:root,
:root[data-theme="dark"] {
  --bg: #0f1419;
  --bg-deep: #0a0e13;
  --bg-elevated: #1a212b;
  --bg-hover: #232c38;
  --border: #2c3442;
  --border-strong: #4a5568;
  --text: #f1f5f9;
  --text-muted: #cbd5e1;
  --text-subtle: #94a3b8;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --accent-hover: #bae6fd;
  --accent-bg: rgba(125, 211, 252, 0.14);
  --accent-2: #c084fc;
  --accent-2-bg: rgba(192, 132, 252, 0.14);
  --accent-3: #34d399;
  --success: #4ade80;
  --danger: #fb7185;
  --warning: #fbbf24;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 24px rgba(125, 211, 252, 0.18);
  --bg-grad-1: rgba(125, 211, 252, 0.08);
  --bg-grad-2: rgba(192, 132, 252, 0.07);
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f7f8fa;
  --bg-deep: #ffffff;
  --bg-elevated: #ffffff;
  --bg-hover: #eef1f6;
  --border: #d8dde5;
  --border-strong: #b8c1cd;
  --text: #0f1419;
  --text-muted: #3f4a5a;
  --text-subtle: #5a6675;
  --accent: #0369a1;
  --accent-strong: #075985;
  --accent-hover: #0284c7;
  --accent-bg: rgba(3, 105, 161, 0.10);
  --accent-2: #7c3aed;
  --accent-2-bg: rgba(124, 58, 237, 0.10);
  --accent-3: #047857;
  --success: #047857;
  --danger: #b91c1c;
  --warning: #b45309;
  --shadow: 0 4px 16px rgba(15, 20, 25, 0.08);
  --shadow-glow: 0 0 24px rgba(3, 105, 161, 0.12);
  --bg-grad-1: rgba(3, 105, 161, 0.06);
  --bg-grad-2: rgba(124, 58, 237, 0.05);
  color-scheme: light;
}

:root {
  --radius: 10px;
  --radius-sm: 6px;
  --max-width: 1040px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: "SF Mono", Monaco, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(900px 500px at 85% -10%, var(--bg-grad-1), transparent 60%),
    radial-gradient(700px 400px at -10% 10%, var(--bg-grad-2), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a:focus-visible, button:focus-visible, .btn:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--accent-hover); text-decoration: underline; }

h1, h2, h3, h4 { color: var(--text); line-height: 1.25; margin-top: 1.5em; margin-bottom: 0.5em; }
h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.2rem; }

p { margin: 0.75em 0; }

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

code {
  font-family: var(--font-mono);
  background: var(--bg-elevated);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}
pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  overflow-x: auto;
}
pre code { background: transparent; padding: 0; }

blockquote {
  border-left: 3px solid var(--accent);
  margin: 1rem 0;
  padding: 0.25rem 1rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border-radius: 0 var(--radius) var(--radius) 0;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Navbar */
.navbar {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  font-family: var(--font-mono);
}
.nav-logo:hover { color: var(--accent); text-decoration: none; }
.nav-links {
  list-style: none;
  display: flex;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: block;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--text); background: var(--bg-hover); text-decoration: none; }
.nav-links a.active { color: var(--text); background: var(--accent-bg); }

/* Layout */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

/* Hero */
.hero {
  padding: 3rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
}
.hero h1 {
  font-size: 2.5rem;
  margin: 0 0 0.5rem;
}
.hero .name { color: var(--accent); }
.hero p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 640px;
}

/* Section heading */
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 2.5rem 0 1rem;
}
.section-heading h2 { margin: 0; }
.section-heading a { font-size: 0.9rem; }

/* Card grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
  display: flex;
  flex-direction: column;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.card h3 a { color: var(--text); }
.card h3 a:hover { color: var(--accent); text-decoration: none; }
.card .card-meta {
  font-size: 0.85rem;
  color: var(--text-subtle);
  margin-bottom: 0.5rem;
}
.card .card-excerpt {
  color: var(--text-muted);
  font-size: 0.95rem;
  flex: 1;
}
.card .card-excerpt p { margin: 0.25em 0; }

/* Tags */
.tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.5rem 0; }
.tag {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.8rem;
  text-decoration: none;
}
.tag:hover { background: var(--accent-bg); filter: brightness(1.15); text-decoration: none; }

/* Article (post detail) */
.article-header {
  margin: 1.5rem 0 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.article-header h1 { margin: 0 0 0.5rem; }
.article-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.article-body { font-size: 1.05rem; line-height: 1.75; }
.article-body p { margin: 1em 0; }

