:root{
  --bg:#0f1724;
  --card:#0b1220;
  --muted:#9aa4b2;
  --accent:#a03ed0;
  --glass: rgba(255,255,255,0.06);
  --radius:14px;
  --max-width:1100px;
  --gap:1.25rem;
  --text:#e6eef8;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg,#071025 0%, #0f1724 100%);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
}

/* Container */
.container{max-width:var(--max-width);margin:0 auto;padding:1.25rem}

/* Header */
.site-header{backdrop-filter: blur(6px);position:sticky;top:0;z-index:40;background:linear-gradient(180deg, rgba(255,255,255,0.02), transparent);border-bottom:1px solid rgba(255,255,255,0.03)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}
.brand h1{margin:0;font-size:1.25rem;letter-spacing:0.4px}
.brand p{margin:0;color:var(--muted);font-size:0.9rem}

/* Intro */
.intro{padding:1rem 0}
.intro .lead{color:var(--muted);max-width:70%}

/* Grid */
.portfolio-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:var(--gap);
  margin:1rem 0 3rem;
}

/* Card */
.card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow: 0 8px 30px rgba(2,6,23,0.6);
  transform:translateY(0);
  transition:transform .35s cubic-bezier(.2,.9,.2,1), box-shadow .35s;
  cursor:default;
  display:flex;
  flex-direction:column;
  min-height:320px;
}
.card:hover{transform:translateY(-8px);box-shadow:0 18px 50px rgba(2,6,23,0.7)}
.thumb{height:160px;background-size:cover;background-position:center;filter:contrast(1.02) saturate(1.05)}
.card-body{padding:1rem;display:flex;flex-direction:column;flex:1}
.card-body h3{margin:0 0 .5rem}
.card-body p{margin:0;color:var(--muted);font-size:0.95rem;flex:1}
.card-actions{display:flex;gap:.5rem;margin-top:1rem;align-items:center}

/* Buttons */
.btn{
  background:linear-gradient(90deg,var(--accent),#5b8bff);
  color:white;border:0;padding:.55rem .8rem;border-radius:8px;font-weight:600;cursor:pointer;text-decoration:none;
  box-shadow:0 6px 18px rgba(124,92,255,0.18);
}
.btn.outline{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--text);box-shadow:none}
.btn.small{padding:.35rem .6rem;font-size:.85rem;border-radius:8px}
.btn.icon{background:transparent;border:0;color:var(--muted);font-size:1.05rem;padding:.35rem}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,0.03);padding:1.25rem 0;color:var(--muted);text-align:center}

/* Modal */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:80}
.modal[aria-hidden="false"]{display:flex}
.modal-backdrop{position:absolute;inset:0;background:linear-gradient(180deg, rgba(2,6,23,0.6), rgba(2,6,23,0.85))}
.modal-panel{position:relative;width:90%;max-width:1100px;border-radius:12px;overflow:hidden;background:linear-gradient(180deg, rgba(10,14,22,0.9), rgba(6,10,16,0.95));box-shadow:0 30px 80px rgba(2,6,23,0.8);z-index:90}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:0.8rem 1rem;border-bottom:1px solid rgba(255,255,255,0.03)}
.modal-body{height:70vh}
.modal-body iframe{width:100%;height:100%;border:0;background:white}

/* Responsive tweaks */
@media (max-width:640px){
  .intro .lead{max-width:100%}
  .card{min-height:300px}
  .modal-body{height:60vh}
}

/* Light theme (toggle) */
:root.light{
  --bg:#f6f8fb;
  --card:#ffffff;
  --muted:#6b7280;
  --accent:#6c5ce7;
  --glass: rgba(0,0,0,0.04);
  --text:#0b1220;
}
body.light{
  background: linear-gradient(180deg,#f8fafc 0%, #eef2f7 100%);
  color:var(--text);
}