:root {
  --bg: #020617;
  --fg: #eef2ff;
  --muted: #9ca3af;
  --accent: #6BF3FF;
  --gold: #facc15;
  --silver: #e5e7eb;
  --titanium: #a855f7;
  --comet: #38bdf8;
  --card: #050816;
  --line: #1f2937;
  --primary: var(--comet);
  --btn: #020617;
}

*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(circle at 15% 0%, #0f172a 0, #020617 40%, #000 100%);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

body { cursor: none; }

.mono, code, pre {
  font-family: "Courier New", Courier, monospace;
  font-size: 0.95rem;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page {
  position: relative;
  z-index: 3;
  padding: 3rem 1.5rem 4rem;
}

.section {
  max-width: 960px;
  margin: 0 auto 3rem;
}

.section-card {
  background: radial-gradient(circle at top, rgba(255,255,255,0.05), transparent 65%);
  border-radius: 22px;
  padding: 2.25rem 2.5rem;
  box-shadow: 0 18px 65px rgba(0,0,0,0.75);
  border: 1px solid rgba(255,255,255,0.06);
}

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-top: 0;
  margin-bottom: 0.9rem;
}

h1 { font-size: clamp(2.1rem, 3.4vw, 2.8rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.3rem, 2.3vw, 1.6rem); }

.hero { text-align: center; }

.hero h1 {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  letter-spacing: 0.06em;
  font-weight: 800;
}

.hero .sub {
  opacity: 0.95;
  margin-top: 0.75rem;
}

.lead { font-size: 1.05rem; opacity: 0.95; }
.micro { font-size: 0.85rem; color: var(--muted); }

.qre-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(3,7,18,0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(15,23,42,0.9);
}

.qre-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

.logo {
  font-weight: 800;
  letter-spacing: 0.04em;
}
.logo span {
  opacity: 0.7;
  margin-left: 0.25rem;
  font-size: 0.8em;
}

.nav a {
  margin-left: 1rem;
  opacity: 0.9;
  font-weight: 500;
}
.nav a[aria-current="page"] {
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.2rem;
}

.qre-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background: #020617;
}
.qre-footer .container {
  padding: 2rem 1.5rem 2.5rem;
}
.qre-footer .cols {
  display: grid;
  grid-template-columns: minmax(0,2fr) minmax(0,1fr) minmax(0,1fr);
  gap: 1.5rem;
}
.tagline { opacity: 0.8; }

.qre-footer h4 { margin-bottom: 0.6rem; }
.qre-footer ul { list-style: none; padding: 0; margin: 0; }
.qre-footer li { margin-bottom: 0.35rem; }

.btn {
  display: inline-block;
  padding: 0.75rem 1.2rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--btn);
  color: #e5e7eb;
  font-weight: 600;
  cursor: pointer;
}
.btn.primary {
  background: linear-gradient(135deg, var(--comet), var(--titanium));
  color: #020617;
  border-color: rgba(250,250,250,0.5);
}
.btn:hover { filter: brightness(1.08); }

.intake,
.auth-form,
.qre-chat-form {
  display: grid;
  gap: 0.9rem;
  max-width: 600px;
}

.intake input,
.intake textarea,
.auth-form input,
.qre-chat-form input,
.qre-chat-form select {
  width: 100%;
  padding: 0.65rem 0.7rem;
  border-radius: 10px;
  border: 1px solid #1f2937;
  background: #000;
  color: #f9fafb;
}

.qre-chat-input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
}

#qre-input {
  padding: 0.6rem 0.8rem;
  border-radius: 999px;
  border: 1px solid #4b5563;
  background: #020617;
  color: #e5e7eb;
}

.tile-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}

.tile {
  background: rgba(8,10,20,0.95);
  border-radius: 18px;
  padding: 1.25rem 1.4rem;
  border: 1px solid rgba(148,163,184,0.24);
}

.columns-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.4rem;
}

#cosmos {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
#starfield {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.qre-reply {
  margin-top: 0.4rem;
  min-height: 2.2rem;
  font-size: 0.95rem;
  white-space: pre-wrap;
}

.alert {
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}
.alert-info {
  background: rgba(56,189,248,0.06);
  border: 1px solid rgba(56,189,248,0.4);
}
.alert-error {
  background: rgba(248,113,113,0.08);
  border: 1px solid rgba(248,113,113,0.4);
}

.comet-dot {
  position: fixed;
  width: 9px;
  height: 9px;
  pointer-events: none;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #ffffff, var(--comet), transparent 70%);
  box-shadow:
    0 0 12px rgba(56,189,248,0.9),
    0 0 32px rgba(248,250,252,0.7);
  mix-blend-mode: screen;
  z-index: 99999;
}

@media (max-width: 640px) {
  .section-card { padding: 1.6rem 1.4rem; }
  .qre-header .container {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav a { margin-left: 0.6rem; }
}