/* Base & Theme */
:root{
  --bg: #0b1220;
  --bg-soft: #0d1526;
  --card: rgba(255,255,255,0.06);
  --glass: rgba(255,255,255,0.08);
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #7c3aed;
  --accent-2: #22d3ee;
  --border: rgba(255,255,255,0.12);
  --shadow: 0 10px 30px rgba(2,6,23,0.4);
  --radius: 18px;
}

:root.light{
  --bg: #f8fafc;
  --bg-soft: #eef2ff;
  --card: rgba(2,6,23,0.06);
  --glass: rgba(2,6,23,0.06);
  --text: #0f172a;
  --muted: #475569;
  --accent: #6d28d9;
  --accent-2: #0891b2;
  --border: rgba(2,6,23,0.12);
  --shadow: 0 10px 24px rgba(2,6,23,0.08);
}

*{
  box-sizing:border-box;
}

html:focus-within { 
  scroll-behavior: smooth; 
}

body{
  margin:0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 800px at 20% -10%, rgba(124,58,237,.25), transparent 60%),
              radial-gradient(1200px 800px at 110% 20%, rgba(34,211,238,.25), transparent 50%),
              var(--bg);
  color:var(--text);
  line-height:1.6;
  overflow-x:hidden;
}

@media (prefers-reduced-motion: reduce){
  *{
    animation:none!important; 
    transition:none!important; 
    scroll-behavior:auto!important;
  }
}

.container{ 
  width:min(1120px, 92%); 
  margin-inline:auto; 
}

.section{ 
  padding: clamp(56px, 8vw, 100px) 0; 
}

.section-head{ 
  margin-bottom: 28px;
}

.section-head h2{ 
  font-size: clamp(28px, 4vw, 40px); 
  margin:0 0 6px; 
  letter-spacing:-0.02em;
}

.kicker{ 
  color:var(--muted); 
  margin:0;
}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  background: linear-gradient(180deg, rgba(2,6,23,.55), rgba(2,6,23,.25), transparent);
  border-bottom:1px solid var(--border);
}

.nav-wrap{ 
  display:flex; 
  align-items:center; 
  justify-content:space-between; 
  padding:14px 0; 
}

.brand{ 
  display:flex; 
  align-items:center;
  gap:10px; 
  text-decoration:none; 
  color:var(--text); 
  font-weight:700; 
  letter-spacing:.3px;
}

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

.icon-accent{ 
  fill: var(--accent); 
  opacity:.28;
}

.icon-stroke{ 
  stroke:#fff; 
  stroke-width:2.5; 
  fill:none; 
  stroke-linecap:round; 
  stroke-linejoin:round; 
}

.primary-nav{ 
  display:flex; 
  align-items:center; 
  gap: 18px;
}

.primary-nav a{ 
  color:var(--text); 
  text-decoration:none; 
  opacity:.9; 
}

.primary-nav a:hover{ 
  opacity:1;
}

.theme-icon{ 
  width:22px; 
  height:22px; 
}

.theme-toggle, .nav-toggle{
  background:transparent; 
  border:1px solid var(--border); 
  color:var(--text);
  padding:10px 12px; 
  border-radius:12px; 
  cursor:pointer; 
  box-shadow: var(--shadow);
}

.nav-toggle{ 
  display:none;
}

.nav-toggle .bars{
  width:18px; 
  height:2px; 
  background:var(--text); 
  position:relative; 
}

.nav-toggle .bars::before, .nav-toggle .bars::after{
  content:""; 
  position:absolute; 
  left:0; 
  right:0; 
  height:2px;
  background:var(--text);
}

.nav-toggle .bars::before{
  top:-6px;
} 

.nav-toggle .bars::after{ 
  top:6px;
}

/* Buttons */
.btn{
  display:inline-flex; 
  align-items:center; 
  gap:10px; 
  text-decoration:none; 
  cursor:pointer;
  padding: 12px 16px; 
  border-radius: 14px; 
  border:1px solid var(--border);
  background: var(--glass); 
  color: var(--text); 
  box-shadow: var(--shadow); 
  transition: transform .15s ease;
  font-weight:600;
}

.btn:hover{ 
  transform: translateY(-1px);
}

.btn.primary{ 
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); 
  border-color: transparent; 
}

.btn.ghost{ 
  background: transparent;
}

.btn.small{ 
  padding:8px 12px; 
  border-radius: 12px; 
  font-size:.95rem; 
}

/* Hero */
.hero-grid{ 
  display:grid; 
  grid-template-columns: 1.1fr .9fr; 
  gap: clamp(18px, 4vw, 42px); 
  align-items:center;
}

.eyebrow{ 
  color: var(--muted); 
  margin:0 0 2px; 
  letter-spacing:.14em; 
  text-transform: uppercase; 
  font-size:.85rem;
}

.headline{ 
  font-size: clamp(36px, 8vw, 64px); 
  line-height:1.05; 
  margin:.1em 0 .2em; 
  letter-spacing:-.02em;
}

.subhead{ 
  margin:0 0 18px; 
  color:var(--muted); 
  font-size: clamp(1.02rem, 2vw, 1.2rem);
}

.hero-cta{ 
  display:flex; 
  gap:12px; 
  flex-wrap:wrap; 
  margin: 18px 0 12px;
}

.socials{ 
  display:flex; 
  gap:12px; 
  list-style:none;
  padding:0; 
  margin: 8px 0 0;
}

.socials a{ 
  display:grid; 
  place-items:center; 
  width:38px; 
  height:38px; 
  border-radius:12px; 
  border:1px solid var(--border); 
  background: var(--glass); 
  color:var(--text);
}

