:root {
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-soft: #eff6ff;
  --color-border: #e2e8f0;
  --color-tag-bg: #eff6ff;
  --color-tag-text: #1e40af;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 760px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0b0f14;
    --color-surface: #151b24;
    --color-text: #f0f4f8;
    --color-text-muted: #94a3b8;
    --color-accent: #60a5fa;
    --color-accent-hover: #93c5fd;
    --color-accent-soft: #1e293b;
    --color-border: #243044;
    --color-tag-bg: #1e3a5f;
    --color-tag-text: #bfdbfe;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-tap-highlight-color: color-mix(in srgb, var(--color-accent) 20%, transparent);
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: max(var(--spacing-md), env(safe-area-inset-left));
  padding-right: max(var(--spacing-md), env(safe-area-inset-right));
}

/* Header */
.site-header {
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: env(safe-area-inset-top);
}

.site-header-inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: var(--spacing-sm) var(--spacing-md);
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-family: inherit;
}

.nav-toggle-bar {
  display: block;
  width: 1.125rem;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.site-logo-avatar {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
}

.site-logo:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.site-nav-wrap {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--spacing-xs) 0;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--color-accent);
  text-decoration: none;
}

.site-header-cta {
  flex-shrink: 0;
  justify-self: end;
}

/* Main */
main {
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  min-height: calc(100vh - 180px);
}

main > .container {
  margin-bottom: var(--spacing-2xl);
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 var(--spacing-sm);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: var(--spacing-xl) 0 var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-xs);
}

p {
  margin: 0 0 var(--spacing-md);
}

.lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 42rem;
}

.profile-summary {
  max-width: 42rem;
}

.profile-summary .lead {
  margin-bottom: var(--spacing-md);
}

.profile-summary .lead:last-child {
  margin-bottom: 0;
}

.hero .profile-summary .lead {
  line-height: 1.7;
}

.subtitle {
  font-size: 1.125rem;
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.page-intro {
  margin-bottom: var(--spacing-xl);
}

.muted-note {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

/* Hero */
.hero {
  margin-bottom: var(--spacing-2xl);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 55%),
    var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
}

.hero-eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

/* Page header */
.page-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.page-header-text h1 {
  margin-bottom: var(--spacing-xs);
}

.page-header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.75rem;
  padding: 0.625rem 1.125rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary,
.bdownloadtn-.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--color-accent) 35%, transparent);
}

.btn-primary:hover,
.btn-download.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-download {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  border-color: color-mix(in srgb, var(--color-accent) 25%, transparent);
}

.btn-download:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-share {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
  cursor: pointer;
  font-family: inherit;
}

.btn-share:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.action-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  align-items: center;
}

.action-group-vertical {
  flex-direction: column;
  align-items: flex-start;
}

.share-toast {
  position: fixed;
  left: 50%;
  bottom: max(1.5rem, env(safe-area-inset-bottom));
  transform: translateX(-50%) translateY(120%);
  padding: 0.75rem 1.125rem;
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
  z-index: 200;
}

.share-toast.is-visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.quick-link-card-share {
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

.quick-link-card-share:hover {
  color: inherit;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}

.btn-ghost:hover {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.btn-compact {
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
}

.btn-icon {
  font-size: 1rem;
  line-height: 1;
}

/* Cards */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow);
}

.card-interactive {
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.card-interactive:hover {
  border-color: color-mix(in srgb, var(--color-accent) 35%, var(--color-border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.card-meta {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.role-focus {
  font-size: 0.9375rem;
  color: var(--color-accent);
  font-weight: 500;
  margin: 0 0 var(--spacing-sm);
}

.card-link {
  margin-top: var(--spacing-md);
  margin-bottom: 0;
}

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  list-style: none;
  margin: var(--spacing-md) 0 0;
  padding: 0;
}

.tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
}

/* Lists */
ul.bullet-list {
  margin: 0 0 var(--spacing-md);
  padding-left: 1.25rem;
}

ul.bullet-list li {
  margin-bottom: var(--spacing-xs);
}

.highlights {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-sm);
  list-style: none;
  padding: 0;
  margin: var(--spacing-lg) 0 0;
}

