/* ============================================================
   RubyNav Inc. — Corporate site
   2026 executive dark theme · ruby accent
   ============================================================ */

:root {
  --bg: #0b0a0f;
  --bg-alt: #110f17;
  --surface: #171420;
  --surface-2: #1e1a29;
  --line: rgba(255, 255, 255, 0.08);
  --text: #f4f1f6;
  --muted: #a49bb3;
  --ruby: #e0115f;
  --ruby-2: #ff4d7d;
  --ruby-deep: #8e0f3c;
  --light-bg: #f6f3ef;
  --light-text: #17131e;
  --light-muted: #5d5568;
  --radius: 20px;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, "Segoe UI", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 28px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.6rem, 6.5vw, 4.8rem); line-height: 1.04; }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.12; }
h3 { font-size: 1.7rem; }
h4 { font-size: 1.05rem; font-weight: 600; }
h5 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); margin-bottom: 14px; }

.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--ruby-2);
  margin-bottom: 18px;
}

.lede { font-size: 1.12rem; line-height: 1.75; margin-bottom: 20px; }
.muted { color: var(--muted); }
.ruby-text {
  background: linear-gradient(100deg, var(--ruby-2), var(--ruby) 55%, #b1124e);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  padding: 15px 30px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  font-family: var(--font-body);
}
.btn:hover { transform: translateY(-2px); }
.btn-ruby {
  background: linear-gradient(120deg, var(--ruby-2), var(--ruby) 60%, var(--ruby-deep));
  color: #fff;
  box-shadow: 0 8px 30px rgba(224, 17, 95, 0.35);
}
.btn-ruby:hover { box-shadow: 0 12px 40px rgba(224, 17, 95, 0.5); }
.btn-ghost {
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.03);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }
.btn-dark { background: var(--light-text); color: #fff; }
.btn-small { padding: 10px 22px; font-size: 0.88rem; }
.btn-wide { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(11, 10, 15, 0.82);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line);
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--text); }
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: conic-gradient(from 210deg, var(--ruby-2), var(--ruby-deep), var(--ruby), var(--ruby-2));
  box-shadow: 0 0 22px rgba(224, 17, 95, 0.55);
  position: relative;
}
.brand-mark::after {
  content: ""; position: absolute; inset: 8px;
  background: var(--bg); border-radius: 4px; transform: rotate(45deg);
}
.brand-word { font-family: var(--font-display); font-size: 1.25rem; font-weight: 600; }
.brand-word em { font-style: normal; color: var(--ruby-2); }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 0.92rem; font-weight: 500;
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-cta { flex-shrink: 0; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 6px 0; transition: 0.3s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 190px 0 110px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: -1; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; }
.orb-1 { width: 560px; height: 560px; top: -180px; right: -120px; background: radial-gradient(circle, rgba(224,17,95,0.55), transparent 65%); }
.orb-2 { width: 480px; height: 480px; bottom: -220px; left: -160px; background: radial-gradient(circle, rgba(120,40,180,0.35), transparent 65%); }
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
}
.hero-inner { max-width: 900px; }
.hero-sub { font-size: 1.2rem; color: var(--muted); max-width: 620px; margin: 28px 0 36px; line-height: 1.75; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 72px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.hero-stats dt { font-family: var(--font-display); font-size: 1.9rem; font-weight: 500; }
.hero-stats dd { color: var(--muted); font-size: 0.86rem; margin-top: 4px; }

/* ---------- Marquee ---------- */
.marquee {
  border-block: 1px solid var(--line);
  padding: 22px 0;
  overflow: hidden;
  background: var(--bg-alt);
}
.marquee-track {
  display: flex; align-items: center; gap: 44px;
  white-space: nowrap;
  width: max-content;
  animation: scroll 28s linear infinite;
}
.marquee-track span {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: rgba(244, 241, 246, 0.55);
}
.marquee-track i { color: var(--ruby); font-size: 0.6rem; font-style: normal; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }
.section-head { max-width: 680px; margin-bottom: 64px; }
.section-sub { color: var(--muted); font-size: 1.08rem; margin-top: 18px; }
.split {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 72px;
  align-items: start;
}
.split h2 { margin-bottom: 8px; }
.split .btn { margin-top: 10px; }

