/* ==========================================================================
   rikiag.com v3 — Design System
   Dark mode, glassmorphism, grid background, blue-cyan gradient accents
   ========================================================================== */

:root,
[data-theme="dark"] {
  /* Surfaces */
  --bg: #09090b;
  --bg-section: #0f172a;
  --bg-soft: #0c0c0f;
  --card: #111827;
  --card-hover: #141c2e;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --hover-bg: rgba(255, 255, 255, 0.05);
  --glass-bg: rgba(17, 24, 39, 0.5);
  --pill-bg: rgba(255, 255, 255, 0.05);

  /* Text */
  --text: #f8fafc;
  --text-dim: #cbd5e1;
  --text-faint: #94a3b8;
  --text-disabled: #4b5563;

  /* Accents */
  --blue: #3b82f6;
  --blue-hover: #60a5fa;
  --cyan: #06b6d4;
  --cyan-text: #06b6d4;
  --purple: #8b5cf6;
  --green: #22c55e;
  --warning: #fbbf24;
  --danger: #f87171;
  --gradient: linear-gradient(135deg, var(--blue), var(--cyan));
  --gradient-soft: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(6, 182, 212, 0.15));

  /* Component tokens */
  --grid-line: rgba(255, 255, 255, 0.035);
  --spotlight-color: rgba(59, 130, 246, 0.1);
  --navbar-bg: rgba(9, 9, 11, 0.7);
  --navbar-border: var(--border);
  --navbar-shadow: none;
  --shadow-card: none;
  --shadow-card-hover: 0 20px 45px -20px rgba(0, 0, 0, 0.6);
  --shadow-btn-hover: 0 10px 30px -8px rgba(59, 130, 246, 0.55);
  --btn-primary-text: #06070a;
  --btn-secondary-bg: rgba(255, 255, 255, 0.02);
  --btn-secondary-hover-bg: rgba(255, 255, 255, 0.06);
  --input-bg: var(--bg-soft);
  --input-border: var(--border);
  --code-bg: var(--card);
  --code-border: var(--border);
  --code-text: #9fd8e8;
  --inline-code-bg: rgba(255, 255, 255, 0.06);
  --tag-bg: rgba(6, 182, 212, 0.08);
  --tag-border: rgba(6, 182, 212, 0.2);
  --tag-text: var(--cyan-text);

  color-scheme: dark;
}

[data-theme="light"] {
  /* Surfaces */
  --bg: #f8fafc;
  --bg-section: #f1f5f9;
  --bg-soft: #ffffff;
  --card: #ffffff;
  --card-hover: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --hover-bg: rgba(15, 23, 42, 0.05);
  --glass-bg: rgba(255, 255, 255, 0.75);
  --pill-bg: rgba(15, 23, 42, 0.04);

  /* Text */
  --text: #0f172a;
  --text-dim: #475569;
  --text-faint: #64748b;
  --text-disabled: #94a3b8;

  /* Accents */
  --blue: #2563eb;
  --blue-hover: #1d4ed8;
  --cyan: #06b6d4;
  --cyan-text: #0891b2;
  --purple: #8b5cf6;
  --green: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --gradient: linear-gradient(135deg, var(--blue), var(--cyan));
  --gradient-soft: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(6, 182, 212, 0.1));

  /* Component tokens */
  --grid-line: rgba(15, 23, 42, 0.05);
  --spotlight-color: rgba(37, 99, 235, 0.08);
  --navbar-bg: rgba(255, 255, 255, 0.75);
  --navbar-border: rgba(255, 255, 255, 0.7);
  --navbar-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.05);
  --shadow-card-hover: 0 20px 50px rgba(15, 23, 42, 0.08);
  --shadow-btn-hover: 0 10px 30px rgba(59, 130, 246, 0.25);
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: #ffffff;
  --btn-secondary-hover-bg: #f8fafc;
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --code-bg: #f8fafc;
  --code-border: #e2e8f0;
  --code-text: #0f172a;
  --inline-code-bg: rgba(15, 23, 42, 0.05);
  --tag-bg: #eff6ff;
  --tag-border: #dbeafe;
  --tag-text: #2563eb;

  color-scheme: light;
}

:root {
  /* Type */
  --font-heading: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Shape */
  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;

  /* Layout */
  --maxw: 1180px;
  --nav-h: 76px;
}

html, body { transition: background-color 0.3s ease, color 0.3s ease; }

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* ---------- Grid background + spotlight ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  transition: background-image 0.3s ease;
}

.bg-spotlight {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(600px circle at var(--mx, 50%) var(--my, 20%), var(--spotlight-color), transparent 60%);
  transition: background 0.15s ease-out;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

code, .mono { font-family: var(--font-mono); }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: var(--navbar-bg);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--navbar-border);
  box-shadow: var(--navbar-shadow);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo .dot { color: var(--cyan-text); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-size: 0.92rem;
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 999px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-links a:hover { color: var(--text); background: var(--hover-bg); }
.nav-links a.active { color: var(--text); background: rgba(59, 130, 246, 0.12); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  color: var(--text);
  align-items: center;
  justify-content: center;
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  flex-shrink: 0;
  transition: transform 0.25s ease, border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}
.theme-toggle:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-2px); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  border: 1px solid var(--border);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  background-size: 160% 160%;
  color: var(--btn-primary-text);
  border: none;
  box-shadow: 0 0 0 0 rgba(59, 130, 246, 0);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
  background-position: 100% 0;
}

