:root{
  --bg: #0a0d12;
  --bg-alt: #0d1117;
  --surface: #11151c;
  --surface-2: #161b23;
  --border: #22282f;
  --text: #e7ebf0;
  --text-dim: #9aa4b2;
  --text-faint: #626c7a;
  --accent: #4fd1c5;
  --accent-2: #60a5fa;
  --accent-soft: rgba(79, 209, 197, 0.12);
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius: 14px;
  --container: 1120px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3{ font-family: var(--font-display); margin:0; }
p{ margin:0; }

.container{
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.bg-grid{
  position: fixed;
  inset:0;
  z-index:-1;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

/* Navbar */
.navbar{
  position: sticky;
  top:0;
  z-index: 50;
  background: rgba(10,13,18,0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.navbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height: 64px;
}
.logo{
  font-family: var(--font-display);
  font-weight:700;
  font-size: 1.15rem;
  letter-spacing: 0.5px;
}
.logo__dot{ color: var(--accent); }
.nav{
  display:flex;
  align-items:center;
  gap: 28px;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.nav a{ transition: color .2s ease; }
.nav a:hover{ color: var(--text); }
.nav__cta{
  color: var(--bg) !important;
  background: var(--accent);
  padding: 8px 16px;
  border-radius: 999px;
  font-weight:600;
}
.nav__cta:hover{ background: var(--accent); opacity:.9; color: var(--bg) !important; }
.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding: 6px;
}
.nav-toggle span{
  width:22px; height:2px; background: var(--text); border-radius:2px;
}

/* Hero */
.hero{
  padding: 100px 0 90px;
  position: relative;
  overflow:hidden;
}
.hero__inner{
  display:grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items:center;
}
.hero__eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  border: 1px solid rgba(79,209,197,0.3);
  background: var(--accent-soft);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.dot{ width:7px; height:7px; border-radius:50%; background: var(--accent); }
.dot--live{ box-shadow: 0 0 0 0 rgba(79,209,197,0.6); animation: pulse 2s infinite; }
@keyframes pulse{
  0%{ box-shadow: 0 0 0 0 rgba(79,209,197,0.5); }
  70%{ box-shadow: 0 0 0 8px rgba(79,209,197,0); }
  100%{ box-shadow: 0 0 0 0 rgba(79,209,197,0); }
}
.hero__title{
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight:700;
  line-height:1.05;
  margin-bottom: 12px;
}
.hero__role{
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--accent-2);
  font-weight:600;
  margin-bottom: 14px;
}
.hero__stack{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}
.hero__summary{
  color: var(--text-dim);
  font-size: 1.02rem;
  max-width: 560px;
  margin-bottom: 32px;
}
.hero__actions{
  display:flex;
  gap:14px;
  margin-bottom: 40px;
  flex-wrap:wrap;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight:600;
  font-size: 0.94rem;
  transition: transform .18s ease, opacity .18s ease, background .18s ease;
  border: 1px solid transparent;
}
.btn:hover{ transform: translateY(-2px); }
.btn--primary{
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #071018;
}
.btn--ghost{
  border-color: var(--border);
  color: var(--text);
  background: var(--surface);
}
.btn--ghost:hover{ border-color: var(--accent); }

.hero__meta{
  display:flex;
  flex-direction:column;
  gap: 12px;
}
.hero__meta-item{
  display:flex;
  align-items:center;
  gap:10px;
  font-size: 0.9rem;
  color: var(--text-dim);
  transition: color .2s ease;
}
.hero__meta-item:hover{ color: var(--accent); }
.hero__meta-item svg{ width:17px; height:17px; flex-shrink:0; }

.hero__console{ position: relative; }
.console{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.6);
}
.console__bar{
  display:flex;
  align-items:center;
  gap:7px;
  padding: 12px 16px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.console__bar span{
  width:11px; height:11px; border-radius:50%;
  background: #3a3f47;
}
.console__bar span:nth-child(1){ background:#ff5f57; }
.console__bar span:nth-child(2){ background:#febc2e; }
.console__bar span:nth-child(3){ background:#28c840; }
.console__bar p{
  margin:0 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}
.console__body{
  position: relative;
  min-height: 300px;
}
.console__frame{
  margin:0;
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-dim);
  overflow-x:auto;
  position: absolute;
  inset:0;
  opacity: 0;
  transition: opacity .5s ease;
  pointer-events:none;
}
.console__frame.is-active{ opacity: 1; }
.c-prompt{ color: var(--accent-2); }
.c-ok{ color: var(--accent); }

