/* ===== Tokens ===== */
:root {
  --bg: #f8f7f4;
  --bg-alt: #efece5;
  --surface: #ffffff;
  --surface-2: #fafaf7;
  --text: #16181d;
  --text-muted: #55606e;
  --border: #e3e0d8;
  --accent: #ec7e09;
  --accent-2: #ff5e5b;
  --accent-soft: rgba(236, 126, 9, 0.12);
  --shadow-sm: 0 1px 2px rgba(20, 20, 20, 0.04), 0 1px 3px rgba(20, 20, 20, 0.06);
  --shadow-md: 0 6px 20px rgba(20, 20, 20, 0.08);
  --radius: 14px;
  --radius-sm: 8px;
  --container: 1120px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

[data-theme="dark"] {
  --bg: #0d1015;
  --bg-alt: #11151c;
  --surface: #161b24;
  --surface-2: #1c222d;
  --text: #ecf0f5;
  --text-muted: #95a0b0;
  --border: #232a36;
  --accent: #ff8f2c;
  --accent-2: #ff6f6c;
  --accent-soft: rgba(255, 143, 44, 0.16);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.45);
}

/* ===== Reset / base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.25s ease, color 0.25s ease;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.4em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.4rem, 5vw + 1rem, 4.2rem); font-weight: 800; letter-spacing: -0.025em; }
h2 { font-size: clamp(1.6rem, 2vw + 1rem, 2.4rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; margin: 0 0 1em; }
button { font: inherit; color: inherit; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.eyebrow { font-size: 0.78rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin: 0 0 0.6rem; }
.eyebrow.centered, .centered { text-align: center; }
.subtle { color: var(--text-muted); }

.skip-link {
  position: absolute; left: -9999px; top: 8px; padding: 0.5rem 1rem;
  background: var(--accent); color: #fff; border-radius: var(--radius-sm); z-index: 100;
}
.skip-link:focus { left: 8px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.site-header.scrolled { border-bottom-color: var(--border); }
.nav-row { display: flex; align-items: center; gap: 1.5rem; padding: 0.85rem 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--text); font-weight: 600; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; font-weight: 800; display: grid; place-items: center;
  box-shadow: var(--shadow-sm);
}
.brand-name { font-size: 0.96rem; }
.primary-nav { display: flex; gap: 1.4rem; margin-left: auto; }
.primary-nav a {
  color: var(--text-muted); font-size: 0.95rem; font-weight: 500;
  padding: 0.4rem 0; position: relative;
}
.primary-nav a:hover { color: var(--text); text-decoration: none; }
.primary-nav a.active { color: var(--text); }
.primary-nav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--accent); border-radius: 2px;
}
.nav-actions { display: flex; gap: 0.4rem; }
.icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text-muted); cursor: pointer;
  display: grid; place-items: center;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.icon-btn:hover { color: var(--text); border-color: var(--text-muted); }
.icon-sun { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
.menu-only { display: none; }

/* ===== Hero ===== */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(4rem, 9vw, 7.5rem) 0 clamp(3.5rem, 6vw, 5.5rem);
}
.hero-bg {
  position: absolute; inset: -10% -10% auto -10%; height: 100%;
  background:
    radial-gradient(60% 50% at 20% 10%, var(--accent-soft), transparent 70%),
    radial-gradient(60% 50% at 90% 30%, color-mix(in srgb, var(--accent-2) 30%, transparent), transparent 70%);
  filter: blur(20px);
  pointer-events: none; z-index: 0;
}
.hero-inner { position: relative; z-index: 1; max-width: 880px; }
.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: clamp(1.05rem, 1.1vw + 0.85rem, 1.25rem); color: var(--text-muted); max-width: 720px; margin: 1.2rem 0 2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.hero-stats {
  list-style: none; padding: 0; margin: 2.5rem 0 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
  max-width: 720px;
}
.hero-stats li {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1rem;
}
.hero-stats strong { display: block; font-size: 1.6rem; font-weight: 800; color: var(--text); }
.hero-stats span { font-size: 0.82rem; color: var(--text-muted); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.78rem 1.3rem; font-weight: 600; font-size: 0.96rem;
  border-radius: 999px; border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 18px rgba(236, 126, 9, 0.28);
}
.btn-primary:hover { color: #fff; }
.btn-ghost {
  background: transparent; color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--text-muted); color: var(--text); }

/* ===== Section base ===== */
.section { padding: clamp(4rem, 7vw, 6rem) 0; }
.section-alt { background: var(--bg-alt); }
.section h2 { margin-top: 0.4rem; }