.btn-ghost { color: var(--text); background: var(--btn-secondary-bg); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--border-strong); background: var(--btn-secondary-hover-bg); transform: translateY(-2px); }

.btn-sm { padding: 8px 16px; font-size: 0.82rem; }

/* ---------- Glass card ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

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

.card:hover::before { opacity: 0.6; }

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
}

/* ---------- Pills / badges / tags ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--pill-bg);
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.pill-live { color: var(--green); border-color: rgba(34, 197, 94, 0.3); background: rgba(34, 197, 94, 0.08); }
.pill-live .dot-live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
  animation: pulseDot 2s infinite;
}

.tag {
  font-size: 0.76rem;
  font-family: var(--font-mono);
  color: var(--tag-text);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 4px 10px;
  border-radius: 8px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--gradient);
}

/* ---------- Section scaffolding ---------- */
section { padding: 100px 0; position: relative; }
section.tight { padding: 60px 0; }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-bottom: 12px; }
.section-head p { color: var(--text-dim); font-size: 1.02rem; }

.section-foot { margin-top: 40px; display: flex; justify-content: center; }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  position: relative;
}

.hero-inner { text-align: center; max-width: 760px; margin: 0 auto; }

.hero h1 {
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  margin: 10px 0 6px;
}

.hero .role {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--text-dim);
  margin-bottom: 18px;
}

.hero .role .grad { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }

.hero p.lede {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto 34px;
}

.hero-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }

/* status strip */
.status-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--card);
}

.status-cell {
  padding: 20px 18px;
  border-right: 1px solid var(--border);
  text-align: left;
}

.status-cell:last-child { border-right: none; }
.status-label { font-size: 0.74rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 8px; }
.status-value { font-size: 0.95rem; font-weight: 600; }
.status-value.avail { color: var(--green); display: flex; align-items: center; gap: 8px; }
.stack-mini { display: flex; flex-wrap: wrap; gap: 6px; }
.stack-mini span { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-dim); }

/* ---------- Grid layouts ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ---------- Project card ---------- */
.project-card { overflow: hidden; }
.project-thumb {
  aspect-ratio: 16/10;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.project-card:hover .project-thumb img { transform: scale(1.06); }
.project-thumb .thumb-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(9,9,11,0.7) 100%);
}
.project-body { padding: 22px 24px 26px; }
.project-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.project-body h3 { font-size: 1.05rem; }
.project-body p { color: var(--text-dim); font-size: 0.9rem; margin: 10px 0 16px; }
.project-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.project-links { display: flex; gap: 10px; }
.project-links a {
  font-size: 0.82rem; font-weight: 600; color: var(--text-dim);
  display: inline-flex; align-items: center; gap: 6px;
  transition: color 0.2s ease;
}
.project-links a:hover { color: var(--blue); }

/* window-style thumb (no real screenshot) */
.win-thumb {
  width: 100%; height: 100%;
  background: radial-gradient(circle at 30% 20%, rgba(59,130,246,0.25), transparent 60%),
              radial-gradient(circle at 80% 80%, rgba(6,182,212,0.2), transparent 55%),
              #0e1220;
  display: flex; flex-direction: column;
}
.win-bar { display: flex; gap: 6px; padding: 10px 12px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.win-bar span { width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.15); }
.win-content { flex: 1; display: flex; align-items: center; justify-content: center; font-family: var(--font-mono); font-size: 2.2rem; font-weight: 700; opacity: 0.35; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Tech stack ---------- */
.stack-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.stack-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 22px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--card);
  font-size: 0.82rem;
  color: var(--text-dim);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.stack-item:hover { transform: translateY(-4px); border-color: rgba(59,130,246,0.4); box-shadow: 0 12px 30px -14px rgba(59,130,246,0.4); color: var(--text); }
.stack-item img { width: 30px; height: 30px; }

/* ---------- Articles ---------- */
.article-row { display: flex; flex-direction: column; }
.article-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 4px; border-bottom: 1px solid var(--border);
  transition: padding-left 0.25s ease;
}
.article-item:first-child { padding-top: 4px; }
.article-item:hover { padding-left: 10px; }
.article-item .a-left { display: flex; align-items: baseline; gap: 18px; }
.article-item .a-index { font-family: var(--font-mono); color: var(--text-faint); font-size: 0.85rem; }
.article-item h4 { font-size: 1.05rem; font-weight: 600; font-family: var(--font-body); }
.article-item .a-cat { color: var(--text-faint); font-size: 0.82rem; margin-top: 4px; }
.article-item .a-arrow { color: var(--text-faint); transition: transform 0.25s ease, color 0.25s ease; }
.article-item:hover .a-arrow { transform: translateX(4px); color: var(--cyan-text); }

