/* ============================================
   BREATHWELL — design tokens
   Palette: sky blue, mint accent, soft white
   Type: Be Vietnam Pro (display) / Noto Sans (body) / Space Mono (data)
   ============================================ */

:root{
  --blue: #4A90D9;
  --blue-deep: #2F6EB0;
  --mint: #6FCF97;
  --bg: #F5F9FC;
  --bg-warm: #EAF1F8;
  --ink: #1D2733;
  --ink-soft: #566270;
  --line: #DCE7F0;
  --white: #FFFFFF;

  --font-display: "Be Vietnam Pro", sans-serif;
  --font-body: "Noto Sans", sans-serif;
  --font-mono: "Space Mono", monospace;

  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;

  --shadow-card: 0 14px 32px -16px rgba(29, 39, 51, 0.25);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{ margin:0; font-family: var(--font-body); color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; }
img,svg{ display:block; max-width:100%; }
a{ color: inherit; text-decoration: none; }
ul,ol{ list-style: none; margin:0; padding:0; }
.wrap{ width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 32px; }

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

.eyebrow{ font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--blue-deep); margin: 0 0 14px; }
.eyebrow.center{ text-align:center; }
.section-title{ font-family: var(--font-display); font-weight: 700; font-size: clamp(1.9rem, 3vw, 2.5rem); line-height: 1.2; margin: 0 0 20px; color: var(--ink); }
.section-title.center{ text-align:center; max-width: 660px; margin-left:auto; margin-right:auto; }

.btn{ display:inline-flex; align-items:center; justify-content:center; gap:8px; padding: 14px 28px; border-radius: 10px; font-weight: 600; font-size: 0.94rem; font-family: var(--font-display); border: 1.5px solid transparent; cursor:pointer; transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease; white-space: nowrap; }
.btn:hover{ transform: translateY(-2px); }
.btn:focus-visible{ outline: 3px solid var(--mint); outline-offset: 2px; }
.btn-primary{ background: var(--blue); color: var(--white); box-shadow: var(--shadow-card); }
.btn-primary:hover{ background: var(--blue-deep); }
.btn-ghost{ background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover{ background: var(--ink); color: var(--white); }
.btn-light{ background: var(--white); color: var(--blue-deep); }
.btn-light:hover{ background: var(--bg-warm); }
.btn-sm{ padding: 10px 18px; font-size: 0.85rem; width:100%; }

.site-header{ position: sticky; top:0; z-index: 50; background: rgba(245,249,252,0.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.header-inner{ display:flex; align-items:center; justify-content: space-between; padding: 16px 0; gap: 24px; }
.brand{ display:flex; align-items:center; gap:10px; font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: var(--ink); }
.mark-ring{ fill:none; stroke: var(--blue); stroke-width: 2; }
.mark-drop{ fill: var(--mint); }
.main-nav{ display:flex; gap: 30px; font-weight: 600; font-size: 0.92rem; flex: 1; justify-content: center; }
.main-nav a{ color: var(--ink-soft); transition: color .15s; }
.main-nav a:hover{ color: var(--ink); }
.nav-cta{ flex-shrink:0; }
.nav-toggle{ display:none; }

.hero{ padding: 76px 0 56px; overflow:hidden; }
.hero-inner{ display:grid; grid-template-columns: 1.1fr 0.9fr; align-items:center; gap: 48px; }
.hero h1{ font-family: var(--font-display); font-weight: 700; font-size: clamp(2rem, 3.6vw, 2.8rem); line-height: 1.25; margin: 0 0 22px; color: var(--ink); }
.hero-sub{ font-size: 1.03rem; line-height: 1.65; color: var(--ink-soft); max-width: 500px; margin: 0 0 32px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom: 40px; }
.hero-trust{ display:flex; gap: 32px; }
.hero-trust strong{ display:block; font-family: var(--font-display); font-size: 1.3rem; color: var(--blue-deep); }
.hero-trust span{ font-size: 0.74rem; color: var(--ink-soft); font-family: var(--font-mono); }

.hero-art{ position:relative; }
.hero-ring{ fill: var(--bg-warm); }
.mist{ fill:none; stroke: var(--mint); stroke-width: 3; stroke-linecap:round; opacity:0.7; }
.device-body{ fill: var(--white); stroke: var(--blue-deep); stroke-width: 2.5; }
.device-window{ fill: var(--bg-warm); stroke: var(--blue); stroke-width: 1.5; }
.device-mouthpiece{ fill: var(--blue); }

.features{ padding: 88px 0; background: var(--white); }
.feature-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
.feature-card{ background: var(--bg); border-radius: var(--radius-lg); padding: 30px 26px; border: 1px solid var(--line); }
.feature-icon{ display:inline-flex; align-items:center; justify-content:center; width: 48px; height:48px; border-radius: 50%; background: var(--bg-warm); margin-bottom: 16px; }
.feature-icon svg circle{ fill:none; stroke: var(--blue); stroke-width:2.5; }
.feature-card h3{ font-family: var(--font-display); font-size: 1.05rem; margin: 0 0 10px; color: var(--ink); }
.feature-card p{ color: var(--ink-soft); line-height: 1.6; margin:0; font-size:0.92rem; }

.how{ padding: 88px 0; }
.how-steps{ display:grid; grid-template-columns: repeat(3,1fr); gap: 28px; margin-top: 48px; }
.how-step{ background: var(--white); border-radius: var(--radius-lg); padding: 30px 26px; border: 1px solid var(--line); }
.how-step-num{ display:inline-flex; align-items:center; justify-content:center; width: 36px; height:36px; border-radius:50%; background: var(--blue); color: var(--white); font-family: var(--font-display); font-weight:700; margin-bottom: 16px; }
.how-step h4{ font-family: var(--font-display); font-size: 1.1rem; margin: 0 0 10px; color: var(--ink); }
.how-step p{ margin:0; color: var(--ink-soft); line-height:1.55; font-size:0.92rem; }

