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

:root {
  --bg: #0a0a0a;
  --surface: #141414;
  --border: #222;
  --text: #e5e5e5;
  --muted: #737373;
  --accent: #f59e0b;
  --accent-hover: #fbbf24;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
}

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

/* NAV */
#nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 2rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background: rgba(10, 10, 10, 0.85);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 900px;
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  color: var(--muted);
  font-weight: 500;
  transition: color 0.2s;
}

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

/* CONTAINER */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* SECTIONS */
section {
  padding: 100px 0;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 3rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--accent);
}

/* HERO */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
}

.hero-text {
  flex: 1;
}

.hero-image {
  flex-shrink: 0;
}

.hero-image img {
  width: 280px;
  height: 280px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--border);
}

.greeting {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.accent {
  color: var(--accent);
}

.tagline {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 1.5rem;
  font-weight: 400;
}

.bio {
  max-width: 560px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.65rem 1.5rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  display: inline-block;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--muted);
  background: var(--surface);
}

/* SKILLS */
#skills {
  background: var(--surface);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.skill-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem 1.75rem;
}


.skill-card-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 500;
}

/* PROJECTS */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: border-color 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.project-card:hover {
  border-color: rgba(245, 158, 11, 0.5);
}

.project-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.project-card p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
  flex: 1;
}

.project-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.project-card .tag {
  font-size: 0.73rem;
  padding: 2px 8px;
  color: var(--muted);
  border-color: var(--border);
  background: var(--bg);
}

.accent-link {
  color: var(--accent);
}

.accent-link:hover {
  text-decoration: underline;
}

/* CONTACT */
#contact {
  background: var(--surface);
}

.contact-container {
  text-align: center;
}

.contact-sub {
  color: var(--muted);
  font-size: 1rem;
  margin-bottom: 3rem;
  margin-top: -2rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg);
  transition: all 0.2s;
}

.contact-link:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* FOOTER */
footer {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--border);
}

/* RESPONSIVE */
@media (max-width: 640px) {
  section {
    padding: 80px 0;
  }

  .hero-inner {
    flex-direction: column-reverse;
    gap: 2rem;
    text-align: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-image img {
    width: 200px;
    height: 200px;
  }

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

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

  .nav-links {
    gap: 1.25rem;
  }
}