/* ---------- CTA band ---------- */
.cta-band {
  text-align: center;
  padding: 70px 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(59,130,246,0.1), rgba(139,92,246,0.06));
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.cta-band h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); margin-bottom: 24px; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--border); padding: 60px 0 30px; background: var(--bg-section); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand p { color: var(--text-dim); font-size: 0.9rem; margin-top: 10px; max-width: 280px; }
.footer-col h5 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin-bottom: 16px; }
.footer-col a { display: block; color: var(--text-dim); font-size: 0.92rem; padding: 6px 0; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--cyan-text); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px; border-top: 1px solid var(--border);
  color: var(--text-faint); font-size: 0.82rem; flex-wrap: wrap; gap: 10px;
}

/* ---------- Social icons row ---------- */
.social-row { display: flex; gap: 12px; }
.social-btn {
  width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-dim);
  transition: transform 0.25s ease, color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.social-btn:hover { transform: translateY(-3px); color: var(--text); border-color: var(--blue); box-shadow: 0 8px 22px -10px rgba(59,130,246,0.6); }
.social-btn svg { width: 18px; height: 18px; }

/* ---------- Page header (inner pages) ---------- */
.page-head { padding: 170px 0 60px; text-align: left; }
.page-head h1 { font-size: clamp(2.2rem, 5vw, 3.2rem); }
.page-head p.lede { color: var(--text-dim); font-size: 1.05rem; max-width: 560px; margin-top: 14px; }

/* ---------- Stat / counter ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.stat-card { padding: 30px 24px; text-align: left; }
.stat-num { font-family: var(--font-heading); font-size: 2.6rem; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-label { color: var(--text-dim); font-size: 0.9rem; margin-top: 6px; }

/* ---------- Timeline ---------- */
.timeline { position: relative; padding-left: 30px; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px; width: 1px; background: linear-gradient(var(--blue), var(--purple)); opacity: 0.4; }
.tl-item { position: relative; padding-bottom: 40px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--cyan-text);
}
.tl-year { font-family: var(--font-mono); color: var(--cyan-text); font-size: 0.85rem; margin-bottom: 4px; }
.tl-item h4 { font-size: 1.1rem; margin-bottom: 6px; }
.tl-item p { color: var(--text-dim); font-size: 0.92rem; }

/* ---------- Skills ---------- */
.skill-group h4 { font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-faint); margin-bottom: 16px; }
.skill-list { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-chip {
  padding: 8px 14px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--card); font-size: 0.86rem; color: var(--text-dim);
  display: flex; align-items: center; gap: 8px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.skill-chip:hover { border-color: rgba(6,182,212,0.4); color: var(--text); }
.skill-chip img { width: 16px; height: 16px; }

/* ---------- Filter / search (projects) ---------- */
.filter-bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 44px; }
.search-box {
  display: flex; align-items: center; gap: 10px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 16px; background: var(--card); flex: 1; min-width: 220px;
}
.search-box input { background: none; border: none; outline: none; color: var(--text); font-size: 0.92rem; width: 100%; }
.search-box svg { color: var(--text-faint); flex-shrink: 0; }
.filter-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.filter-chip {
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--border);
  background: transparent; color: var(--text-dim); font-size: 0.86rem; font-weight: 600;
  transition: all 0.2s ease;
}
.filter-chip:hover { border-color: var(--border-strong); color: var(--text); }
.filter-chip.active { background: var(--gradient); color: var(--btn-primary-text); border-color: transparent; }

/* ---------- Blog ---------- */
.featured-article { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 0; overflow: hidden; }
.featured-article .fa-media { min-height: 320px; }
.featured-article .fa-body { padding: 40px; display: flex; flex-direction: column; justify-content: center; }
.featured-article h3 { font-size: 1.7rem; margin: 12px 0 14px; }
.featured-article p { color: var(--text-dim); margin-bottom: 22px; }
.blog-card { display: flex; flex-direction: column; }
.blog-card .bc-media { aspect-ratio: 16/10; border-bottom: 1px solid var(--border); }
.blog-card .bc-body { padding: 20px 22px 24px; }
.blog-card h4 { font-size: 1.02rem; margin: 10px 0 8px; }
.blog-card p { color: var(--text-dim); font-size: 0.88rem; }
.meta-row { display: flex; gap: 14px; color: var(--text-faint); font-size: 0.78rem; font-family: var(--font-mono); }
.cat-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.cat-cloud a {
  padding: 14px 20px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--card); font-weight: 600; font-size: 0.92rem; color: var(--text-dim);
  transition: all 0.2s ease;
}
.cat-cloud a:hover { border-color: rgba(6,182,212,0.4); color: var(--text); transform: translateY(-2px); }

/* ---------- Lab ---------- */
.diagram-flow { display: flex; flex-direction: column; align-items: center; gap: 0; }
.flow-node {
  width: 100%; max-width: 320px;
  padding: 16px 20px; text-align: center; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--card); font-weight: 600; font-size: 0.92rem;
}
.flow-node.accent { border-color: rgba(59,130,246,0.4); background: rgba(59,130,246,0.08); }
.flow-arrow { padding: 6px 0; color: var(--text-faint); }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.service-item {
  display: flex; align-items: center; gap: 12px; padding: 16px 18px;
  border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--card);
  font-size: 0.92rem;
}
.service-item .check {
  width: 20px; height: 20px; border-radius: 50%; background: rgba(34,197,94,0.12);
  color: var(--green); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.hw-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.hw-item { padding: 22px; text-align: center; }
.hw-item .hw-label { color: var(--text-faint); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.hw-item .hw-val { font-family: var(--font-mono); font-size: 1.05rem; color: var(--cyan-text); }
.uptime-badge { display: flex; align-items: center; gap: 16px; }
.uptime-num { font-family: var(--font-heading); font-size: 2.2rem; }

