/*
  MedVoiceAI Landing Page — style.css
  Brand: Deep Navy #0B1F3A · Teal #00C2A8 · Off-White #F4F7FB
  Font: DM Sans 400/500/600/700/800
*/

/* ── Variables ───────────────────────────────────────────────────── */
:root {
  --navy:        #0B1F3A;
  --navy-mid:    #122847;
  --navy-light:  #1A3560;
  --teal:        #00C2A8;
  --teal-dim:    #00A08B;
  --white:       #FFFFFF;
  --off-white:   #F4F7FB;
  --slate:       #8FA3BC;
  --slate-light: #C4D2E2;

  --max-w:       1100px;
  --px:          24px;
  --section-py:  88px;
  --radius:      12px;
  --border:      1px solid var(--slate-light);
}

/* ── Reset ───────────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--off-white);
  color: var(--navy);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg {
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
}
ul, ol {
  list-style: none;
}

/* ── Container ───────────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--px);
}

/* ── Section backgrounds ─────────────────────────────────────────── */
.section-light { background: var(--off-white); }
.section-white { background: var(--white); }

/* ── Section padding ─────────────────────────────────────────────── */
.steps-section,
.features-section,
.trust-section,
.about-section {
  padding: var(--section-py) 0;
}

/* ── Section title ───────────────────────────────────────────────── */
.section-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.4px;
  line-height: 1.2;
  margin-bottom: 40px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--teal);
  display: inline-block;
}

/* ── CTA button ──────────────────────────────────────────────────── */
.btn-cta {
  display: inline-block;
  background: var(--teal);
  color: var(--navy);
  font-family: 'DM Sans', sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.1px;
  padding: 13px 30px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background-color 0.15s ease;
}
.btn-cta:hover {
  background: var(--teal-dim);
}
.btn-cta:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

/* ── Header ──────────────────────────────────────────────────────── */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--slate-light);
  padding: 16px 0;
}

/* ── Logo lockup ─────────────────────────────────────────────────── */
.logo-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.logo-lockup--sm {
  gap: 10px;
}
.logo-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.4px;
  color: var(--navy);
  line-height: 1.1;
}
.logo-name span {
  color: var(--teal);
}
.logo-name--light {
  color: var(--white);
  font-size: 17px;
}
.logo-sub {
  font-size: 10.5px;
  font-weight: 400;
  color: var(--slate);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}
.logo-sub--light {
  font-size: 9px;
  color: var(--slate);
}

/* ── Hero ────────────────────────────────────────────────────────── */
.hero {
  background: var(--navy);
  padding: 96px 0 80px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 56px;
  align-items: center;
}
.hero-text h1 {
  font-size: 48px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 20px;
  max-width: 560px;
}
.hero-sub {
  font-size: 18px;
  font-weight: 400;
  color: var(--slate-light);
  line-height: 1.65;
  margin-bottom: 36px;
  max-width: 500px;
}

/* ── Riley visual ────────────────────────────────────────────────── */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.riley-rings {
  position: relative;
  width: 220px;
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(0, 194, 168, 0.2);
}
.ring-sm  { width: 130px; height: 130px; }
.ring-md  { width: 170px; height: 170px; border-color: rgba(0, 194, 168, 0.12); }
.ring-lg  { width: 210px; height: 210px; border-color: rgba(0, 194, 168, 0.07); }
.riley-icon {
  position: relative;
  z-index: 1;
}
.riley-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}
.riley-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.2px;
}
.riley-status {
  font-size: 11px;
  font-weight: 600;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Steps — how it works ────────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.step-card {
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.step-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: -1.5px;
  line-height: 1;
}
.step-card p {
  font-size: 15px;
  font-weight: 500;
  color: var(--navy);
  line-height: 1.5;
}

/* ── Features — what it does ─────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--off-white);
  border: var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.feature-icon-wrap {
  width: 44px;
  height: 44px;
  background: rgba(0, 194, 168, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.feature-card h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.1px;
  line-height: 1.3;
}
.feature-card p {
  font-size: 14px;
  font-weight: 400;
  color: var(--slate);
  line-height: 1.6;
}

/* ── Trust ───────────────────────────────────────────────────────── */
.trust-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 740px;
}
.trust-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  font-weight: 400;
  color: var(--navy);
  line-height: 1.65;
}
.check-icon {
  flex-shrink: 0;
  margin-top: 4px;
}
.trust-list strong {
  font-weight: 700;
}

/* ── About ───────────────────────────────────────────────────────── */
.about-inner {
  max-width: 680px;
}
.about-body {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.about-body p {
  font-size: 16px;
  font-weight: 400;
  color: var(--navy);
  line-height: 1.7;
}
.about-body strong {
  font-weight: 700;
}

/* ── CTA band ────────────────────────────────────────────────────── */
.cta-band {
  background: var(--navy-mid);
  padding: 80px 0;
}
.cta-band-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  text-align: center;
}
.cta-band-text {
  font-size: 30px;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.5px;
}

/* ── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  background: var(--navy);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-parent {
  font-size: 13px;
  color: var(--slate);
  font-weight: 400;
}
.footer-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}
.footer-email {
  font-size: 14px;
  font-weight: 500;
  color: var(--slate-light);
  transition: color 0.15s ease;
}
.footer-email:hover {
  color: var(--teal);
}
.footer-copy {
  font-size: 12px;
  color: var(--slate);
}

/* ── Responsive — tablet ─────────────────────────────────────────── */
@media (max-width: 920px) {
  :root {
    --section-py: 64px;
  }
  .hero {
    padding: 72px 0 60px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .hero-visual {
    display: none;
  }
  .hero-text h1 {
    font-size: 38px;
    max-width: 100%;
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .section-title {
    font-size: 24px;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-info {
    align-items: flex-start;
  }
}

/* ── Responsive — mobile ─────────────────────────────────────────── */
@media (max-width: 600px) {
  :root {
    --section-py: 52px;
    --px: 20px;
  }
  .hero {
    padding: 56px 0 48px;
  }
  .hero-text h1 {
    font-size: 30px;
    letter-spacing: -0.5px;
  }
  .hero-sub {
    font-size: 16px;
    margin-bottom: 28px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .section-title {
    font-size: 22px;
    margin-bottom: 28px;
  }
  .cta-band {
    padding: 60px 0;
  }
  .cta-band-text {
    font-size: 22px;
  }
  .about-inner {
    max-width: 100%;
  }
  .trust-list {
    max-width: 100%;
  }
}