/* ===== About ===== */
.two-col {
  display: grid; grid-template-columns: 280px 1fr; gap: 3rem; align-items: start;
}
.about-media img {
  width: 100%; height: auto; aspect-ratio: 1/1; object-fit: cover;
  border-radius: 24px; border: 1px solid var(--border); box-shadow: var(--shadow-md);
}
.social-row { list-style: none; padding: 0; margin: 1.2rem 0 0; display: flex; gap: 0.6rem; }
.social-row a {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text-muted);
  display: grid; place-items: center;
  transition: color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}
.social-row a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-1px); }

/* ===== Timeline ===== */
.timeline {
  list-style: none; padding: 0; margin: 2.5rem 0 0;
  position: relative;
}
.timeline::before {
  content: ""; position: absolute; left: 168px; top: 6px; bottom: 6px;
  width: 2px; background: var(--border);
}
.t-item {
  display: grid; grid-template-columns: 160px 1fr; gap: 2rem;
  position: relative; padding: 0 0 2.2rem 0;
}
.t-item::before {
  content: ""; position: absolute; left: 162px; top: 14px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 3px solid var(--accent); z-index: 1;
}
.section-alt .t-item::before { background: var(--bg-alt); }
.t-meta { text-align: right; padding-right: 1.5rem; }
.t-date { display: block; font-weight: 600; color: var(--text); font-size: 0.92rem; }
.t-place { display: block; font-size: 0.82rem; color: var(--text-muted); margin-top: 0.2rem; }
.t-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem 1.6rem; box-shadow: var(--shadow-sm);
  margin-left: 1.5rem;
}
.t-card h3 { margin-bottom: 0.3rem; font-size: 1.15rem; }
.t-org { font-weight: 500; color: var(--text-muted); }
.t-bullets { padding-left: 1.1rem; margin-bottom: 0; }
.t-bullets li { margin-bottom: 0.35rem; color: var(--text-muted); }
.t-bullets li strong { color: var(--text); font-weight: 600; }

.outcomes { margin-top: 1rem; border-top: 1px dashed var(--border); padding-top: 1rem; }
.outcomes summary {
  cursor: pointer; font-weight: 600; color: var(--accent);
  list-style: none; padding: 0.3rem 0;
}
.outcomes summary::-webkit-details-marker { display: none; }
.outcomes summary::before { content: "▸ "; transition: transform 0.15s ease; display: inline-block; }
.outcomes[open] summary::before { content: "▾ "; }
.outcome-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem; margin-top: 1rem;
}
.outcome { padding: 1rem; background: var(--surface-2); border-radius: var(--radius-sm); border: 1px solid var(--border); }
.outcome-tag { font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin: 0 0 0.25rem; }
.outcome h4 { font-size: 0.98rem; margin-bottom: 0.4rem; }
.outcome p { font-size: 0.88rem; color: var(--text-muted); margin: 0; }

/* ===== Skills ===== */
.skills-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem; margin-top: 2.5rem;
}
.skill-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.skill-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.skill-card h3 { font-size: 0.98rem; margin-bottom: 0.8rem; color: var(--accent); }
.chip-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip-list li {
  font-size: 0.82rem; padding: 0.32rem 0.7rem; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--text);
}

.cert-row { margin-top: 2.5rem; text-align: center; }
.cert-row ul { list-style: none; padding: 0; display: inline-flex; gap: 1.4rem; flex-wrap: wrap; justify-content: center; }
.cert-row li {
  padding: 0.6rem 1rem; border: 1px solid var(--border); border-radius: 999px;
  background: var(--surface); font-size: 0.92rem;
}
.cert-row-link { margin-top: 1rem; font-size: 0.92rem; }
.cert-row-link a { font-weight: 600; }

/* ===== Certifications page ===== */
.certs-hero { padding-bottom: clamp(2rem, 4vw, 3rem); }
.cert-tabs {
  display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem;
}
.cert-tab {
  display: inline-flex; align-items: center;
  padding: 0.55rem 1rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font-size: 0.9rem; font-weight: 500;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.cert-tab:hover {
  border-color: var(--accent); color: var(--accent);
  text-decoration: none; transform: translateY(-1px);
}