/* ---------- Resume ---------- */
.resume-section { margin-bottom: 48px; }
.resume-section h3 { font-size: 1.3rem; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.resume-item { padding: 20px 0; border-bottom: 1px solid var(--border); }
.resume-item:last-child { border-bottom: none; }
.resume-item .ri-top { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 6px; }
.resume-item h4 { font-size: 1.02rem; }
.resume-item .ri-period { font-family: var(--font-mono); color: var(--text-faint); font-size: 0.82rem; }
.resume-item .ri-org { color: var(--cyan-text); font-size: 0.88rem; margin-top: 2px; }
.resume-item p { color: var(--text-dim); font-size: 0.9rem; margin-top: 8px; }

/* ---------- Contact form ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: start; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 8px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 13px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--input-border); background: var(--input-bg); color: var(--text);
  font-family: var(--font-body); font-size: 0.94rem; outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(59,130,246,0.15); }
.contact-info-list { display: flex; flex-direction: column; gap: 16px; }
.contact-info-item { display: flex; align-items: center; gap: 14px; padding: 16px 18px; }
.contact-info-item .ci-icon {
  width: 42px; height: 42px; border-radius: 12px; display: flex; align-items: center; justify-content: center;
  background: rgba(6,182,212,0.1); color: var(--cyan-text); flex-shrink: 0;
}
.contact-info-item .ci-label { font-size: 0.78rem; color: var(--text-faint); }
.contact-info-item .ci-val { font-weight: 600; font-size: 0.95rem; }

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .grid-3, .stat-grid, .service-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(3, 1fr); }
  .stack-grid { grid-template-columns: repeat(4, 1fr); }
  .status-strip { grid-template-columns: repeat(2, 1fr); }
  .status-cell:nth-child(2) { border-right: none; }
  .status-cell { border-bottom: 1px solid var(--border); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .featured-article { grid-template-columns: 1fr; }
  .featured-article .fa-media { min-height: 220px; }
  .contact-grid { grid-template-columns: 1fr; }
  .hw-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav-links { position: fixed; top: var(--nav-h); left: 16px; right: 16px; flex-direction: column;
    background: rgba(9,9,11,0.95); backdrop-filter: blur(16px); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 12px; align-items: stretch; gap: 4px;
    transform: translateY(-12px); opacity: 0; pointer-events: none; transition: all 0.25s ease; }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 12px 16px; }
  .nav-toggle { display: flex; }
  .grid-3, .grid-2, .grid-4, .stat-grid, .service-grid, .hw-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: repeat(3, 1fr); }
  section { padding: 64px 0; }
  .page-head { padding: 130px 0 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- Article (blog-article-read) ---------- */
.article-hero { padding: 160px 0 20px; }
.breadcrumb { display: inline-flex; align-items: center; gap: 8px; color: var(--text-faint); font-size: 0.88rem; margin-bottom: 26px; transition: color 0.2s ease; }
.breadcrumb:hover { color: var(--cyan-text); }
.article-meta-row { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-top: 18px; color: var(--text-faint); font-size: 0.85rem; font-family: var(--font-mono); }
.article-meta-row .dot-sep::before { content: "·"; margin-right: 14px; color: var(--text-faint); }
.article-cover { aspect-ratio: 21/9; border-radius: var(--radius); overflow: hidden; margin: 36px 0 48px; border: 1px solid var(--border); }
.article-cover .win-thumb .win-content { font-size: 3rem; }

.prose { max-width: 720px; margin: 0 auto; }
.prose > * + * { margin-top: 22px; }
.prose h2 { font-size: 1.5rem; margin-top: 44px; }
.prose h3 { font-size: 1.2rem; margin-top: 34px; }
.prose p { color: var(--text-dim); font-size: 1.03rem; line-height: 1.85; }
.prose ul, .prose ol { color: var(--text-dim); font-size: 1.03rem; line-height: 1.85; padding-left: 22px; }
.prose li + li { margin-top: 8px; }
.prose a { color: var(--cyan-text); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--text); }
.prose blockquote {
  border-left: 3px solid var(--cyan-text);
  padding: 4px 0 4px 22px;
  color: var(--text);
  font-size: 1.08rem;
  font-style: italic;
}
.prose pre {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--code-text);
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--inline-code-bg);
  padding: 2px 7px;
  border-radius: 6px;
  color: var(--cyan-text);
}
.prose pre code { background: none; padding: 0; color: inherit; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 40px 0; }

.article-tags { display: flex; gap: 8px; flex-wrap: wrap; max-width: 720px; margin: 40px auto 0; }

.share-row {
  display: flex; align-items: center; gap: 14px;
  max-width: 720px; margin: 28px auto 0;
  padding-top: 24px; border-top: 1px solid var(--border);
}
.share-row span { color: var(--text-faint); font-size: 0.85rem; margin-right: 4px; }

