:root{
  --bg: #0b1020;
  --bg-elev: #11162b;
  --text: #e6e9f2;
  --muted: #a6b0c3;
  --primary: #0ea5e9;
  --primary-600: #0284c7;
  --accent: #22d3ee;
  --card: #0f1426;
  --ring: #1f2b4a;
  --shadow: 0 10px 30px rgba(2,132,199,.25);
}

/* Explicit theme overrides: manual choice always wins */
[data-theme="dark"]{
  --bg: #0b1020;
  --bg-elev: #11162b;
  --text: #e6e9f2;
  --muted: #a6b0c3;
  --card: #0f1426;
  --ring: #1f2b4a;
}

[data-theme="light"]{
  --bg:#f7fafc;
  --bg-elev:#ffffff;
  --text:#0b1020;
  --muted:#5b6475;
  --card:#ffffff;
  --ring:#d9e2ef;
}

/* System preference fallback when no manual theme set */
@media (prefers-color-scheme: light){
  :root:not([data-theme]){ --bg:#f7fafc; --bg-elev:#ffffff; --text:#0b1020; --muted:#5b6475; --card:#ffffff; --ring:#d9e2ef; }
}

*{ box-sizing: border-box }
html,body{ margin:0; padding:0 }
html{ scroll-behavior: smooth }
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container{ width:min(1100px, 92%); margin-inline:auto }

.site-header{
  position: sticky; top:0; z-index:50; backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 70%, transparent);
  border-bottom: 1px solid var(--ring);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; padding:14px 0 }
.logo{ font-weight:800; letter-spacing:.5px; color:var(--text); text-decoration:none; font-size:20px }
.nav-toggle{ display:none; background:none; border:none; color:var(--text); font-size:22px }
.menu{ list-style:none; display:flex; gap:22px; margin:0; padding:0 }
.menu a{ color:var(--muted); text-decoration:none; font-weight:500 }
.menu a:hover{ color:var(--text) }
.theme-toggle{ background: var(--card); color: var(--text); border:1px solid var(--ring); padding:8px 10px; border-radius:10px }

.section{ padding:64px 0 }
.hero{ padding:96px 0 64px }
.hero-inner{ display:grid; grid-template-columns: 1.2fr .8fr; gap:32px; align-items:center }
.eyebrow{ text-transform:uppercase; letter-spacing:.12em; color:var(--accent); font-weight:700; font-size:12px; margin:0 0 8px }
.hero h1{ font-size:48px; line-height:1.1; margin:0 0 16px }
.lead{ color:var(--muted); font-size:18px; max-width:60ch }
.cta{ display:flex; gap:12px; margin-top:20px }
.gradient-orb{ width:320px; aspect-ratio:1; border-radius:50%; background: radial-gradient(closest-side, color-mix(in oklab, var(--primary) 70%, white), transparent 70%), conic-gradient(from 0deg, var(--accent), var(--primary)); filter: blur(12px); box-shadow: var(--shadow); justify-self:center }

.grid.two{ display:grid; grid-template-columns: 1fr 1fr; gap:28px }
.grid.three{ display:grid; grid-template-columns: repeat(3, 1fr); gap:22px }

h2{ font-size:28px; margin:0 0 12px }
p{ margin:0 0 12px }

.about-card{ background:var(--card); border:1px solid var(--ring); padding:20px; border-radius:14px }
.facts{ list-style:none; margin:0; padding:0; display:grid; gap:10px }
.facts li{ display:flex; justify-content:space-between; gap:10px; color:var(--muted) }
.facts strong{ color:var(--text) }

.chip-list{ display:flex; flex-wrap:wrap; gap:10px; margin:10px 0 0; padding:0; list-style:none }
.chip{ background:var(--card); color:var(--text); border:1px solid var(--ring); padding:8px 12px; border-radius:999px; font-size:14px }

