/* ==========================================================================
   ClearPercept — Design Tokens
   ========================================================================== */
:root {
  --navy-900: #0a1a30;
  --navy-800: #0f2340;
  --navy-700: #16314f;
  --teal-600: #0f9d8c;
  --teal-500: #14b8a6;
  --teal-100: #e3f6f2;
  --blue-600: #2f5fa8;
  --gray-50: #f7f9fb;
  --gray-100: #eef2f6;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-600: #55606d;
  --gray-700: #3c4550;
  --ink: #101826;
  --white: #ffffff;

  --max-width: 1200px;
  --gutter: 24px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-serif: Georgia, "Iowan Old Style", "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --transition-fast: 180ms ease;
  --transition-med: 400ms ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
  color: var(--navy-900);
}

p { margin: 0; }

ul { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; cursor: pointer; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

section { position: relative; }

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 0;
  top: -60px;
  background: var(--navy-900);
  color: var(--white);
  padding: 12px 20px;
  z-index: 1000;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:focus-visible { outline: 2px solid var(--teal-600); outline-offset: 2px; }

.btn-primary {
  background: var(--teal-600);
  color: var(--white);
}
.btn-primary:hover { background: var(--teal-500); }

.btn-secondary {
  background: transparent;
  color: var(--navy-900);
  border-color: var(--gray-300);
}
.btn-secondary:hover { border-color: var(--navy-900); }

.btn-ghost-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
}
.btn-ghost-light:hover { border-color: rgba(255,255,255,0.7); }

.btn-block { width: 100%; }

/* ==========================================================================
   Navbar
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  background: rgba(255, 255, 255, 0.0);
  border-bottom: 1px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.navbar.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom-color: var(--gray-200);
  box-shadow: 0 1px 0 rgba(10, 26, 48, 0.02);
}
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--navy-900);
}
.brand__mark { width: 30px; height: 30px; flex-shrink: 0; }
.brand__name { letter-spacing: 0.2px; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 15px;
  font-weight: 500;
  color: var(--gray-700);
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}
.nav-links a:hover { color: var(--navy-900); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--teal-600);
  transition: right var(--transition-fast);
}
.nav-links a:hover::after { right: 0; }

.navbar__actions { display: flex; align-items: center; gap: 20px; }

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 8px;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy-900);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before, .nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle__bars::before { top: -7px; }
.nav-toggle__bars::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   Sections — shared header pattern
   ========================================================================== */
.section-header {
  max-width: 720px;
  margin-bottom: 48px;
}
.section-header--center { margin-left: auto; margin-right: auto; text-align: center; }

.eyebrow {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--teal-600);
  margin-bottom: 14px;
}
.eyebrow--light { color: var(--teal-500); }

.section-header h2 {
  font-size: clamp(28px, 3.4vw, 38px);
  letter-spacing: -0.2px;
}
.section-header p {
  margin-top: 18px;
  font-size: 17px;
  color: var(--gray-600);
}

.section-pad { padding: 100px 0; }
.section-pad--tight { padding: 80px 0; }

.bg-gray { background: var(--gray-50); }
.bg-navy { background: var(--navy-900); color: var(--white); }
.bg-teal-tint { background: var(--teal-100); }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding: 168px 0 96px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafb 100%);
  border-bottom: 1px solid var(--gray-200);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 64px;
  align-items: center;
}
.hero__eyebrow {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--teal-600);
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(32px, 4.4vw, 52px);
  letter-spacing: -0.5px;
  color: var(--navy-900);
}
.hero__lead {
  margin-top: 24px;
  font-size: 19px;
  color: var(--gray-700);
  max-width: 540px;
}
.hero__actions {
  margin-top: 36px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero__statement {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--gray-200);
  font-size: 16px;
  font-style: italic;
  color: var(--gray-600);
  max-width: 540px;
}

/* Hero concept diagram */
.flow-diagram {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: 0 20px 50px -30px rgba(10, 26, 48, 0.25);
}
.flow-diagram__steps {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
}
.flow-step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  background: var(--gray-50);
}
.flow-step__icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-size: 16px;
  flex-shrink: 0;
}
.flow-step--accent .flow-step__icon { background: var(--teal-600); }
.flow-step__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--gray-600);
}
.flow-step__title {
  font-size: 15px;
  font-weight: 600;
  color: var(--navy-900);
  margin-top: 2px;
}
.flow-connector {
  display: flex;
  justify-content: center;
  padding: 6px 0;
  color: var(--gray-300);
}
.flow-connector svg { width: 16px; height: 20px; }

