/* Harmonia Nexus Shared Stylesheet
   Purpose: Shared brand and page styles for Harmonia Nexus pages living inside Armentrout.org for now,
   with a clean path to a future standalone site.
*/

:root {
  --hn-bg-1: #050816;
  --hn-bg-2: #0b1330;
  --hn-bg-3: #121c47;
  --hn-surface: rgba(12, 20, 52, 0.78);
  --hn-surface-strong: rgba(18, 28, 71, 0.92);
  --hn-surface-soft: rgba(255, 255, 255, 0.035);
  --hn-text: #eef4ff;
  --hn-text-muted: #c6d3f7;
  --hn-text-soft: #9fb1de;
  --hn-accent: #7fd4ff;
  --hn-accent-2: #b07cff;
  --hn-accent-3: #ff7bc8;
  --hn-border: rgba(128, 172, 255, 0.26);
  --hn-border-soft: rgba(255, 255, 255, 0.1);
  --hn-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
  --hn-shadow-soft: 0 14px 30px rgba(0, 0, 0, 0.16);
  --hn-font-heading: "Orbitron", "Sora", "Inter", sans-serif;
  --hn-font-body: "Inter", "Segoe UI", sans-serif;
  --hn-max-width: 1180px;
  --hn-radius-md: 20px;
  --hn-radius-lg: 24px;
  --hn-radius-xl: 28px;
  --hn-ease: 0.22s ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body.hn-page {
  margin: 0;
  color: var(--hn-text);
  font-family: var(--hn-font-body);
  background:
    radial-gradient(circle at top left, rgba(176, 124, 255, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(127, 212, 255, 0.12), transparent 24%),
    radial-gradient(circle at 50% 110%, rgba(255, 123, 200, 0.10), transparent 30%),
    linear-gradient(160deg, var(--hn-bg-1) 0%, var(--hn-bg-2) 46%, var(--hn-bg-3) 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

body.hn-page::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.45;
  background-image:
    radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.8), transparent),
    radial-gradient(2px 2px at 120px 80px, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.5px 1.5px at 240px 160px, rgba(127,212,255,0.8), transparent),
    radial-gradient(2px 2px at 340px 40px, rgba(176,124,255,0.8), transparent),
    radial-gradient(1.5px 1.5px at 500px 140px, rgba(255,255,255,0.7), transparent),
    radial-gradient(2px 2px at 680px 70px, rgba(255,123,200,0.7), transparent),
    radial-gradient(1.5px 1.5px at 840px 200px, rgba(255,255,255,0.65), transparent),
    radial-gradient(2px 2px at 1020px 120px, rgba(127,212,255,0.7), transparent);
  background-size: 1100px 420px;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

.hn-container {
  max-width: var(--hn-max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  position: relative;
  z-index: 1;
}

.hn-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(14px);
  background: rgba(4, 9, 24, 0.74);
  border-bottom: 1px solid rgba(127, 212, 255, 0.14);
}

.hn-nav-wrap {
  max-width: var(--hn-max-width);
  margin: 0 auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.hn-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--hn-text);
}

.hn-brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(127, 212, 255, 0.18), rgba(176, 124, 255, 0.28));
  border: 1px solid rgba(127, 212, 255, 0.2);
  box-shadow: var(--hn-shadow);
  overflow: hidden;
}

.hn-brand-mark img {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.hn-brand-title,
.hn-display,
.hn-title,
.hn-section-title,
.hn-card-title,
.hn-label,
.hn-footer-tagline {
  font-family: var(--hn-font-heading);
}

.hn-brand-title {
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hn-brand-sub {
  font-size: 0.74rem;
  color: var(--hn-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.hn-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hn-nav a {
  text-decoration: none;
  color: var(--hn-text-muted);
  font-size: 0.95rem;
  transition: color var(--hn-ease);
}

.hn-nav a:hover,
.hn-nav a.active { color: var(--hn-text); }

.hn-nav-return {
  color: var(--hn-accent) !important;
  border-left: 1px solid rgba(127,212,255,0.18);
  padding-left: 0.9rem;
  margin-left: 0.1rem;
}

.hn-section { padding: 1.5rem 0; }
.hn-section-lg { padding: 4.6rem 0 3rem; }

.hn-panel {
  background: var(--hn-surface);
  border: 1px solid var(--hn-border);
  border-radius: var(--hn-radius-lg);
  box-shadow: var(--hn-shadow);
  padding: 1.75rem;
}

.hn-card {
  position: relative;
  background: var(--hn-surface-strong);
  border: 1px solid var(--hn-border-soft);
  border-radius: var(--hn-radius-md);
  padding: 1.35rem 1.2rem;
  overflow: hidden;
}

.hn-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--hn-accent), var(--hn-accent-2), var(--hn-accent-3));
  opacity: 0.9;
}

.hn-card-soft {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 1.15rem 1rem;
  border-radius: 18px;
  background: var(--hn-surface-soft);
  border: 1px solid rgba(255,255,255,0.08);
  min-height: 100%;
  transition: transform var(--hn-ease), border-color var(--hn-ease), background var(--hn-ease);
}

.hn-card-soft:hover {
  transform: translateY(-2px);
  border-color: rgba(127,212,255,0.24);
  background: rgba(255,255,255,0.055);
}

.hn-label {
  display: inline-block;
  margin-bottom: 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--hn-accent);
}

