/* Base Reset & Variables */
:root{
  --bg: #0d1117;
  --bg-soft: #111827;
  --card: #0b1220;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #60a5fa;
  --accent-2: #a78bfa;
  --border: #1f2937;
  --success: #34d399;
  --danger: #f87171;
  --shadow: rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  color:var(--text); background:radial-gradient(1200px 600px at 10% -10%, #1f2937 0%, transparent 60%),
                     radial-gradient(1200px 600px at 110% 10%, #1f2937 0%, transparent 60%),
                     var(--bg);
}
img{max-width:100%; display:block}
.container{width:min(1120px, 92%); margin-inline:auto}
.section{padding:80px 0}

/* Header */
.site-header{
  position:sticky; top:0; z-index:1000; backdrop-filter:saturate(180%) blur(10px);
  background-color:rgba(13,17,23,.7); border-bottom:1px solid var(--border);
}
.header-inner{display:flex; align-items:center; justify-content:space-between; padding:14px 0}
.brand{color:#fff; text-decoration:none; font-weight:700; letter-spacing:.5px}
.nav{position:relative}
.nav-list{display:flex; gap:20px; list-style:none; margin:0; padding:0}
.nav-list a{color:var(--muted); text-decoration:none; padding:8px 10px; border-radius:8px}
.nav-list a:hover{color:#fff; background-color:#111827}
.nav-toggle{display:none; background:none; border:0; padding:8px; cursor:pointer}
.nav-toggle .bar{display:block; width:22px; height:2px; background:#e5e7eb; margin:5px 0}

/* Layout helpers */
.grid-2{display:grid; grid-template-columns:1.1fr .9fr; gap:40px; align-items:center}
.grid{display:grid; gap:24px}
.cards{grid-template-columns:repeat(12, 1fr)}
.cards > .card {grid-column: span 6}
.cards > .card:nth-child(3n+1){grid-column: span 12}
@media (max-width: 900px){
  .grid-2{grid-template-columns:1fr}
  .cards{grid-template-columns:repeat(6, 1fr)}
  .cards > .card{grid-column: span 6}
  .nav-toggle{display:block}
  .nav-list{position:absolute; right:0; top:48px; flex-direction:column; background:#0b1220; padding:12px; border:1px solid var(--border); border-radius:12px; display:none;}
  .nav-list.open{display:flex}
}

/* Hero */
.hero h1{font-size: clamp(28px, 4vw, 48px); margin:0 0 12px}
.hero p{color:var(--muted); margin:0 0 24px}
.cta-wrap{display:flex; gap:12px; flex-wrap:wrap}
.btn{display:inline-flex; align-items:center; gap:8px; border-radius:10px; padding:10px 14px; cursor:pointer; text-decoration:none; border:1px solid var(--border); color:#fff}
.btn.primary{background: linear-gradient(135deg, var(--accent), var(--accent-2)); border:none}
.btn.ghost{background:transparent}
.btn:hover{filter:brightness(1.05)}
.meta{display:flex; gap:16px; padding:0; list-style:none; color:var(--muted)}

.hero-visual .card.preview{background:var(--card); border:1px solid var(--border); border-radius:16px; box-shadow:0 10px 30px var(--shadow); overflow:hidden}
.preview-header{display:flex; gap:8px; padding:12px; border-bottom:1px solid var(--border); background:#0f172a}
.dot{width:10px; height:10px; border-radius:50%; display:inline-block}
.dot.red{background:#ef4444}.dot.yellow{background:#f59e0b}.dot.green{background:#10b981}
.preview-body{position:relative; height:240px; background:repeating-linear-gradient( -45deg, #0b1220 0 10px, #0f172a 10px 20px )}
.shimmer{position:absolute; inset:0; background:linear-gradient(120deg, transparent, rgba(255,255,255,.04), transparent); transform:translateX(-100%); animation:shimmer 3s infinite}
.placeholder{position:absolute; inset:20px; border:1px dashed #374151; border-radius:12px}
@keyframes shimmer{50%{transform:translateX(0)} 100%{transform:translateX(100%)}}

/* Projects */
.section-head h2{margin:0 0 6px}
.section-head p{margin:0 0 24px; color:var(--muted)}
.project-filters{display:flex; gap:10px; flex-wrap:wrap; margin-bottom:18px}
.chip{padding:8px 12px; border-radius:999px; border:1px solid var(--border); background:#0b1220; color:#e5e7eb; cursor:pointer}
.chip.active{background:linear-gradient(135deg, #1f2937, #111827)}

.card{background:var(--card); border:1px solid var(--border); border-radius:16px; overflow:hidden; transition:transform .2s ease, border-color .2s}
.card:hover{transform:translateY(-3px); border-color:#2a3647}
.card-media{height:160px; background:#0f172a}
.skeleton{position:relative; overflow:hidden}
.skeleton::after{content:""; position:absolute; inset:0; transform:translateX(-100%); background:linear-gradient(120deg, transparent, rgba(255,255,255,.04), transparent); animation:shimmer 2.4s infinite}
.card-body{padding:16px}
.card-body h3{margin:0 0 8px; font-size:18px}
.card-body p{margin:0 0 12px; color:var(--muted)}
.tags{display:flex; gap:8px; flex-wrap:wrap}
.tags span{background:#0f172a; color:#cbd5e1; border:1px solid var(--border); font-size:12px; padding:4px 8px; border-radius:999px}

/* About */
.about .bullet{color:var(--muted)}
.bullet{list-style: none; padding-left:0}
.bullet li{position:relative; padding-left:24px; margin:10px 0}
.bullet li::before{content:""; position:absolute; left:0; top:10px; width:8px; height:8px; border-radius:50%; background:linear-gradient(135deg, var(--accent), var(--accent-2))}
.stat{display:grid; grid-template-columns:repeat(3, 1fr); gap:12px}
.stat > div{background:linear-gradient(180deg, #0f172a, #0b1220); border:1px solid var(--border); border-radius:14px; padding:16px; display:flex; flex-direction:column; gap:4px; align-items:flex-start}
.stat .num{font-size:28px; font-weight:700; background:linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip:text; background-clip:text; color:transparent}

/* Contact */
.form{background:linear-gradient(180deg, #0f172a, #0b1220); border:1px solid var(--border); border-radius:16px; padding:16px}
.form-grid{grid-template-columns:1fr 1fr}
.field{display:flex; flex-direction:column; gap:8px}
.field label{font-weight:600}
.field input, .field textarea{background:#0b1220; border:1px solid var(--border); border-radius:10px; padding:12px; color:#fff}
.field input:focus, .field textarea:focus{outline:2px solid #2a3647; border-color:#2a3647}
.error{color:var(--danger); min-height:18px}
.form-actions{display:flex; align-items:center; gap:14px; flex-wrap:wrap}

/* Footer */
.site-footer{border-top:1px solid var(--border); padding:22px 0; background:#0b1220}
.footer-inner{display:flex; align-items:center; justify-content:space-between; gap:16px}
.socials a{color:#9ca3af; margin-left:10px}
.socials a:hover{color:#fff}

/* Utilities */
.hidden{display:none !important}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}