@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:ital,wght@0,300;0,400;0,500;1,300;1,400&display=swap');

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

:root {
  --cream: #F8F6F1;
  --off-white: #FDFCFA;
  --charcoal: #1C1C1A;
  --mid: #6B6B68;
  --light-border: #E2DED6;
  --accent: #0A7388;
  --accent-light: #E6F4F6;
  --font-display: 'Nunito Sans', sans-serif;
  --font-body: 'Nunito Sans', sans-serif;
}

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

body {
  background: var(--off-white);
  color: var(--charcoal);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(253, 252, 250, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--light-border);
  padding: 0 3rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav-links a {
  color: var(--mid);
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--charcoal);
}

/* MAIN CONTENT OFFSET */
main {
  padding-top: 64px;
}

/* HERO */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 5rem 2rem 0;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-text {
  width: 100%;
  padding: 0 1rem 2.5rem;
}

.hero-eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  font-weight: 400;
}

.hero-text h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 300;
  line-height: 1.15;
  color: var(--charcoal);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-text p {
  color: var(--mid);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 2rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  text-decoration: none;
}

.btn-primary:hover {
  background: #075f72;
  transform: translateY(-1px);
}

.hero-image-panel {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  overflow: hidden;
}

.hero-devices-img {
  width: 100%;
  height: auto;
  display: block;
}

/* SECTION COMMON */
section {
  padding: 6rem 3rem;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  font-weight: 400;
}

/* ABOUT STRIP */
.about-strip {
  background: var(--cream);
  border-top: 1px solid var(--light-border);
  border-bottom: 1px solid var(--light-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.about-grid h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

.about-grid p {
  color: var(--mid);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.about-right {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stat-block {
  padding: 1.5rem;
  background: var(--off-white);
  border: 1px solid var(--light-border);
}

.stat-block .number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 300;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

.stat-block .label {
  font-size: 0.82rem;
  color: var(--mid);
  letter-spacing: 0.04em;
}

/* CTA BAND */
.cta-band {
  background: var(--accent);
  padding: 5rem 3rem;
  text-align: center;
}

.cta-band h2 {
  font-family: var(--font-display);
  color: #fff;
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 300;
  margin-bottom: 0.75rem;
  letter-spacing: -0.01em;
}

.cta-band p {
  color: rgba(255,255,255,0.7);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.btn-outline-white {
  display: inline-block;
  border: 1px solid rgba(255,255,255,0.6);
  color: #fff;
  padding: 0.75rem 2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background 0.2s, border-color 0.2s;
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
}

/* FOOTER */
footer {
  background: var(--charcoal);
  color: rgba(255,255,255,0.5);
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
}

footer a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s;
}

footer a:hover {
  color: rgba(255,255,255,0.9);
}

/* CONTACT PAGE */
.contact-hero {
  padding: 7rem 3rem 4rem;
  max-width: 700px;
  margin: 0 auto;
}

.contact-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.contact-hero p {
  color: var(--mid);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 5rem;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 3rem 6rem;
}

.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 0.5rem;
}

.contact-info p,
.contact-info a {
  font-size: 0.88rem;
  color: var(--mid);
  line-height: 1.7;
}

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

.contact-divider {
  width: 32px;
  height: 1px;
  background: var(--light-border);
  margin: 2rem 0;
}

/* FORM */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mid);
  font-weight: 400;
}

.field input,
.field textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 300;
  color: var(--charcoal);
  background: var(--cream);
  border: 1px solid var(--light-border);
  padding: 0.75rem 1rem;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}

.field input:focus,
.field textarea:focus {
  border-color: var(--accent);
}

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

.form-note {
  font-size: 0.8rem;
  color: var(--mid);
}

.form-note a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.form-success {
  display: none;
  background: var(--accent-light);
  border: 1px solid #c5d5ea;
  padding: 1.5rem;
  font-size: 0.9rem;
  color: var(--accent);
}

/* SECTION HEADINGS */
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
  color: var(--charcoal);
}

.section-intro {
  color: var(--mid);
  font-size: 1rem;
  max-width: 640px;
  margin-bottom: 3.5rem;
}

/* HOW IT WORKS */
.how-it-works {
  background: var(--off-white);
}

.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
}

.step {
  flex: 1;
  padding: 2rem 2rem 2rem 0;
}

.step-connector {
  padding-top: 3.5rem;
  flex-shrink: 0;
}

.step-number {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 1.25rem;
}

.step-icon-placeholder {
  width: 56px;
  height: 56px;
  border: 1.5px dashed var(--light-border);
  margin-bottom: 1.25rem;
}

