:root {
  color-scheme: light;
  --navy: #0b2344;
  --navy-deep: #07162c;
  --teal: #2c9aa6;
  --teal-dim: #1f6f78;
  --ink: #122033;
  --muted: #4b5a6b;
  --paper: #f4f1ea;
  --paper-2: #e7e1d4;
  --card: #fffdf8;
  --line: rgba(11, 35, 68, 0.12);
  --shadow: 0 18px 40px rgba(11, 35, 68, 0.08);
  --bg: var(--paper);
  --fg: var(--ink);
  --heading: var(--navy);
  --accent: var(--teal-dim);
  --header-bg: rgba(244, 241, 234, 0.92);
  --button-fg: #f7f4ee;
  --chip-bg: var(--card);
  --radius: 18px;
  --wrap: 72rem;
  --font: "Avenir Next", "Segoe UI", system-ui, -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #07111d;
    --fg: #e7edf4;
    --heading: #f4f7fb;
    --muted: #9aabc0;
    --card: #0f1c2e;
    --paper-2: #0c1828;
    --line: rgba(231, 237, 244, 0.12);
    --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
    --accent: var(--teal);
    --header-bg: rgba(7, 17, 29, 0.92);
    --button-fg: #07111d;
    --chip-bg: #12243a;
  }
}

body:has(#theme-toggle:checked) {
  color-scheme: dark;
  --bg: #07111d;
  --fg: #e7edf4;
  --heading: #f4f7fb;
  --muted: #9aabc0;
  --card: #0f1c2e;
  --paper-2: #0c1828;
  --line: rgba(231, 237, 244, 0.12);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  --accent: var(--teal);
  --header-bg: rgba(7, 17, 29, 0.92);
  --button-fg: #07111d;
  --chip-bg: #12243a;
}

@media (prefers-color-scheme: dark) {
  body:has(#theme-toggle:checked) {
    color-scheme: light;
    --bg: var(--paper);
    --fg: var(--ink);
    --heading: var(--navy);
    --muted: #4b5a6b;
    --card: #fffdf8;
    --paper-2: #e7e1d4;
    --line: rgba(11, 35, 68, 0.12);
    --shadow: 0 18px 40px rgba(11, 35, 68, 0.08);
    --accent: var(--teal-dim);
    --header-bg: rgba(244, 241, 234, 0.92);
    --button-fg: #f7f4ee;
    --chip-bg: #fffdf8;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  min-height: 100vh;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--heading);
}

.wrap {
  width: min(var(--wrap), calc(100% - 2.5rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  background: var(--navy);
  color: #fff;
  padding: 0.6rem 0.9rem;
  z-index: 20;
}

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

.theme-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--heading);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
}

.brand-name {
  font-size: 0.92rem;
}

.nav {
  margin-left: auto;
  display: flex;
  gap: 1.1rem;
}

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

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

.theme-switch {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  user-select: none;
}

.theme-switch-track {
  width: 2.4rem;
  height: 1.3rem;
  border-radius: 999px;
  background: var(--paper-2);
  border: 1px solid var(--muted);
  position: relative;
}

.theme-toggle:focus-visible + .theme-switch .theme-switch-track {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.theme-switch-track::after {
  content: "";
  position: absolute;
  top: 0.12rem;
  left: 0.14rem;
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 50%;
  background: var(--accent);
  transition: transform 0.2s ease;
}

body:has(#theme-toggle:checked) .theme-switch-track::after {
  transform: translateX(1.05rem);
}

.theme-switch-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.hero {
  padding: 5.5rem 0 4.5rem;
  background:
    linear-gradient(180deg, transparent 0%, transparent 70%, var(--bg) 100%),
    radial-gradient(1200px 400px at 10% -10%, rgba(44, 154, 166, 0.18), transparent 55%),
    var(--bg);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.78rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  letter-spacing: -0.03em;
  line-height: 0.95;
  color: var(--heading);
}

.slogan {
  max-width: 38rem;
  margin: 1.4rem 0 0;
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  line-height: 1.35;
  color: var(--heading);
  font-weight: 560;
}

.lede {
  max-width: 38rem;
  margin: 1.2rem 0 0;
  color: var(--muted);
}

.hero-actions,
.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 2rem 0 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
}

.button.primary {
  background: var(--navy);
  color: #f7f4ee;
}

@media (prefers-color-scheme: dark) {
  .button.primary {
    background: var(--teal);
    color: var(--button-fg);
  }
}

body:has(#theme-toggle:checked) .button.primary {
  background: var(--teal);
  color: var(--button-fg);
}

@media (prefers-color-scheme: dark) {
  body:has(#theme-toggle:checked) .button.primary {
    background: var(--navy);
    color: #f7f4ee;
  }
}

.button.ghost {
  border-color: var(--line);
  color: var(--fg);
  background: transparent;
}

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

.section {
  padding: 4.5rem 0;
}

.section.alt {
  background: var(--paper-2);
  border-block: 1px solid var(--line);
}

.section h2,
.contact h2 {
  margin: 0;
  font-size: 1.8rem;
  color: var(--heading);
  letter-spacing: -0.02em;
}

.section-intro {
  max-width: 38rem;
  color: var(--muted);
}

.cards {
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.cards li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.35rem 1.5rem;
  box-shadow: var(--shadow);
}

.cards h3 {
  margin: 0 0 0.55rem;
  color: var(--heading);
  font-size: 1.12rem;
}

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

.stack {
  list-style: none;
  padding: 0;
  margin: 1.6rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.stack li {
  background: var(--chip-bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.contact-email {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--heading);
  text-decoration: none;
  border-bottom: 2px solid var(--teal);
}

.site-footer {
  padding: 2rem 0 2.6rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.footer-inner p {
  margin: 0.2rem 0;
}

@media (max-width: 760px) {
  .header-inner {
    flex-wrap: wrap;
    padding: 0.7rem 0;
  }

  .nav {
    margin-left: 0;
    width: 100%;
    order: 3;
  }

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

  .hero {
    padding-top: 3.2rem;
  }
}