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

:root {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent2: #3fb950;
  --accent3: #f78166;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* NAV */
nav {
  position: fixed; top: 0; width: 100%; z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-size: 1.1rem; font-weight: 700; color: var(--text);
  letter-spacing: -0.3px;
}
.nav-logo span { color: var(--accent); }

.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a { color: var(--text-muted); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text); font-size: 1.4rem; }

/* HERO */
#hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 100px 2rem 4rem;
  max-width: 900px; margin: 0 auto;
}

.hero-content { max-width: 680px; }

.hero-tag {
  display: inline-block;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 1.5px;
  color: var(--accent); text-transform: uppercase;
  border: 1px solid rgba(88,166,255,0.3);
  padding: 4px 12px; border-radius: 20px;
  margin-bottom: 1.5rem;
  background: rgba(88,166,255,0.05);
}

.hero-name {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800; line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 0.5rem;
}

.hero-title {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--text-muted); font-weight: 400;
  margin-bottom: 1.5rem;
}
.hero-title strong { color: var(--accent); font-weight: 600; }

.hero-desc {
  color: var(--text-muted); font-size: 1.05rem;
  max-width: 540px; margin-bottom: 2.5rem; line-height: 1.75;
}

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

.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.65rem 1.4rem; border-radius: 6px;
  font-size: 0.9rem; font-weight: 600; cursor: pointer;
  transition: all 0.2s; border: none;
}
.btn-primary {
  background: var(--accent); color: #0d1117;
}
.btn-primary:hover { background: #79b8ff; text-decoration: none; }

.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

/* SECTIONS */
section { padding: 5rem 2rem; }
.section-inner { max-width: 900px; margin: 0 auto; }

.section-header { margin-bottom: 3rem; }
.section-label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--accent);
  margin-bottom: 0.5rem;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700; letter-spacing: -0.5px;
}
.section-line {
  width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin-top: 0.75rem; border-radius: 2px;
}

/* ABOUT */
#about { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }

.about-text p { color: var(--text-muted); line-height: 1.8; margin-bottom: 1rem; }
.about-text p:last-child { margin-bottom: 0; }

.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

.stat-card {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px; padding: 1.25rem;
}
.stat-num {
  font-size: 1.8rem; font-weight: 800; color: var(--accent);
  letter-spacing: -1px; line-height: 1;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.25rem; }

/* SKILLS */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }

.skill-group {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.5rem;
}
.skill-group-title {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--text-muted);
  margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem;
}
.skill-group-title span { font-size: 1rem; }

.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.skill-tag {
  font-size: 0.8rem; font-weight: 500;
  padding: 4px 10px; border-radius: 4px;
  background: var(--bg3); border: 1px solid var(--border);
  color: var(--text);
}

/* PROJECTS */
#projects { background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 1.5rem; }

.project-card {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; padding: 1.75rem;
  display: flex; flex-direction: column;
  transition: border-color 0.2s, transform 0.2s;
}
.project-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.project-top { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 1rem; }

.project-icon { font-size: 1.5rem; }

.project-links { display: flex; gap: 0.5rem; }
.project-link {
  width: 32px; height: 32px; border-radius: 6px;
  background: var(--bg3); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; color: var(--text-muted);
  transition: all 0.2s;
}
.project-link:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

.project-name {
  font-size: 1.05rem; font-weight: 700; margin-bottom: 0.5rem;
  color: var(--text);
}

.project-desc { color: var(--text-muted); font-size: 0.9rem; line-height: 1.6; flex: 1; margin-bottom: 1.25rem; }

.project-stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.stack-tag {
  font-size: 0.75rem; font-weight: 600;
  padding: 3px 8px; border-radius: 4px;
  background: rgba(88,166,255,0.1); color: var(--accent);
  border: 1px solid rgba(88,166,255,0.2);
}

/* CONTACT */
.contact-wrapper {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start;
}

.contact-text p { color: var(--text-muted); line-height: 1.8; margin-bottom: 1.5rem; }

.contact-links { display: flex; flex-direction: column; gap: 1rem; }
.contact-link {
  display: flex; align-items: center; gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text);
  transition: all 0.2s;
}
.contact-link:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.contact-link-icon { font-size: 1.2rem; width: 20px; text-align: center; }
.contact-link-text { font-size: 0.9rem; font-weight: 500; }
.contact-link-sub { font-size: 0.8rem; color: var(--text-muted); margin-top: 1px; }

.contact-form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); letter-spacing: 0.5px; }
.form-group input, .form-group textarea {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.65rem 0.9rem;
  color: var(--text); font-family: var(--font); font-size: 0.9rem;
  transition: border-color 0.2s; resize: vertical;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent);
}
.form-group textarea { min-height: 100px; }

/* FOOTER */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}
footer a { color: var(--text-muted); }
footer a:hover { color: var(--accent); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: var(--bg2); border-bottom: 1px solid var(--border); padding: 1rem 2rem; gap: 1rem; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }

  .about-grid, .contact-wrapper { grid-template-columns: 1fr; gap: 2rem; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  section { padding: 3.5rem 1.25rem; }
  #hero { padding: 90px 1.25rem 3rem; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { justify-content: center; }
}