/* ===== Light + Blue Modern Theme ===== */
:root{
  --text: #0f172a;         /* slate-900 */
  --muted: #475569;        /* slate-600 */
  --bg: #ffffff;           /* white */
  --soft: #f1f9ff;         /* very light blue background */
  --brand: #0ea5e9;        /* sky-500 */
  --brand-600: #0284c7;    /* sky-600 */
  --border: #e2e8f0;       /* slate-200 */
  --card: #ffffff;         /* white cards */
  --shadow: 0 10px 30px rgba(2,132,199,.12), 0 2px 6px rgba(15,23,42,.05);
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background: linear-gradient(180deg, var(--soft), #fff 35%, #fff 100%);
  color:var(--text);
  font:16px/1.6 system-ui, Segoe UI, Roboto, Arial, sans-serif;
}
.container{max-width:1120px;margin:auto;padding:0 18px}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(1.2) blur(8px);
  background:rgba(255,255,255,.7);
  border-bottom:1px solid var(--border);
}
.nav{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:900}
.logo{height:36px}
.logo-text{letter-spacing:.4px}
.menu-btn{
  display:none; background:none; border:1px solid var(--border); color:var(--text);
  border-radius:10px; padding:6px 10px
}
.main-nav{display:flex;gap:16px}
.main-nav a{
  color:var(--text); text-decoration:none; font-weight:600; opacity:.85;
  padding:8px 12px; border-radius:10px;
}
.main-nav a:hover{background:#ecfeff}

/* Hero */
.hero{position:relative; isolation:isolate}
.hero-bg{
  width:100%; height:56vh; object-fit:cover; display:block;
  filter:saturate(1.05) contrast(1.05);
}
.hero-gradient{
  position:absolute; inset:0; background:
    radial-gradient(60% 60% at 60% 30%, rgba(14,165,233,.25), transparent 60%),
    linear-gradient(180deg, rgba(255,255,255,.15), rgba(255,255,255,.9) 60%, #fff 100%);
  mix-blend:multiply;
}
.hero-inner{
  position:absolute; inset:0; display:grid; place-items:center; padding:24px;
}
.hero-card{
  width:min(780px, 92%); padding:24px 22px; border:1px solid var(--border);
  border-radius:20px; background:rgba(255,255,255,.8); backdrop-filter:blur(10px);
  box-shadow: var(--shadow);
  text-align:center;
}
.hero-card h1{margin:0 0 10px; font-size:clamp(28px, 5vw, 56px); line-height:1.1}
.hero-card p{margin:0; color:var(--muted)}
.cta-row{margin-top:16px; display:flex; gap:12px; justify-content:center; flex-wrap:wrap}
.btn{
  display:inline-block; padding:10px 16px; border-radius:999px; font-weight:800;
  text-decoration:none; border:1px solid var(--border);
}
.btn.primary{background:linear-gradient(135deg, var(--brand), var(--brand-600)); color:white; border:none}
.btn.ghost{background:#fff}

/* Sections & cards */
.section{padding:64px 0}
.section.alt{background:#f8fbff}
.section.light{background:#ffffff}
.image-bg{position:relative}
.section-bg{
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:.18;
}
.card{
  background:var(--card); border:1px solid var(--border); border-radius:18px; padding:18px;
  box-shadow: var(--shadow);
}
.glass{
  background:rgba(255,255,255,.7); backdrop-filter:blur(8px);
}
.muted{color:var(--muted)}
.two-col{display:grid; grid-template-columns: 1.1fr .9fr; gap:18px}
@media (max-width:920px){ .two-col{grid-template-columns:1fr} }

/* Stats */
.stats{display:grid; grid-template-columns:repeat(3,1fr); gap:14px; text-align:center}
.stats div{padding:16px; border:1px solid var(--border); border-radius:14px; background:#fff}
.stats strong{font-size:22px; display:block}
.stats span{color:var(--muted); font-size:12px; text-transform:uppercase; letter-spacing:1px}

/* Grids */
.grid-3{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
@media (max-width:1000px){ .grid-3{grid-template-columns:1fr 1fr} }
@media (max-width:640px){ .grid-3{grid-template-columns:1fr} }

.projects{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
@media (max-width:1000px){ .projects{grid-template-columns:1fr 1fr} }
@media (max-width:640px){ .projects{grid-template-columns:1fr} }
.proj{position:relative}
.tag{
  position:absolute; top:12px; right:12px; padding:6px 10px; border-radius:999px;
  background:#e0f2fe; color:#0c4a6e; font-weight:700; font-size:12px; border:1px solid var(--border);
}

/* Gallery */
.gallery{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}
@media (max-width:1000px){ .gallery{grid-template-columns:1fr 1fr} }
@media (max-width:640px){ .gallery{grid-template-columns:1fr} }
.gallery figure{margin:0}
.gallery img{width:100%; height:220px; object-fit:cover; border-radius:14px; display:block}
.gallery figcaption{padding:8px; color:var(--muted); font-size:14px}

/* Video */
.video-container{position:relative; padding-bottom:56.25%; height:0; overflow:hidden; border-radius:16px}
.video-container iframe{position:absolute; inset:0; width:100%; height:100%; border:0}

/* Footer */
.site-footer{border-top:1px solid var(--border); padding:22px 0; text-align:center; color:var(--muted); background:#f8fbff}

/* Mobile nav */
@media (max-width:860px){
  .main-nav{display:none}
  .menu-btn{display:inline-block}
}