/* ---------- Portfolio cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(224, 17, 95, 0.45);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.card-flagship {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(224,17,95,0.16), var(--surface) 55%);
  border-color: rgba(224, 17, 95, 0.35);
}
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 22px; gap: 12px; }
.chip {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em;
  padding: 6px 12px; border-radius: 100px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--muted);
}
.chip-flag { background: linear-gradient(120deg, var(--ruby-2), var(--ruby)); color: #fff; }
.card-domain { font-size: 0.8rem; color: var(--muted); font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.card h3 { margin-bottom: 4px; }
.card-tag { color: var(--ruby-2); font-weight: 600; font-size: 0.94rem; margin-bottom: 14px; }
.card p:not(.card-tag) { color: var(--muted); font-size: 0.95rem; flex: 1; }
.card-links { display: flex; gap: 20px; margin-top: 24px; flex-wrap: wrap; }
.card-links a {
  color: var(--text); font-size: 0.88rem; font-weight: 600; text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.25); padding-bottom: 2px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.card-links a:hover { color: var(--ruby-2); border-color: var(--ruby-2); }
.card-note { font-size: 0.82rem; color: var(--muted); font-style: italic; }

/* ---------- Features ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.feature {
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.feature-num {
  font-family: var(--font-display);
  color: var(--ruby-2);
  font-size: 0.95rem;
  margin-bottom: 16px;
}
.feature h4 { margin-bottom: 10px; }
.feature p { color: var(--muted); font-size: 0.93rem; }

/* ---------- Consulting (light) ---------- */
.section-light { background: var(--light-bg); color: var(--light-text); }
.section-light .eyebrow { color: var(--ruby); }
.section-light .lede { color: var(--light-muted); }
.service-list { list-style: none; }
.service-list li {
  padding: 26px 0;
  border-bottom: 1px solid rgba(23, 19, 30, 0.12);
}
.service-list li:first-child { padding-top: 6px; }
.service-list h4 { margin-bottom: 6px; }
.service-list p { color: var(--light-muted); font-size: 0.95rem; }

/* ---------- Contact ---------- */
.contact-meta {
  display: grid;
  grid-template-columns: repeat(3, auto);
  justify-content: start;
  gap: 64px;
  margin-bottom: 54px;
  padding: 28px 0;
  border-block: 1px solid var(--line);
}
.contact-meta h5 { margin-bottom: 8px; }
.contact-meta a, .contact-meta p {
  color: var(--text);
  text-decoration: none;
  font-size: 0.98rem;
  line-height: 1.6;
}
.contact-meta a:hover { color: var(--ruby-2); }
.contact-form { max-width: 640px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.contact-form label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.contact-form input,
.contact-form select,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 15px 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s ease;
}
.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--ruby);
}
.contact-form textarea { resize: vertical; }
.form-status { margin-top: 16px; font-size: 0.95rem; min-height: 1.4em; }
.form-status.ok { color: #6fe3a1; }
.form-status.err { color: var(--ruby-2); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); background: var(--bg-alt); padding-top: 70px; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 54px;
}
.footer-brand p { color: var(--muted); font-size: 0.92rem; margin-top: 18px; line-height: 1.8; }
.footer-brand p a { display: inline; margin: 0; color: var(--muted); text-decoration: none; }
.footer-brand p a:hover { color: var(--text); }
.footer-grid a, .footer-grid span {
  display: block;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}
.footer-grid a:hover { color: var(--text); }
.footer-base {
  border-top: 1px solid var(--line);
  padding-top: 26px;
  padding-bottom: 32px;
}
.footer-base p { color: rgba(164, 155, 179, 0.7); font-size: 0.8rem; }

/* ---------- Reveal animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }
.d1 { transition-delay: 0.1s; }
.d2 { transition-delay: 0.2s; }
.d3 { transition-delay: 0.3s; }
.d4 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .card-flagship { grid-column: span 2; }
  .feature-grid { grid-template-columns: 1fr 1fr; gap: 34px 22px; }
  .split { grid-template-columns: 1fr; gap: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 28px; }
}

@media (max-width: 680px) {
  .section { padding: 80px 0; }
  .hero { padding: 150px 0 80px; }
  .cards { grid-template-columns: 1fr; }
  .card-flagship { grid-column: span 1; }
  .feature-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .contact-meta { grid-template-columns: 1fr; gap: 24px; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(11, 10, 15, 0.97);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--line);
    padding: 12px 28px 20px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 0; font-size: 1.05rem; }
  .nav-toggle { display: block; margin-left: auto; }
  .nav-cta { display: none; }
  .nav-links { margin-left: 0; }
  .nav { background: rgba(11, 10, 15, 0.82); backdrop-filter: blur(18px); border-bottom-color: var(--line); }
}