/* ==========================================================================
   RiverMed Inc. - Enterprise Healthcare Design System
   Brand Palette: Medical Navy, RiverMed Cyan, Trust Emerald, Pure White
   Typography: Plus Jakarta Sans / Inter
   ========================================================================== */

:root {
  /* Brand Primary - Deep Medical Navy */
  --color-navy-950: #050E1D;
  --color-navy-900: #0A192F;
  --color-navy-850: #0E223F;
  --color-navy-800: #132C52;
  --color-navy-700: #1E3F73;
  --color-navy-600: #2A5699;

  /* Brand Accent - RiverMed Cyan & Sapphire */
  --color-cyan-600: #0087A4;
  --color-cyan-500: #00A3C4;
  --color-cyan-400: #06B6D4;
  --color-cyan-300: #38BDF8;
  --color-cyan-100: #E0F2FE;
  --color-cyan-50:  #F0F9FF;

  /* Trust & Compliance - Clinical Emerald */
  --color-emerald-600: #059669;
  --color-emerald-500: #10B981;
  --color-emerald-400: #34D399;
  --color-emerald-50:  #ECFDF5;

  /* Neutrals & Surfaces */
  --color-bg-body: #F8FAFC;
  --color-bg-card: #FFFFFF;
  --color-bg-card-alt: #F1F5F9;
  --color-border-light: #E2E8F0;
  --color-border-hover: #CBD5E1;
  
  /* Text */
  --color-text-main: #0F172A;
  --color-text-body: #334155;
  --color-text-muted: #64748B;
  --color-text-light: #94A3B8;
  --color-text-white: #FFFFFF;

  /* Fonts */
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-card-hover: 0 18px 32px -4px rgba(0, 163, 196, 0.12), 0 8px 16px -4px rgba(10, 25, 47, 0.08);
  --shadow-glow: 0 0 25px rgba(0, 163, 196, 0.35);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1240px;
  --nav-height: 80px;
  --topbar-height: 38px;
}

/* ==========================================================================
   CSS Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-body);
  color: var(--color-text-body);
  line-height: 1.6;
  overflow-x: hidden;
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ==========================================================================
   Top Regulatory & Trust Banner
   ========================================================================== */
.top-bar {
  background-color: var(--color-navy-950);
  color: var(--color-text-light);
  font-size: 0.8125rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.top-bar-badges {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.top-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #E2E8F0;
  font-weight: 500;
}

.top-pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--color-emerald-400);
  box-shadow: 0 0 8px var(--color-emerald-400);
}

.top-bar-contacts {
  display: flex;
  align-items: center;
  gap: 20px;
}

.top-contact-link {
  color: #CBD5E1;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition-fast);
}

.top-contact-link:hover {
  color: var(--color-cyan-300);
}

/* ==========================================================================
   Header & Main Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: 0 4px 20px rgba(10, 25, 47, 0.04);
  transition: all var(--transition-base);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 8px 30px rgba(10, 25, 47, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
}

.brand-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-navy-900);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-name span {
  color: var(--color-cyan-500);
}

.brand-sub {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--color-text-muted);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-navy-800);
  padding: 8px 4px;
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--color-cyan-500), var(--color-cyan-400));
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-cyan-600);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.rfq-trigger-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: var(--color-cyan-50);
  color: var(--color-cyan-600);
  border: 1.5px solid rgba(0, 163, 196, 0.3);
  font-weight: 700;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.rfq-trigger-btn:hover {
  background: var(--color-cyan-500);
  color: #FFFFFF;
  border-color: var(--color-cyan-500);
  box-shadow: 0 4px 12px rgba(0, 163, 196, 0.25);
}

.rfq-badge {
  background: var(--color-cyan-600);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 800;
  min-width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  transition: background var(--transition-fast);
}

.rfq-trigger-btn:hover .rfq-badge {
  background: #FFFFFF;
  color: var(--color-cyan-600);
}

.mobile-toggle-btn {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-card-alt);
  color: var(--color-navy-900);
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

/* ==========================================================================
   Buttons & Core CTA Elements
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-base);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-cyan-500) 0%, var(--color-cyan-600) 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 163, 196, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-cyan-400) 0%, var(--color-cyan-500) 100%);
  box-shadow: 0 6px 20px rgba(0, 163, 196, 0.45);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-navy {
  background: var(--color-navy-900);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(10, 25, 47, 0.25);
}

.btn-navy:hover {
  background: var(--color-navy-800);
  box-shadow: 0 6px 20px rgba(10, 25, 47, 0.35);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-outline {
  background: transparent;
  color: var(--color-navy-800);
  border: 1.5px solid var(--color-border-hover);
}

.btn-outline:hover {
  border-color: var(--color-cyan-500);
  color: var(--color-cyan-600);
  background: var(--color-cyan-50);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: #FFFFFF;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #FFFFFF;
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1.0625rem;
  border-radius: var(--radius-md);
}

/* ==========================================================================
   Section Headers & Typography
   ========================================================================== */
.section {
  padding: 96px 0;
  position: relative;
}

.section-sm {
  padding: 60px 0;
}

.section-navy {
  background-color: var(--color-navy-900);
  color: #FFFFFF;
}

.section-slate {
  background-color: #F1F5F9;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-cyan-600);
  background: var(--color-cyan-50);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  border: 1px solid rgba(0, 163, 196, 0.2);
}

.section-tag.light {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-cyan-300);
  border-color: rgba(255, 255, 255, 0.15);
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.22;
  color: var(--color-navy-950);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.section-navy .section-title {
  color: #FFFFFF;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.section-navy .section-desc {
  color: #CBD5E1;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-cyan-600), var(--color-cyan-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-emerald {
  color: var(--color-emerald-500);
}

/* ==========================================================================
   Trust Strip / Credential Ticker
   ========================================================================== */
.trust-strip {
  background: #FFFFFF;
  border-bottom: 1px solid var(--color-border-light);
  padding: 24px 0;
  box-shadow: var(--shadow-sm);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 12px;
}

.trust-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--color-cyan-50);
  color: var(--color-cyan-600);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
  border: 1px solid rgba(0, 163, 196, 0.15);
}

.trust-item-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-navy-900);
  line-height: 1.25;
}

.trust-item-sub {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--color-navy-950);
  color: #CBD5E1;
  padding-top: 80px;
  padding-bottom: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand-bio {
  max-width: 360px;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: #94A3B8;
  margin: 18px 0 24px 0;
}

.footer-creds-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-cred-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #E2E8F0;
}

.footer-heading {
  font-size: 1.0625rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 22px;
  letter-spacing: -0.01em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.9375rem;
  color: #94A3B8;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover {
  color: var(--color-cyan-300);
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.9375rem;
  color: #94A3B8;
}

.footer-contact-icon {
  font-size: 1.1rem;
  color: var(--color-cyan-400);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.875rem;
  color: #64748B;
}

.footer-bottom a {
  color: #94A3B8;
}

.footer-bottom a:hover {
  color: var(--color-cyan-300);
}

.footer-legal-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Helper Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-24 { margin-bottom: 24px; }
.w-100 { width: 100%; }