/* ========== Design Tokens ========== */
:root{
  --bg: #0b1220;
  --panel: #0f172a;
  --panel-2:#111827;
  --text: #e5e7eb;
  --muted:#9ca3af;
  --brand:#60a5fa;
  --brand-2:#22d3ee;
  --accent:#a78bfa;
  --ok:#34d399;
  --warn:#fbbf24;
  --grid: rgba(148,163,184,.08);
  --radius:14px;
  --shadow: 0 10px 30px rgba(2,6,23,.45);
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#f8fafc;
    --panel:#ffffff;
    --panel-2:#f1f5f9;
    --text:#0f172a;
    --muted:#475569;
    --grid: rgba(2,6,23,.06);
    --shadow: 0 8px 24px rgba(15,23,42,.08);
  }
}

/* ========== Base ========== */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 120% -10%, rgba(96,165,250,.18), transparent 60%),
    radial-gradient(900px 500px at -20% 0%, rgba(34,211,238,.15), transparent 60%),
    var(--bg);
  line-height:1.65;
}

/* subtle tech grid */
body::before{
  content:"";
  position:fixed; inset:0;
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(80% 60% at 50% 0%, #000 40%, transparent 100%);
  pointer-events:none;
  z-index:0;
}

/* ========== Header / Nav ========== */
header.site-header{
  position:fixed; top:0; left:0; width:100%;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--panel), transparent 25%);
  border-bottom:1px solid rgba(148,163,184,.15);
  z-index:1000;
}
.header-inner{
  max-width:1120px; margin:auto;
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 20px;
}
.brand{
  display:flex; gap:10px; align-items:center; text-decoration:none; color:var(--text);
  font-weight:700; letter-spacing:.2px;
}
.brand .chip{
  width:28px; height:28px; border-radius:8px;
  background: conic-gradient(from 180deg at 50% 50%, var(--brand), var(--brand-2), var(--accent), var(--brand));
  box-shadow:0 0 0 2px rgba(148,163,184,.15);
}
nav a{
  color:var(--text); text-decoration:none; margin:0 10px; padding:6px 10px; border-radius:8px;
}
nav a:hover{ background:rgba(148,163,184,.12) }
nav a.active{
  border:1px solid rgba(148,163,184,.28);
  background:linear-gradient(180deg, rgba(96,165,250,.15), rgba(34,211,238,.10));
}

/* mobile nav */
.nav-toggle{ display:none; background:none; border:none; color:var(--text); font-size:22px; }
@media (max-width:820px){
  .nav-links{ display:none; }
  .nav-links.open{ display:flex; position:absolute; right:12px; top:58px; flex-direction:column; background:var(--panel); border:1px solid rgba(148,163,184,.2); border-radius:12px; padding:6px; box-shadow:var(--shadow); }
  .nav-links.open a{ margin:4px; }
  .nav-toggle{ display:block; }
}

/* ========== Layout ========== */
main{ position:relative; z-index:1; }
.container{ max-width:1120px; margin:0 auto; padding: 100px 20px 40px; }
.section{ margin:40px 0; }
.panel{
  background:var(--panel);
  border:1px solid rgba(148,163,184,.18);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* ========== Hero ========== */
.hero{
  display:grid; grid-template-columns: 1.2fr .8fr; gap:24px; align-items:center;
}
@media (max-width:980px){ .hero{ grid-template-columns:1fr; } }
.hero .welcome{ padding:32px; }
.kicker{
  display:inline-flex; align-items:center; gap:10px;
  font-size:.9rem; color:var(--muted); letter-spacing:.3px;
}
.kicker .dot{ width:8px; height:8px; border-radius:999px; background:linear-gradient(90deg,var(--brand),var(--brand-2)); box-shadow:0 0 12px var(--brand-2);}
.hero h1{ font-size: clamp(28px, 4vw, 44px); margin:10px 0 8px; line-height:1.15;}
.hero p{ color:var(--muted); margin:0 0 18px; }
.cta-row{ display:flex; gap:12px; flex-wrap:wrap; }
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 16px; border-radius:12px; border:1px solid rgba(148,163,184,.25);
  text-decoration:none; color:var(--text); font-weight:600;
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
}
.btn.primary{ background: linear-gradient(180deg, color-mix(in oklab, var(--brand) 55%, transparent), color-mix(in oklab, var(--brand-2) 40%, transparent)); border-color: transparent; }
.btn:hover{ transform: translateY(-1px); }

/* hero visual */
.hero .visual{
  padding:24px; position:relative; overflow:hidden;
}
.hardware{
  position:relative; border-radius:14px; overflow:hidden; background:var(--panel-2); border:1px solid rgba(148,163,184,.18);
}
.hardware::before{
  content:""; position:absolute; inset:0;
  background:
    radial-gradient(500px 180px at 20% -10%, rgba(96,165,250,.25), transparent 60%),
    radial-gradient(400px 200px at 80% 110%, rgba(167,139,250,.2), transparent 60%);
}
.hardware svg{ display:block; width:100%; height:auto; }