.cert-header {
  display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: end;
  margin-bottom: 2.5rem;
}
.cert-header-text h2 { margin: 0.3rem 0 0.6rem; }
.cert-header-text .subtle { margin: 0; max-width: 720px; }
.cert-score {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; padding: 1.1rem 1.4rem; border-radius: var(--radius);
  text-align: center; box-shadow: var(--shadow-md);
  min-width: 180px;
}
.cert-score strong {
  display: block; font-size: 2rem; font-weight: 800; line-height: 1;
}
.cert-score span {
  display: block; font-size: 0.82rem; opacity: 0.95; margin-top: 0.35rem;
}
.cert-score-scale { font-size: 0.78rem !important; opacity: 0.85 !important; }

.cert-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
}
.cert-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem 1.5rem;
  box-shadow: var(--shadow-sm);
}
.cert-card h3 {
  font-size: 1rem; margin-bottom: 0.9rem; color: var(--accent);
}
.cert-card-wide { grid-column: 1 / -1; }
.cert-card .subtle { font-size: 0.9rem; }

.cert-list { padding-left: 1.2rem; margin: 0; }
.cert-list li { margin-bottom: 0.45rem; color: var(--text-muted); }
.cert-list li strong { color: var(--text); font-weight: 600; }
.cert-list li em { color: var(--text); font-style: italic; }

.domain-list { list-style: none; padding: 0; margin: 0; }
.domain-list li { margin-bottom: 0.85rem; }
.domain-list li:last-child { margin-bottom: 0; }
.domain-row {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 0.35rem;
}
.domain-name { font-weight: 600; color: var(--text); font-size: 0.95rem; }
.domain-weight { color: var(--accent); font-weight: 700; font-size: 0.9rem; }
.domain-bar {
  height: 6px; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 999px; overflow: hidden;
}
.domain-bar span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
}

.scenario-list { list-style: none; padding: 0; margin: 0; }
.scenario-list li {
  display: flex; gap: 0.8rem; padding: 0.7rem 0;
  border-bottom: 1px dashed var(--border);
  color: var(--text-muted); font-size: 0.93rem;
  align-items: baseline;
}
.scenario-list li:last-child { border-bottom: none; }
.scenario-tag {
  flex-shrink: 0;
  font-family: var(--font-mono); font-size: 0.78rem;
  padding: 0.18rem 0.45rem; border-radius: 6px;
  background: var(--accent-soft); color: var(--accent);
  font-weight: 700; letter-spacing: 0.02em;
}

.resource-list { list-style: none; padding: 0; margin: 0; }
.resource-list li {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.92rem; flex-wrap: wrap;
}
.resource-list li:last-child { border-bottom: none; }
.resource-name { color: var(--text); font-weight: 500; }
.resource-meta { color: var(--text-muted); font-size: 0.85rem; }

.back-link { text-align: center; margin-top: 2.5rem; }
.back-link a { color: var(--text-muted); font-size: 0.9rem; }
.back-link a:hover { color: var(--accent); }

.cheatsheet-cta {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  margin: 0 0 2.5rem; padding: 1rem 1.2rem;
  background: var(--accent-soft); border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}
.cheatsheet-cta .subtle { margin: 0; font-size: 0.92rem; }

/* Cert hash router: hero by default, single cert detail when .is-active.
   Solely JS-controlled — :target would leave cert detail visible after
   pushState clears the fragment (Chromium does not always re-evaluate :target
   on pushState that changes the hash). */
html.js .cert-detail { display: none; }
html.js .cert-detail.is-active { display: block; }
html.js.cert-open .certs-hero { display: none; }

.cert-back { display: none; margin: 0 0 1.5rem; font-size: 0.9rem; }
html.js .cert-back { display: block; }
.cert-back a {
  display: inline-flex; align-items: center;
  color: var(--text-muted);
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-weight: 500;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.cert-back a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

/* Recap details — collapsible items for gap analysis & topic patterns */
.recap-list { list-style: none; padding: 0; margin: 0; }
.recap-list li {
  border-bottom: 1px dashed var(--border);
  padding: 0.55rem 0;
}
.recap-list li:last-child { border-bottom: none; }
.recap-item details summary {
  cursor: pointer;
  font-weight: 600; color: var(--text);
  font-size: 0.94rem;
  list-style: none; padding: 0.1rem 0;
}
.recap-item details summary::-webkit-details-marker { display: none; }
.recap-item details summary::before {
  content: "▸  "; color: var(--accent);
  display: inline-block; transition: transform 0.15s ease;
}
.recap-item details[open] summary::before { content: "▾  "; }
.recap-item details summary:hover { color: var(--accent); }
.recap-item details summary code,
.recap-item details p code {
  font-family: var(--font-mono); font-size: 0.82rem;
  background: var(--surface-2); padding: 0.05rem 0.35rem;
  border-radius: 4px; border: 1px solid var(--border);
}
.recap-item details p {
  color: var(--text-muted); font-size: 0.89rem;
  margin: 0.45rem 0 0.2rem 1.3rem;
  line-height: 1.55;
}
.recap-item details p strong { color: var(--text); font-weight: 600; }
.recap-item details p em { color: var(--text); font-style: italic; }

