/* Boston Healthtech Brief — styles.css */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&family=Lora:wght@500;600;700&display=swap');

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

:root {
  --bg: #FBF9F4;
  --white: #FFFFFF;
  --black: #12263A;
  --dark: #12263A;
  --gray: #5A6B7B;
  --light-gray: #F4EEE7;
  --border: #E4DFD4;
  --accent: #C1443A;
  --accent-dark: #A5372E;
  --accent-light: #F6E7E4;
  --coral: #E8785F;
  --blue: #4467C6;
  --nav-height: 72px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ===== NAV ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  padding: 0 5%;
}

.nav-inner {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo img {
  height: 38px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--dark);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--accent-dark); }
.nav-links a.active { color: var(--accent-dark); }

.nav-cta {
  background: var(--accent) !important;
  color: #FFFFFF !important;
  padding: 0.5rem 1.2rem !important;
  border-radius: 5px !important;
  font-weight: 600 !important;
  transition: background 0.2s !important;
}

.nav-cta:hover { background: var(--accent-dark) !important; color: #FFFFFF !important; }
.nav-cta.active { background: var(--accent-dark) !important; color: #FFFFFF !important; }

/* ===== HERO ===== */
.hero {
  padding: 7rem 5% 6rem;
  background: var(--bg);
}

.hero .container {
  max-width: 1160px;
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-family: 'Lora', Georgia, serif;
  font-size: clamp(2.4rem, 5vw, 4.25rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--black);
  max-width: 800px;
  margin-bottom: 1.75rem;
}

.hero h1 em {
  font-style: normal;
  box-shadow: inset 0 -0.35em 0 var(--accent);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 540px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.btn-row {
  display: flex;
  gap: 0.875rem;
  flex-wrap: wrap;
  align-items: center;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.01em;
  border-radius: 5px;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #FFFFFF;
}
.btn-primary:hover { background: var(--accent-dark); }

.btn-secondary {
  background: transparent;
  color: var(--dark);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: var(--dark); background: var(--dark); color: var(--white); }

/* ===== DIVIDER ===== */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ===== SECTION ===== */
section {
  padding: 5.5rem 5%;
}

.container {
  max-width: 1160px;
  margin: 0 auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-dark);
  margin-bottom: 1rem;
}

.section-title {
  font-family: 'Lora', Georgia, serif;
  font-size: clamp(1.75rem, 3vw, 2.75rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--black);
  margin-bottom: 1.25rem;
}

.section-sub {
  font-size: 1rem;
  color: var(--gray);
  max-width: 580px;
  line-height: 1.75;
  margin-bottom: 3.5rem;
}

/* ===== SECTION BACKGROUNDS ===== */
.section-white { background: var(--white); }
.section-light { background: var(--white); }
.section-cream { background: var(--light-gray); }

/* ===== GRIDS ===== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

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

/* ===== CARDS ===== */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: box-shadow 0.2s;
}

.card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.06); }

.card-accent { border-top: 3px solid var(--accent); }

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.625rem;
  color: var(--black);
}

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

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===== CTA SECTION ===== */
.cta-section {
  background: var(--black);
  color: var(--white);
  text-align: center;
  padding: 7rem 5%;
}

.cta-section .section-eyebrow { color: var(--accent); }

.cta-section .section-title {
  color: var(--white);
  max-width: 620px;
  margin: 0 auto 1.25rem;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

.cta-section > .container > p {
  color: #999;
  max-width: 480px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
  font-size: 1rem;
}

/* ===== SUBSCRIBE ===== */
.subscribe-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem 2.5rem;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.subscribe-box h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 0.6rem;
}

.subscribe-box p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 1.75rem;
}

.subscribe-placeholder {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 2rem 1.5rem;
  background: var(--bg);
}

.subscribe-placeholder .fake-form {
  display: flex;
  gap: 0.6rem;
  max-width: 420px;
  margin: 0 auto 0.9rem;
}

.subscribe-placeholder input {
  flex: 1;
  font-family: inherit;
  font-size: 0.875rem;
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: 5px;
  background: var(--white);
  color: var(--dark);
}

.subscribe-placeholder small {
  color: var(--gray);
  font-size: 0.72rem;
}

/* ===== FOOTER ===== */
footer {
  background: #12263A;
  color: #9FB0C0;
  padding: 4rem 5% 2.5rem;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo img {
  height: 30px;
  display: block;
  margin-bottom: 0.875rem;
}

.footer-tagline {
  font-size: 0.85rem;
  color: #8DA0B0;
  max-width: 260px;
  line-height: 1.65;
}

.footer-powered {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  font-size: 0.78rem;
  color: #8DA0B0;
}

.footer-powered img {
  height: 20px;
  filter: brightness(0) invert(1);
  opacity: 0.75;
}

.footer-links {
  display: flex;
  gap: 4rem;
}

.footer-col h4 {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #BAC7D3;
  margin-bottom: 1.25rem;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-col a {
  text-decoration: none;
  color: #8DA0B0;
  font-size: 0.875rem;
  transition: color 0.2s;
}

