/* ═══════════════════════════════════════════════
   MELITRIX, Shared stylesheet
   Pfizer-inspired: navy/sky, clean, science-forward
   ═══════════════════════════════════════════════ */

:root {
  --navy: #0a2540;
  --navy-deep: #001a4d;
  --blue: #0057b8;
  --blue-bright: #0071ce;
  --sky: #009bde;
  --sky-light: #4db8e8;
  --ice: #e8f4fd;
  --ice-deep: #d4e8f8;
  --white: #ffffff;
  --paper: #fafcff;
  --slate: #4a5a6e;
  --slate-dark: #2b3a4f;
  --light-slate: #7a8999;
  --border: #dce8f5;
  --border-soft: #edf3fa;
  --gold: #c9a84c;
  --green: #4ade80;

  --shadow-sm: 0 2px 8px rgba(10,37,64,0.06);
  --shadow-md: 0 8px 24px rgba(10,37,64,0.08);
  --shadow-lg: 0 20px 60px rgba(10,37,64,0.1);
}

/* ── Color treatment: LIGHTER Pfizer blue ── */
body[data-theme="light-blue"] {
  --navy: #004b93;
  --navy-deep: #003d7a;
  --blue: #0071ce;
  --sky: #2aa3e3;
}

/* ── Color treatment: DEEPER navy ── */
body[data-theme="deep-navy"] {
  --navy: #001a4d;
  --navy-deep: #000d2e;
  --blue: #003d82;
  --sky: #0085c8;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--white);
  color: var(--slate-dark);
  overflow-x: hidden;
  line-height: 1.5;
}

/* ── TYPE ── */
h1, h2, h3, h4 {
  font-family: 'Playfair Display', serif;
  color: var(--navy);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

a { color: var(--blue); }

/* ══════════════════════════════════════════════
   NAV, Pfizer-style with mega menu
   ══════════════════════════════════════════════ */
.top-utility {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.7);
  font-size: 0.72rem;
  padding: 7px 5%;
  display: flex; justify-content: flex-end; gap: 24px;
  letter-spacing: 0.03em;
}
.top-utility a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color 0.2s;
}
.top-utility a:hover { color: white; }
.utility-divider { color: rgba(255,255,255,0.25); }

nav.main-nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5%;
  height: 76px;
  background: rgba(255,255,255,0.98);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  text-decoration: none;
}
.logo-mark {
  width: 40px; height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.logo-mark svg { width: 100%; height: 100%; display: block; }
.logo-wordmark {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.01em;
}
.logo-wordmark span { color: inherit; }

.nav-menu {
  display: flex; gap: 2px; list-style: none;
  height: 100%;
  align-items: stretch;
}
.nav-menu > li {
  display: flex; align-items: center;
  position: relative;
}
.nav-menu > li > a {
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--slate-dark);
  letter-spacing: 0.01em;
  padding: 0 18px;
  height: 100%;
  display: flex; align-items: center; gap: 6px;
  transition: color 0.2s;
  position: relative;
}
.nav-menu > li > a::after {
  content: ''; position: absolute; bottom: 0; left: 18px; right: 18px;
  height: 3px; background: var(--sky);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.25s ease;
}
.nav-menu > li:hover > a,
.nav-menu > li > a.active { color: var(--navy); }
.nav-menu > li:hover > a::after,
.nav-menu > li > a.active::after { transform: scaleX(1); }

.chev {
  width: 10px; height: 10px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 0.2s;
}
.nav-menu > li:hover .chev { transform: rotate(225deg) translateY(-2px); }

.mega {
  position: absolute;
  top: 100%; left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 640px;
  background: white;
  border: 1px solid var(--border);
  border-top: 3px solid var(--sky);
  border-radius: 0 0 12px 12px;
  box-shadow: var(--shadow-lg);
  padding: 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 28px 36px;
}
.nav-menu > li:hover .mega {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.mega-col-title {
  font-family: 'Playfair Display', serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-soft);
}
.mega a {
  display: block;
  padding: 9px 0;
  text-decoration: none;
  font-size: 0.88rem;
  color: var(--slate-dark);
  font-weight: 500;
  transition: color 0.15s, padding 0.15s;
}
.mega a:hover { color: var(--blue); padding-left: 6px; }
.mega-desc {
  display: block;
  font-size: 0.78rem;
  color: var(--light-slate);
  font-weight: 400;
  margin-top: 2px;
}
.mega-feature {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, var(--ice) 0%, var(--white) 100%);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 22px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  margin-top: 6px;
}
.mega-feature-text { font-size: 0.85rem; color: var(--slate-dark); }
.mega-feature-text strong { color: var(--navy); font-weight: 600; }
.mega-feature-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  white-space: nowrap;
}
.mega-feature-link::after { content: ' →'; }

.nav-cta {
  background: var(--blue);
  color: white !important;
  padding: 10px 22px;
  border-radius: 4px;
  font-weight: 600 !important;
  font-size: 0.85rem !important;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: background 0.2s, transform 0.15s;
  margin-left: 12px;
}
.nav-cta:hover { background: var(--navy); transform: translateY(-1px); }

