:root{
  /* dark theme defaults */
  --bg: #0f1724;
  --card: #162035;
  --text: #e6eef8;
  --muted: #9aa7b8;
  --accent: #7c5cff;
  --accent-2: #00c6ff;
  --radius: 12px;

  /* layout tokens */
  --container-width: 1100px;
  --glass: rgba(255,255,255,0.03);
  --border: rgba(255,255,255,0.06);
}

[data-theme="light"]{
  --bg: #f7fafc;
  --card: #ffffff;
  --text: #0a1724;
  --muted: #556377;
  --accent: #7c5cff;
  --accent-2: #00a8ff;
  --glass: rgba(10,18,36,0.02);
  --border: rgba(10,18,36,0.06);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, "Segoe UI", Roboto, system-ui, -apple-system, "Helvetica Neue", Arial;
  color:var(--text);
  background: linear-gradient(180deg,var(--bg), #071021);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  transition: background .35s ease,color .35s ease;
}
.container{max-width:var(--container-width);margin:0 auto;padding:2rem}
.site-header{
  backdrop-filter: blur(6px);
  position: sticky; top: 0; z-index: 40;
  background: linear-gradient(180deg, rgba(5,8,15,0.55), rgba(5,8,15,0.25));
  border-bottom: 1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:0.75rem 1rem}
.brand{font-weight:700;color:var(--text);text-decoration:none;font-size:1.1rem}
.brand span{color:var(--accent)}
.nav-list{list-style:none;margin:0;padding:0;display:flex;gap:1.2rem;align-items:center}
.nav-list a{color:var(--muted);text-decoration:none;font-weight:600}
.nav-list a:hover{color:var(--text)}
.nav-toggle{display:none}
.controls{display:flex;gap:.6rem;align-items:center}

/* Buttons */
.btn{
  background: linear-gradient(90deg,var(--accent),var(--accent-2));
  color:#fff;padding:0.7rem 1.2rem;border-radius:10px;text-decoration:none;display:inline-block;border:none;
  box-shadow: 0 6px 18px rgba(0,0,0,0.18);
}
.btn-ghost{
  background:transparent;border:1px solid var(--border);color:var(--text);padding:0.6rem 1rem;border-radius:10px;
}
.theme-btn{background:var(--card);border:1px solid var(--border);padding:8px;border-radius:8px;cursor:pointer}

/* Hero */
.hero{padding:4rem 0}
.hero-grid{display:grid;grid-template-columns:1fr 360px;gap:2rem;align-items:center;min-height:60vh}
.hero-text h1{font-size:3rem;margin-bottom:0.6rem;line-height:1.02}
.lead{font-size:1.05rem;color:var(--muted);margin-bottom:1.25rem}

/* Profile frame (centered & zoom) */
.hero-image{display:flex;align-items:center;justify-content:center}
.profile-frame{
  width:320px;height:320px;border-radius:999px;overflow:hidden;display:flex;align-items:center;justify-content:center;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  transform: translateY(0);
  box-shadow: 0 14px 40px rgba(2,6,23,0.6);
}
/* the image zooms from 0.85 -> 1 (2s) */
.profile-frame img{width:100%;height:100%;object-fit:cover;display:block;transform:scale(0.85);opacity:0;transition:transform 2s cubic-bezier(.22,.9,.25,1),opacity .8s ease}

/* Section */
.section{padding:3rem 0}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}
.skills-grid{display:flex;gap:1rem;align-items:flex-end}
.skill{flex:1}
.skill h4{margin-bottom:.5rem}
.skill-bar{height:14px;background:rgba(255,255,255,0.03);border-radius:999px;overflow:hidden;position:relative}
.skill-bar > div{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width 900ms ease}

/* Projects grid */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem;margin-top:1rem}
.project-card{
  padding:1rem;border-radius:12px;background:var(--card);border:1px solid var(--border);
  display:flex;flex-direction:column;gap:8px;min-height:240px;transition:transform .22s ease,box-shadow .22s ease;
}
.project-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(0,0,0,0.4)}
.project-card .thumb{height:140px;background-size:cover;background-position:center;border-radius:8px}

/* Timeline & contact */
.timeline{list-style:none;padding:0;border-left:3px solid var(--accent);padding-left:1rem}
.timeline li{margin-bottom:1.2rem}
.contact-form{background:transparent;padding:0}
.form-row{margin-bottom:0.8rem}
input,textarea{width:100%;padding:0.7rem;border-radius:8px;border:1px solid var(--border);background:transparent;color:var(--text)}

/* Modal */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.6);opacity:0;pointer-events:none;transition:opacity 240ms}
.modal[aria-hidden="false"]{opacity:1;pointer-events:auto}
.modal-inner{background:var(--card);padding:1.5rem;border-radius:12px;max-width:720px;width:92%;border:1px solid var(--border)}

/* small utilities */
.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}
.muted{color:var(--muted);font-size:.95rem}

/* Reveal animations */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.in-view{opacity:1;transform:translateY(0)}

/* Hero reveal + stagger initial */
.hero-text.reveal, .hero-image.reveal { transition-delay: 0.15s }
.hero-text, .hero-image { opacity:0; transform:translateY(20px); }
.hero-text.in-view, .hero-image.in-view { opacity:1; transform:translateY(0) }

/* When JS runs, animate the profile image */
.profile-frame img.zoomed { transform: scale(1); opacity:1 }

/* responsive */
@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr;gap:1.2rem}
  .hero-text h1{font-size:2.2rem}
  .profile-frame{width:220px;height:220px}
  .nav-list{display:none}
  .nav-toggle{display:inline-block}
}