.author-card {
  max-width: 720px; margin: 48px auto 0;
  display: flex; align-items: center; gap: 16px;
  padding: 22px 24px;
}
.author-avatar {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--gradient); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-weight: 700; color: #06070a;
}
.author-card h5 { font-size: 0.98rem; margin-bottom: 3px; }
.author-card p { color: var(--text-faint); font-size: 0.85rem; }

.prevnext { max-width: 720px; margin: 40px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.prevnext a { padding: 20px 22px; display: block; }
.prevnext .pn-label { color: var(--text-faint); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.prevnext .pn-next { text-align: right; }
.prevnext h5 { font-size: 0.95rem; }

@media (max-width: 720px) {
  .prevnext { grid-template-columns: 1fr; }
  .prevnext .pn-next { text-align: left; }
  .article-hero { padding: 130px 0 10px; }
}

/* ==========================================================================
   Homepage v2 — split hero terminal, section rhythm, bento stats, code-card,
   horizontal timeline
   ========================================================================== */

.section-alt { background: var(--bg-section); }

/* ---------- Split hero ---------- */
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; width: 100%; }
.hero-copy { text-align: left; }
.hero-copy .eyebrow { margin-bottom: 14px; }
.hero-copy h1 { font-size: clamp(2.4rem, 5.2vw, 3.6rem); margin: 8px 0 4px; }
.hero-copy .role { font-size: clamp(1.05rem, 2vw, 1.35rem); margin-bottom: 16px; }
.hero-copy p.lede { margin: 0 0 32px; max-width: 460px; text-align: left; }
.hero-copy .hero-cta { justify-content: flex-start; margin-bottom: 0; }

/* ---------- Terminal card ---------- */
.terminal-wrap { perspective: 1000px; }
.terminal-card {
  background: #0d1117;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 70px -24px rgba(0, 0, 0, 0.55);
  font-family: var(--font-mono);
  transform: rotateY(-6deg) rotateX(2deg);
  transition: transform 0.4s ease;
}
.terminal-wrap:hover .terminal-card { transform: rotateY(-2deg) rotateX(0deg); }
.terminal-bar {
  display: flex; align-items: center; gap: 7px;
  padding: 13px 16px; background: #161b22; border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.t-dot { width: 10px; height: 10px; border-radius: 50%; }
.t-dot.red { background: #ff5f56; }
.t-dot.yellow { background: #ffbd2e; }
.t-dot.green { background: #27c93f; }
.terminal-title { margin-left: 8px; font-size: 0.76rem; color: #8b949e; }
.terminal-body { padding: 24px 24px 28px; font-size: 0.85rem; line-height: 1.7; color: #c9d1d9; }
.t-prompt { color: #3fb950; }
.t-cmd { color: #79c0ff; }
.t-cursor-static { display: inline-block; width: 7px; height: 15px; background: #3fb950; vertical-align: -2px; animation: blinkCursor 1s step-end infinite; margin-left: 2px; }

.terminal-body [data-tline] {
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.terminal-body.in-view [data-tline] { opacity: 1; transform: translateY(0); }

.t-name-line { font-size: 1.15rem; font-weight: 700; color: #f0f6fc; font-family: var(--font-heading); margin: 16px 0 20px; }
.t-label { color: #8b949e; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; margin-top: 16px; }
.t-value { color: #e6edf3; margin-top: 4px; }
.t-value.avail { color: #3fb950; display: flex; align-items: center; gap: 8px; }
.t-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.t-tags span { background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.08); padding: 3px 9px; border-radius: 6px; font-size: 0.74rem; color: #c9d1d9; }

.t-bars { display: flex; align-items: flex-end; gap: 5px; height: 34px; margin-top: 8px; }
.t-bars i { flex: 1; background: linear-gradient(180deg, #3b82f6, #06b6d4); border-radius: 2px; opacity: 0.85; font-style: normal; }

@keyframes blinkCursor { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-copy { text-align: center; }
  .hero-copy p.lede { margin-left: auto; margin-right: auto; }
  .hero-copy .hero-cta { justify-content: center; }
  .terminal-card { transform: none; max-width: 440px; margin: 0 auto; }
  .terminal-wrap:hover .terminal-card { transform: none; }
}

/* ---------- Bento stats ---------- */
.bento-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.bento-stats .stat-card { text-align: left; }

/* ---------- Code card (about teaser) ---------- */
.about-teaser { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-teaser .at-copy h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 18px; }
.about-teaser .at-copy p { color: var(--text-dim); font-size: 1rem; line-height: 1.8; margin-bottom: 14px; }
.about-teaser .at-link { display: inline-flex; align-items: center; gap: 8px; color: var(--cyan-text); font-weight: 600; font-size: 0.94rem; margin-top: 10px; }
.code-card {
  background: var(--code-bg); border: 1px solid var(--code-border); border-radius: var(--radius);
  padding: 26px 28px; font-family: var(--font-mono); font-size: 0.86rem; line-height: 1.9;
  box-shadow: var(--shadow-card);
}
.code-card .c-key { color: var(--purple); }
.code-card .c-str { color: var(--cyan-text); }
.code-card .c-punc { color: var(--text-faint); }
.code-card .c-comment { color: var(--text-faint); font-style: italic; }