.profile-card{ 
  position:relative; 
  overflow:hidden; 
  border-radius:var(--radius); 
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); 
  border:1px solid var(--border); 
  box-shadow: var(--shadow);
}

.profile-img{ 
  display:block; 
  width:100%; 
  height:auto; 
  aspect-ratio: 1/1; 
  object-fit:cover;
}

.profile-card .badge{
  position:absolute; 
  bottom:14px; 
  left:14px; 
  padding:8px 12px; 
  border-radius:999px;
  background: rgba(16,185,129,.2); 
  color:#10b981; 
  font-weight:700; 
  font-size:.9rem; 
  border:1px solid rgba(16,185,129,.4);
}

.scroll-indicator{
  display:flex; 
  align-items:center; 
  gap:10px; color:var(--muted); 
  opacity:.85; 
  margin-top: 22px;
}

/* Cards & Layout */
.card{
  border:1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(16px, 3vw, 24px);
}

.card.glass{ 
  background: var(--glass);
}

.card.gradient{ 
  background: linear-gradient(135deg, rgba(124,58,237,.25), rgba(34,211,238,.2));
}

.about-grid{ 
  display:grid; 
  grid-template-columns: 1.2fr .8fr; 
  gap: clamp(16px, 3vw, 24px);
}

.highlights{ 
  margin:0; 
  padding-left: 20px;
}

.list{ 
  padding-left:18px;
}

/* Pills */
.skills-wrap{
  display:flex; 
  flex-wrap:wrap; 
  gap:10px;
}

.pill{
  border:1px solid var(--border); 
  background:var(--glass); 
  padding:10px 14px; 
  border-radius:999px;
  font-weight:600; 
  letter-spacing:.2px; 
  box-shadow: var(--shadow);
}

/* Projects */
.filters{ 
  display:flex; 
  gap:10px; 
  flex-wrap:wrap; 
  margin-bottom: 16px 
}

.filter-btn{
  padding:8px 12px; 
  border-radius: 10px; 
  border:1px solid var(--border); 
  background:var(--glass);
  color:var(--text); 
  cursor:pointer; 
  font-weight:600;
}

.filter-btn.active{ 
  outline:2px solid var(--accent); 
  outline-offset:2px;
}

.grid{ 
  display:grid; 
  grid-template-columns: repeat(12, 1fr); 
  gap: clamp(14px, 2.5vw, 20px);
}

.projects-grid > .project{
  grid-column: span 6; 
}

@media (max-width: 820px) { 
  .projects-grid > .project{
    grid-column: span 12;
  } 
}

.project img{ 
  width:100%; 
  height:auto; 
  border-radius: 14px; 
  border:1px solid var(--border);
}

.project-body{ 
  margin-top: 10px;
}

.project .tags{ 
  display:flex; 
  gap:8px; 
  flex-wrap:wrap; 
  margin: 8px 0;
}

.project .tags span{ 
  border:1px solid var(--border); 
  background:var(--glass); 
  padding:6px 10px; 
  border-radius: 999px; 
  font-size:.9rem;
}

/* Form */
.form .field{ 
  display:grid; 
  gap:6px; 
  margin-bottom:14px;
}

.form input, .form textarea{
  width:100%; 
  padding:12px 14px; 
  border-radius:12px; 
  border:1px solid var(--border); 
  background:var(--glass); 
  color:var(--text);
}

.form input:focus, .form textarea:focus{ 
  outline: 2px solid var(--accent); 
  outline-offset:1px;
}

.error{ 
  color:#ef4444; 
  font-size:.9rem; 
  min-height: 1.2em;
}

.form-actions{ 
  display:flex; 
  align-items:center; 
  gap:14px; 
  flex-wrap:wrap;
}

.form-note{ 
  margin:0; 
  color: var(--muted);
}

/* Footer */
.site-footer{ 
  border-top: 1px solid var(--border); 
  padding: 22px 0; 
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.05));
}

.footer-inner{
  display:flex; 
  align-items:center; 
  justify-content:space-between;
}

.to-top{ 
  color:var(--text); 
  text-decoration:none; 
  border:1px solid var(--border); 
  padding:8px 12px; 
  border-radius: 10px; 
  background: var(--glass);
}

/* Utilities */
.reveal{
  opacity:0; 
  transform: translateY(14px); 
  will-change: transform, opacity;
}

.reveal.in{ 
  opacity:1; 
  transform:none; 
  transition: opacity .6s ease, transform .6s ease;
}

.hidden{ 
  display:none!important;
}

/* Responsive */
@media (max-width: 960px){
  .hero-grid{ 
    grid-template-columns: 1fr; 
  }
  .about-grid{ 
    grid-template-columns: 1fr;
  }
  .primary-nav{ 
    position: fixed; 
    inset: 60px 14px auto; 
    top: 62px; 
    display: grid; 
    gap:10px;
    padding:14px; 
    background: var(--bg); 
    border:1px solid var(--border); 
    border-radius: 16px; 
    transform-origin: top right;
    box-shadow: var(--shadow);
  }
  .nav-toggle{ 
    display:block;
  }
}

.skip-link{
  position:absolute; 
  left:-999px; 
  top:auto; 
  width:1px; 
  height:1px; 
  overflow:hidden;
}

.skip-link:focus{ 
  position:static; 
  width:auto; 
  height:auto; 
  padding:8px; 
  background:#111; 
  color:#fff;
}

/* Utility classes */
.sr-only{ 
  position:absolute; 
  width:1px; height:1px; 
  padding:0; margin:-1px; 
  overflow:hidden; 
  clip:rect(0,0,0,0); 
  white-space:nowrap; 
  border:0;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  width: 50px; 
  height: 50px;
}