.section-head{ display:flex; align-items:center; justify-content:space-between; gap:16px; margin-bottom:18px }
.filters{ display:flex; gap:8px; flex-wrap:wrap }
.filter{ background:var(--card); color:var(--muted); border:1px solid var(--ring); padding:8px 12px; border-radius:10px; cursor:pointer }
.filter.is-active, .filter:hover{ color:var(--text); border-color: var(--primary) }

.card{ background:var(--card); border:1px solid var(--ring); border-radius:14px; padding:18px }
.project-card{ display:flex; flex-direction:column; gap:12px }
.project-card img{ width:100%; height:180px; object-fit:cover; border-radius:10px; border:1px solid var(--ring) }
.project-card h3{ margin:0 }
.project-card p{ color:var(--muted); margin:0 }
.project-tags{ display:flex; gap:8px; flex-wrap:wrap }

.button{ display:inline-flex; align-items:center; gap:8px; padding:10px 14px; border-radius:12px; border:1px solid var(--ring); background:var(--bg-elev); color:var(--text); text-decoration:none; cursor:pointer }
.button.primary{ background: linear-gradient(135deg, var(--primary), var(--accent)); color:#081018; border-color: transparent; font-weight:700 }
.button.ghost{ background:transparent }

.contact-content{ text-align:center; max-width:800px; margin:0 auto }
.contact-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap:20px; margin-top:30px }
.contact-card{ background:var(--card); border:1px solid var(--ring); padding:24px; border-radius:14px; text-align:left }
.contact-card h3{ margin:0 0 8px; font-size:18px }
.contact-card p{ margin:0 0 12px; color:var(--muted); font-size:14px }
.contact-link{ color:var(--primary); text-decoration:none; font-weight:500 }
.contact-link:hover{ text-decoration:underline }
.contact-info{ color:var(--text); font-weight:500 }

.site-footer{ border-top:1px solid var(--ring); padding:18px 0; color:var(--muted) }
.footer-inner{ display:flex; align-items:center; justify-content:center }

/* Modal */
.modal{ position:fixed; inset:0; display:none }
.modal[aria-hidden="false"]{ display:block }
.modal-backdrop{ position:absolute; inset:0; background: rgba(0,0,0,.5); backdrop-filter: blur(2px) }
.modal-dialog{ position:relative; width:min(900px, 92%); margin:50vh auto; transform:translateY(-50%); background:var(--card); border:1px solid var(--ring); border-radius:16px; overflow:hidden; box-shadow: var(--shadow) }
.modal-close{ position:absolute; top:10px; right:10px; background:var(--bg-elev); color:var(--text); border:1px solid var(--ring); border-radius:10px; padding:6px 8px; cursor:pointer }
.modal-content{ display:grid; grid-template-columns: 1fr 1fr }
.modal-content img{ width:100%; height:100%; object-fit:cover; border-right:1px solid var(--ring) }
.modal-body{ padding:18px }
.modal-actions{ display:flex; gap:10px; margin-top:14px }

/* Forms */
label{ display:grid; gap:6px; margin-bottom:10px }
input, textarea{ background: var(--bg-elev); color: var(--text); border:1px solid var(--ring); padding:10px 12px; border-radius:10px }
.form-status{ margin-top:8px; color:var(--muted) }

/* Responsive */
@media (max-width: 900px){
  .hero-inner{ grid-template-columns:1fr }
  .grid.two{ grid-template-columns:1fr }
  .grid.three{ grid-template-columns:1fr 1fr }
  .modal-content{ grid-template-columns:1fr }
}
@media (max-width: 640px){
  .menu{ display:none; position:absolute; right:12px; top:54px; flex-direction:column; background:var(--card); border:1px solid var(--ring); padding:10px; border-radius:12px }
  .menu.open{ display:flex }
  .nav-toggle{ display:inline-block }
  .grid.three{ grid-template-columns:1fr }
  .hero h1{ font-size:36px }
}