:root {
  --bg: #0f1115;
  --surface: #151922;
  --surface-alt: #12161e;
  --text: #eceff8;
  --text-muted: #a9b0c3;
  --accent: #78a7ff;
  --border: #2a3140;
  --radius: 14px;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

body.light-theme {
  --bg: #f8f8f7;
  --surface: #ffffff;
  --surface-alt: #f1f1ee;
  --text: #111111;
  --text-muted: #5d5d5a;
  --accent: #0a55ff;
  --border: #dfdfd9;
  --shadow: 0 10px 26px rgba(20, 20, 20, 0.07);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "SF Pro Text", "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(980px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, white);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(6px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 68px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.nav {
  display: flex;
  gap: 1.1rem;
  font-size: 0.95rem;
  color: var(--text-muted);
}

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

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  width: 2.2rem;
  height: 2.2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

.theme-icon {
  width: 1.08rem;
  height: 1.08rem;
}

.icon-sun {
  display: none;
}

body.light-theme .icon-sun {
  display: block;
}

body.light-theme .icon-moon {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.hero {
  padding: 6.5rem 0 4rem;
}

.hero-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 2rem;
  align-items: center;
}

.hero-media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  object-fit: cover;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0.35rem 0 0.6rem;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.08;
  max-width: 12ch;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.hero-copy {
  max-width: 56ch;
  color: var(--text-muted);
  font-size: 1rem;
  margin: 0 0 0.65rem;
}

.rotating-roles {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
  min-height: 1.7rem;
}

.hero-meta {
  margin: 0 0 1rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.92rem;
}

.hero-meta svg {
  width: 0.9rem;
  height: 0.9rem;
  color: var(--accent);
}

#role-rotator {
  display: inline-block;
  transition: opacity 0.25s ease;
}

.hero-actions {
  margin-top: 1.8rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.66rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.93rem;
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0b1020;
}

body.light-theme .button.primary {
  color: #fff;
}

.button.ghost {
  background: var(--surface);
}

.section {
  padding: 3.5rem 0;
}

.section.alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

h2 {
  margin: 0 0 0.9rem;
  font-size: 1.7rem;
}

h3 {
  margin: 0 0 0.45rem;
  font-size: 1.14rem;
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.experience-card:hover,
.experience-card:focus-within {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  box-shadow: 0 14px 30px rgba(10, 85, 255, 0.12);
}

.timeline-date {
  margin: 0 0 0.15rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.experience-summary {
  margin: 0;
}

.inline-icon-link {
  display: inline-flex;
  vertical-align: middle;
  margin-left: 0.35rem;
  color: var(--accent);
}

.inline-icon-link svg {
  width: 0.95rem;
  height: 0.95rem;
}

.experience-extra {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(-4px);
  transition: max-height 0.35s ease, opacity 0.25s ease, transform 0.25s ease;
}

.experience-card:hover .experience-extra,
.experience-card:focus-within .experience-extra {
  max-height: 320px;
  opacity: 1;
  transform: translateY(0);
  margin-top: 0.6rem;
}

.experience-extra ul {
  margin: 0 0 0.75rem;
  padding-left: 1.2rem;
  color: var(--text-muted);
}

.experience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.experience-tags span {
  padding: 0.25rem 0.65rem;
  font-size: 0.8rem;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--border));
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 12%, var(--surface));
}

.site-footer {
  padding: 1.5rem 0 2.4rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

.footer-links a:hover {
  color: var(--text);
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.9rem;
  height: 1.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.social-link svg {
  width: 1rem;
  height: 1rem;
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .hero-media {
    max-width: 240px;
    margin: 0 auto;
  }

  .hero {
    padding-top: 5.5rem;
  }

  .experience-extra {
    max-height: 360px;
    opacity: 1;
    overflow: visible;
    transform: none;
    margin-top: 0.6rem;
  }
}