@media (max-width: 980px) {
  .about-teaser { grid-template-columns: 1fr; gap: 32px; }
}

/* ---------- Horizontal timeline (homepage) ---------- */
.timeline-h { display: flex; gap: 0; overflow-x: auto; padding: 6px 2px 14px; scrollbar-width: thin; }
.th-item { flex: 1 0 190px; position: relative; padding-right: 20px; }
.th-item:not(:last-child)::after {
  content: ""; position: absolute; top: 9px; left: 24px; right: 0; height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--cyan)); opacity: 0.35;
}
.th-dot {
  width: 18px; height: 18px; border-radius: 50%; background: var(--bg-section);
  border: 2px solid var(--cyan-text); margin-bottom: 16px; position: relative; z-index: 1;
}
.section-alt .th-dot { background: var(--bg); }
.th-year { font-family: var(--font-mono); color: var(--cyan-text); font-size: 0.8rem; margin-bottom: 5px; }
.th-item h5 { font-size: 0.94rem; margin-bottom: 5px; }
.th-item p { color: var(--text-dim); font-size: 0.83rem; line-height: 1.55; }

@media (max-width: 720px) {
  .bento-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ==========================================================================
   Homepage v3 — section rhythm variety, premium tech cards, richer article
   metadata, sturdier navbar
   ========================================================================== */

/* ---------- Navbar: heavier glass + shrink on scroll ---------- */
.navbar { transition: padding 0.3s ease, background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease; }
.navbar.scrolled {
  padding: 10px 0;
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

/* ---------- Project spotlight (text + media split) ---------- */
.project-spotlight {
  display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 48px; align-items: center;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 44px; box-shadow: var(--shadow-card); overflow: hidden;
}
.project-spotlight .ps-copy .tag { margin-bottom: 18px; display: inline-block; }
.project-spotlight h3 { font-size: clamp(1.4rem, 2.6vw, 1.9rem); margin-bottom: 16px; }
.project-spotlight .story { color: var(--text-dim); font-size: 1.02rem; line-height: 1.75; margin-bottom: 26px; }
.project-spotlight .story strong { color: var(--text); }
.project-spotlight .ps-media { border-radius: var(--radius-sm); overflow: hidden; aspect-ratio: 4/3; }
.project-spotlight:hover .ps-media .win-thumb { transform: scale(1.03); }
.project-spotlight .ps-media .win-thumb { height: 100%; transition: transform 0.5s ease; }

@media (max-width: 900px) {
  .project-spotlight { grid-template-columns: 1fr; padding: 28px; gap: 28px; }
}

/* ---------- Secondary project row (story-driven captions) ---------- */
.project-mini-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.project-mini { display: flex; gap: 18px; padding: 24px; align-items: flex-start; }
.project-mini .pm-thumb { width: 64px; height: 64px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; }
.project-mini .pm-thumb .win-thumb { height: 100%; }
.project-mini .pm-thumb .win-content { font-size: 1.1rem; }
.project-mini h4 { font-size: 1rem; margin-bottom: 6px; }
.project-mini p { color: var(--text-dim); font-size: 0.88rem; line-height: 1.6; }
.project-mini p strong { color: var(--text); }

@media (max-width: 720px) {
  .project-mini-row { grid-template-columns: 1fr; }
}

/* ---------- Tech Stack: premium cards ---------- */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tech-card {
  position: relative; overflow: hidden; padding: 28px 26px; text-align: left; min-height: 168px;
}
.tech-card .tech-icon { width: 34px; height: 34px; margin-bottom: 16px; }
.tech-card h4 { font-size: 1.05rem; margin-bottom: 3px; }
.tech-cat { color: var(--text-faint); font-size: 0.78rem; margin-bottom: 16px; }
.tech-meta-row { display: flex; align-items: center; justify-content: space-between; }
.tech-rating { color: var(--cyan-text); font-size: 0.82rem; letter-spacing: 2px; }
.tech-years { color: var(--text-dim); font-size: 0.78rem; font-family: var(--font-mono); }
.tech-desc {
  position: absolute; inset: 0; padding: 26px;
  background: var(--card-hover);
  display: flex; align-items: center;
  color: var(--text-dim); font-size: 0.86rem; line-height: 1.6;
  transform: translateY(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.tech-card:hover .tech-desc { transform: translateY(0); }

.tech-more { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 22px; color: var(--text-faint); font-size: 0.88rem; }
.tech-more .tag { font-size: 0.78rem; }

@media (max-width: 900px) { .tech-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .tech-grid { grid-template-columns: 1fr; } }

/* ---------- Article item metadata ---------- */
.article-item .a-left { align-items: flex-start; }
.article-item .a-badge-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.article-item .a-badge-row .tag { margin: 0; }
.article-item h4 { margin: 0 0 6px; }

/* ==========================================================================
   Site-wide consistency pass — case study pages, live metrics, service cards,
   blog upgrades, table of contents
   ========================================================================== */

