/* ==========================================================================
   Blue Focus — Marketing Site
   ========================================================================== */

/* Design tokens */
:root {
  /* Brand colors */
  --navy: #002F87;        /* Current site primary */
  --navy-deep: #001E57;   /* Deeper navy for accents */
  --navy-soft: #2e3f79;   /* Brand guide Pantone 287 */
  --light-blue: #7DB2E1;  /* Brand guide Pantone 2915 */
  --light-blue-tint: #F7FAFF;
  --light-blue-tint-2: #E8EDF6;

  /* Neutrals */
  --white: #ffffff;
  --ink: #0c1330;
  --ink-soft: #3a4565;
  --rule: rgba(0,47,135,0.12);

  /* Typography */
  --font-sans: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  --font-display: "Helvetica Neue", "Helvetica", "Arial", sans-serif;

  /* Layout */
  --container: 1180px;
  --container-narrow: 760px;
  --radius-sm: 4px;
  --radius-md: 8px;

  /* Motion */
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--navy);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  z-index: 9999;
  text-decoration: none;
  border-radius: var(--radius-md);
}
.skip-link:focus { top: 1rem; }

/* Layout */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.container-narrow { max-width: var(--container-narrow); }

/* Typography */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0;
}
h1 {
  font-size: clamp(2.4rem, 5.5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
h1 em {
  font-style: italic;
  color: var(--light-blue);
  font-weight: 800;
}
h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.75rem);
  font-weight: 700;
}
h3 {
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  font-weight: 700;
}
p { margin: 0 0 1rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--navy);
  margin: 0 0 1rem;
  padding-left: 2.25rem;
  position: relative;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.75rem;
  height: 2px;
  background: var(--navy);
  transform: translateY(-50%);
}
.eyebrow-light { color: var(--light-blue); }
.eyebrow-light::before { background: var(--light-blue); }

.heading-light { color: var(--white); }

.lede {
  font-size: 1.2rem;
  line-height: 1.55;
  color: var(--ink);
  font-weight: 400;
}
.section-lede {
  font-size: 1.1rem;
  max-width: 56ch;
  margin: 1rem 0 3rem;
  color: var(--ink-soft);
}
.section-lede-light { color: rgba(255,255,255,0.85); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 180ms var(--ease-out), background-color 180ms var(--ease-out), color 180ms var(--ease-out), border-color 180ms var(--ease-out);
  cursor: pointer;
}
.btn-primary {
  background: var(--light-blue);
  color: var(--navy-deep);
  border-color: var(--light-blue);
}
.btn-primary:hover {
  background: var(--white);
  border-color: var(--white);
  transform: translateY(-1px);
}
.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0, 30, 87, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.logo img { height: 36px; width: auto; }
.primary-nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}
.primary-nav a {
  color: var(--white);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  position: relative;
  padding: 0.25rem 0;
  transition: color 180ms var(--ease-out);
}
.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--light-blue);
  transition: width 220ms var(--ease-out);
}
.primary-nav a:hover { color: var(--light-blue); }
.primary-nav a:hover::after { width: 100%; }

.header-cta {
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 40px;
  height: 40px;
  padding: 0;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 200ms var(--ease-out), opacity 200ms var(--ease-out);
}

.mobile-nav {
  display: none;
  background: var(--navy-deep);
  padding: 0 1.5rem 1.5rem;
}
.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.mobile-nav a {
  display: block;
  color: var(--white);
  text-decoration: none;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 1rem;
}
.mobile-nav a.mobile-cta {
  border-bottom: 0;
  margin-top: 0.5rem;
  background: var(--light-blue);
  color: var(--navy-deep);
  text-align: center;
  border-radius: 999px;
  font-weight: 700;
}

/* Hero */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex;
  align-items: center;
  color: var(--white);
  overflow: hidden;
  padding: 6rem 0 5rem;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url("assets/images/water-splash-hero.webp");
  background-size: cover;
  background-position: center;
  background-color: var(--navy-deep);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,30,87,0.7) 0%, rgba(0,30,87,0.85) 60%, rgba(0,30,87,0.95) 100%);
}
.hero-inner { position: relative; z-index: 2; max-width: 900px; }
.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--light-blue);
  margin: 0 0 1.5rem;
  padding-left: 2.25rem;
  position: relative;
  display: inline-block;
}
.hero-eyebrow::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 1.75rem;
  height: 2px;
  background: var(--light-blue);
  transform: translateY(-50%);
}
.hero h1 { color: var(--white); margin-bottom: 1.5rem; max-width: 22ch; }
.hero-lede {
  font-size: 1.25rem;
  line-height: 1.5;
  color: rgba(255,255,255,0.9);
  margin: 0 0 2.5rem;
  max-width: 60ch;
}

/* Sections */
.section {
  padding: 6rem 0;
}

/* About */
.section-about {
  background: var(--white);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3rem;
  align-items: start;
  margin-top: 1rem;
}
.about-grid p { margin-bottom: 0; }

