/* ============================================================
   Derila Ergo Pillow — Shared Stylesheet
   Theme: classic, light, cloud-blue palette with warm gold CTA
   ============================================================ */

:root{
  --sky-pale:      #eaf5ff;
  --sky-light:     #c7e4ff;
  --sky-blue:      #2889f3;
  --sky-deep:      #144f8c;
  --ink:           #1c2b3a;
  --ink-soft:      #4d5f70;
  --strip-white:   #ffffff;
  --gold:          #f4b400;
  --gold-deep:     #d99a00;
  --line:          #dbe9f7;
  --shadow-soft:   0 12px 30px rgba(20, 79, 140, 0.10);
  --shadow-lift:   0 18px 40px rgba(20, 79, 140, 0.18);
  --radius-lg:     28px;
  --radius-md:     16px;
  --radius-sm:     10px;
  --font-display:  "Fraunces", "Georgia", serif;
  --font-body:     "Mulish", "Segoe UI", sans-serif;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--strip-white);
  line-height:1.7;
  font-size:17.5px;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3,h4{ font-family:var(--font-display); color:var(--sky-deep); line-height:1.2; margin:0 0 .5em; }
h1{ font-size:clamp(2.4rem,5vw,3.6rem); }
h2{ font-size:clamp(1.8rem,3.4vw,2.5rem); }
h3{ font-size:clamp(1.25rem,2.4vw,1.6rem); }
p{ margin:0 0 1em; color:var(--ink-soft); }
.container{ max-width:1180px; margin:0 auto; padding:0 24px; }
.section{ padding:88px 0; }
.section-alt{ background:linear-gradient(180deg,var(--sky-pale) 0%, #f5faff 100%); }
.eyebrow{
  display:inline-block; font-family:var(--font-body); font-weight:800; letter-spacing:.14em;
  text-transform:uppercase; font-size:.78rem; color:var(--sky-blue); margin-bottom:14px;
}
.section-head{ max-width:760px; margin:0 auto 46px; text-align:center; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px; font-family:var(--font-body);
  font-weight:800; font-size:1.02rem; padding:16px 34px; border-radius:50px;
  border:none; cursor:pointer; transition:transform .25s ease, box-shadow .25s ease, background .25s ease;
  box-shadow:var(--shadow-soft);
}
.btn-gold{ background:linear-gradient(135deg,var(--gold),var(--gold-deep)); color:#2a1d00; }
.btn-gold:hover{ transform:translateY(-3px) scale(1.02); box-shadow:var(--shadow-lift); }
.btn-outline{ background:transparent; color:var(--sky-deep); border:2px solid var(--sky-blue); }
.btn-outline:hover{ background:var(--sky-blue); color:#fff; transform:translateY(-2px); }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:500; background:rgba(255,255,255,.92); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{ display:flex; align-items:center; justify-content:space-between; padding:16px 24px; max-width:1180px; margin:0 auto; }
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--font-display); font-weight:700; font-size:1.3rem; color:var(--sky-deep); }
.brand-dot{ width:12px; height:12px; border-radius:50%; background:radial-gradient(circle at 30% 30%,var(--sky-light),var(--sky-blue)); }
.nav-links{ display:flex; gap:34px; list-style:none; margin:0; padding:0; }
.nav-links a{ font-weight:700; font-size:.96rem; color:var(--ink); position:relative; padding:4px 0; }
.nav-links a::after{
  content:""; position:absolute; left:0; bottom:-3px; width:0; height:2px; background:var(--sky-blue);
  transition:width .3s ease;
}
.nav-links a:hover::after{ width:100%; }
.nav-cta{ display:flex; align-items:center; gap:18px; }
.menu-toggle{ display:none; background:none; border:none; font-size:1.6rem; color:var(--sky-deep); cursor:pointer; }

@media (max-width:900px){
  .nav-links{
    position:absolute; top:100%; left:0; right:0; background:#fff; flex-direction:column;
    padding:18px 24px; gap:16px; border-bottom:1px solid var(--line); display:none;
  }
  .nav-links.open{ display:flex; }
  .menu-toggle{ display:block; }
}