/* Recap prompt — collapsible block for the full exam-generator system prompt */
.recap-prompt summary {
  cursor: pointer; font-weight: 600; color: var(--accent);
  list-style: none;
  padding: 0.55rem 0.85rem; margin-bottom: 0.8rem;
  background: var(--accent-soft); border-radius: var(--radius-sm);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  display: inline-block;
  font-size: 0.92rem;
}
.recap-prompt summary::-webkit-details-marker { display: none; }
.recap-prompt summary::before { content: "▸  "; }
.recap-prompt[open] summary::before { content: "▾  "; }
.recap-prompt summary:hover {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
}
.recap-prompt .cs-code {
  max-height: 520px; overflow: auto;
  margin: 0;
}

@media (max-width: 720px) {
  .cert-header { grid-template-columns: 1fr; }
  .cert-score { justify-self: start; min-width: 0; }
  .cert-grid { grid-template-columns: 1fr; }
  .recap-prompt .cs-code { max-height: 380px; font-size: 0.78rem; }
}

/* ===== Cheatsheet page ===== */
.cheatsheet-hero { padding-bottom: clamp(2rem, 4vw, 3rem); }
.cs-toc {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 2rem;
}
.cs-toc a {
  display: inline-flex; align-items: center;
  padding: 0.45rem 0.85rem; border-radius: 999px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font-size: 0.85rem; font-weight: 500;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.cs-toc a:hover {
  border-color: var(--accent); color: var(--accent); text-decoration: none;
}

.cs-section { padding-top: clamp(3rem, 5vw, 4rem); padding-bottom: clamp(3rem, 5vw, 4rem); }
.cs-section-head { margin-bottom: 2rem; padding-bottom: 1rem; border-bottom: 1px solid var(--border); }
.cs-section-head h2 { margin: 0 0 0.3rem; }
.cs-section-head .subtle { margin: 0; }
.cs-section h3 {
  font-size: 1rem; margin: 2rem 0 0.8rem; color: var(--accent);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.cs-section h3:first-of-type { margin-top: 1rem; }

/* Tables */
.table-wrap { overflow-x: auto; margin: 0 0 1.5rem; border-radius: var(--radius); border: 1px solid var(--border); }
.cs-table {
  width: 100%; border-collapse: collapse;
  font-size: 0.88rem; background: var(--surface);
}
.cs-table thead th {
  text-align: left; padding: 0.7rem 0.9rem;
  background: var(--surface-2); color: var(--text);
  font-weight: 600; font-size: 0.85rem;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.01em; white-space: nowrap;
}
.cs-table tbody td {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted); vertical-align: top; line-height: 1.5;
}
.cs-table tbody tr:last-child td { border-bottom: none; }
.cs-table tbody tr:hover { background: var(--surface-2); }
.cs-table td strong, .cs-table td code {
  color: var(--text);
}
.cs-table code {
  font-family: var(--font-mono); font-size: 0.84em;
  padding: 0.1em 0.35em; border-radius: 4px;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
}

/* Callouts */
.cs-callout-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1rem; margin: 0 0 1.5rem;
}
.cs-callout {
  padding: 1rem 1.2rem; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface);
  font-size: 0.9rem;
}
.cs-callout h4 {
  font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.12em;
  margin: 0 0 0.7rem; font-weight: 700;
}
.cs-callout ul { padding-left: 1.1rem; margin: 0; }
.cs-callout li { margin-bottom: 0.35rem; color: var(--text-muted); }
.cs-callout li:last-child { margin-bottom: 0; }
.cs-callout li code, .cs-callout code, .cs-callout strong { color: var(--text); }
.cs-callout-good {
  border-left: 3px solid #2ea043;
  background: color-mix(in srgb, #2ea043 6%, var(--surface));
}
.cs-callout-good h4 { color: #3fb950; }
.cs-callout-bad {
  border-left: 3px solid #f85149;
  background: color-mix(in srgb, #f85149 6%, var(--surface));
}
.cs-callout-bad h4 { color: #ff7b72; }
.cs-callout-warn {
  border-left: 3px solid #d29922;
  background: color-mix(in srgb, #d29922 8%, var(--surface));
  margin: 0 0 1.5rem;
}
.cs-callout-warn strong { color: var(--text); }
.cs-callout-info {
  border-left: 3px solid #58a6ff;
  background: color-mix(in srgb, #58a6ff 6%, var(--surface));
  margin: 0 0 1.5rem;
}