/* Sections */
.section{ padding: 90px 0; }
.section--alt{ background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section__label{
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 1px;
  margin-bottom: 10px;
}
.section__title{
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight:700;
  margin-bottom: 40px;
}

.about__grid{
  display:grid;
  gap: 20px;
  max-width: 780px;
}
.about__text{ color: var(--text-dim); font-size: 1.05rem; }

/* Timeline */
.timeline{
  display:flex;
  flex-direction:column;
  gap: 44px;
  position: relative;
  padding-left: 28px;
  border-left: 1px solid var(--border);
}
.timeline__item{ position: relative; }
.timeline__dot{
  position:absolute;
  left: -33px;
  top: 4px;
  width: 12px; height:12px;
  border-radius:50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}
.timeline__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap: 8px;
  margin-bottom: 4px;
}
.timeline__head h3{ font-size: 1.15rem; }
.timeline__date{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  white-space:nowrap;
}
.timeline__org{
  color: var(--accent-2);
  font-size: 0.92rem;
  margin-bottom: 14px;
}
.timeline__list{ display:flex; flex-direction:column; gap:9px; max-width: 720px; }
.timeline__list li{
  color: var(--text-dim);
  font-size: 0.96rem;
  padding-left: 18px;
  position: relative;
}
.timeline__list li::before{
  content:"";
  position:absolute;
  left:0; top: 9px;
  width:5px; height:5px;
  border-radius:50%;
  background: var(--text-faint);
}

/* Cards grid (education) */
.cards-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.card{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color .2s ease, transform .2s ease;
}
.card:hover{ border-color: rgba(79,209,197,0.35); transform: translateY(-3px); }
.card__date{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  margin-bottom: 10px;
}
.card__title{ font-size: 1.05rem; margin-bottom: 8px; }
.card__org{ color: var(--text-dim); font-size: 0.9rem; }
.card__badge{
  display:inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-2);
  background: rgba(96,165,250,0.1);
  border: 1px solid rgba(96,165,250,0.25);
  padding: 4px 10px;
  border-radius: 999px;
}

/* Skills */
.skills-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.skill-group h3{
  font-size: 0.98rem;
  color: var(--text);
  margin-bottom: 14px;
  font-family: var(--font-body);
  font-weight:600;
}
.tags{ display:flex; flex-wrap:wrap; gap:8px; }
.tag{
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 7px 12px;
  border-radius: 8px;
  transition: color .2s ease, border-color .2s ease;
}
.tag:hover{ color: var(--accent); border-color: rgba(79,209,197,0.35); }
.tag--sm{ font-size: 0.72rem; padding: 4px 8px; }

/* Project cards */
.project-card{ display:flex; flex-direction:column; }
.project-card__tags{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom: 14px; }
.card__desc{ color: var(--text-dim); font-size: 0.92rem; margin-top: 8px; }
.project-card__link{
  margin-top: auto;
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  transition: color .2s ease;
}
.project-card__link:hover{ color: var(--accent-2); }

/* Certifications */
.cert-list{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
}
.cert-item{
  background: var(--surface);
  padding: 18px 20px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.cert-item__name{ font-size: 0.95rem; font-weight:500; }
.cert-item__meta{
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
}

/* Contact */
.contact__intro{ color: var(--text-dim); max-width: 560px; margin-bottom: 36px; font-size: 1.02rem; }
.contact-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.contact-card{
  display:flex;
  align-items:center;
  gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color .2s ease, transform .2s ease;
}
.contact-card:hover{ border-color: rgba(79,209,197,0.35); transform: translateY(-3px); }
.contact-card--static:hover{ transform:none; border-color: var(--border); }
.contact-card svg{ width:22px; height:22px; color: var(--accent); flex-shrink:0; }
.contact-card > div{ min-width: 0; flex: 1; }
.contact-card__label{
  display:block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.contact-card__value{
  display:block;
  font-size: 0.95rem;
  word-break: break-word;
  overflow-wrap: anywhere;
}

/* Footer */
.footer{ padding: 32px 0; border-top: 1px solid var(--border); }
.footer__inner{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* Responsive */
@media (max-width: 900px){
  .hero__inner{ grid-template-columns: 1fr; }
  .hero__console{ order:-1; }
}

@media (max-width: 720px){
  .nav{
    position: absolute;
    top: 64px;
    left:0; right:0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    padding: 20px 24px;
    gap: 18px;
    display:none;
  }
  .nav.is-open{ display:flex; }
  .nav-toggle{ display:flex; }
  .nav__cta{ width:100%; text-align:center; }
  .hero{ padding: 60px 0 60px; }
  .section{ padding: 60px 0; }
}