/*
Theme Name: Aisend Rebuild
Description: AI Infrastructure Company - ORBIT, EchOS, AI Systems
Version: 1.1.0
*/

:root {
  --color-bg: #FFFFFF;
  --color-text: #0A0A0A;
  --color-border: #E5E5E5;
  --color-muted: #5C5C5C;
  --color-light: #F5F5F5;
  --color-dark-bg: #0A0A0A;
  --color-dark-text: #FFFFFF;
  --max-width: 1200px;
  --spacing: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 calc(var(--spacing) * 3);
}

h1 { font-size: 48px; line-height: 1.1; margin-bottom: calc(var(--spacing) * 3); font-weight: 700; }
h2 { font-size: 36px; line-height: 1.2; margin: calc(var(--spacing) * 6) 0 calc(var(--spacing) * 3); font-weight: 700; }
h3 { font-size: 24px; line-height: 1.3; margin: calc(var(--spacing) * 4) 0 calc(var(--spacing) * 2); font-weight: 600; }
p { margin-bottom: calc(var(--spacing) * 2); color: var(--color-text); }
ul { margin: 0 0 calc(var(--spacing) * 3) calc(var(--spacing) * 3); }
li { margin-bottom: var(--spacing); }

.btn-primary {
  background: #0A0A0A;
  color: #FFF;
  padding: 16px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  display: inline-block;
  transition: opacity 150ms ease;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { opacity: 0.85; }
.btn-primary-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-text);
  padding: 14px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  display: inline-block;
  transition: all 150ms ease;
}
.btn-primary-outline:hover { background: var(--color-text); color: #FFF; }

.card {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
  background: #FFF;
  margin-bottom: calc(var(--spacing) * 3);
}

header {
  border-bottom: 1px solid var(--color-border);
  padding: calc(var(--spacing) * 3) 0;
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 100;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--spacing) * 4);
}
.logo { font-size: 24px; font-weight: 700; text-decoration: none; color: var(--color-text); white-space: nowrap; }
header nav { display: flex; gap: calc(var(--spacing) * 3); align-items: center; flex-wrap: wrap; }
.nav-group { display: flex; align-items: center; gap: calc(var(--spacing) * 2); }
.nav-group-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--color-muted); }
header nav a { text-decoration: none; color: var(--color-text); font-weight: 500; font-size: 14px; white-space: nowrap; }
header nav a:hover { opacity: 0.7; }
.nav-emphasis {
  background: #0A0A0A;
  color: #FFF !important;
  padding: 4px 12px;
  border-radius: 4px;
}

main { padding: calc(var(--spacing) * 8) 0; min-height: 60vh; }
section { margin-bottom: calc(var(--spacing) * 8); }

.section-light {
  background: var(--color-light);
  padding: calc(var(--spacing) * 8) 0;
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}
.section-light .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 calc(var(--spacing) * 3);
}
.section-dark {
  background: var(--color-dark-bg);
  color: var(--color-dark-text);
  padding: calc(var(--spacing) * 8) 0;
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}
.section-dark .container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 calc(var(--spacing) * 3);
}
.section-dark h2, .section-dark p { color: var(--color-dark-text); }
.section-dark .btn-primary { background: #FFF; color: #0A0A0A; }

footer {
  border-top: 1px solid var(--color-border);
  padding: calc(var(--spacing) * 6) 0;
  margin-top: calc(var(--spacing) * 8);
}
footer .footer-nav ul { display: flex; list-style: none; gap: calc(var(--spacing) * 3); margin: 0 0 calc(var(--spacing) * 3); flex-wrap: wrap; }
footer .footer-nav a { text-decoration: none; color: var(--color-muted); }
footer p { color: var(--color-muted); margin-bottom: calc(var(--spacing) * 3); }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: calc(var(--spacing) * 3); }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: calc(var(--spacing) * 4); }
.flow { font-size: 20px; font-weight: 600; text-align: center; padding: calc(var(--spacing) * 4) 0; }
.cta-section { text-align: center; padding: calc(var(--spacing) * 6) 0; border-top: 1px solid var(--color-border); margin-top: calc(var(--spacing) * 8); }

.hero {
  padding: calc(var(--spacing) * 8) 0;
}
.hero h1 { font-size: 56px; max-width: 900px; }
.hero p { font-size: 20px; max-width: 700px; margin-bottom: calc(var(--spacing) * 4); }

.faq-item { border-bottom: 1px solid var(--color-border); padding: calc(var(--spacing) * 3) 0; }
.faq-item h3 { margin: 0 0 calc(var(--spacing) * 1); cursor: pointer; }

.layer-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  margin-bottom: calc(var(--spacing) * 3);
  color: var(--color-muted);
}

.layer-flow {
  text-align: center;
  padding: calc(var(--spacing) * 6) 0;
}
.layer-flow p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--spacing);
}
.layer-flow-links {
  display: flex;
  justify-content: center;
  gap: calc(var(--spacing) * 2);
  font-size: 14px;
}
.layer-flow-links a { color: var(--color-text); }
.layer-flow-links span { color: var(--color-muted); }

.seq-nav {
  display: flex;
  justify-content: space-between;
  padding: calc(var(--spacing) * 6) 0;
  border-top: 1px solid var(--color-border);
  margin-top: calc(var(--spacing) * 6);
}
.seq-nav a {
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  color: var(--color-text);
}
.seq-nav a:hover { opacity: 0.7; }
.seq-nav .seq-next { text-align: right; }
.seq-nav .seq-label { font-size: 12px; color: var(--color-muted); font-weight: 400; display: block; }

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  header .container { flex-direction: column; align-items: flex-start; }
  header nav { flex-direction: column; align-items: flex-start; width: 100%; }
  .nav-group { flex-wrap: wrap; }
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  .hero h1 { font-size: 36px; }
}