/* ===================================================
   Employer Savings Hub
   Design system: Stripe-inspired (adapted for finance)
   Font: DM Sans (geometric, clean — closest free match
   to sohne-var's light-weight authority)
   =================================================== */

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

:root {
  /* Stripe palette, green CTA adapted for savings */
  --heading: #061b31;
  --label: #273951;
  --body: #64748d;
  --muted: #94a3b8;
  --white: #ffffff;
  --surface: #f8fafc;
  --border: #e5edf5;
  --border-strong: #d1dae6;

  /* Brand green (money / savings) */
  --accent: #0d6e3f;
  --accent-hover: #0a5832;
  --accent-surface: #ecfdf3;

  /* Dark sections */
  --dark-bg: #0a1628;
  --dark-surface: rgba(255,255,255,0.06);
  --dark-border: rgba(255,255,255,0.1);
  --dark-text: rgba(255,255,255,0.72);
  --dark-heading: #ffffff;

  /* Stripe shadows — blue-tinted */
  --shadow-ambient: rgba(23,23,23,0.06) 0px 3px 6px;
  --shadow-standard: rgba(50,50,93,0.25) 0px 30px 45px -30px, rgba(0,0,0,0.1) 0px 18px 36px -18px;
  --shadow-deep: rgba(3,3,39,0.25) 0px 14px 21px -14px, rgba(0,0,0,0.1) 0px 8px 17px -8px;

  /* Radius — conservative, 4-6px */
  --radius: 4px;
  --radius-md: 6px;

  --red: #dc3545;
}

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

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  font-weight: 300;
  line-height: 1.55;
  color: var(--body);
  background: var(--white);
}

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

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography — Light weight as signature --- */
h1, h2, h3 {
  color: var(--heading);
  font-weight: 300;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  letter-spacing: -1.2px;
}

h2 {
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  letter-spacing: -0.64px;
  margin-bottom: 40px;
}

h3 {
  font-size: 1.125rem;
  letter-spacing: -0.22px;
  margin-bottom: 6px;
}

p { margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }
strong { font-weight: 500; color: var(--heading); }
.muted { color: var(--muted); font-style: italic; }

/* --- Eyebrow --- */
.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.eyebrow-light { color: rgba(255,255,255,0.5); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 400;
  font-size: 15px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s ease, box-shadow 0.15s ease;
  padding: 10px 20px;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--heading);
  border: 1px solid var(--border-strong);
}

.btn-ghost:hover {
  background: var(--surface);
  border-color: var(--label);
}

.btn-header {
  background: var(--accent);
  color: var(--white);
  font-size: 14px;
  padding: 7px 16px;
}

.btn-header:hover { background: var(--accent-hover); }

.btn-full { width: 100%; padding: 12px 20px; }

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 56px;
  gap: 32px;
}

.header-nav {
  display: flex;
  gap: 24px;
  margin-left: auto;
}

.header-nav a {
  font-size: 14px;
  font-weight: 400;
  color: var(--label);
  transition: color 0.15s;
}

.header-nav a:hover { color: var(--heading); }

.header-inner .btn-header { margin-left: 16px; }

.logo {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--heading);
  letter-spacing: -0.4px;
}

.logo span { color: var(--accent); }

/* --- Hero --- */
.hero {
  padding: 120px 0 0;
  background: var(--white);
}

.hero-content {
  max-width: 680px;
  padding-bottom: 72px;
}

.hero h1 {
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--body);
  max-width: 560px;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 12px;
}

/* Trust Bar */
.trust-bar {
  border-top: 1px solid var(--border);
  padding: 14px 0;
}

.trust-bar .container {
  display: flex;
  align-items: center;
  gap: 20px;
}

.trust-label {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.trust-names {
  display: flex;
  gap: 24px;
}

.trust-names span {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--label);
}

/* --- Sections --- */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--surface);
}

/* --- Split layout (Problem) --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.split-left h2 {
  margin-bottom: 0;
  text-align: left;
}

.split-right p {
  font-size: 1rem;
  line-height: 1.7;
}

/* --- Steps --- */
.steps {
  list-style: none;
  max-width: 720px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 24px;
  align-items: baseline;
  padding: 28px 0;
  border-bottom: 1px solid var(--border);
}

.step:first-child { border-top: 1px solid var(--border); }

.step-num {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
  flex-shrink: 0;
  width: 28px;
  letter-spacing: -0.02em;
}

.step-body h3 {
  color: var(--heading);
}

.step-body p {
  color: var(--body);
  font-size: 0.9375rem;
  line-height: 1.65;
}

/* --- Testimonials --- */
.testimonials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.testimonial-featured {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 40px 36px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.testimonial-featured p {
  font-size: 1.25rem;
  font-weight: 300;
  line-height: 1.6;
  color: var(--heading);
  letter-spacing: -0.2px;
  margin-bottom: 24px;
}

