/* BuildWithAICo — Site B Light Theme */
:root {
  --accent: #0891B2;
  --accent-dark: #0e7490;
  --accent-light: #cffafe;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --surface-white: #ffffff;
  --surface-mist: #f8fafc;
  --surface-cloud: #f1f5f9;
  --surface-accent: #ecfeff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.1);
  --radius-card: 16px;
  --radius-pill: 999px;
  --font-body: 'Manrope', system-ui, sans-serif;
  --font-display: 'Fraunces', Georgia, serif;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--surface-white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover { color: var(--accent-dark); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-secondary); }

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.surface-white { background: var(--surface-white); }
.surface-mist { background: var(--surface-mist); }
.surface-cloud { background: var(--surface-cloud); }
.surface-accent { background: var(--surface-accent); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-white);
  border-bottom: 1px solid var(--border);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo:hover { color: var(--text-primary); }

.logo svg { width: 36px; height: 36px; flex-shrink: 0; }

.logo-wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Desktop horizontal nav */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-desktop a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}

.nav-desktop a:hover,
.nav-desktop a.active {
  color: var(--accent);
  background: var(--surface-accent);
}

.nav-desktop a.active { font-weight: 600; }

/* Mobile toggle — hidden on desktop */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
}

.nav-toggle svg { width: 28px; height: 28px; }

/* Static fallback nav (no-JS) */
.nav-fallback {
  display: none;
  background: var(--surface-mist);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

.no-js .nav-fallback { display: block; }
.no-js .nav-toggle { display: none; }
.no-js .nav-desktop { display: none; }

.nav-fallback ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  justify-content: center;
}

.nav-fallback a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 0.35rem 0.75rem;
}

/* Fullscreen mobile overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(255, 255, 255, 0.97);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.96);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s;
}

.mobile-overlay.is-open {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.mobile-overlay nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.mobile-overlay a {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.mobile-overlay a:hover { color: var(--accent); }

.mobile-overlay-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
}

.mobile-overlay-close svg { width: 32px; height: 32px; }

@media (max-width: 900px) {
  .nav-desktop { display: none; }
  .nav-toggle { display: block; }
}

/* Hero Pattern L */
.hero-editorial {
  padding: 3rem 0 4rem;
  background: var(--surface-mist);
}

.hero-grid {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy .serial {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--surface-accent);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.25rem;
}

.hero-copy h1 { margin-bottom: 1rem; }

.hero-copy .lead {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
  max-width: 34ch;
}

.hero-cards {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--surface-white);
}

.hero-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
}

.hero-card:nth-child(2) { margin-left: 1.5rem; }
.hero-card:nth-child(3) { margin-left: 3rem; }

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-card:nth-child(2),
  .hero-card:nth-child(3) { margin-left: 0; }
  .hero-card img { height: 200px; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(8, 145, 178, 0.35);
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(8, 145, 178, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: var(--surface-accent);
  color: var(--accent-dark);
}

/* Sections */
.section {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section-header p {
  font-size: 1.05rem;
}

/* Cards */
.card {
  background: var(--surface-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.card-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card-body {
  padding: 1.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

/* Counter strip */
.counter-strip {
  padding: 3rem 0;
  background: var(--surface-accent);
  border-block: 1px solid rgba(8, 145, 178, 0.15);
}

.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.counter-item .number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.counter-item .label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

@media (max-width: 768px) {
  .counter-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Lab panels */
.lab-panels {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lab-panel {
  background: var(--surface-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.lab-panel-header {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface-mist);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  transition: background var(--transition);
}

.lab-panel-header:hover { background: var(--surface-cloud); }

.lab-panel-header .icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
  transition: transform var(--transition);
}

.lab-panel.is-open .lab-panel-header .icon { transform: rotate(45deg); }

.lab-panel-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.lab-panel.is-open .lab-panel-body { max-height: 600px; }

.no-js .lab-panel .lab-panel-body {
  max-height: none;
}

.lab-panel-content {
  padding: 1.25rem 1.5rem 1.5rem;
}

/* FAQ accordion */
.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--surface-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--surface-mist);
  border: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
}

.faq-question .faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.is-open .faq-answer { max-height: 800px; }

.no-js .faq-item .faq-answer { max-height: none; }

.faq-answer-inner {
  padding: 1rem 1.5rem 1.5rem 4rem;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.no-js .reveal {
  opacity: 1;
  transform: none;
}