.honest{ padding: 40px 0 88px; }
.honest-inner{ max-width: 820px; }
.honest-card{ background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px 34px; box-shadow: var(--shadow-card); }
.honest-card p{ margin:0; color: var(--ink-soft); line-height:1.7; font-size: 0.98rem; }

.specs{ padding: 88px 0; background: var(--ink); color: var(--bg); }
.specs-inner{ display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:center; }
.specs .eyebrow{ color: var(--mint); }
.specs .section-title{ color: var(--white); }
.specs-lead{ color: rgba(245,249,252,0.75); line-height:1.6; }
.specs-card{ background: var(--white); color: var(--ink); border-radius: var(--radius-md); padding: 12px 24px; font-family: var(--font-mono); }
.specs-row{ display:flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px dashed var(--line); font-size:0.86rem; gap: 16px; }
.specs-row:last-child{ border-bottom:none; }
.specs-row span:last-child{ color: var(--blue-deep); font-weight:700; text-align:right; }

.shop{ padding: 88px 0; background: var(--white); }
.package-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap: 28px; margin-top: 48px; max-width: 780px; margin-left:auto; margin-right:auto; }
.package-card{ background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-lg); padding: 32px 28px; position:relative; }
.package-card-feature{ border: 2px solid var(--blue); box-shadow: var(--shadow-card); }
.ribbon{ position:absolute; top:18px; right:-32px; background: var(--blue); color: var(--white); font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.04em; padding: 5px 36px; transform: rotate(35deg); font-weight:700; }
.package-card h3{ font-family: var(--font-display); font-size: 1.2rem; margin: 0 0 8px; color: var(--ink); }
.package-sub{ color: var(--ink-soft); font-size:0.88rem; margin: 0 0 18px; }
.package-price{ margin-bottom: 20px; }
.price{ font-family: var(--font-display); font-size: 1.6rem; font-weight:700; color: var(--blue-deep); }

.faq{ padding: 88px 0; }
.faq-inner{ max-width: 780px; }
.faq-list{ display:flex; flex-direction:column; gap: 14px; margin-top: 32px; }
details{ background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 22px; }
summary{ cursor:pointer; font-weight:600; font-family: var(--font-display); font-size:0.96rem; color: var(--ink); list-style:none; display:flex; justify-content: space-between; align-items:center; gap:16px; }
summary::-webkit-details-marker{ display:none; }
summary::after{ content:"+"; font-size:1.4rem; color: var(--blue); flex-shrink:0; }
details[open] summary::after{ content:"–"; }
details p{ margin: 14px 0 0; color: var(--ink-soft); line-height:1.6; }

.cta-band{ background: var(--blue); padding: 64px 0; }
.cta-band-inner{ display:flex; align-items:center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cta-band h2{ font-family: var(--font-display); font-weight:700; font-size: clamp(1.4rem,2.4vw,1.9rem); color: var(--white); margin:0; max-width: 540px; }

.site-footer{ background: var(--ink); color: rgba(245,249,252,0.8); padding: 64px 0 0; }
.footer-grid{ display:grid; grid-template-columns: 1fr 2fr; gap: 40px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.footer-brand{ display:flex; gap:12px; align-items:flex-start; }
.footer-brand .mark-ring{ stroke: var(--mint); }
.footer-brand p{ font-size: 0.9rem; line-height:1.5; margin:0; }
.footer-links{ display:grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.footer-links h4{ font-family: var(--font-mono); font-size:0.7rem; text-transform:uppercase; letter-spacing:0.06em; color: var(--mint); margin: 0 0 14px; }
.footer-links a{ display:block; padding: 6px 0; color: rgba(245,249,252,0.8); font-size:0.9rem; }
.footer-links a:hover{ color: var(--white); }
.footer-legal{ padding: 24px 0 32px; font-size: 0.74rem; color: rgba(245,249,252,0.5); line-height:1.65; display:flex; flex-direction:column; gap:8px; }

.main-nav.nav-open{ display:flex; flex-direction:column; position:absolute; top:100%; left:0; right:0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 32px 20px; gap: 4px; }
.main-nav.nav-open a{ padding: 10px 0; border-bottom: 1px solid var(--line); }
.nav-toggle.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity:0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }
.nav-toggle span{ transition: transform .2s ease, opacity .2s ease; }
.reveal-ready{ opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal-in{ opacity: 1; transform: translateY(0); }

@media (max-width: 900px){
  .main-nav{ display:none; }
  .hero-inner{ grid-template-columns: 1fr; }
  .hero-art{ order:-1; max-width: 280px; margin: 0 auto; }
  .feature-grid, .how-steps{ grid-template-columns: 1fr; }
  .specs-inner{ grid-template-columns: 1fr; }
  .package-grid{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
  .footer-links{ grid-template-columns: repeat(2,1fr); }
  .nav-cta{ display:none; }
  .nav-toggle{ display:flex; flex-direction:column; gap:5px; background:none; border:none; cursor:pointer; padding:6px; }
  .nav-toggle span{ width:22px; height:2px; background: var(--ink); }
}
@media (max-width: 520px){
  .wrap{ padding: 0 20px; }
  .hero{ padding-top: 40px; }
  .hero-trust{ gap: 20px; flex-wrap: wrap; }
  .cta-band-inner{ justify-content:center; text-align:center; }
}