:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-border: #e2e8f0;

  --color-blue: #38bdf8;
  --color-blue-dark: #0284c7;
  --color-blue-tint: #e0f4ff;

  --color-orange: #f97316;
  --color-orange-dark: #c2410c;
  --color-orange-tint: #ffedd9;

  --font-heading: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Archivo", system-ui, sans-serif;

  --duration: 220ms;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --max-width: 1120px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0;
}

p { margin: 0; }

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  z-index: 1000;
  background: var(--color-text);
  color: #fff;
  padding: 8px 16px;
  border-radius: 8px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-blue-dark);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}
.logo .dot { color: var(--color-orange); }

.nav {
  display: flex;
  gap: 28px;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 8px 4px;
  position: relative;
  transition: color var(--duration) var(--ease);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--color-orange);
  transition: width var(--duration) var(--ease);
}

.nav a:hover {
  color: var(--color-text);
  cursor: pointer;
}
.nav a:hover::after { width: 100%; }

/* Hero */

.hero {
  position: relative;
  padding: 120px 0 96px;
  overflow: hidden;
}

.hero-blobs {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
  will-change: transform;
}

.blob-blue {
  width: 420px;
  height: 420px;
  background: var(--color-blue);
  top: -120px;
  right: -100px;
  animation: float-a 14s ease-in-out infinite;
}

.blob-orange {
  width: 320px;
  height: 320px;
  background: var(--color-orange);
  bottom: -80px;
  left: -80px;
  animation: float-b 16s ease-in-out infinite;
}

@keyframes float-a {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-30px, 30px) scale(1.08); }
}
@keyframes float-b {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(25px, -20px) scale(1.05); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.eyebrow {
  font-weight: 600;
  color: var(--color-orange-dark);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.75rem);
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #4169e1;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.hero-tags a {
  font-size: 0.85rem;
  font-weight: 500;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.hero-tags a:hover,
.hero-tags a:focus-visible {
  color: var(--color-orange-dark);
  border-color: var(--color-orange);
  transform: translateY(-2px);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), background var(--duration) var(--ease);
}

.btn-primary {
  background: var(--color-orange);
  color: #fff;
  box-shadow: 0 8px 20px -8px rgba(249, 115, 22, 0.55);
}
.btn-primary:hover {
  background: var(--color-orange-dark);
  transform: translateY(-2px);
}

.btn-ghost {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-blue);
  color: var(--color-blue-dark);
  transform: translateY(-2px);
}

/* Interests */

.interests {
  padding: 96px 0;
}

.interests h2,
.about h2 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.01em;
  color: #4169e1;
}

.section-lead {
  color: var(--color-text-muted);
  margin-top: 10px;
  margin-bottom: 48px;
  font-size: 1.05rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .card-grid { grid-template-columns: 1fr; }
}

.card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 28px;
  cursor: pointer;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.card:hover,
.card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px -16px rgba(15, 23, 42, 0.15);
  border-color: var(--color-blue);
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  margin-bottom: 20px;
}

.card-icon svg { width: 24px; height: 24px; }

.card-icon img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.icon-blue {
  background: var(--color-blue-tint);
  color: var(--color-blue-dark);
}
.icon-orange {
  background: var(--color-orange-tint);
  color: var(--color-orange-dark);
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.97rem;
}

/* Work in progress page */

.wip {
  padding: 140px 0 120px;
  text-align: center;
}

.wip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 18px;
  margin-bottom: 28px;
}

.wip-icon svg { width: 36px; height: 36px; }

.wip h1 {
  font-size: clamp(2rem, 5vw, 2.8rem);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.wip-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--color-orange-tint);
  color: var(--color-orange-dark);
  margin-bottom: 24px;
}

.wip p.wip-lead {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 480px;
  margin: 0 auto 40px;
}

.wip-image {
  width: 220px;
  height: 220px;
  border-radius: 24px;
  object-fit: cover;
  margin: 0 auto 40px;
  display: block;
}

/* About */

.about {
  padding: 96px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about-inner {
  max-width: 1040px;
  display: flex;
  align-items: center;
  gap: 48px;
}

.about-photo {
  flex: 0 0 220px;
  width: 220px;
  height: 220px;
  border-radius: 20px;
  object-fit: cover;
  border: 1px solid var(--color-border);
  box-shadow: 0 16px 32px -16px rgba(15, 23, 42, 0.15);
}

.about-text {
  flex: 1;
  min-width: 0;
}

.about p {
  margin-top: 20px;
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

@media (max-width: 720px) {
  .about-inner {
    flex-direction: column;
    text-align: center;
    gap: 28px;
  }
  .about-photo {
    flex: 0 0 auto;
    width: 160px;
    height: 160px;
  }
}

/* Footer */

.site-footer {
  padding: 96px 0 56px;
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  max-width: 640px;
  margin: 0 auto;
}

.footer-inner p:first-child {
  font-size: 1.2rem;
  font-family: var(--font-heading);
}

.footer-contact-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.social-links a svg {
  width: 20px;
  height: 20px;
}

.social-links a:hover {
  color: var(--color-orange-dark);
  border-color: var(--color-orange);
  transform: translateY(-2px);
}

.footer-meta {
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Scroll reveal */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms var(--ease), transform 600ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .blob { animation: none; }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn, .card, .nav a::after {
    transition: none;
  }
}

@media (max-width: 640px) {
  .nav { gap: 16px; }
  .hero { padding: 96px 0 72px; }
  .hero-actions { width: 100%; }
  .btn { flex: 1; }
}