/* ========== Grids / Cards ========== */
.grid{ display:grid; gap:16px; }
.grid.cols-3{ grid-template-columns: repeat(3,1fr);}
.grid.cols-2{ grid-template-columns: repeat(2,1fr);}
@media (max-width:980px){ .grid.cols-3{ grid-template-columns:1fr; } .grid.cols-2{ grid-template-columns:1fr; } }

.card{ padding:22px; border-radius:14px; background:var(--panel); border:1px solid rgba(148,163,184,.18); }
.card h3{ margin:0 0 6px; font-size:1.1rem; }
.card p{ margin:0; color:var(--muted); }

/* ========== Logos strip ========== */
.logos{
  display:flex; gap:28px; flex-wrap:wrap; align-items:center; opacity:.85;
  border-radius:14px; padding:18px 22px; border:1px dashed rgba(148,163,184,.25);
  background: color-mix(in oklab, var(--panel) 70%, transparent);
}
.logo{ height:26px; opacity:.9; filter: grayscale(1) contrast(1.1); }

/* ========== Lists / content ========== */
.content{ padding: 12px 0; }
.content h2{ margin: 10px 0 12px; font-size: clamp(22px, 2.8vw, 32px); }
.lead{ color:var(--muted); max-width:70ch; }

/* ========== Footer ========== */
footer{
  margin-top:40px; padding:28px 20px; border-top:1px solid rgba(148,163,184,.18);
  color:var(--muted);
}
footer .links{ display:flex; gap:14px; flex-wrap:wrap; }

/* ========== Forms ========== */
form .row{ display:grid; gap:12px; grid-template-columns:1fr 1fr; }
@media (max-width:720px){ form .row{ grid-template-columns:1fr; } }
input, textarea{
  width:100%; padding:12px 14px; border-radius:12px;
  border:1px solid rgba(148,163,184,.28); background:var(--panel-2); color:var(--text);
}
textarea{ min-height:140px; resize:vertical; }
button[type=submit]{ cursor:pointer }

/* ========== Utilities ========== */
.badge{ font-size:.78rem; padding:4px 8px; border-radius:999px; border:1px solid rgba(148,163,184,.25); color:var(--muted); }
.stack{ display:flex; gap:8px; flex-wrap:wrap; }

/* Optional: nicer long-form content */
.prose p { margin: 0 0 0.8rem; }
.prose ul { margin: 0.4rem 0 0; padding-left: 1.1rem; }
.prose li { margin: 0.35rem 0; }

/* === Dark mode toggle === */
.theme-toggle {
  position: fixed; right: 16px; bottom: 16px; z-index: 1001;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 12px; border-radius: 999px;
  background: color-mix(in oklab, var(--panel) 85%, transparent);
  border: 1px solid rgba(148,163,184,.25);
  box-shadow: var(--shadow);
  cursor: pointer; user-select: none;
}
.theme-toggle .icon { width: 18px; height: 18px; display: inline-block; }

/* honor saved theme */
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"]  { color-scheme: dark; }

/* === Tech badges (hero) === */
.badges {
  display:flex; flex-wrap:wrap; gap:10px; margin-top:10px;
}
.badge.tech {
  display:inline-flex; align-items:center; gap:8px;
  padding:6px 10px; border-radius:999px;
  border:1px solid rgba(148,163,184,.25);
  background: color-mix(in oklab, var(--panel) 70%, transparent);
  font-size:.9rem; color: var(--text);
}
.badge.tech .dot {
  width:10px; height:10px; border-radius:999px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
  box-shadow: 0 0 6px var(--brand-2);
}

/* === Terminal "whoami" block === */
.terminal {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  padding:18px; border-radius:12px;
  background: var(--panel-2);
  border:1px solid rgba(148,163,184,.22);
  position: relative; overflow: hidden;
}
.terminal::before{
  content:"● ● ●";
  position:absolute; left:14px; top:8px; letter-spacing:6px;
  color: rgba(148,163,184,.7); font-size:14px;
}
.terminal .prompt { color:#22d3ee; }
.terminal .cmd    { color:#60a5fa; }

/* === Small status strip (deploy badge) === */
.status-strip {
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  padding:10px 12px; border-radius:12px;
  background: color-mix(in oklab, var(--panel) 70%, transparent);
  border:1px dashed rgba(148,163,184,.25);
  margin-top:12px;
}
.status-strip .ok     { color:#34d399; }
.status-strip .muted  { color:var(--muted); }