/* ══════════════════════════════════════════════
   SHARED PAGE PRIMITIVES
   ══════════════════════════════════════════════ */
section { padding: 100px 5%; }
.container { max-width: 1240px; margin: 0 auto; }

.eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sky);
  margin-bottom: 14px;
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ''; display: block;
  width: 30px; height: 2px;
  background: var(--sky);
}

.section-title {
  font-size: clamp(1.9rem, 3vw, 2.7rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.15;
  margin-bottom: 18px;
  text-wrap: balance;
}
.section-lead {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--slate);
  font-weight: 300;
  max-width: 640px;
  text-wrap: pretty;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px;
  border-radius: 4px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s, border-color 0.2s;
  letter-spacing: 0.02em;
  font-family: inherit;
}
.btn-primary { background: var(--blue); color: white; border-color: var(--blue); }
.btn-primary:hover { background: var(--navy); border-color: var(--navy); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--blue); border-color: var(--blue); }
.btn-outline:hover { background: var(--blue); color: white; transform: translateY(-1px); }
.btn-white { background: white; color: var(--navy); border-color: white; }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.btn-ghost { background: transparent; color: white; border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover { border-color: white; background: rgba(255,255,255,0.08); }

/* Page header (inner pages) */
.page-header {
  position: relative;
  padding: 120px 5% 80px;
  background: linear-gradient(160deg, #eaf4fc 0%, #dbeaf7 50%, #f0f7fd 100%);
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,87,184,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,87,184,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.page-header::after {
  content: '';
  position: absolute;
  right: -120px; top: 50%;
  transform: translateY(-50%);
  width: 480px; height: 480px;
  border-radius: 50%;
  border: 1px solid rgba(0,155,222,0.18);
}
.page-header .container { position: relative; z-index: 2; }
.page-header .eyebrow { color: var(--blue); }
.page-header .eyebrow::before { background: var(--blue); }
.page-header h1 {
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 20px;
  max-width: 780px;
  text-wrap: balance;
}
.page-header .page-sub {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--slate);
  font-weight: 300;
  max-width: 680px;
  text-wrap: pretty;
}

/* Breadcrumb */
.crumb {
  font-size: 0.78rem;
  color: var(--light-slate);
  margin-bottom: 24px;
  display: flex; gap: 8px; align-items: center;
}
.crumb a { color: var(--blue); text-decoration: none; }
.crumb a:hover { text-decoration: underline; }
.crumb-sep { opacity: 0.4; }

/* ══════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════ */
footer.site-footer {
  background: var(--navy-deep);
  padding: 72px 5% 40px;
  color: rgba(255,255,255,0.55);
}
.footer-inner {
  max-width: 1240px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 32px;
}
.footer-brand .logo-wordmark { color: white; font-size: 1.5rem; margin-bottom: 18px; display: inline-block; }
.footer-brand p { font-size: 0.85rem; line-height: 1.7; font-weight: 300; max-width: 360px; }
.footer-col-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 20px;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  text-decoration: none;
  font-size: 0.86rem;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
}
.footer-links a:hover { color: white; }
.footer-addr {
  font-size: 0.86rem;
  font-weight: 300;
  color: rgba(255,255,255,0.6);
  line-height: 1.55;
}
.footer-bottom {
  max-width: 1240px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.78rem;
  flex-wrap: wrap; gap: 12px;
}
.footer-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.12);
  font-size: 0.74rem;
  font-weight: 500;
  margin-top: 22px;
}
.dot-live {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green);
  animation: pulse-live 2s infinite;
  box-shadow: 0 0 0 0 var(--green);
}
@keyframes pulse-live {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ══════════════════════════════════════════════
   SCROLL REVEAL
   ══════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ══════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .nav-menu { display: none; }
  .top-utility { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 40px; }
}
@media (max-width: 640px) {
  section { padding: 72px 5%; }
  .page-header { padding: 80px 5% 60px; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ══════════════════════════════════════════════
   TWEAKS PANEL
   ══════════════════════════════════════════════ */
#tweaks-panel {
  position: fixed;
  right: 20px; bottom: 20px;
  z-index: 999;
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  padding: 20px;
  width: 280px;
  display: none;
  font-family: 'DM Sans', sans-serif;
}
#tweaks-panel.open { display: block; }
#tweaks-panel h4 {
  font-family: 'DM Sans', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  display: flex; justify-content: space-between; align-items: center;
}
.tweak-group { margin-bottom: 18px; }
.tweak-group:last-child { margin-bottom: 0; }
.tweak-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--slate);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.tweak-options {
  display: flex; gap: 6px; flex-wrap: wrap;
}
.tweak-btn {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  background: white;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--slate);
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
  text-align: center;
  min-width: 0;
}
.tweak-btn:hover { border-color: var(--blue); color: var(--blue); }
.tweak-btn.active {
  background: var(--blue);
  color: white;
  border-color: var(--blue);
}