/* ---------- Live metrics strip (Home + Lab) ---------- */
.metrics-panel {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px 40px; box-shadow: var(--shadow-card);
}
.metrics-panel-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-bottom: 8px; }
.metrics-panel-head h3 { font-size: 1.15rem; }
.metrics-rule { border: none; border-top: 2px dashed var(--border-strong); margin: 18px 0 28px; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px 24px; }
.metric-cell .m-label { color: var(--text-faint); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; }
.metric-cell .m-val { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 700; }
.metric-cell .m-bar { height: 6px; border-radius: 999px; background: var(--border); margin-top: 10px; overflow: hidden; }
.metric-cell .m-bar span { display: block; height: 100%; background: var(--gradient); border-radius: 999px; }
.live-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.74rem; font-family: var(--font-mono); color: var(--green);
  background: rgba(34,197,94,0.1); border: 1px solid rgba(34,197,94,0.25);
  padding: 4px 10px; border-radius: 999px;
}
.live-badge .dot-live { width: 6px; height: 6px; border-radius: 50%; background: var(--green); display: inline-block; }

@media (max-width: 900px) { .metrics-grid { grid-template-columns: repeat(2, 1fr); } .metrics-panel { padding: 28px 24px; } }
@media (max-width: 560px) { .metrics-grid { grid-template-columns: 1fr 1fr; gap: 22px 16px; } }

/* ---------- Service card v2 (Lab) ---------- */
.service-card-v2 { padding: 22px; display: flex; gap: 14px; align-items: flex-start; }
.service-card-v2 .sc-icon { font-size: 1.5rem; line-height: 1; flex-shrink: 0; margin-top: 2px; }
.service-card-v2 h4 { font-size: 1rem; margin-bottom: 3px; }
.service-card-v2 .sc-cat { color: var(--text-faint); font-size: 0.8rem; margin-bottom: 12px; }
.service-card-v2 .sc-meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.sc-pill { font-size: 0.72rem; font-family: var(--font-mono); padding: 3px 9px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-dim); }
.sc-pill.public { color: var(--cyan-text); border-color: rgba(6,182,212,0.3); background: rgba(6,182,212,0.08); }
.sc-pill.private { color: var(--text-faint); }
.sc-pill.running { color: var(--green); border-color: rgba(34,197,94,0.3); background: rgba(34,197,94,0.08); }
.sc-uptime { margin-left: auto; font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-dim); }

/* ---------- Software versions (Lab) ---------- */
.version-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.version-item { padding: 20px; text-align: center; }
.version-item .v-name { font-size: 0.88rem; color: var(--text-dim); margin-bottom: 8px; }
.version-item .v-num { font-family: var(--font-mono); font-size: 1.3rem; color: var(--cyan-text); font-weight: 600; }

@media (max-width: 720px) { .version-grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Blog illustration cover ---------- */
.illustration-cover { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: #0d1117; }
.illustration-cover svg { width: 100%; height: 100%; }

/* ---------- Difficulty badge ---------- */
.badge-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.difficulty { font-size: 0.76rem; font-family: var(--font-mono); padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-dim); }
.difficulty.beginner { color: var(--green); border-color: rgba(34,197,94,0.3); background: rgba(34,197,94,0.08); }
.difficulty.intermediate { color: var(--warning); border-color: rgba(245,158,11,0.3); background: rgba(245,158,11,0.08); }
.difficulty.advanced { color: var(--danger); border-color: rgba(239,68,68,0.3); background: rgba(239,68,68,0.08); }

/* ---------- Article layout with Table of Contents ---------- */
.article-layout { display: grid; grid-template-columns: 1fr 240px; gap: 56px; align-items: start; }
.article-layout .prose { max-width: 100%; margin: 0; }
.toc-aside { position: sticky; top: calc(var(--nav-h) + 24px); }
.toc-aside h5 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin-bottom: 14px; }
.toc-list { display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--border); }
.toc-list a {
  display: block; padding: 7px 0 7px 16px; font-size: 0.86rem; color: var(--text-dim);
  border-left: 2px solid transparent; margin-left: -1px; transition: color 0.2s ease, border-color 0.2s ease;
}
.toc-list a:hover { color: var(--text); }
.toc-list a.active { color: var(--cyan-text); border-left-color: var(--cyan-text); font-weight: 600; }

@media (max-width: 980px) {
  .article-layout { grid-template-columns: 1fr; }
  .toc-aside { position: static; order: -1; padding: 18px 20px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--card); }
  .toc-list { border-left: none; }
  .toc-list a { padding: 5px 0; border-left: none; }
}

/* ---------- Case study section rule (project-detail) ---------- */
.cs-section-num { font-family: var(--font-mono); color: var(--cyan-text); font-size: 0.82rem; margin-bottom: 10px; display: block; }
.challenge-card { padding: 26px; }
.challenge-card .ch-label { color: var(--danger); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 8px; font-weight: 600; }
.challenge-card .sol-label { color: var(--green); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; margin: 14px 0 8px; font-weight: 600; }
.challenge-card p { color: var(--text-dim); font-size: 0.9rem; line-height: 1.6; }

/* ==========================================================================
   Premium polish pass — contact form upgrades, reading progress, code copy,
   card spotlight glow, noise texture, staggered reveal
   ========================================================================== */