.highlights li {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

.skill-category {
  margin-bottom: var(--spacing-lg);
}

.skill-category h3 {
  margin-bottom: var(--spacing-sm);
}

.ai-section {
  background: var(--color-accent-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.ai-section h3 {
  color: var(--color-tag-text);
  margin-bottom: var(--spacing-md);
}

/* Quick links */
.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.quick-link-card {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.quick-link-card:hover {
  text-decoration: none;
  border-color: color-mix(in srgb, var(--color-accent) 35%, var(--color-border));
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.quick-link-card-accent {
  background: var(--color-accent-soft);
  border-color: color-mix(in srgb, var(--color-accent) 25%, var(--color-border));
}

.quick-link-label {
  font-weight: 600;
  color: var(--color-text);
}

.quick-link-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* CTA banner */
.cta-banner {
  margin-top: var(--spacing-2xl);
  padding: 0 var(--spacing-md) var(--spacing-2xl);
}

.cta-banner-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--color-accent) 14%, var(--color-surface)), var(--color-surface));
  border: 1px solid color-mix(in srgb, var(--color-accent) 22%, var(--color-border));
  box-shadow: var(--shadow-md);
}

.cta-banner-text h2 {
  margin: 0 0 var(--spacing-xs);
  padding: 0;
  border: none;
  font-size: 1.375rem;
}

.cta-banner-text p {
  margin: 0;
  color: var(--color-text-muted);
}

.cta-banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

/* Contact */
.contact-card {
  margin-top: var(--spacing-md);
}

.contact-links {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-lg);
}

.contact-links li {
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
}

.contact-links strong {
  display: block;
  min-width: 0;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-links a {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.contact-highlight {
  font-weight: 600;
}

.contact-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.empty-state {
  padding: var(--spacing-xl);
  text-align: center;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
}

.empty-state code {
  font-size: 0.875rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) 0;
  background: var(--color-surface);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-brand strong {
  display: block;
  margin-bottom: var(--spacing-xs);
}

.footer-brand p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-nav a,
.footer-link {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  text-decoration: none;
}

.footer-nav a:hover,
.footer-link:hover {
  color: var(--color-accent);
}

.footer-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.footer-copy {
  margin: 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
}

/* Responsive */
@media (min-width: 721px) {
  .site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .site-nav-wrap {
    flex: 1;
    grid-column: auto;
  }

  .nav-toggle {
    display: none !important;
  }
}

@media (max-width: 720px) {
  .site-header-inner {
    grid-template-columns: 1fr auto;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-header-cta {
    display: none;
  }

  .site-nav-wrap {
    display: none;
    grid-column: 1 / -1;
    justify-content: stretch;
    padding-bottom: var(--spacing-sm);
  }

  .site-nav-wrap.is-open {
    display: flex;
  }

  .site-nav {
    width: 100%;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-surface);
  }

  .site-nav li {
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav li:last-child {
    border-bottom: none;
  }

  .site-nav a {
    width: 100%;
    padding: var(--spacing-md);
    min-height: 3rem;
  }

  body.nav-open {
    overflow: hidden;
  }

  main {
    padding-top: var(--spacing-xl);
  }

  .hero {
    padding: var(--spacing-lg);
  }

  .card {
    padding: var(--spacing-md);
  }

  .page-header {
    flex-direction: column;
  }

  .page-header-actions,
  .hero-actions,
  .cta-banner-actions,
  .contact-card-actions {
    width: 100%;
  }

  .page-header-actions .btn,
  .hero-actions .btn,
  .cta-banner-actions .btn,
  .contact-card-actions .btn,
  .action-group .btn {
    flex: 1 1 calc(50% - var(--spacing-sm));
  }

  .card-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .highlights,
  .quick-links-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .cta-banner-inner {
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-lg);
  }

  .cta-banner {
    padding-bottom: max(var(--spacing-2xl), env(safe-area-inset-bottom));
  }
}

@media (max-width: 420px) {
  .hero-actions .btn,
  .cta-banner-actions .btn,
  .contact-card-actions .btn,
  .page-header-actions .btn {
    flex: 1 1 100%;
  }

  .site-logo {
    white-space: normal;
    line-height: 1.25;
    max-width: calc(100vw - 5rem);
  }
}