/* Inline post figure */
.post-figure {
  margin: 1.75rem 0;
  text-align: center;
}
.post-figure img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin: 0 auto;
}
.post-figure figcaption {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  font-style: italic;
}

/* Cover image */
.post-cover {
  margin: 1rem 0 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}
.post-cover img { width: 100%; height: auto; display: block; }

/* Gallery */
.post-gallery { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--border); }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.gallery-grid figure {
  margin: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.gallery-grid img { aspect-ratio: 4/3; object-fit: cover; }
.gallery-grid figcaption { padding: 0.5rem 0.75rem; font-size: 0.85rem; color: var(--text-muted); }

/* Comments */
.comments { margin-top: 2.5rem; }
.comment {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
}
.comment .info {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.comment p:last-child { margin-bottom: 0; }

/* Forms */
.form-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  max-width: 560px;
  margin: 1rem auto;
}
form p { margin: 0.75rem 0; }
form label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
}
input[type=text], input[type=email], input[type=url], textarea, select {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-bg);
}
textarea { min-height: 140px; resize: vertical; }

input[type=submit], button.btn-primary, .btn {
  display: inline-block;
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.6rem 1.2rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease;
  text-decoration: none;
}
input[type=submit]:hover, button.btn-primary:hover, .btn:hover {
  background: var(--accent-hover);
  text-decoration: none;
}

.errorlist {
  list-style: none;
  padding: 0;
  margin: 0.25rem 0;
  color: var(--danger);
  font-size: 0.85rem;
}

.flash-success {
  background: rgba(63, 185, 80, 0.1);
  border: 1px solid var(--success);
  color: var(--success);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin: 1rem 0;
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin: 2.5rem 0 1rem;
  font-size: 0.95rem;
}
.pagination a, .pagination .current {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}
.pagination a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}
.pagination .current {
  background: var(--bg-elevated);
  color: var(--text);
}

/* Footer */
footer {
  margin-top: 4rem;
  padding: 2rem 1.25rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}
footer a { margin: 0 0.5rem; }

/* Hero split layout (home) */
.hero-split {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2.5rem;
  align-items: center;
}
.hero-split .hero-text { min-width: 0; }
.hero-split .eyebrow {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  margin-bottom: 1rem;
  border: 1px solid rgba(125, 211, 252, 0.25);
}
.hero-split h1 .name {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-split .value-prop {
  font-size: 1.15rem;
  color: var(--text);
  max-width: 640px;
  margin-bottom: 0.75rem;
}
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}
.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--border-strong);
  position: relative;
  background: var(--bg-elevated);
  box-shadow: var(--shadow);
}
.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.profile-photo .photo-fallback {
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 4rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  color: var(--bg);
}
.cert-badge {
  width: 200px;
  text-align: center;
}
.cert-badge img { max-width: 100%; height: auto; }
.cert-badge .cert-fallback {
  display: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 0.9rem;
  font-size: 0.85rem;
}
.cert-badge .cert-fallback-label {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  font-size: 0.7rem;
  margin-bottom: 0.2rem;
}
.cert-badge .cert-fallback-title { color: var(--text); font-weight: 600; }

/* Project card with cover image */
.proj-card.has-cover { padding: 0; overflow: hidden; }
.proj-card.has-cover .proj-cover {
  display: block;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg);
}
.proj-card.has-cover .proj-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.proj-card.has-cover:hover .proj-cover img { transform: scale(1.04); }
.proj-card.has-cover .proj-body { padding: 1.25rem 1.4rem 1.4rem; display: flex; flex-direction: column; flex: 1; }
.proj-card.has-cover .proj-body h3 { margin-top: 0; }
.proj-summary { color: var(--text-muted); font-size: 0.95rem; margin: 0.4rem 0 0.9rem; }

/* YouTube embed */
.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  margin: 1.5rem 0;
  background: #000;
}
.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Footer meta */
.footer-meta {
  font-size: 0.8rem;
  color: var(--text-subtle);
  margin-top: 0.3rem;
}

/* Theme toggle */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  transition: all 0.15s ease;
}
.theme-toggle:hover { background: var(--bg-hover); color: var(--text); border-color: var(--border-strong); }
.theme-toggle .theme-icon-light { display: none; }
[data-theme="light"] .theme-toggle .theme-icon-dark { display: none; }
[data-theme="light"] .theme-toggle .theme-icon-light { display: inline; }

/* Project link buttons */
.proj-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  transition: all 0.15s ease;
}
.proj-link-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}
.icon-gh { vertical-align: middle; }

.section-heading .hint {
  font-size: 0.8rem;
  color: var(--text-subtle);
  font-style: italic;
}