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

.footer-bottom {
  max-width: 1160px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid #29405A;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: #6F8395;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ===== GUIDE ARTICLES ===== */
.article {
  max-width: 720px;
  margin: 0 auto;
}

.article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--black);
  letter-spacing: -0.01em;
  margin: 3rem 0 1rem;
}

.article h2:first-child { margin-top: 0; }

.article h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--black);
  margin: 2rem 0 0.75rem;
}

.article p {
  font-size: 0.95rem;
  color: #3d4351;
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

.article a { color: var(--accent-dark); font-weight: 600; text-decoration: none; }
.article a:hover { text-decoration: underline; }

.article ul, .article ol {
  margin: 0 0 1.25rem 1.4rem;
}

.article li {
  font-size: 0.95rem;
  color: #3d4351;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

.article .callout {
  background: var(--accent-light);
  border-left: 3px solid var(--accent);
  border-radius: 0 8px 8px 0;
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  font-size: 0.9rem;
  color: var(--dark);
  line-height: 1.75;
}

.article .disclaimer {
  background: var(--light-gray);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-top: 2.5rem;
  font-size: 0.78rem;
  color: var(--gray);
  line-height: 1.65;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--gray);
  margin-bottom: 2.5rem;
}

/* ===== MOBILE NAV ===== */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--dark);
  cursor: pointer;
  padding: 0.25rem 0.4rem;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 960px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  nav { padding: 0 1.25rem; }
  .hero { padding: 4rem 1.25rem 3rem; }
  section { padding: 4rem 1.25rem; }
  footer { padding: 3rem 1.25rem 2rem; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 2rem; }
  .footer-links { flex-direction: column; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-section { padding: 5rem 1.25rem; }

  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.07);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
  }
  nav.nav-open .nav-links { display: flex; }
  .nav-links > li { width: 100%; }
  .nav-links > li > a { display: block; padding: 0.8rem 0; font-size: 1rem; }
  .nav-links > li > a.nav-cta { display: inline-block; padding: 0.6rem 1.4rem !important; margin-top: 0.5rem; }
}

/* ===== SUBSCRIBE MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(18, 38, 58, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}
.modal-overlay.is-open { opacity: 1; visibility: visible; }
.modal-card {
  background: var(--white);
  border-radius: 14px;
  border-top: 4px solid var(--accent);
  max-width: 460px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem 2.25rem 2.25rem;
  position: relative;
  box-shadow: 0 30px 80px rgba(18, 38, 58, 0.35);
  transform: translateY(12px);
  transition: transform 0.25s ease;
}
.modal-overlay.is-open .modal-card { transform: translateY(0); }
.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--gray);
  cursor: pointer;
  padding: 0.25rem 0.4rem;
}
.modal-close:hover { color: var(--black); }
.modal-card .section-eyebrow { margin-bottom: 0.6rem; }
.modal-card h3 {
  font-family: 'Lora', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}
.modal-card > p {
  font-size: 0.9rem;
  color: var(--gray);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

/* ===== HUBSPOT FORM THEME ===== */
.hb-form form { font-family: 'Poppins', sans-serif; }
.hb-form fieldset { max-width: none !important; }
.hb-form .hs-form-field { margin-bottom: 1rem; }
.hb-form .hs-form-field > label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.35rem;
}
.hb-form .hs-form-field > label .hs-form-required { color: var(--accent); margin-left: 2px; }
.hb-form .hs-input {
  width: 100% !important;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  padding: 0.7rem 0.9rem;
  border: 1.5px solid var(--border);
  border-radius: 5px;
  background: var(--white);
  color: var(--dark);
}
.hb-form .hs-input:focus { outline: none; border-color: var(--accent); }
.hb-form textarea.hs-input { min-height: 90px; }
.hb-form .inputs-list { list-style: none; margin: 0; padding: 0; }
.hb-form .hs-button,
.hb-form input[type="submit"] {
  -webkit-appearance: none;
  appearance: none;
  background: var(--accent);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  border-radius: 5px;
  padding: 0.8rem 1.75rem;
  cursor: pointer;
  transition: background 0.2s;
  width: 100%;
  margin-top: 0.4rem;
}
.hb-form .hs-button:hover,
.hb-form input[type="submit"]:hover { background: var(--accent-dark); }
.hb-form .hs-error-msgs { list-style: none; margin: 0.3rem 0 0; padding: 0; }
.hb-form .hs-error-msgs label { color: #C0392B; font-size: 0.75rem; font-weight: 500; }
.hb-form .legal-consent-container,
.hb-form .hs-form-booleancheckbox-display {
  font-size: 0.75rem;
  color: var(--gray);
  line-height: 1.5;
}
.hb-form .legal-consent-container a { color: var(--accent-dark); }
.hb-form .submitted-message {
  font-size: 0.95rem;
  color: var(--dark);
  line-height: 1.6;
}