/* Nexus Theory — public placeholder site. Dark cosmic brand styling. */
:root {
  --bg-0: #0a0b10;
  --bg-1: #0e1016;
  --bg-2: #14161f;
  --line: rgba(236, 228, 211, 0.10);
  --line-2: rgba(236, 228, 211, 0.06);
  --ink: #ece4d3;
  --ink-2: #b6bccb;
  --ink-3: #7c8497;
  --ink-4: #565d70;
  --coral: #d8654a;
  --teal: #57a0bd;
  --star: #f4d58a;
  --pos: #4bbf7b;
  --r: 12px;
  --maxw: 880px;
  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, 'Segoe UI', sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-2);
  background: var(--bg-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Cosmic backdrop */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(216, 101, 74, 0.10), transparent 60%),
    radial-gradient(1000px 700px at 10% 110%, rgba(87, 160, 189, 0.10), transparent 60%),
    var(--bg-0);
}

a { color: var(--teal); text-decoration: none; }
a:hover { color: var(--ink); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Header */
header.site {
  padding: 22px 0;
  border-bottom: 1px solid var(--line-2);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
header.site img.logo { height: 40px; width: auto; display: block; }
header.site nav a { color: var(--ink-3); font-size: 14px; font-weight: 500; margin-left: 22px; }
header.site nav a:hover { color: var(--ink); }

/* Main */
main { flex: 1; }

/* Hero */
.hero { text-align: center; padding: clamp(48px, 9vw, 110px) 0 64px; }
.hero img.mark { width: min(280px, 60vw); height: auto; margin: 0 auto 34px; display: block; filter: drop-shadow(0 18px 50px rgba(0, 0, 0, 0.6)); }
.eyebrow {
  font-family: var(--font-body); font-size: 12px; font-weight: 600;
  letter-spacing: 0.28em; text-transform: uppercase; color: var(--teal); margin: 0 0 18px;
}
.hero h1 {
  font-family: var(--font-display); font-weight: 600; color: var(--ink);
  font-size: clamp(30px, 6vw, 52px); line-height: 1.08; letter-spacing: -0.02em; margin: 0 auto 20px; max-width: 16ch;
}
.hero p.lede { font-size: clamp(16px, 2.4vw, 19px); color: var(--ink-2); max-width: 54ch; margin: 0 auto; }

/* Newsletter */
.signup { max-width: 480px; margin: 40px auto 0; }
.signup form { display: flex; gap: 10px; flex-wrap: wrap; }
.signup input[type="email"] {
  flex: 1; min-width: 220px; height: 48px; padding: 0 16px; border-radius: var(--r);
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink); font-size: 15px; font-family: inherit; outline: none;
}
.signup input[type="email"]:focus { border-color: var(--teal); }
.btn {
  height: 48px; padding: 0 22px; border-radius: var(--r); border: 0; cursor: pointer;
  font-family: var(--font-display); font-weight: 600; font-size: 15px; color: #0a0b10;
  background: linear-gradient(135deg, var(--coral), var(--star)); transition: filter .15s, transform .05s;
}
.btn:hover { filter: brightness(1.08); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: 0.55; cursor: default; }
.signup .note { font-size: 13px; color: var(--ink-4); margin: 12px 2px 0; min-height: 18px; }
.signup .note.ok { color: var(--pos); }
.signup .note.err { color: var(--coral); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* Content pages */
.page { padding: 56px 0 72px; }
.page h1 { font-family: var(--font-display); font-weight: 600; color: var(--ink); font-size: clamp(26px, 5vw, 38px); letter-spacing: -0.01em; margin: 0 0 6px; }
.page .updated { font-size: 13px; color: var(--ink-4); margin: 0 0 32px; }
.page h2 { font-family: var(--font-display); font-weight: 600; color: var(--ink); font-size: 19px; margin: 32px 0 8px; }
.page p, .page li { font-size: 15px; color: var(--ink-2); }
.page a { text-decoration: underline; text-underline-offset: 2px; }

/* Contact form */
.form-card { max-width: 560px; }
.field { display: flex; flex-direction: column; gap: 7px; margin-bottom: 16px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink-3); }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: var(--r);
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink); font-size: 15px; font-family: inherit; outline: none;
}
.field input:focus, .field textarea:focus { border-color: var(--teal); }
.field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 14px; margin-top: 14px; min-height: 20px; }
.form-note.ok { color: var(--pos); }
.form-note.err { color: var(--coral); }
.muted { color: var(--ink-4); font-size: 14px; }

/* Footer */
footer.site { border-top: 1px solid var(--line-2); padding: 28px 0; margin-top: 40px; }
footer.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; }
footer.site .copy { font-size: 13px; color: var(--ink-4); }
footer.site nav a { font-size: 13px; color: var(--ink-3); margin-left: 18px; }
footer.site nav a:first-child { margin-left: 0; }
footer.site nav a:hover { color: var(--ink); }