:root {
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --secondary: #475569;
  --light: #f8fafc;
  --dark: #0f172a;
  --muted: #94a3b8;
  --bg: #ffffff;
  --card: #ffffff;
  --border: rgba(15, 23, 42, 0.08);
  --shadow: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -4px rgba(0, 0, 0, .06);
  --radius: 14px;
  --transition: all .25s ease;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --card: #0f172a;
    --dark: #e2e8f0;
    --secondary: #cbd5e1;
    --muted: #94a3b8;
    --border: rgba(148, 163, 184, 0.15);
    --shadow: 0 20px 40px -20px rgba(0, 0, 0, .6);
  }
}
[data-theme="dark"] {
  --bg: #0b1220;
  --card: #0f172a;
  --dark: #e2e8f0;
  --secondary: #cbd5e1;
  --muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.15);
  --shadow: 0 20px 40px -20px rgba(0, 0, 0, .6);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--dark);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.7);
  backdrop-filter: saturate(120%) blur(10px);
  border-bottom: 1px solid var(--border);
}
@media (prefers-color-scheme: dark) {
  header { background: rgba(2,6,23,.6); }
}
.header-inner { display:flex; align-items:center; justify-content:space-between; padding: 14px 0; }
.logo { display:flex; align-items:center; gap: 10px; text-decoration:none; }
.logo-badge {
  width: 36px; height: 36px; border-radius: 10px;
  display:grid; place-items:center; color:#fff;
  background: radial-gradient(120% 120% at 10% 10%, #60a5fa 0%, #2563eb 40%, #1d4ed8 100%);
  box-shadow: inset 0 0 18px rgba(255,255,255,.2), 0 6px 14px rgba(37, 99, 235, .25);
}
.logo-text { font-weight: 800; letter-spacing:.2px; color: var(--dark); font-size: clamp(18px, 2.4vw, 22px); }
.logo-text span { color: var(--primary); }

nav ul { list-style: none; display:flex; gap: 1.6rem; padding:0; margin:0; }
nav a { color: var(--secondary); text-decoration:none; font-weight:600; position:relative; padding:6px 0; transition: var(--transition); }
nav a:hover { color: var(--primary); }
nav a::after { content:""; position:absolute; left:0; bottom:-6px; height:2px; width:0; background: var(--primary); transition: width .25s ease; }
nav a:hover::after { width:100%; }

.actions { display:flex; align-items:center; gap:10px; }
.theme-toggle, .mobile-btn { border:1px solid var(--border); background:var(--card); color:var(--secondary); width:40px; height:40px; border-radius:10px; display:grid; place-items:center; cursor:pointer; transition: var(--transition); }
.theme-toggle:hover, .mobile-btn:hover { transform: translateY(-2px); }
.mobile-btn { display:none; }

/* Hero */
.hero { position:relative; padding: clamp(64px, 8vw, 120px) 0; overflow:hidden; }
.hero::before {
  content:""; position:absolute; inset:-20% -10% auto auto; height: 580px; width: 580px; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(37,99,235,.15), rgba(37,99,235,0) 70%);
  filter: blur(10px); pointer-events:none;
}
.hero-grid { display:grid; grid-template-columns: 1.2fr 1fr; gap:40px; align-items:center; }
.hero h1 { font-size: clamp(32px, 5.2vw, 56px); line-height:1.12; margin:0 0 16px; font-weight: 900; letter-spacing: -.5px; }
.hero p { font-size: clamp(16px, 2vw, 20px); color: var(--secondary); margin: 0 0 24px; max-width: 56ch; }
.highlight { color: var(--primary); position:relative; }
.highlight::after { content:""; position:absolute; left:2px; right:2px; bottom:2px; height:10px; background: rgba(37,99,235,.18); z-index:-1; border-radius:8px; }

