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

:root {
  --bg-color: #f5f6f8;
  --surface-color: #ffffff;
  --text-color: #1f242e;
  --muted-text: #586174;
  --accent-color: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.12);
  --border-color: rgba(15, 23, 42, 0.08);
  --header-bg: rgba(245, 246, 248, 0.92);
  --shadow-color: rgba(15, 23, 42, 0.25);
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover,
a:focus {
  color: var(--accent-color);
}

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

h1, h2, h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.1rem, 4vw, 2.8rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin-top: 0;
  margin-bottom: 1.25rem;
  color: var(--muted-text);
}

ul {
  margin-top: 0;
  padding-left: 1.25rem;
}

.container {
  width: min(980px, calc(100% - 48px));
  margin: 0 auto;
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem 0;
}

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

.logo {
  font-weight: 600;
  letter-spacing: 0.04em;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.95rem;
}

.site-nav a {
  position: relative;
  padding-bottom: 2px;
}

.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background-color: var(--accent-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s ease;
}

.site-nav a:hover::after,
.site-nav a:focus::after {
  transform: scaleX(1);
}

.cta-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--accent-color);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: transparent;
  color: var(--muted-text);
  cursor: pointer;
  transition: transform 0.2s ease, color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus {
  transform: translateY(-1px);
  color: var(--accent-color);
  border-color: var(--accent-color);
  background-color: var(--accent-soft);
}

main {
  padding-bottom: 4rem;
}

.me {
  padding: 6rem 0 4rem;
  display: grid;
  gap: 3rem;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.me-copy {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-color);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: #059669;
  background-color: rgba(5, 150, 105, 0.1);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.status-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #10b981;
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.lead {
  font-size: 1.1rem;
}

.me-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 500;
  font-size: 0.95rem;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover,
.btn:focus {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px -20px var(--shadow-color);
}

.btn.primary {
  background-color: var(--accent-color);
  color: #ffffff;
}

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

.pic {
  display: flex;
  justify-content: center;
}

.portrait {
  border-radius: 24px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent-soft), rgba(37, 99, 235, 0));
  padding: 1rem;
  border: 1px solid var(--border-color);
  max-width: 320px;
  width: 60%;
  height: 60%;
}

.portrait img {
  border-radius: 18px;
}

.section {
  padding: 4rem 0 0;
}

.section-heading {
  max-width: 520px;
}

.section-lead {
  font-size: 1rem;
}

.project-grid {
  margin-top: 2.5rem;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: 0 14px 32px -26px var(--shadow-color);
}

.card h3 {
  margin-bottom: 0.75rem;
}

.card p {
  margin-bottom: 1.5rem;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding-left: 0;
  margin: 0 0 1.5rem;
}

.pill-list li {
  font-size: 0.8rem;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  background-color: var(--accent-soft);
  color: var(--accent-color);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}

.inline-link {
  font-weight: 500;
  color: var(--accent-color);
}

.inline-link:hover,
.inline-link:focus {
  text-decoration: underline;
}

.site-footer {
	padding: 3rem 0;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  color: var(--muted-text);
  font-size: 12px;
}

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

@media (max-width: 720px) {
  .site-header {
    position: static;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 0;
  }

  .site-nav {
    flex-wrap: wrap;
  }

  .cta-link {
    align-self: flex-end;
  }

  .me {
    padding-top: 4rem;
  }

  .project-grid {
    gap: 1.25rem;
  }
}

body[data-theme="dark"] {
  --bg-color: #0b1120;
  --surface-color: #111827;
  --text-color: #f3f4f6;
  --muted-text: #9ca6c4;
  --accent-color: #4c8ff7;
  --accent-soft: rgba(76, 143, 247, 0.2);
  --border-color: rgba(148, 163, 184, 0.24);
  --header-bg: rgba(11, 17, 32, 0.85);
  --shadow-color: rgba(2, 6, 23, 0.55);
}

body[data-theme="dark"] .portrait {
  background: linear-gradient(135deg, var(--accent-soft), rgba(12, 74, 185, 0.4));
}

body[data-theme="dark"] .theme-toggle {
  color: var(--muted-text);
}

body[data-theme="dark"] .status-badge {
  color: #34d399;
  background-color: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
}