.hn-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hn-accent);
  border: 1px solid rgba(127, 212, 255, 0.22);
  background: rgba(127, 212, 255, 0.08);
  margin-bottom: 1.25rem;
}

.hn-display {
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.hn-title {
  margin: 0.45rem 0 1rem;
  font-size: clamp(1.02rem, 2vw, 1.35rem);
  font-weight: 600;
  color: var(--hn-accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hn-section-title {
  margin: 0 0 0.75rem;
  font-size: 1.45rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hn-card-title {
  margin: 0 0 0.35rem;
  font-size: 0.96rem;
  color: var(--hn-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.35;
}

.hn-lead {
  margin: 0 0 1rem;
  font-size: 1.04rem;
  line-height: 1.8;
  color: var(--hn-text-muted);
  max-width: 60ch;
}

.hn-body {
  margin: 0;
  line-height: 1.85;
  color: var(--hn-text-muted);
}

.hn-caption {
  margin: 0;
  color: var(--hn-text-soft);
  font-size: 0.94rem;
  line-height: 1.65;
}

.hn-grid-2 {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 2rem;
  align-items: center;
}

.hn-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.hn-grid-6 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.hn-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.4rem;
}

.hn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.92rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--hn-ease), box-shadow var(--hn-ease), background var(--hn-ease), border-color var(--hn-ease);
}

.hn-btn:hover { transform: translateY(-2px); }

.hn-btn-primary {
  color: #08111f;
  background: linear-gradient(135deg, var(--hn-accent), #d2f3ff);
  box-shadow: 0 18px 30px rgba(127, 212, 255, 0.18);
}

.hn-btn-secondary {
  color: var(--hn-text);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
}

.hn-strip {
  margin-top: 1.5rem;
  padding: 1rem 1.15rem;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(127, 212, 255, 0.10), rgba(176, 124, 255, 0.12));
  border: 1px solid rgba(127, 212, 255, 0.18);
  box-shadow: var(--hn-shadow-soft);
}

.hn-strip p {
  margin: 0;
  color: var(--hn-text);
  line-height: 1.8;
}

.hn-hero-art {
  position: relative;
  padding: 1.4rem;
  border-radius: var(--hn-radius-xl);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--hn-border);
  box-shadow: var(--hn-shadow);
  overflow: hidden;
}

.hn-hero-art::before {
  content: "";
  position: absolute;
  inset: -20% auto auto -10%;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(176,124,255,0.34) 0%, transparent 70%);
}

.hn-hero-art::after {
  content: "";
  position: absolute;
  inset: auto -8% -16% auto;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(127,212,255,0.28) 0%, transparent 68%);
}

.hn-logo-card {
  position: relative;
  z-index: 1;
  min-height: 420px;
  border-radius: 22px;
  background:
    radial-gradient(circle at center, rgba(255,255,255,0.08), transparent 60%),
    linear-gradient(180deg, rgba(11,19,48,0.85), rgba(5,8,22,0.85));
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.hn-logo-card img {
  max-height: 320px;
  filter: drop-shadow(0 20px 35px rgba(0, 0, 0, 0.28));
}

.hn-icon-tile {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(127,212,255,0.18), rgba(176,124,255,0.22));
  border: 1px solid rgba(127,212,255,0.16);
  box-shadow: var(--hn-shadow-soft);
  color: var(--hn-text);
}

.hn-icon-tile svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hn-vision-band {
  padding: 1.25rem 1.5rem;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(127,212,255,0.12), rgba(176,124,255,0.14));
  border: 1px solid rgba(127, 212, 255, 0.2);
  box-shadow: var(--hn-shadow-soft);
  text-align: center;
}

.hn-vision-band p {
  margin: 0;
  max-width: 78ch;
  margin-inline: auto;
  line-height: 1.8;
  color: var(--hn-text);
}

.hn-follow-box {
  margin-top: 1.25rem;
  padding: 1.25rem;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(127,212,255,0.05));
  border: 1px solid rgba(127, 212, 255, 0.14);
}

.hn-signup-placeholder {
  margin-top: 1rem;
  padding: 0.95rem 1rem;
  border-radius: 16px;
  border: 1px dashed rgba(176, 124, 255, 0.36);
  background: rgba(176, 124, 255, 0.06);
  color: var(--hn-text-muted);
  font-size: 0.94rem;
  line-height: 1.65;
}

.hn-footer {
  padding: 2rem 0 3rem;
}

.hn-footer-inner {
  max-width: var(--hn-max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hn-footer-tagline {
  color: var(--hn-accent);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.55rem;
}

.hn-footer-copy {
  color: var(--hn-text-muted);
  font-size: 0.95rem;
}

@media (max-width: 960px) {
  .hn-grid-2,
  .hn-grid-3,
  .hn-grid-6 {
    grid-template-columns: 1fr;
  }

  .hn-logo-card { min-height: 300px; }
}

@media (max-width: 640px) {
  .hn-container { padding: 0 1rem; }

  .hn-nav-wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .hn-nav { gap: 0.75rem 1rem; }
  .hn-panel { padding: 1.3rem; }
  .hn-actions { flex-direction: column; }
  .hn-btn { width: 100%; }
  .hn-nav-return {
    border-left: 0;
    padding-left: 0;
    margin-left: 0;
  }
}