.flow-diagram__tags {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.flow-tag {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--navy-800);
  background: var(--teal-100);
  border: 1px solid rgba(15, 157, 140, 0.25);
  border-radius: 999px;
  padding: 6px 14px;
}

/* ==========================================================================
   Challenge journey (Section 2)
   ========================================================================== */
.journey {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: stretch;
  gap: 8px;
  margin-top: 8px;
}
.journey__node {
  border: 1px solid var(--gray-200);
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  text-align: center;
}
.journey__node--mid { background: var(--navy-900); border-color: var(--navy-900); }
.journey__node--mid .journey__label,
.journey__node--mid .journey__title { color: var(--white); }
.journey__label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--teal-600);
}
.journey__title {
  margin-top: 10px;
  font-size: 16px;
  font-weight: 600;
  color: var(--navy-900);
}
.journey__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-300);
}
.journey__arrow svg { width: 26px; height: 18px; }

.journey-note {
  margin-top: 36px;
  font-size: 17px;
  color: var(--gray-700);
  max-width: 680px;
  border-left: 3px solid var(--teal-600);
  padding-left: 20px;
}

/* ==========================================================================
   Question cards (Section 3)
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.question-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  background: var(--white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.question-card:hover {
  border-color: var(--teal-600);
  box-shadow: 0 16px 34px -26px rgba(10, 26, 48, 0.35);
  transform: translateY(-2px);
}
.question-card__index {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 700;
  color: var(--teal-600);
  letter-spacing: 1px;
}
.question-card__title {
  margin-top: 14px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: 0.2px;
}
.question-card__text {
  margin-top: 10px;
  font-size: 15px;
  color: var(--gray-600);
}

/* ==========================================================================
   Process cards (Section 4) + loop
   ========================================================================== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.process-card {
  background: var(--navy-900);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  color: var(--white);
  min-height: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.process-card:nth-child(2) { background: var(--navy-800); }
.process-card:nth-child(3) { background: var(--teal-600); }
.process-card__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.4px;
}
.process-card__text {
  margin-top: 12px;
  font-size: 15px;
  color: rgba(255,255,255,0.85);
}

.loop {
  margin-top: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 24px;
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius-md);
}
.loop__item {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--navy-900);
  padding: 10px 18px;
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 999px;
}
.loop__arrow { color: var(--gray-300); font-size: 16px; }

/* ==========================================================================
   Recommendation example (Section 5)
   ========================================================================== */
.recommendation-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: var(--white);
  overflow: hidden;
  box-shadow: 0 24px 60px -40px rgba(10, 26, 48, 0.3);
}
.recommendation-card__tag {
  background: var(--navy-900);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 10px 26px;
}
.recommendation-card__body {
  padding: 34px 32px 38px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.recommendation-block__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--teal-600);
  margin-bottom: 8px;
}
.recommendation-block__text {
  font-size: 15.5px;
  color: var(--gray-700);
}

/* ==========================================================================
   Audience blocks (Section 6)
   ========================================================================== */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.audience-block {
  padding: 28px 22px;
  border-top: 3px solid var(--teal-600);
  background: var(--gray-50);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}
.audience-block__title {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: var(--navy-900);
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 1px;
}
.audience-block__text {
  margin-top: 12px;
  font-size: 15px;
  color: var(--gray-600);
}

/* ==========================================================================
   Why now (Section 7 — dark)
   ========================================================================== */
.statement-section {
  padding: 130px 0;
  text-align: center;
}
.statement-section__lead {
  font-size: clamp(26px, 3.6vw, 42px);
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--white);
  max-width: 780px;
  margin: 0 auto;
  letter-spacing: -0.3px;
}
.statement-section__copy {
  margin: 26px auto 0;
  max-width: 620px;
  font-size: 17px;
  color: rgba(255,255,255,0.72);
}
.statement-section__divider {
  width: 60px;
  height: 2px;
  background: var(--teal-500);
  margin: 48px auto;
}
.statement-section__big {
  font-size: clamp(24px, 3.2vw, 34px);
  font-family: var(--font-serif);
  color: var(--white);
  max-width: 760px;
  margin: 0 auto;
}

