/* Altheris Holding — institutional dark theme */

:root {
  /* Base palette — black / charcoal / graphite */
  --bg: #070A0F;
  --bg-soft: #0B0F16;
  --bg-muted: #111722;
  --panel: #0E131C;
  --line: rgba(255, 255, 255, 0.08);
  --line-soft: rgba(255, 255, 255, 0.05);

  /* Type colors */
  --ink: #F5F6F8;
  --ink-2: #D7DBE2;
  --muted: #9AA3B2;
  --muted-2: #6B7585;

  /* Brand accent — gold (overridable per brand) */
  --accent: #C9A24B;
  --accent-2: #E6C879;
  --accent-soft: rgba(201, 162, 75, 0.12);
  --accent-line: rgba(201, 162, 75, 0.32);
  /* Secondary cool accent (the "futures" blue) */
  --cool: #6FA8DC;

  /* Type */
  --font-serif: "Cormorant Garamond", "Times New Roman", Georgia, serif;
  --font-sans: "Inter", "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Radii */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;

  /* Rhythm */
  --gutter: clamp(20px, 4vw, 56px);
  --max: 1200px;
  --section-y: clamp(72px, 11vw, 160px);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
[hidden] { display: none !important; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  color: var(--ink);
  margin: 0;
  font-weight: 500;
  letter-spacing: 0.005em;
}
h1 { font-size: clamp(44px, 6.4vw, 88px); line-height: 1.02; }
h2 { font-size: clamp(30px, 4vw, 52px); line-height: 1.08; }
h3 { font-size: clamp(20px, 2.2vw, 26px); line-height: 1.25; }
p { margin: 0; }

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.container-narrow { max-width: 820px; }

.kicker {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}
.lede {
  font-family: var(--font-sans);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.7;
  color: var(--muted);
  max-width: 60ch;
}

/* ========= Buttons ========= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 14px 28px;
  border-radius: var(--r-sm);
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-accent {
  background: var(--accent);
  color: #0A0A0A;
}
.btn-accent:hover { background: var(--accent-2); }
.btn-ghost {
  border-color: var(--line);
  color: var(--ink);
}
.btn-ghost:hover { border-color: var(--accent-line); color: var(--accent-2); }
.btn-lg { padding: 16px 34px; font-size: 15px; }

/* ========= Header ========= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(7, 10, 15, 0.72);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand img { height: 42px; width: auto; }
.nav {
  display: flex;
  gap: 38px;
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: 0.02em;
}
.nav a { color: var(--muted); transition: color 0.2s ease; }
.nav a:hover { color: var(--ink); }
.header-actions { display: flex; align-items: center; gap: 18px; }
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav, .header-actions { display: none; }
  .nav-toggle { display: inline-flex; color: var(--ink); }
}

/* ========= Hero ========= */
.hero {
  position: relative;
  padding: clamp(90px, 16vw, 200px) 0 clamp(72px, 12vw, 150px);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(201, 162, 75, 0.10), transparent 60%),
    radial-gradient(900px 500px at 85% 20%, rgba(111, 168, 220, 0.05), transparent 55%);
  pointer-events: none;
}
.hero .container { position: relative; }
.hero h1 { max-width: 16ch; }
.hero h1 .gold { color: var(--accent-2); }
.hero h1 .cool { color: var(--cool); }
.hero .lede { margin-top: 28px; }
.hero .actions { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }

/* ========= Section ========= */
.section { padding: var(--section-y) 0; }
.section-line { border-top: 1px solid var(--line-soft); }
.section-head { max-width: 720px; margin-bottom: clamp(40px, 6vw, 72px); }
.section-head p { margin-top: 18px; }

/* ========= Pillars ========= */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.pillar {
  background: var(--panel);
  padding: clamp(28px, 3.5vw, 44px) clamp(22px, 2.5vw, 32px);
}
.pillar .icon {
  width: 30px; height: 30px;
  color: var(--accent);
  margin-bottom: 22px;
}
.pillar h3 { font-family: var(--font-sans); font-size: 16px; font-weight: 600; color: var(--ink); letter-spacing: 0.01em; }
.pillar p { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.6; }

@media (max-width: 860px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 520px) {
  .pillars { grid-template-columns: 1fr; }
}

/* ========= Statement (large quote) ========= */
.statement { text-align: left; }
.statement p {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.3;
  color: var(--ink);
  max-width: 22ch;
  font-weight: 500;
}
.statement p .accent { color: var(--accent-2); }

/* ========= Ecosystem ========= */
.ecosystem-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.ecosystem-map {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-soft);
}
.ecosystem-card {
  display: block;
  padding: 28px 30px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
  transition: border-color 0.25s ease, transform 0.25s ease;
  margin-bottom: 16px;
}
.ecosystem-card:hover { border-color: var(--accent-line); transform: translateY(-2px); }
.ecosystem-card .eyebrow { font-size: 11px; letter-spacing: 0.28em; text-transform: uppercase; color: var(--muted-2); }
.ecosystem-card h3 { font-family: var(--font-serif); margin-top: 8px; }
.ecosystem-card p { margin-top: 10px; font-size: 14px; color: var(--muted); }
.ecosystem-card .arrow { color: var(--accent); font-size: 13px; margin-top: 14px; display: inline-block; font-family: var(--font-sans); }

@media (max-width: 860px) {
  .ecosystem-grid { grid-template-columns: 1fr; }
}

/* ========= Contact ========= */
.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(36px, 6vw, 80px);
}
.contact-form { display: grid; gap: 16px; }
.contact-form .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--ink);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  transition: border-color 0.2s ease;
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--muted-2); }
.contact-form input:focus,
.contact-form textarea:focus { outline: none; border-color: var(--accent-line); }
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-meta dt { font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted-2); margin-top: 22px; }
.contact-meta dd { margin: 6px 0 0; color: var(--ink-2); font-size: 15px; }

#form-messages { min-height: 0; }
.alert { padding: 12px 16px; border-radius: var(--r-sm); font-size: 14px; margin-bottom: 4px; }
.alert-success { background: rgba(111, 168, 220, 0.12); color: #BcdcF5; border: 1px solid rgba(111, 168, 220, 0.3); }
.alert-error { background: rgba(201, 75, 75, 0.12); color: #E9B5B5; border: 1px solid rgba(201, 75, 75, 0.3); }

@media (max-width: 760px) {
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form .row2 { grid-template-columns: 1fr; }
}

/* ========= Footer ========= */
.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: clamp(48px, 7vw, 80px) 0 40px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}
.footer-brand { max-width: 460px; }
.footer-brand::after { content: ""; display: block; clear: both; }
.footer-brand img { height: 100px; width: auto; float: left; margin: 0 20px 0 0; }
.footer-brand p { font-size: 13px; color: var(--muted-2); overflow: hidden; }
.footer-links { display: flex; gap: 48px; flex-wrap: wrap; }
.footer-col h4 { font-family: var(--font-sans); font-size: 11px; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: var(--muted); margin-bottom: 10px; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: 28px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted-2);
}

/* ========= Page (generic) ========= */
.page-section { padding: clamp(60px, 9vw, 120px) 0; }
.page-section h2 { margin: 40px 0 16px; }
.page-section h3 { margin: 28px 0 12px; color: var(--ink); }
.page-section p { margin-bottom: 18px; color: var(--ink-2); }
.page-section ul { color: var(--ink-2); padding-left: 20px; margin-bottom: 18px; }
.page-section li { margin-bottom: 8px; }
.page-section a { color: var(--accent-2); }