/* Zambian Tech, LLC - Company Site Styles */
/* Light mode, modern, no dependencies */

:root{
  --bg: #ffffff;
  --bg-subtle: #f8fafc;
  --panel: #f1f5f9;
  --text: #0f172a;
  --muted: #475569;
  --faint: #64748b;    /* slate-500, WCAG AA */
  --line: #e2e8f0;
  --accent: #0369a1;   /* sky-700, WCAG AA */
  --accent-bg: #f0f9ff;
  --accent2: #7c3aed;
  --accent2-bg: #f5f3ff;
  --ok: #15803d;       /* green-700, WCAG AA */
  --max: 1120px;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 24px rgba(0,0,0,0.04);
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{ box-sizing: border-box; }
html{ height:100%; }
body{
  margin:0;
  min-height: 100%;
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a{ color: inherit; text-decoration: none; }
a:hover{ opacity: 0.85; }

.container{
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

/* Skip link */
.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:1rem; top:1rem; width:auto; height:auto; padding:0.75rem 1rem;
  background: var(--bg); border:1px solid var(--line); border-radius:12px; z-index: 9999;
  color: var(--text);
}

/* Header */
.header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid var(--line);
}
.nav{
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 0.9rem 0;
  gap: 1rem;
}
.brand{
  display:flex;
  align-items:center;
  gap:0.65rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.brand-mark{
  width: 32px; height: 32px;
  border-radius: 10px;
  background:
    radial-gradient(circle at 30% 30%, #38bdf8, transparent 55%),
    radial-gradient(circle at 70% 70%, #a78bfa, transparent 55%),
    #e0f2fe;
  border: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.nav-cta{
  display:flex; align-items:center; gap:0.5rem;
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 0.45rem;
  padding: 0.6rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.btn:hover{ background: var(--panel); border-color: #cbd5e1; opacity: 1; }
.btn.primary{
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  box-shadow: 0 1px 2px rgba(3,105,161,0.2);
}
.btn.primary:hover{
  background: #075985;
  border-color: #075985;
  opacity: 1;
}
.btn.warm{
  border: 1px solid #b45309;
  background: #b45309;
  color: #fff;
  box-shadow: 0 1px 2px rgba(180,83,9,0.25);
}
.btn.warm:hover{
  background: #92400e;
  border-color: #92400e;
  opacity: 1;
}

/* Hero */
.hero{
  padding: 4rem 0 2.5rem;
  text-align: center;
}
.hero h1{
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
}
.hero .lead{
  margin: 0 auto 1.8rem;
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 55ch;
  line-height: 1.65;
}
.hero-cta{
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section{
  padding: 2rem 0;
}
.section-title{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}
.section-title h2{
  margin:0;
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  font-weight: 700;
}
.section-title .hint{
  color: var(--faint);
  font-size: 0.9rem;
  font-family: var(--mono);
}

/* Grids */
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.2rem;
}

/* Cards */
.card{
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.card:hover{
  box-shadow: var(--shadow);
  border-color: #cbd5e1;
}
.card-icon{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--accent-bg);
  margin-bottom: 0.75rem;
}
.card-icon svg{
  width: 20px; height: 20px;
  stroke: var(--accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.card-icon.violet{ background: var(--accent2-bg); }
.card-icon.violet svg{ stroke: var(--accent2); }
.card-icon.green{ background: #f0fdf4; }
.card-icon.green svg{ stroke: var(--ok); }
.h3{
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  font-weight: 600;
}
.p{
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

/* How it works */
.steps{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 1.2rem;
  counter-reset: step;
}
.step{
  counter-increment: step;
}
.step-number{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}
.step-title{
  font-weight: 600;
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
}
.step-desc{
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

/* CTA section */
.cta-section{
  padding: 2rem 0 2.5rem;
  text-align: center;
}
.cta-section h2{
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.cta-section .sub{
  color: var(--muted);
  margin: 0 auto 1.4rem;
  max-width: 50ch;
}
.cta-buttons{
  display: flex;
  gap: 0.7rem;
  justify-content: center;
  flex-wrap: wrap;
}

.email-block{
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  margin: 0.5rem 0;
}

/* Footer */
.footer{
  padding: 1.5rem 0 2rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.9rem;
  background: var(--bg-subtle);
}
.footer-grid{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer a{ color: var(--muted); }
.footer a:hover{ color: var(--text); opacity: 1; }
.footer-bottom{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.2rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}
.footer-social{
  display: flex;
  gap: 0.75rem;
}
.footer-social a{
  color: var(--faint);
  transition: color 0.15s ease;
}
.footer-social a:hover{ color: var(--text); }
.footer-social svg{
  width: 20px; height: 20px;
  fill: currentColor;
}

/* Responsive */
@media (max-width: 760px){
  .grid-3{ grid-template-columns: 1fr; }
  .steps{ grid-template-columns: 1fr; }
  .nav-cta .btn:first-child{ display:none; }
}