/* ==========================================================================
   Vision (Section 8)
   ========================================================================== */
.vision {
  padding: 140px 0;
  text-align: center;
}
.vision__label {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--teal-600);
}
.vision__statement {
  margin: 22px auto 0;
  max-width: 880px;
  font-size: clamp(30px, 5vw, 52px);
  letter-spacing: -0.6px;
  color: var(--navy-900);
}
.vision__sub {
  margin-top: 24px;
  font-size: 18px;
  color: var(--gray-600);
}

/* ==========================================================================
   About (in-page)
   ========================================================================== */
.about__content {
  max-width: 760px;
}
.about__content p + p { margin-top: 18px; }
.about__content p {
  font-size: 17px;
  color: var(--gray-700);
}

/* ==========================================================================
   Contact / CTA (Section 9)
   ========================================================================== */
.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: start;
}
.contact__intro h2 { font-size: clamp(26px, 3.2vw, 36px); }
.contact__intro p {
  margin-top: 18px;
  font-size: 17px;
  color: var(--gray-700);
  max-width: 420px;
}
.contact__meta {
  margin-top: 32px;
  font-size: 14.5px;
  color: var(--gray-600);
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: 0 24px 60px -44px rgba(10, 26, 48, 0.35);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-field { margin-bottom: 18px; }
.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--navy-900);
  margin-bottom: 7px;
}
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--ink);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--teal-600);
  background: var(--white);
}
.form-field textarea { resize: vertical; min-height: 110px; }

.form-note {
  margin-top: 14px;
  font-size: 13px;
  color: var(--gray-600);
}
.form-success {
  display: none;
  padding: 22px;
  border-radius: var(--radius-md);
  background: var(--teal-100);
  color: var(--navy-900);
  font-size: 15px;
  font-weight: 600;
}
.form-success.is-visible { display: block; }
.contact-form.is-submitted form { display: none; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--navy-900);
  color: rgba(255,255,255,0.7);
  padding: 56px 0 32px;
}
.footer__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer .brand { color: var(--white); }
.footer__tagline {
  margin-top: 10px;
  font-size: 14.5px;
  color: rgba(255,255,255,0.55);
  max-width: 320px;
}
.footer__links {
  display: flex;
  gap: 28px;
}
.footer__links a {
  font-size: 14.5px;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition-fast);
}
.footer__links a:hover { color: var(--white); }
.footer__bottom {
  margin-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* ==========================================================================
   Reveal-on-scroll
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms ease, transform 700ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ==========================================================================
   Mobile navigation panel
   ========================================================================== */
.mobile-nav {
  position: fixed;
  inset: 76px 0 0 0;
  background: var(--white);
  z-index: 850;
  padding: 32px var(--gutter) 40px;
  transform: translateY(-12px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  overflow-y: auto;
}
.mobile-nav.is-open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.mobile-nav ul { display: flex; flex-direction: column; gap: 4px; }
.mobile-nav a {
  display: block;
  padding: 16px 4px;
  font-size: 18px;
  font-weight: 600;
  color: var(--navy-900);
  border-bottom: 1px solid var(--gray-100);
}
.mobile-nav .btn { margin-top: 24px; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .contact { grid-template-columns: 1fr; }
  .hero__grid { grid-template-columns: 1fr; }
  .hero { padding-top: 140px; }
  .recommendation-card__body { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .navbar__actions .btn { display: none; }
}

@media (max-width: 640px) {
  .section-pad { padding: 72px 0; }
  .section-pad--tight { padding: 56px 0; }
  .card-grid { grid-template-columns: 1fr; }
  .audience-grid { grid-template-columns: 1fr; }
  .journey { grid-template-columns: 1fr; }
  .journey__arrow { transform: rotate(90deg); padding: 4px 0; }
  .form-row { grid-template-columns: 1fr; }
  .statement-section, .vision { padding: 90px 0; }
  .contact-form { padding: 26px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
}