/* ===== Base ===== */
:root {
  --bg: #0a0e14;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --border: #1e2a3a;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #00d9ff;
  --accent2: #7c5cff;
  --accent-glow: rgba(0, 217, 255, 0.15);
  --radius: 16px;
  --max: 1100px;
}

* { 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: 1.7;
  overflow-x: hidden;
}

/* ===== Background ===== */
.bg-grid {
  position: fixed; inset: 0; z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.02) 1px, transparent 1px);
  background-size: 50px 50px;
}
.bg-glow {
  position: fixed; top: -20%; left: 50%; transform: translateX(-50%);
  width: 800px; height: 600px; z-index: -1;
  background: radial-gradient(ellipse at center, var(--accent-glow), transparent 70%);
  filter: blur(80px); pointer-events: none;
}

/* ===== Nav ===== */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(10,14,20,.7); backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, padding .3s;
}
#nav.scrolled { border-bottom-color: var(--border); padding: .6rem 2rem; }
.nav-logo { font-size: 1.5rem; font-weight: 800; color: var(--text); text-decoration: none; letter-spacing: -.02em; }
.nav-logo span { color: var(--accent); }
#nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
#nav-links a { color: var(--text-dim); text-decoration: none; font-size: .9rem; font-weight: 500; transition: color .2s; }
#nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: .5rem 1.2rem; border: 1px solid var(--accent); border-radius: 8px;
  color: var(--accent) !important; transition: background .2s, box-shadow .2s;
}
.nav-cta:hover { background: var(--accent-glow); box-shadow: 0 0 20px var(--accent-glow); }
#menu-toggle { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* ===== Hero ===== */
#hero {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center;
  justify-content: center; text-align: center; padding: 6rem 2rem 3rem; position: relative;
}
.hero-greeting { color: var(--accent); font-size: 1.1rem; font-weight: 500; margin-bottom: .5rem; letter-spacing: .05em; }
.hero-name { font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 900; letter-spacing: -.03em; line-height: 1; }
.hero-role { font-size: clamp(1.3rem, 4vw, 2rem); font-weight: 600; color: var(--text-dim); margin-top: .5rem; }
.hero-tagline { max-width: 600px; margin: 1.5rem auto 0; color: var(--text-dim); font-size: 1.05rem; }
.hl { color: var(--accent); font-weight: 600; }
.hero-actions { display: flex; gap: 1rem; justify-content: center; margin-top: 2rem; flex-wrap: wrap; }
.btn-primary, .btn-ghost {
  padding: .8rem 2rem; border-radius: 10px; text-decoration: none; font-weight: 600; font-size: .95rem; transition: all .25s;
}
.btn-primary { background: var(--accent); color: #001520; box-shadow: 0 0 30px var(--accent-glow); }
.btn-primary:hover { box-shadow: 0 0 50px var(--accent-glow); transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats { display: flex; gap: 3rem; margin-top: 3rem; flex-wrap: wrap; justify-content: center; }
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: .8rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .08em; }
.scroll-indicator { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); width: 26px; height: 42px; border: 2px solid var(--text-dim); border-radius: 14px; display: flex; justify-content: center; padding-top: 6px; }
.scroll-indicator span { width: 4px; height: 8px; background: var(--accent); border-radius: 2px; animation: scroll-bounce 1.5s infinite; }
@keyframes scroll-bounce { 0%,100%{opacity:1;transform:translateY(0)} 50%{opacity:.3;transform:translateY(12px)} }

/* ===== Sections ===== */
section { max-width: var(--max); margin: 0 auto; padding: 6rem 2rem; }
.section-title { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; margin-bottom: 3rem; letter-spacing: -.02em; }
.section-title span { color: var(--accent); }

/* ===== About ===== */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 3rem; align-items: start; }
.about-text p { margin-bottom: 1.2rem; color: var(--text-dim); }
.about-text strong { color: var(--text); }
.about-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; }
.about-card h3 { font-size: 1.1rem; margin-bottom: 1.2rem; color: var(--accent); }
.facts { list-style: none; display: flex; flex-direction: column; gap: .8rem; }
.facts li { display: flex; align-items: center; gap: .7rem; font-size: .95rem; color: var(--text-dim); }
.fact-icon { font-size: 1.2rem; }

/* ===== Skills ===== */
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.skill-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.8rem; transition: border-color .25s, transform .25s; }
.skill-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.skill-card h3 { font-size: 1.05rem; margin-bottom: 1rem; }
.skill-tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.skill-tags span { background: rgba(0,217,255,.08); border: 1px solid rgba(0,217,255,.2); color: var(--accent); padding: .3rem .8rem; border-radius: 6px; font-size: .8rem; font-weight: 500; font-family: 'JetBrains Mono', monospace; }

/* ===== Timeline ===== */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--border); }
.timeline-item { position: relative; padding-bottom: 2.5rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: -2rem; top: .3rem; width: 14px; height: 14px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); margin-left: -6px; }
.timeline-content { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; transition: border-color .25s; }
.timeline-content:hover { border-color: var(--accent); }
.timeline-period { display: inline-block; font-size: .75rem; font-weight: 600; color: var(--accent); background: rgba(0,217,255,.1); padding: .2rem .7rem; border-radius: 20px; margin-bottom: .6rem; font-family: 'JetBrains Mono', monospace; }
.timeline-content h3 { font-size: 1.15rem; margin-bottom: .5rem; }
.timeline-content p { color: var(--text-dim); font-size: .95rem; }

/* ===== Projects ===== */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.5rem; }
.project-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem; transition: border-color .25s, transform .25s, background .25s; }
.project-card:hover { border-color: var(--accent); transform: translateY(-4px); background: var(--bg-card-hover); }
.project-icon { font-size: 2.5rem; margin-bottom: 1rem; }
.project-card h3 { font-size: 1.15rem; margin-bottom: .6rem; }
.project-card p { color: var(--text-dim); font-size: .92rem; margin-bottom: 1rem; }
.project-stack { font-size: .78rem; color: var(--accent); font-family: 'JetBrains Mono', monospace; font-weight: 500; }

/* ===== Contact ===== */
#contact { text-align: center; }
.contact-intro { color: var(--text-dim); max-width: 500px; margin: 0 auto 2.5rem; }
.contact-links { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; }
.contact-card { display: flex; flex-direction: column; align-items: center; gap: .4rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem 2.5rem; text-decoration: none; color: var(--text); transition: border-color .25s, transform .25s; min-width: 200px; }
.contact-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.contact-icon { font-size: 2rem; width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: rgba(0,217,255,.1); border-radius: 50%; color: var(--accent); font-weight: 700; }
.contact-label { font-weight: 600; font-size: .95rem; }
.contact-value { font-size: .85rem; color: var(--text-dim); }

/* ===== Footer ===== */
footer { text-align: center; padding: 2rem; border-top: 1px solid var(--border); color: var(--text-dim); font-size: .85rem; }

/* ===== Reveal Animation ===== */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .6s ease, transform .6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  #menu-toggle { display: block; }
  #nav-links { position: fixed; top: 56px; right: 0; flex-direction: column; background: var(--bg-card); border: 1px solid var(--border); border-radius: 0 0 0 16px; padding: 1.5rem; gap: 1rem; transform: translateX(120%); transition: transform .3s; }
  #nav-links.open { transform: translateX(0); }
  .about-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; }
  section { padding: 4rem 1.2rem; }
}