green) 12%, transparent);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

.post-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}
.post-item h3 a { transition: color 0.15s; }
.post-item h3 a:hover { color: var(--green); }

.post-item .excerpt {
  font-size: 0.83rem;
  color: var(--muted);
  line-height: 1.5;
}

.post-item .date {
  font-size: 0.75rem;
  color: var(--subtle);
  white-space: nowrap;
}
.post-item .read-time {
  font-size: 0.72rem;
  color: var(--subtle);
  white-space: nowrap;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  padding: 3rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.empty-state strong { color: var(--text); }

/* ===== SINGLE POST ===== */
.post-layout {
  max-width: 680px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}

.post-header { margin-bottom: 2.5rem; }

.post-header .back {
  font-size: 0.825rem;
  color: var(--muted);
  display: inline-block;
  margin-bottom: 1.5rem;
  transition: color 0.15s;
}
.post-header .back:hover { color: var(--text); }

.post-title {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.3px;
  margin: 0.5rem 0 0.75rem;
}

.post-meta-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.8rem;
  flex-wrap: wrap;
}

/* ===== POST CONTENT ===== */
.post-content { font-size: 0.95rem; line-height: 1.85; }

.post-content h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2.25rem 0 0.6rem;
  color: var(--text);
}
.post-content h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.75rem 0 0.5rem;
  color: var(--text);
}
.post-content p { margin-bottom: 1rem; color: var(--text); }
.post-content ul, .post-content ol { margin: 0.5rem 0 1rem 1.25rem; }
.post-content li { margin-bottom: 0.35rem; }
.post-content strong { color: var(--green); font-weight: 600; }
.post-content em { color: var(--c-scripts); font-style: normal; }
.post-content img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

.post-content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  margin: 1.25rem 0;
  font-size: 0.835rem;
  line-height: 1.65;
}
.post-content code {
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  color: #a8d9a8;
}
.post-content p code, .post-content li code {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--green);
}

.tip-box {
  border-left: 2px solid var(--green);
  padding: 0.75rem 1rem;
  margin: 1.25rem 0;
  font-size: 0.875rem;
  color: var(--muted);
}
.tip-box::before { content: 'Tip — '; font-weight: 600; color: var(--green); }

/* ===== RESULTS TABLE ===== */
.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin: 1.5rem 0;
}
.results-table th {
  text-align: left;
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 0.5rem 1rem 0.5rem 0;
  border-bottom: 1px solid var(--border);
}
.results-table td {
  padding: 0.65rem 1rem 0.65rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.results-table td.bad  { color: #ef4444; font-weight: 600; }
.results-table td.ok   { color: var(--muted); font-weight: 600; }
.results-table td.good { color: var(--green); font-weight: 600; }

/* ===== POST FIGURE (image + caption) ===== */
.post-figure {
  margin: 1.75rem 0;
}
.post-figure img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: block;
}
.post-figure figcaption {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.5rem;
  text-align: center;
}

/* ===== RELATED POSTS ===== */
.related-section {
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.related-list {
  display: flex;
  flex-direction: column;
  margin-top: 1rem;
}

.related-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  transition: opacity 0.15s;
}
.related-item:first-child { border-top: 1px solid var(--border); }
.related-item:hover { opacity: 0.7; }

.related-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

.related-meta {
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ===== ABOUT CONTENT ===== */
.about-content { font-size: 0.95rem; line-height: 1.85; }
.about-content h2 { font-size: 1.1rem; font-weight: 600; margin: 2rem 0 0.5rem; }
.about-content p { color: var(--muted); margin-bottom: 1rem; }
.about-content ul { margin: 0.5rem 0 1rem 1.25rem; color: var(--muted); }
.about-content li { margin-bottom: 0.35rem; }
.about-content strong { color: var(--text); }

.about-company-link {
  color: var(--text);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--subtle);
  text-underline-offset: 2px;
  transition: text-decoration-color 0.15s;
}
.about-company-link:hover { text-decoration-color: var(--green); }

.about-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}
.about-cta {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  color: var(--muted);
  transition: border-color 0.15s, color 0.15s;
}
.about-cta:hover {
  border-color: var(--green);
  color: var(--text);
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 1.5rem;
  font-size: 0.8rem;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-brand { color: var(--muted); }
.footer-brand strong { color: var(--text); font-weight: 600; }

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}
.footer-links a {
  color: var(--muted);
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--text); }

.footer-copy { color: var(--subtle); }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
  .hero-stats { gap: 1.5rem; }
  .post-item { grid-template-columns: 1fr; }
  .post-item-right { flex-direction: row; gap: 0.5rem; }
  .related-item { flex-direction: column; gap: 0.2rem; }
  .related-meta { white-space: normal; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 0.75rem; }
}