:root {
  --bg: #0a0e14;
  --bg-alt: #111722;
  --card: #151c29;
  --border: #232c3d;
  --text: #e6ebf4;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --accent-dim: #0e7490;
}

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

html { scroll-behavior: smooth; }

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

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.section { padding: 96px 0; }

/* NAV */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(10,14,20,.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, background .3s;
}
.nav.scrolled { border-bottom: 1px solid var(--border); background: rgba(10,14,20,.9); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700; color: var(--accent);
  text-decoration: none; font-size: 1.15rem;
}
.nav-links { display: flex; gap: 32px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: .92rem;
  transition: color .2s;
}
.nav-links a:hover { color: var(--accent); }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* HERO */
.hero { display: flex; align-items: center; min-height: 100vh; padding-top: 120px; }
.hero-inner { display: grid; grid-template-columns: 1.3fr .8fr; gap: 48px; align-items: center; }
.hero-overline { color: var(--accent); font-family: 'JetBrains Mono', monospace; font-size: .95rem; margin-bottom: 16px; }
.hero-name { font-size: clamp(2.2rem, 5vw, 3.4rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.02em; }
.hero-name .accent { color: var(--accent); }
.hero-title { font-size: clamp(1.2rem, 3vw, 1.6rem); font-weight: 600; color: var(--muted); margin-top: 12px; }
.hero-sub { color: var(--muted); margin-top: 16px; max-width: 480px; }

.hero-actions { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.hero-social { margin-top: 28px; font-family: 'JetBrains Mono', monospace; font-size: .85rem; color: var(--muted); }
.social-label::before { content: '◆ '; color: var(--accent); }

.hero-photo { display: flex; justify-content: center; }
.photo-frame {
  position: relative; width: 260px; height: 260px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 60px rgba(34,211,238,.15);
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }

/* SECTION TITLE */
.section-title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  margin-bottom: 40px;
}
.section-title .accent { color: var(--accent); font-family: 'JetBrains Mono', monospace; }

/* ABOUT */
.about-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.paragraph { color: var(--muted); white-space: pre-line; max-width: 760px; }

.skills { margin-top: 40px; }
.skills-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 16px; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  font-size: .82rem; padding: 6px 14px;
  border: 1px solid var(--border); border-radius: 999px;
  color: var(--text); background: var(--bg-alt);
  font-family: 'JetBrains Mono', monospace;
}

/* EXPERIENCE */
.exp-list { display: flex; flex-direction: column; gap: 24px; }
.exp-item {
  display: grid; grid-template-columns: 140px 1fr; gap: 24px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px;
}
.exp-year { font-family: 'JetBrains Mono', monospace; color: var(--accent); font-size: .9rem; padding-top: 4px; }
.exp-title { font-size: 1.1rem; font-weight: 600; }
.exp-role { color: var(--muted); font-size: .9rem; margin: 4px 0 12px; }
.exp-desc { color: var(--muted); margin-bottom: 14px; }

/* PROJECTS */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.project-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 16px; padding: 28px;
  transition: transform .25s, border-color .25s;
  display: flex; flex-direction: column;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--accent-dim); }
.project-status {
  align-self: flex-start; font-size: .72rem;
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid var(--accent-dim); color: var(--accent);
  font-family: 'JetBrains Mono', monospace; margin-bottom: 14px;
}
.project-title { font-size: 1.25rem; font-weight: 700; }
.project-sub { color: var(--accent); font-size: .9rem; margin-bottom: 12px; }
.project-desc { color: var(--muted); font-size: .9rem; margin-bottom: 16px; flex: 1; }
.project-card .skill-tags { margin-bottom: 16px; }
.project-link {
  color: var(--accent); text-decoration: none;
  font-family: 'JetBrains Mono', monospace; font-size: .9rem;
}
.project-link:hover { text-decoration: underline; }

/* EDUCATION */
.edu-card { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.edu-school { font-size: 1.2rem; font-weight: 700; }
.edu-major { color: var(--muted); margin: 6px 0; }
.edu-year { color: var(--accent); font-family: 'JetBrains Mono', monospace; font-size: .9rem; }

/* CONTACT */
.contact-lead { color: var(--muted); margin-bottom: 32px; max-width: 480px; }
.contact-links { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; }
.contact-loc { color: var(--muted); font-family: 'JetBrains Mono', monospace; font-size: .9rem; }

/* BUTTONS */
.btn {
  display: inline-block; padding: 12px 24px;
  border-radius: 10px; text-decoration: none;
  font-weight: 600; font-size: .95rem;
  transition: background .2s, transform .2s;
}
.btn-primary { background: var(--accent); color: #06222b; }
.btn-primary:hover { background: #67e8f9; transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* FOOTER */
.footer { border-top: 1px solid var(--border); padding: 32px 0; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: var(--muted); font-size: .85rem; }

/* MOBILE */
@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed; top: 0; right: 0; height: 100vh; width: 260px;
    background: var(--bg); border-left: 1px solid var(--border);
    flex-direction: column; justify-content: center; align-items: flex-start;
    padding-left: 32px; gap: 24px;
    transform: translateX(100%); transition: transform .3s ease; z-index: 60;
  }
  .nav-links a { font-size: 1.05rem; }
  .nav-links.open { transform: translateX(0); }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-actions, .hero-social { justify-content: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .photo-frame { width: 200px; height: 200px; }
  .exp-item { grid-template-columns: 1fr; gap: 8px; }
}