.step h3 {
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
  color: var(--charcoal);
}

.step p {
  font-size: 0.9rem;
  color: var(--mid);
  line-height: 1.7;
}

/* WHAT WE MANAGE */
.managed-section {
  background: var(--cream);
  border-top: 1px solid var(--light-border);
  border-bottom: 1px solid var(--light-border);
}

.managed-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.managed-card {
  background: var(--off-white);
  border: 1px solid var(--light-border);
  padding: 1.75rem 1.5rem;
}

.managed-icon-placeholder {
  width: 40px;
  height: 40px;
  border: 1.5px dashed var(--light-border);
  margin-bottom: 1.25rem;
}

.managed-card h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
  color: var(--charcoal);
}

.managed-card p {
  font-size: 0.87rem;
  color: var(--mid);
  line-height: 1.7;
}

/* PLATFORM SECTION */
.platform-section {
  background: var(--off-white);
}

.platform-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.platform-text p {
  color: var(--mid);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.platform-values {
  list-style: none;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.platform-values li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.value-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: 0.45rem;
}

.platform-values strong {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.2rem;
  color: var(--charcoal);
}

.platform-values p {
  font-size: 0.87rem;
  color: var(--mid);
  margin: 0;
}

.platform-screens {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: sticky;
  top: 5rem;
}

.screen-placeholder {
  background: var(--cream);
  border: 1.5px dashed var(--light-border);
  aspect-ratio: 16 / 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.screen-placeholder p {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--mid);
  margin-bottom: 0.4rem;
}

.screen-placeholder span {
  font-size: 0.75rem;
  color: #bbb;
  font-family: monospace;
}

.screen-placeholder--secondary {
  opacity: 0.6;
}

/* WHO IT'S FOR */
.audience-section {
  background: var(--cream);
  border-top: 1px solid var(--light-border);
  border-bottom: 1px solid var(--light-border);
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.audience-item {
  padding: 1.75rem;
  background: var(--off-white);
  border: 1px solid var(--light-border);
  border-top: 3px solid var(--accent);
}

.audience-item h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.6rem;
  color: var(--charcoal);
}

.audience-item p {
  font-size: 0.87rem;
  color: var(--mid);
  line-height: 1.7;
}

.audience-note {
  font-size: 0.88rem;
  color: var(--mid);
  padding-top: 1.5rem;
  border-top: 1px solid var(--light-border);
}

.audience-note a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* DATING LAB PARTNERSHIP */
.partner-section {
  background: var(--off-white);
}

.partner-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 5rem;
  align-items: center;
}

.partner-graphic-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  border: 1.5px dashed var(--light-border);
  background: var(--cream);
}

.partner-text p {
  color: var(--mid);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.partner-link {
  display: inline-block;
  margin-top: 0.75rem;
  color: var(--accent);
  font-size: 0.88rem;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s;
}

.partner-link:hover {
  color: #075f72;
}

/* ANIMATIONS */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
  animation: fadeUp 0.7s ease both;
}

.fade-up-1 { animation-delay: 0.1s; }
.fade-up-2 { animation-delay: 0.25s; }
.fade-up-3 { animation-delay: 0.4s; }
.fade-up-4 { animation-delay: 0.55s; }

/* RESPONSIVE */
@media (max-width: 860px) {
  nav { padding: 0 1.5rem; }

  .hero { padding-top: 3rem; }
  .hero-text { padding: 0 0 2rem; }
  .hero-text h1 { font-size: clamp(2rem, 8vw, 3rem); }
  .hero-image-panel { border-radius: 0; border-left: none; border-right: none; }

  section { padding: 4rem 1.5rem; }

  .steps { flex-direction: column; gap: 0; }
  .step { padding: 1.5rem 0; border-bottom: 1px solid var(--light-border); }
  .step:last-child { border-bottom: none; }
  .step-connector { display: none; }

  .managed-grid { grid-template-columns: 1fr 1fr; }

  .platform-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .platform-screens { position: static; }

  .audience-grid { grid-template-columns: 1fr; gap: 1rem; }

  .partner-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .partner-graphic-placeholder { max-width: 280px; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }

  .contact-layout { grid-template-columns: 1fr; gap: 3rem; padding: 0 1.5rem 4rem; }
  .contact-hero { padding: 5rem 1.5rem 2rem; }
  .form-row { grid-template-columns: 1fr; }

  footer { flex-direction: column; gap: 1rem; text-align: center; }
}