/* CTA band */
.cta-band {
  padding: 4rem 0;
  background: linear-gradient(135deg, var(--surface-accent) 0%, var(--surface-mist) 100%);
  text-align: center;
}

.cta-band h2 { margin-bottom: 0.75rem; }

.cta-band p {
  max-width: 520px;
  margin: 0 auto 1.75rem;
}

/* Page hero */
.page-hero {
  padding: 3rem 0;
  background: var(--surface-mist);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 { margin-bottom: 0.75rem; }

.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.breadcrumb a { color: var(--text-muted); }

/* Program tiers */
.tier-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--surface-accent);
  padding: 0.3rem 0.7rem;
  border-radius: 6px;
  margin-bottom: 0.75rem;
}

.price-tag {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: 0.5rem;
}

/* Contact form */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--surface-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.15);
}

.form-group textarea { min-height: 140px; resize: vertical; }

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.form-check input { margin-top: 0.25rem; flex-shrink: 0; }

.form-check label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info-block {
  background: var(--surface-mist);
  border-radius: var(--radius-card);
  padding: 2rem;
  border: 1px solid var(--border);
}

.contact-info-block h3 { margin-bottom: 1rem; }

.contact-detail {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.alert-success {
  background: #ecfdf5;
  border: 1px solid #6ee7b7;
  color: #065f46;
  padding: 1rem 1.25rem;
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

/* Legal prose */
.legal-content {
  max-width: 780px;
  margin: 0 auto;
}

.legal-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  font-size: 1.35rem;
}

.legal-content h3 {
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

.legal-content ul, .legal-content ol {
  margin: 0 0 1rem 1.5rem;
  color: var(--text-secondary);
}

.legal-content li { margin-bottom: 0.5rem; }

.legal-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

/* Footer */
.site-footer {
  background: var(--surface-cloud);
  border-top: 1px solid var(--border);
}

.newsletter-strip {
  background: var(--accent-dark);
  color: #fff;
  padding: 2.5rem 0;
}

.newsletter-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.newsletter-inner h3 {
  color: #fff;
  font-size: 1.25rem;
  margin: 0;
}

.newsletter-form {
  display: flex;
  gap: 0.75rem;
  flex: 1;
  max-width: 420px;
}

.newsletter-form input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
}

.newsletter-form button {
  padding: 0.75rem 1.5rem;
  background: var(--text-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-pill);
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.footer-columns {
  padding: 3.5rem 0 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
}

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.footer-col h4 {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col li { margin-bottom: 0.5rem; }

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-col a:hover { color: var(--accent); }

.contact-ribbon {
  background: var(--surface-white);
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
}

.contact-ribbon-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.5rem;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-ribbon a { color: var(--accent); }

.footer-bottom {
  padding: 1.5rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 1rem;
  padding: 1rem;
  background: var(--surface-mist);
  border-radius: 10px;
  border: 1px solid var(--border);
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-inner { flex-direction: column; text-align: center; }
  .newsletter-form { width: 100%; max-width: none; flex-direction: column; }
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: var(--surface-white);
  border-top: 1px solid var(--border);
  box-shadow: 0 -8px 30px rgba(15, 23, 42, 0.1);
  padding: 1.5rem;
  transform: translateY(100%);
  transition: transform 0.4s ease;
}

.cookie-banner.is-visible { transform: translateY(0); }

.cookie-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem;
}

.cookie-text {
  flex: 1;
  min-width: 260px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.cookie-actions .btn {
  padding: 0.65rem 1.25rem;
  font-size: 0.85rem;
}

.btn-cookie-reject {
  background: var(--surface-cloud);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-cookie-customise {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.cookie-preferences {
  width: 100%;
  display: none;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

.cookie-preferences.is-visible { display: block; }

.cookie-pref-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0;
  font-size: 0.9rem;
}

/* 404 */
.error-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem 0;
}

.error-code {
  font-family: var(--font-display);
  font-size: 6rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

/* Legal hub */
.legal-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

/* Ecosystem image */
.ecosystem-visual {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-top: 2rem;
}

.ecosystem-visual img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

/* Two-col layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.team-portrait {
  max-width: 280px;
  margin-inline: auto;
}

.team-portrait img {
  width: 100%;
  height: auto;
}

@media (max-width: 768px) {
  .two-col { grid-template-columns: 1fr; }
}

/* Service list */
.service-list {
  list-style: none;
  display: grid;
  gap: 1rem;
}

.service-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--surface-mist);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.service-list .check {
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}