/* ---------- Intro / Hero ---------- */
.hero{ padding:64px 0 40px; position:relative; }
.hero-grid{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.hero-media{ position:relative; }
.hero-media img{
  border-radius:var(--radius-lg); box-shadow:var(--shadow-lift); animation:float 5s ease-in-out infinite;
}
@keyframes float{ 0%,100%{ transform:translateY(0);} 50%{ transform:translateY(-14px);} }
.hero-media::before{
  content:""; position:absolute; inset:-30px; z-index:-1; border-radius:50%;
  background:radial-gradient(circle,var(--sky-light) 0%, transparent 70%); opacity:.8;
}
.hero-copy .eyebrow{ margin-bottom:10px; }
.hero-copy h1{ margin-bottom:6px; }
.hero-copy h2{ font-family:var(--font-body); font-weight:700; font-size:1.2rem; color:var(--ink-soft); margin-bottom:22px; }
.offer-line{
  display:inline-block; background:var(--sky-light); color:var(--sky-deep); font-weight:800;
  padding:10px 18px; border-radius:50px; font-size:.92rem; letter-spacing:.03em; margin-bottom:6px;
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{ 0%,100%{ box-shadow:0 0 0 0 rgba(40,137,243,.25);} 50%{ box-shadow:0 0 0 10px rgba(40,137,243,0);} }
.save-line{ font-weight:800; color:var(--gold-deep); margin-bottom:18px; font-size:.98rem; }
.hero-cta-row{ margin:18px 0 10px; }
.hero-subline{ font-size:.92rem; color:var(--ink-soft); font-weight:600; }

/* ---------- Quick overview ---------- */
.overview-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
.overview-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-md); padding:26px 20px;
  text-align:center; box-shadow:var(--shadow-soft); transition:transform .3s ease, box-shadow .3s ease;
}
.overview-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lift); }
.overview-card .icon{ font-size:1.8rem; margin-bottom:10px; }
.overview-card h4{ color:var(--sky-deep); font-family:var(--font-body); font-weight:800; margin-bottom:6px; }
.overview-card p{ font-size:.92rem; margin:0; }

/* ---------- How it works / benefits ---------- */
.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.two-col.reverse{ direction:rtl; }
.two-col.reverse > *{ direction:ltr; }
.two-col img{ border-radius:var(--radius-lg); box-shadow:var(--shadow-soft); }

.step-list{ list-style:none; margin:0; padding:0; counter-reset:step; }
.step-list li{
  display:flex; gap:16px; margin-bottom:22px; counter-increment:step;
}
.step-list li::before{
  content:counter(step); flex-shrink:0; width:38px; height:38px; border-radius:50%;
  background:var(--sky-blue); color:#fff; font-weight:800; display:flex; align-items:center; justify-content:center;
}

/* ---------- Ingredients / materials cards ---------- */
.material-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.material-card{
  background:#fff; border-radius:var(--radius-md); border:1px solid var(--line); padding:28px;
  box-shadow:var(--shadow-soft); transition:transform .3s ease;
}
.material-card:hover{ transform:translateY(-5px); }
.material-card h4{ color:var(--sky-blue); font-family:var(--font-body); font-weight:800; }

/* ---------- Pros & cons ---------- */
.proscons{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.proscons > div{ border-radius:var(--radius-md); padding:30px; }
.pros{ background:#eef8ef; border:1px solid #cdeccf; }
.cons{ background:#fdf1ec; border:1px solid #f4d3c3; }
.proscons ul{ margin:0; padding-left:20px; }
.proscons li{ margin-bottom:10px; color:var(--ink-soft); }

/* ---------- Comparison table & pricing table ---------- */
.table-wrap{ overflow-x:auto; border-radius:var(--radius-md); box-shadow:var(--shadow-soft); }
table{ width:100%; border-collapse:collapse; background:#fff; min-width:600px; }
th,td{ padding:16px 18px; text-align:left; border-bottom:1px solid var(--line); font-size:.95rem; }
thead th{ background:var(--sky-blue); color:#fff; font-family:var(--font-body); font-weight:800; }
tbody tr:hover{ background:var(--sky-pale); }
tbody tr:last-child td{ border-bottom:none; }

/* ---------- Pricing image section ---------- */
.pricing-image-link{ display:block; max-width:1000px; margin:0 auto; border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-lift); transition:transform .3s ease; }
.pricing-image-link:hover{ transform:scale(1.015); }

/* ---------- Guarantee ---------- */
.guarantee{ display:grid; grid-template-columns:.8fr 1.2fr; gap:48px; align-items:center; }
.guarantee img{ border-radius:var(--radius-lg); box-shadow:var(--shadow-soft); }