/* How We Partner */
.section-partner {
  position: relative;
  color: var(--white);
  overflow: hidden;
}
.partner-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--navy-deep) 0%, var(--navy) 100%);
}
.partner-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("assets/images/striped-bg.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.18;
  mix-blend-mode: screen;
}
.section-partner > .container { position: relative; z-index: 2; }

.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.partner-card {
  position: relative;
  perspective: 1200px;
  height: 280px;
}
.partner-card-front,
.partner-card-back {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: transform 500ms var(--ease-out);
  display: flex;
  flex-direction: column;
}
.partner-card-front {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1.25rem;
}
.partner-card-back {
  background: var(--light-blue);
  color: var(--navy-deep);
  transform: rotateY(180deg);
  justify-content: center;
}
.partner-card:hover .partner-card-front,
.partner-card:focus-within .partner-card-front {
  transform: rotateY(-180deg);
}
.partner-card:hover .partner-card-back,
.partner-card:focus-within .partner-card-back {
  transform: rotateY(0);
}
.partner-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.partner-icon img { width: 100%; height: 100%; }
.partner-card-front h3 { color: var(--white); }
.partner-card-back h3 {
  color: var(--navy-deep);
  margin-bottom: 0.75rem;
}
.partner-card-back p {
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
}
.partner-hint {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin: 2rem 0 0;
  letter-spacing: 0.05em;
}

/* Solutions */
.section-solutions {
  background: var(--light-blue-tint);
}
.solutions-list {
  display: flex;
  flex-direction: column;
  gap: 4rem;
}
.solution {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 3rem;
  align-items: start;
  padding: 2.5rem;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--rule);
  transition: transform 220ms var(--ease-out), box-shadow 220ms var(--ease-out);
}
.solution:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px -20px rgba(0,30,87,0.25);
}
.solution-reverse { grid-template-columns: 1fr 240px; }
.solution-reverse .solution-logo { order: 2; }
.solution-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  background: var(--navy);
  border-radius: var(--radius-md);
  min-height: 160px;
}
.solution-logo img { max-width: 200px; height: auto; }
.solution-body h3 {
  color: var(--navy);
  margin-bottom: 0.75rem;
  font-size: 1.5rem;
}
.solution-body p {
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--navy);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}
.link-arrow span {
  transition: transform 200ms var(--ease-out);
  display: inline-block;
}
.link-arrow:hover span { transform: translateX(4px); }
.link-arrow-light { color: var(--light-blue); }

/* Collaborations */
.section-collaborations {
  position: relative;
  background: var(--navy-deep);
  color: var(--white);
  overflow: hidden;
}
.section-collaborations::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("assets/images/louisville.webp");
  background-size: cover;
  background-position: center;
  opacity: 0.22;
}
.section-collaborations::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,30,87,0.6) 0%, rgba(0,30,87,0.92) 100%);
}
.section-collaborations > .container { position: relative; z-index: 2; }

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 1rem;
}
.case {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: background 200ms var(--ease-out), border-color 200ms var(--ease-out);
}
.case:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(125,178,225,0.4);
}
.case-eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--light-blue);
  margin: 0 0 0.85rem;
}
.case h3 {
  color: var(--white);
  margin-bottom: 0.85rem;
  font-size: 1.3rem;
}
.case p {
  color: rgba(255,255,255,0.78);
  font-size: 0.98rem;
  line-height: 1.55;
  margin-bottom: 1rem;
}
.case p:last-of-type { margin-bottom: 0; }

/* Contact */
.section-contact {
  background: var(--white);
}
.contact-form {
  margin-top: 2.5rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.form-field {
  margin-bottom: 1.5rem;
}
.form-row .form-field { margin-bottom: 0; }
.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: 0.5rem;
}
.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--ink);
  background: var(--light-blue-tint);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  transition: border-color 180ms var(--ease-out), background 180ms var(--ease-out);
}
.form-field input:focus,
.form-field textarea:focus {
  outline: 0;
  border-color: var(--light-blue);
  background: var(--white);
}
.form-field textarea { resize: vertical; min-height: 140px; }
.contact-form button[type="submit"] { margin-top: 1rem; }

/* Honeypot — hide from users */
.hp-field {
  position: absolute;
  left: -9999px;
  top: -9999px;
  visibility: hidden;
}

/* Footer */
.site-footer {
  background: var(--navy-deep);
  color: rgba(255,255,255,0.7);
  padding: 3rem 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.footer-logo img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}
.footer-meta {
  margin: 0;
  font-size: 0.9rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .solution,
  .solution-reverse {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding: 2rem 1.5rem;
  }
  .solution-reverse .solution-logo { order: 0; }
  .solution-logo { min-height: 120px; }
}

@media (max-width: 720px) {
  .section { padding: 4rem 0; }
  .hero { min-height: 70vh; padding: 4rem 0; }

  .primary-nav,
  .header-cta { display: none; }
  .nav-toggle { display: flex; }

  .mobile-nav.is-open { display: block; }
  .nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.is-open span:nth-child(2) { opacity: 0; }
  .nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .form-row { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: 1fr; }
  .partner-card { height: 240px; }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}