.testimonial-featured footer {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.testimonial-featured cite {
  font-style: normal;
  font-size: 0.875rem;
  color: var(--body);
}

.testimonial-pair {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.testimonial-sm {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  flex: 1;
}

.testimonial-sm p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--label);
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-sm cite {
  font-style: normal;
  font-size: 0.8125rem;
  color: var(--body);
}

blockquote { border: none; margin: 0; }

/* --- Compliance (Dark section) --- */
.section-dark {
  background: var(--dark-bg);
  padding: 80px 0;
}

.section-dark h2 {
  color: var(--dark-heading);
  margin-bottom: 48px;
}

.compliance-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--dark-border);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 40px;
}

.compliance-item {
  background: var(--dark-bg);
  padding: 32px 28px;
}

.compliance-item h3 {
  color: var(--dark-heading);
  font-weight: 400;
  margin-bottom: 8px;
}

.compliance-item p {
  font-size: 0.875rem;
  color: var(--dark-text);
  line-height: 1.6;
}

.guarantee {
  text-align: center;
  font-size: 0.875rem;
  color: var(--dark-text);
  padding: 14px 24px;
  border: 1px dashed var(--dark-border);
  border-radius: var(--radius);
  max-width: 480px;
  margin: 0 auto;
}

.guarantee strong {
  color: var(--dark-heading);
  font-weight: 500;
}

/* --- Lead Form --- */
.section-form {
  padding: 80px 0;
  background: var(--white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.form-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.form-intro h2 {
  text-align: left;
}

.form-intro p {
  font-size: 1rem;
  color: var(--body);
  line-height: 1.65;
}

.form-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  box-shadow: var(--shadow-standard);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  margin-bottom: 14px;
}

.form-group label {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--label);
  margin-bottom: 5px;
}

.form-group input,
.form-group select {
  font-family: inherit;
  font-size: 15px;
  font-weight: 300;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--heading);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(13,110,63,0.1);
}

.form-group input.invalid,
.form-group select.invalid {
  border-color: var(--red);
  box-shadow: 0 0 0 2px rgba(220,53,69,0.1);
}

.form-fine {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 12px;
}

/* --- FAQ --- */
.faq-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 56px;
  align-items: start;
}

.faq-header h2 {
  text-align: left;
  margin-bottom: 0;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-item:first-child {
  border-top: 1px solid var(--border);
}

.faq-item summary {
  padding: 18px 0;
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--heading);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.15s ease;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.125rem;
  font-weight: 300;
  color: var(--muted);
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] summary::after { content: '\2212'; }

.faq-item summary:hover { color: var(--accent); }

.faq-answer {
  padding: 0 0 18px;
}

.faq-answer p {
  font-size: 0.875rem;
  color: var(--body);
  line-height: 1.7;
}

/* --- Footer --- */
.site-footer {
  background: var(--dark-bg);
  padding: 40px 0 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--dark-border);
  margin-bottom: 16px;
}

.logo-footer {
  color: var(--dark-heading);
  font-size: 0.9375rem;
}

.footer-left p {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.35);
  margin-top: 4px;
}

.footer-right {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-contact a {
  font-size: 0.8125rem;
  color: var(--dark-text);
  transition: color 0.15s;
}

.footer-contact a:hover { color: var(--dark-heading); }

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-links a {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.4);
  transition: color 0.15s;
}

.footer-links a:hover { color: var(--dark-text); }

.footer-copy {
  font-size: 0.6875rem;
  color: rgba(255,255,255,0.25);
}

/* ===================================================
   Responsive
   =================================================== */
@media (max-width: 768px) {
  .section { padding: 56px 0; }

  .header-nav { display: none; }

  .hero { padding: 100px 0 0; }
  .hero-content { padding-bottom: 48px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }

  .trust-bar .container { flex-direction: column; gap: 6px; }
  .trust-names { flex-wrap: wrap; gap: 12px; justify-content: center; }

  .split { grid-template-columns: 1fr; gap: 24px; }

  .testimonials { grid-template-columns: 1fr; }
  .testimonial-featured p { font-size: 1.0625rem; }

  .compliance-row { grid-template-columns: 1fr; }

  .form-layout { grid-template-columns: 1fr; gap: 32px; }
  .form-card { padding: 24px 20px; }
  .form-row { grid-template-columns: 1fr; gap: 0; }

  .faq-container { grid-template-columns: 1fr; gap: 24px; }

  .section-dark { padding: 56px 0; }

  .footer-inner { flex-direction: column; gap: 20px; }
  .footer-right { flex-direction: column; gap: 16px; }
}

@media (max-width: 480px) {
  h1 { font-size: 1.875rem; letter-spacing: -0.8px; }
  .header-inner { height: 48px; }
  .hero { padding: 80px 0 0; }
}