/* Code blocks */
.cs-code {
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1rem 1.2rem;
  overflow-x: auto; margin: 0 0 1.5rem;
  font-family: var(--font-mono); font-size: 0.85rem; line-height: 1.55;
}
.cs-code code { color: var(--text); background: none; padding: 0; border: 0; }

@media (max-width: 720px) {
  .cs-callout-grid { grid-template-columns: 1fr; }
  .cs-table { font-size: 0.82rem; }
  .cs-table thead th, .cs-table tbody td { padding: 0.55rem 0.7rem; }
}

/* ===== Projects (repo grid) ===== */
.repo-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.2rem; margin-top: 2.5rem;
}
.repo-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.3rem;
  display: flex; flex-direction: column; gap: 0.6rem;
  text-decoration: none; color: var(--text);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  box-shadow: var(--shadow-sm);
}
.repo-card:hover {
  transform: translateY(-3px); border-color: var(--accent);
  box-shadow: var(--shadow-md); text-decoration: none;
}
.repo-name { font-weight: 700; font-size: 1.02rem; display: flex; align-items: center; gap: 0.4rem; }
.repo-name svg { color: var(--text-muted); flex-shrink: 0; }
.repo-desc { font-size: 0.9rem; color: var(--text-muted); margin: 0; flex: 1; }
.repo-meta {
  display: flex; gap: 1rem; flex-wrap: wrap; font-size: 0.8rem; color: var(--text-muted);
  align-items: center; margin-top: 0.4rem;
}
.repo-meta .lang { display: inline-flex; align-items: center; gap: 0.4rem; }
.lang-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.repo-loading {
  text-align: center; padding: 2rem; color: var(--text-muted);
  grid-column: 1 / -1;
}
.repo-loading::after {
  content: ""; display: inline-block; width: 14px; height: 14px;
  border: 2px solid currentColor; border-top-color: transparent;
  border-radius: 50%; margin-left: 0.6rem; vertical-align: -2px;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== Achievements ===== */
.ach-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem; margin-top: 2.5rem;
}
.ach-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.4rem; box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--accent);
}
.ach-card h3 { margin-bottom: 0.5rem; font-size: 1.05rem; }
.ach-tag { font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); font-weight: 700; margin: 0 0 0.4rem; }
.ach-card p { color: var(--text-muted); font-size: 0.92rem; }
.ach-card a { font-weight: 600; }

/* ===== Education ===== */
.edu-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.2rem; margin-top: 2.5rem;
}
.edu-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.5rem; box-shadow: var(--shadow-sm);
}
.edu-card h3 { margin-bottom: 0.4rem; }
.edu-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.6rem; }

/* ===== Contact ===== */
.contact-inner { max-width: 720px; margin: 0 auto; text-align: center; }
.contact-actions { display: flex; gap: 0.7rem; justify-content: center; flex-wrap: wrap; margin-top: 2rem; }

/* ===== Footer ===== */
.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--border); margin-top: 0; background: var(--bg); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.6rem; }
.footer-inner p { margin: 0; font-size: 0.88rem; color: var(--text-muted); }

/* ===== Reveal-on-scroll ===== */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== Responsive ===== */
@media (max-width: 880px) {
  .primary-nav {
    position: fixed; top: 64px; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 0.5rem 1rem;
    background: var(--bg); border-bottom: 1px solid var(--border);
    display: none;
  }
  .primary-nav.open { display: flex; }
  .primary-nav a { padding: 0.85rem 0.4rem; border-bottom: 1px solid var(--border); }
  .primary-nav a:last-child { border-bottom: none; }
  .menu-only { display: grid; }

  .two-col { grid-template-columns: 1fr; gap: 2rem; }
  .about-media { max-width: 220px; }

  .hero-stats { grid-template-columns: repeat(2, 1fr); }

  .timeline::before { left: 8px; }
  .t-item { grid-template-columns: 1fr; gap: 0.6rem; padding-left: 2.2rem; }
  .t-item::before { left: 2px; top: 6px; }
  .t-meta { text-align: left; padding-right: 0; }
  .t-card { margin-left: 0; }
}

@media (max-width: 480px) {
  .nav-row { gap: 0.6rem; }
  .brand-name { display: none; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}