/* ---------- Noise texture ---------- */
.bg-noise {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.03;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: overlay;
}

/* ---------- Page fade transition ---------- */
body { opacity: 0; animation: pageFadeIn 0.45s ease forwards; }
@keyframes pageFadeIn { to { opacity: 1; } }

/* ---------- Card mouse-spotlight glow ---------- */
.card { --gx: 50%; --gy: 50%; }
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(220px circle at var(--gx) var(--gy), rgba(59, 130, 246, 0.14), transparent 70%);
  opacity: 0; transition: opacity 0.3s ease; z-index: 0;
}
.card:hover::after { opacity: 1; }
.card > * { position: relative; z-index: 1; }

/* ---------- Image fade-in ---------- */
img:not(.no-fade) { opacity: 0; transition: opacity 0.35s ease; }
img.img-loaded, img.no-fade { opacity: 1; }

/* ---------- Reading progress bar ---------- */
.reading-progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--gradient); z-index: 200; transition: width 0.1s linear;
}

/* ---------- Code block copy button ---------- */
.code-wrap { position: relative; }
.copy-code-btn {
  position: absolute; top: 10px; right: 10px;
  display: flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 0.72rem; font-weight: 600;
  color: #8b949e; background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 5px 10px; border-radius: 6px; transition: all 0.2s ease;
}
.copy-code-btn:hover { color: #e6edf3; border-color: rgba(255, 255, 255, 0.2); }
.copy-code-btn.copied { color: #3fb950; border-color: rgba(63, 185, 80, 0.4); }

/* ---------- Blockquote with icon ---------- */
.prose blockquote {
  position: relative; padding: 18px 24px 18px 52px;
  background: var(--pill-bg); border-radius: var(--radius-sm); border-left: 3px solid var(--cyan-text);
}
.prose blockquote::before {
  content: "💡"; position: absolute; left: 18px; top: 16px; font-size: 1.1rem; font-style: normal;
}

/* ---------- Prev/next with thumbnail ---------- */
.prevnext a { display: flex; align-items: center; gap: 14px; }
.prevnext .pn-thumb { width: 52px; height: 52px; border-radius: var(--radius-sm); overflow: hidden; flex-shrink: 0; }
.prevnext .pn-thumb .win-thumb { height: 100%; }
.prevnext .pn-thumb .win-content { font-size: 1rem; }
.prevnext .pn-next { flex-direction: row-reverse; text-align: right; }

/* ---------- Reading meta chips ---------- */
.read-meta-chips { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }

/* ---------- Contact: choice groups ---------- */
.choice-group { display: flex; flex-wrap: wrap; gap: 10px; }
.choice-chip { position: relative; }
.choice-chip input { position: absolute; opacity: 0; width: 0; height: 0; }
.choice-chip label {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 10px 16px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--input-bg); font-size: 0.86rem; color: var(--text-dim); transition: all 0.2s ease;
}
.choice-chip input:checked + label { background: rgba(59, 130, 246, 0.1); border-color: var(--blue); color: var(--text); }
.choice-chip label:hover { border-color: var(--border-strong); }

/* ---------- Availability card ---------- */
.availability-card { padding: 22px 24px; }
.availability-card .av-top { display: flex; align-items: center; gap: 10px; font-weight: 600; margin-bottom: 12px; }
.availability-card .av-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(34,197,94,.6); animation: pulseDot 2s infinite; }
.availability-card .av-response { display: flex; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--border); font-size: 0.85rem; }
.availability-card .av-response .r-label { color: var(--text-faint); }
.availability-card .av-response .r-val { color: var(--text-dim); }

/* ---------- Form success state ---------- */
.form-success { display: none; text-align: center; padding: 50px 20px; }
.form-success.show { display: block; }
.form-success .fs-check {
  width: 60px; height: 60px; border-radius: 50%; background: rgba(34,197,94,0.12);
  color: var(--green); display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 1.8rem;
}
.form-success h4 { font-size: 1.2rem; margin-bottom: 8px; }
.form-success p { color: var(--text-dim); font-size: 0.92rem; }

/* ---------- Docs: tables ---------- */
.prose table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.prose th { text-align: left; color: var(--text-faint); font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.05em; padding: 10px 14px; border-bottom: 1px solid var(--border-strong); }
.prose td { padding: 12px 14px; border-bottom: 1px solid var(--border); color: var(--text-dim); vertical-align: top; }
.prose td:first-child, .prose th:first-child { color: var(--text); font-family: var(--font-mono); font-size: 0.85rem; }
.prose td code { white-space: nowrap; }

/* ---------- Docs: swatch + nav card ---------- */
.swatch-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 20px 0; }
.swatch { display: flex; flex-direction: column; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-dim); }
.swatch-color { width: 56px; height: 56px; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.docs-nav-card { padding: 24px; position: sticky; top: calc(var(--nav-h) + 24px); }
.docs-nav-card h5 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin-bottom: 14px; }
.docs-nav-card a { display: block; padding: 7px 0; font-size: 0.88rem; color: var(--text-dim); transition: color 0.2s ease; }
.docs-nav-card a:hover { color: var(--cyan-text); }