:root {
  --bg: #fcfcf9;
  --fg: #1a1a1a;
  --muted: #5c5c5c;
  --accent: #bc4f3d;
  --accent2: #3d5a80;
  --accent3: #81b29a;
  --accent-light: rgba(61, 90, 128, 0.06);
  --border: #e8e4df;
  --card-bg: #fff;
  --nav-bg: rgba(252, 252, 249, 0.85);
  --radius: 14px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --hero-grad-a: rgba(224, 122, 95, 0.08);
  --hero-grad-b: rgba(61, 90, 128, 0.08);
  --hero-grad-c: rgba(129, 178, 154, 0.06);
}

[data-theme="dark"] {
  --bg: #151718;
  --fg: #e3e4e5;
  --muted: #9ba1a6;
  --accent: #d6876f;
  --accent2: #81b29a;
  --accent3: #3d5a80;
  --accent-light: rgba(129, 178, 154, 0.08);
  --border: #2a2d2e;
  --card-bg: #1d1f20;
  --nav-bg: rgba(21, 23, 24, 0.85);
  --hero-grad-a: rgba(224, 122, 95, 0.04);
  --hero-grad-b: rgba(129, 178, 154, 0.04);
  --hero-grad-c: rgba(61, 90, 128, 0.04);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  position: relative;
  transition: background 0.3s, color 0.3s;
}

/* Decorative edge blobs */
.decor {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.decor::before {
  content: "";
  position: absolute;
  width: 20rem;
  height: 20rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 122, 95, 0.06) 0%, transparent 70%);
  top: -8rem;
  left: -8rem;
}

.decor::after {
  content: "";
  position: absolute;
  width: 24rem;
  height: 24rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(129, 178, 154, 0.06) 0%, transparent 70%);
  bottom: -10rem;
  right: -10rem;
}

/* Skip to content */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.5rem 1rem;
  background: var(--accent2);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 8px 8px;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
}

:focus-visible {
  outline: 2px solid var(--accent2);
  outline-offset: 2px;
}

a:focus-visible {
  border-radius: 4px;
}

/* Navigation */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 2rem;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  z-index: 100;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--fg);
  width: 28px;
  height: 28px;
  justify-content: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-current {
  color: var(--fg) !important;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.45rem;
  cursor: pointer;
  font-size: 1.05rem;
  line-height: 1;
  color: var(--muted);
  transition: color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  color: var(--fg);
  border-color: var(--fg);
}

/* Hero */
.hero {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse at 20% 40%, var(--hero-grad-a) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 40%, var(--hero-grad-b) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 90%, var(--hero-grad-c) 0%, transparent 50%);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  color: var(--fg);
  position: relative;
  z-index: 1;
}

.tagline {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  font-weight: 500;
  color: var(--muted);
  margin-top: 0.6rem;
  position: relative;
  z-index: 1;
}

.sub {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--muted);
  margin-top: 0.3rem;
  position: relative;
  z-index: 1;
}

.now {
  margin-top: 1rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent2);
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.now-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent3);
}

@media (prefers-reduced-motion: no-preference) {
  @keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
  }

  .now-dot {
    animation: pulse-dot 2s ease-in-out infinite;
  }
}

.hero-links {
  margin-top: 1.5rem;
  display: flex;
  gap: 1.25rem;
  position: relative;
  z-index: 1;
}

.hero-links a {
  color: var(--accent2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.4rem 1rem;
  border: 2px solid var(--accent2);
  border-radius: 999px;
  transition: background 0.2s, color 0.2s;
}

.hero-links a:hover {
  background: var(--accent2);
  color: var(--bg);
}

/* Sections */
section {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3rem 2rem;
}

h2 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

/* Bio (about section - not a card) */
.bio {
  position: relative;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: 3px solid var(--accent);
}

.bio p {
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--muted);
  line-height: 1.7;
}

/* Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: box-shadow 0.2s, transform 0.2s, background 0.3s, border-color 0.3s;
}

.card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transform: translateY(-2px);
}

.project-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  margin-top: 0.1rem;
  border-radius: 20%;
}

.card-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  margin-top: 0.1rem;
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  display: inline;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.card-header h3 {
  display: inline;
}

.card + .card {
  margin-top: -0.5rem;
}

.date {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 400;
}

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent2);
  vertical-align: middle;
  margin-left: 0.35rem;
}

.card .meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.15rem;
  margin-bottom: 0.4rem;
}

.card .meta a {
  color: var(--accent2);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.card .meta a:hover {
  border-color: var(--accent2);
}

.card-body p {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.65;
}

/* Skill grid */
.skill-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.skill-cat {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: box-shadow 0.2s, transform 0.2s, background 0.3s, border-color 0.3s;
}

.skill-cat:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transform: translateY(-2px);
}

.skill-cat h3 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent2);
  margin-bottom: 0.5rem;
}

.skill-cat ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-cat li {
  font-size: 0.85rem;
  color: var(--muted);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: var(--accent-light);
}

/* Footer */
footer {
  max-width: 40rem;
  margin: 2rem auto 0;
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--muted);
  transition: border-color 0.3s;
}

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

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

/* Scroll animations */
.animate {
  opacity: 0;
}

@media (prefers-reduced-motion: no-preference) {
  .animate {
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .animate.visible {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .animate {
    opacity: 1;
  }
}

/* Responsive */
@media (max-width: 600px) {
  nav {
    padding: 0.75rem 1.25rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.8rem;
  }

  section {
    padding: 2rem 1.25rem;
  }

  .bio {
    padding-left: 1rem;
  }

  .bio p {
    font-size: 1rem;
  }

  .card {
    padding: 1rem 1.25rem;
    gap: 0.75rem;
  }

  .card-icon {
    width: 36px;
    height: 36px;
  }

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

  footer {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}