/* Summary block */
.summary-block {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-2);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
}
.summary-block p { margin: 0.7rem 0; }
.summary-block p:first-child { margin-top: 0; }
.summary-block p:last-child { margin-bottom: 0; }

/* Video fallback */
.video-fallback {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: -1rem;
  margin-bottom: 1.5rem;
}

/* 404 */
.error-hero {
  text-align: center;
  padding: 4rem 1rem;
}
.error-code {
  font-family: var(--font-mono);
  font-size: 8rem;
  font-weight: 800;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.5rem;
}
.error-hero h1 { margin: 0.5rem 0; }
.error-lede { color: var(--text-muted); max-width: 600px; margin: 0 auto 0.5rem; }
.error-sub { color: var(--text-subtle); max-width: 600px; margin: 0 auto 2rem; font-size: 0.95rem; }
.error-hero .social-row { justify-content: center; }
@media (max-width: 768px) {
  .error-code { font-size: 5rem; }
}

/* Portfolio hero */
.portfolio-hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.5rem;
  position: relative;
}
.portfolio-hero .eyebrow {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  background: var(--accent-bg);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  margin-bottom: 1rem;
  border: 1px solid rgba(125, 211, 252, 0.25);
}
.portfolio-hero h1 {
  font-size: 3rem;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.portfolio-hero h1 .name {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.portfolio-hero .role {
  color: var(--text-muted);
  font-size: 1.2rem;
  max-width: 720px;
  margin: 0 0 1rem;
}
.portfolio-hero .lede {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 720px;
}
.portfolio-hero .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  margin-top: 1.25rem;
  color: var(--text-subtle);
  font-size: 0.9rem;
}
.portfolio-hero .meta-row span::before {
  content: "▸ ";
  color: var(--accent);
}

/* Social link row */
.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.5rem;
}
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.15s ease;
}
.social-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}
.social-link.primary {
  background: var(--accent-bg);
  border-color: rgba(125, 211, 252, 0.3);
  color: var(--accent);
}

/* Skills grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.skill-group {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.skill-group h4 {
  margin: 0 0 0.6rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 600;
}
.skill-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.skill-chip {
  padding: 0.2rem 0.65rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Project cards (resume) */
.project-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1rem;
}
.proj-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  transition: all 0.18s ease;
}
.proj-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.proj-card h3 { margin: 0 0 0.35rem; font-size: 1.15rem; }
.proj-card h3 a { color: var(--text); }
.proj-card h3 a:hover { color: var(--accent); text-decoration: none; }
.proj-card .proj-tech {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-subtle);
  margin-bottom: 0.6rem;
}
.proj-card ul {
  margin: 0.35rem 0 0.9rem 1rem;
  padding: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.proj-card ul li { margin: 0.3rem 0; }
.proj-card .proj-links {
  margin-top: auto;
  padding-top: 0.5rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.proj-card .proj-links a {
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* Experience entry */
.exp-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.4rem 1.5rem;
}
.exp-card .exp-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}
.exp-card .exp-title { font-size: 1.1rem; font-weight: 600; color: var(--text); }
.exp-card .exp-company { color: var(--accent); }
.exp-card .exp-period {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-subtle);
}
.exp-card .exp-tech {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-subtle);
  margin: 0.3rem 0 0.7rem;
}
.exp-card ul { margin: 0.4rem 0 0 1.1rem; padding: 0; color: var(--text-muted); }
.exp-card ul li { margin: 0.4rem 0; }
.exp-card strong { color: var(--text); }

/* Cert / education badges */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.badge {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  flex: 1 1 280px;
}
.badge .badge-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  font-family: var(--font-mono);
  margin-bottom: 0.3rem;
}
.badge .badge-title { font-weight: 600; color: var(--text); }
.badge .badge-meta { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.2rem; }

/* Responsive */
@media (max-width: 768px) {
  .navbar-inner { height: auto; flex-wrap: wrap; padding: 0.75rem 1rem; }
  .nav-links { flex-wrap: wrap; }
  main { padding: 1.5rem 1rem; }
  .hero { padding: 2rem 0 1.5rem; }
  .hero h1 { font-size: 1.85rem; }
  .portfolio-hero { padding: 2.5rem 0 2rem; }
  .portfolio-hero h1 { font-size: 2.1rem; }
  .portfolio-hero .role { font-size: 1.05rem; }
  .hero-split { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero-visual { flex-direction: row; flex-wrap: wrap; justify-content: flex-start; }
  .profile-photo { width: 120px; height: 120px; }
  .cert-badge { width: 180px; }
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.3rem; }
}