.btns { display:flex; flex-wrap:wrap; gap: 12px; }
.btn { --_bg: var(--primary); --_fg: #fff; --_bd: transparent; display:inline-flex; align-items:center; gap:10px; text-decoration:none; padding: 12px 18px; border-radius: 12px; font-weight: 700; border:2px solid var(--_bd); background: var(--_bg); color: var(--_fg); box-shadow: 0 6px 14px rgba(37,99,235,.28); transition: var(--transition); }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(37,99,235,.36); }
.btn.secondary { --_bg: transparent; --_fg: var(--primary); --_bd: var(--primary); box-shadow:none; }

.hero-card {
  background: var(--card); border:1px solid var(--border); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--shadow);
}
.hero-card h3 { margin:0 0 8px; font-size: 16px; color: var(--muted); font-weight:700; text-transform: uppercase; letter-spacing: .1em; }
.stat-row { display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 12px; }
.stat { padding: 16px; border:1px dashed var(--border); border-radius: 12px; display:flex; align-items:center; gap:12px; }
.stat i { font-size: 18px; color: var(--primary); }
.stat strong { display:block; font-size: 20px; }
.stat span { color: var(--muted); font-size: 13px; }

/* Sections */
section { scroll-margin-top: 90px; }
.section { padding: clamp(64px, 8vw, 100px) 0; }
.title { text-align:center; margin-bottom: 46px; }
.title h2 { font-size: clamp(26px, 3.4vw, 40px); margin:0 0 10px; }
.title p { color: var(--secondary); max-width: 760px; margin: 0 auto; }

/* Cards */
.grid { display:grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 26px; }
.card { background: var(--card); border:1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: var(--transition); position:relative; overflow:hidden; }
.card:hover { transform: translateY(-6px); }
.card .icon { width: 58px; height: 58px; border-radius: 12px; background: linear-gradient(135deg, #dbeafe, #e0e7ff); display:grid; place-items:center; color: var(--primary); font-size: 24px; margin-bottom: 16px; }
.card h3 { margin: 0 0 8px; font-size: 20px; }
.card p { margin: 0; color: var(--secondary); }

/* Why */
.why { background: radial-gradient(120% 100% at 0% 0%, #0f172a 0%, #0b1220 100%); color:#fff; }
.why .container { position:relative; }
.why-grid { display:grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items:center; }
.why h2 { font-size: clamp(26px, 3.4vw, 40px); margin:0 0 14px; }
.why p { color:#cbd5e1; }
.bullets { display:grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; margin-top: 20px; }
.bullet { display:flex; gap: 12px; align-items:flex-start; padding: 12px; border:1px solid rgba(255,255,255,.08); border-radius: 12px; background: rgba(255,255,255,.02); }
.bullet i { color:#60a5fa; margin-top: 2px; }

.mock {
  background: linear-gradient(135deg, #1e293b, #0f172a);
  border:1px solid rgba(255,255,255,.08); border-radius: 16px; height: 380px;
  display:grid; place-items:center; position:relative; box-shadow: 0 30px 60px -30px rgba(0,0,0,.6);
}
.mock i { font-size: 84px; opacity: .18; color:#60a5fa; }

/* Brands / Projects */
.brands { display:flex; flex-wrap:wrap; gap: 14px; justify-content:center; margin-top: 18px; }
.brand-badge { border:1px solid var(--border); background: var(--card); border-radius: 999px; padding: 8px 14px; font-weight:700; font-size: 13px; }

/* Footer */
footer { background: #0b1220; color:#e2e8f0; padding: 72px 0 28px; }
.fgrid { display:grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 26px; }
.ft h3 { margin:0 0 10px; font-size: 18px; position:relative; }
.ft ul { list-style:none; padding:0; margin:0; display:grid; gap: 10px; }
.ft a { color:#cbd5e1; text-decoration:none; display:flex; gap:10px; align-items:center; }
.ft a:hover { color:#60a5fa; }
.f-bottom { text-align:center; color:#94a3b8; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.06); margin-top: 30px; font-size: 14px; }

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid, .why-grid { grid-template-columns: 1fr; }
}
@media (max-width: 840px) {
  .grid { grid-template-columns: 1fr 1fr; }
  nav ul { display:none; }
  .mobile-btn { display:grid; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content:center; }
}