@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("./assets/fonts/inter-400.woff2") format("woff2");
}

@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("./assets/fonts/inter-600.woff2") format("woff2");
}

@font-face {
  font-family: Inter;
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("./assets/fonts/inter-700.woff2") format("woff2");
}

:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --text: #e6edf3;
  --muted: #9da7b3;
  --accent: #58a6ff;
  --accent-soft: rgba(88, 166, 255, 0.14);
  --surface: #1f2630;
  --border: #2f3948;
  --border-strong: #3d4f66;
  --success-bg: #13261f;
  --success-border: #2d6a4f;
  --success-text: #b7e4c7;
  --error-bg: #2a1518;
  --error-border: #6e2c2c;
  --error-text: #f0c4c4;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --bg-alt: #ffffff;
    --text: #1f2328;
    --muted: #59636e;
    --accent: #0969da;
    --accent-soft: rgba(9, 105, 218, 0.1);
    --surface: #f0f3f6;
    --border: #d1d9e0;
    --border-strong: #b8c0cc;
    --success-bg: #e6f4ea;
    --success-border: #8fd19e;
    --success-text: #116329;
    --error-bg: #fde8e8;
    --error-border: #f5a5a5;
    --error-text: #8a1f1f;
  }

  .site-header {
    background: rgba(246, 248, 250, 0.92);
  }

  .profile-card {
    background: linear-gradient(180deg, #ffffff 0%, #f0f3f6 100%);
  }

  .stat {
    background: #ffffff;
  }

  .button {
    color: #ffffff;
  }
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

body {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

a {
  color: var(--accent);
}

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

.external-link::after {
  content: " ↗";
  font-size: 0.85em;
  opacity: 0.75;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  background: #ffffff;
  color: #000000;
  padding: 0.6rem 0.9rem;
  border-radius: 0.4rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(13, 17, 23, 0.88);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  min-height: 4rem;
  position: relative;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--bg-alt);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-header.nav-open .nav-toggle-bar:nth-child(2) {
  transform: translateY(0.45rem) rotate(45deg);
}

.site-header.nav-open .nav-toggle-bar:nth-child(3) {
  opacity: 0;
}

.site-header.nav-open .nav-toggle-bar:nth-child(4) {
  transform: translateY(-0.45rem) rotate(-45deg);
}

.brand {
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-list {
  list-style: none;
  display: flex;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.35rem 0.75rem;
  border-radius: 0.4rem;
  border-bottom: 2px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.nav-list a:hover {
  background: var(--accent-soft);
}

.nav-list a.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: var(--accent-soft);
}

.section-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
  margin: 0 0 0.35rem;
}

.section-title {
  margin: 0 0 1.25rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1.2;
}

.section-lead {
  color: var(--muted);
  max-width: 62ch;
  margin: 0;
  font-size: 1.05rem;
}

.hero {
  padding: 6rem 0 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr minmax(240px, 320px);
  gap: 2rem;
  align-items: center;
}

h1,
h2,
h3 {
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  margin: 0 0 1rem;
  font-weight: 700;
}

.hero-copy {
  color: var(--muted);
  max-width: 62ch;
  margin: 0 0 2rem;
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  background: var(--accent);
  color: #0c1726;
  text-decoration: none;
  border-radius: 0.6rem;
  padding: 0.75rem 1.1rem;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.button:hover {
  filter: brightness(1.08);
}

.button:active {
  transform: translateY(1px);
}

.button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

.button-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  filter: none;
}

.button-secondary:hover {
  background: var(--accent-soft);
  border-color: var(--border-strong);
}

.profile-card {
  background: linear-gradient(180deg, #19212e 0%, #111722 100%);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
}

.profile-image {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 0.8rem;
  border: 1px solid var(--border-strong);
}

.profile-note {
  color: var(--muted);
  margin: 0.8rem 0 0;
  font-size: 0.9rem;
}

.section {
  padding: 4rem 0;
  scroll-margin-top: 5rem;
}

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

.cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--surface);
  padding: 1.25rem;
  border-radius: 0.7rem;
  border: 1px solid var(--border);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover,
.card:focus-within {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.timeline-item {
  display: grid;
  grid-template-columns: 1.25rem 1fr;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.timeline-item:first-child {
  padding-top: 0;
}

.timeline-marker {
  position: relative;
  width: 0.75rem;
  height: 0.75rem;
  margin-top: 0.35rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.timeline-item:not(:last-child) .timeline-marker::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 1rem;
  width: 2px;
  height: calc(100% + 2.5rem);
  transform: translateX(-50%);
  background: var(--border);
}

.timeline-role {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.timeline-org {
  margin: 0.15rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.timeline-date {
  display: inline-block;
  margin-top: 0.35rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
}

.timeline-detail {
  margin: 0.65rem 0 0;
  color: var(--muted);
}

.cert-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.cert-badge {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 1.1rem;
  border-radius: 0.7rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-left: 3px solid var(--accent);
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.cert-badge:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.cert-name {
  font-weight: 600;
}

.cert-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 2rem;
  align-items: start;
}

.contact-links {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.contact-links a {
  font-weight: 600;
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.form-field {
  display: grid;
  gap: 0.35rem;
}

.form-field label {
  font-weight: 600;
  font-size: 0.95rem;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  font: inherit;
  font-size: 1rem;
  line-height: 1.4;
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--accent);
}

.form-field textarea {
  resize: vertical;
  min-height: 8rem;
}

.contact-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-status {
  margin: 0 0 1rem;
  padding: 0.85rem 1rem;
  border-radius: 0.5rem;
}

.form-status-success {
  border: 1px solid var(--success-border);
  background: var(--success-bg);
  color: var(--success-text);
}

.form-status-error {
  border: 1px solid var(--error-border);
  background: var(--error-bg);
  color: var(--error-text);
}

.mini-stats {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.stat {
  background: #131a25;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1.1rem;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.stat:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.stat-value {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.2;
}

.stat-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
}

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

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

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

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    top: calc(100% + 0.25rem);
    right: 0;
    left: 0;
    z-index: 20;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.25rem);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  }

  .site-header.nav-open .primary-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-list a {
    width: 100%;
    border-bottom: none;
  }

  .nav-list a.is-active {
    border-left: 3px solid var(--accent);
  }

  .hero {
    padding: 4rem 0 2.5rem;
  }

  .section {
    padding: 3rem 0;
  }

  .timeline-header {
    display: grid;
    gap: 0.15rem;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(1100px, 94vw);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
    text-align: center;
  }
}