/* ---------- FAQ ---------- */
.faq-item{
  border:1px solid var(--line); border-radius:var(--radius-sm); margin-bottom:14px; overflow:hidden; background:#fff;
}
.faq-q{
  width:100%; text-align:left; background:none; border:none; padding:18px 22px; font-weight:800;
  font-family:var(--font-body); font-size:1rem; color:var(--sky-deep); cursor:pointer;
  display:flex; justify-content:space-between; align-items:center;
}
.faq-q::after{ content:"+"; font-size:1.3rem; color:var(--sky-blue); transition:transform .3s ease; }
.faq-item.open .faq-q::after{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .35s ease; padding:0 22px; }
.faq-item.open .faq-a{ max-height:400px; padding-bottom:18px; }

/* ---------- Learn more / edu links ---------- */
.edu-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.edu-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-md); padding:26px; box-shadow:var(--shadow-soft);
  transition:transform .3s ease, box-shadow .3s ease;
}
.edu-card:hover{ transform:translateY(-6px); box-shadow:var(--shadow-lift); }
.edu-card h4{ font-family:var(--font-body); font-weight:800; color:var(--sky-deep); margin-bottom:8px; }
.edu-card a{ color:var(--sky-blue); font-weight:800; font-size:.9rem; }

/* ---------- Care checklist ---------- */
.care-list{ list-style:none; margin:0; padding:0; display:grid; gap:14px; }
.care-list li{ display:flex; gap:12px; align-items:flex-start; }
.care-check{ flex-shrink:0; width:26px; height:26px; border-radius:50%; background:var(--sky-light); color:var(--sky-deep); font-weight:800; display:flex; align-items:center; justify-content:center; font-size:.85rem; }

/* ---------- Final CTA strip ---------- */
.final-cta{ text-align:center; background:linear-gradient(135deg,var(--sky-blue),var(--sky-deep)); color:#fff; border-radius:var(--radius-lg); padding:60px 30px; }
.final-cta h2{ color:#fff; }
.final-cta p{ color:#eaf5ff; }

/* ---------- Footer ---------- */
footer{ background:var(--sky-deep); color:#dbeafe; padding:56px 0 30px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:36px; margin-bottom:36px; }
.footer-grid h4{ color:#fff; font-family:var(--font-body); font-weight:800; font-size:.95rem; margin-bottom:14px; }
.footer-grid ul{ list-style:none; margin:0; padding:0; }
.footer-grid li{ margin-bottom:10px; }
.footer-grid a{ color:#c7ddf7; font-size:.92rem; transition:color .2s ease; }
.footer-grid a:hover{ color:#fff; }
.fda-box{ border-top:1px solid rgba(255,255,255,.18); padding-top:26px; font-size:.82rem; color:#a9c4e6; line-height:1.7; }

/* ---------- Back to top ---------- */
.back-to-top{
  position:fixed; right:22px; bottom:22px; width:48px; height:48px; border-radius:50%;
  background:var(--sky-blue); color:#fff; display:flex; align-items:center; justify-content:center;
  font-size:1.3rem; border:none; cursor:pointer; box-shadow:var(--shadow-lift); opacity:0; pointer-events:none;
  transition:opacity .3s ease, transform .3s ease; z-index:600;
}
.back-to-top.visible{ opacity:1; pointer-events:auto; }
.back-to-top:hover{ transform:translateY(-4px); }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- Legal pages ---------- */
.legal-page{ padding:70px 0 100px; }
.legal-page h1{ margin-bottom:8px; }
.legal-updated{ color:var(--ink-soft); font-size:.9rem; margin-bottom:40px; }
.legal-page h2{ font-size:1.4rem; margin-top:40px; }
.legal-page p, .legal-page li{ color:var(--ink-soft); }

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero-grid, .two-col, .two-col.reverse, .guarantee{ grid-template-columns:1fr; }
  .two-col.reverse{ direction:ltr; }
  .overview-grid{ grid-template-columns:repeat(2,1fr); }
  .material-grid{ grid-template-columns:1fr 1fr; }
  .proscons{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .edu-grid{ grid-template-columns:1fr; }
}
@media (max-width:600px){
  .overview-grid, .material-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  .section{ padding:60px 0; }
}