/* ================================================================
   SENTINEL THEME — Clinical Authority Dark
   Palette: Deep Navy + Electric Cyan + Red Alert + Success Green
   Fonts: Outfit (headings) + Inter (body) + Roboto Mono (specs)
   Best for: Medical devices, senior care, safety, rehabilitation
================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Inter:wght@400;500;600;700&family=Roboto+Mono:wght@500;700&display=swap');

:root {
  --bg:            #070D1F;
  --bg-2:          #0B1428;
  --bg-card:       rgba(15,30,56,0.75);
  --border:        rgba(255,255,255,0.10);
  --border-cyan:   rgba(0,207,255,0.25);

  --primary:       #00CFFF;
  --primary-hover: #00A3CC;
  --primary-glow:  rgba(0,207,255,0.38);
  --accent:        #3A7BFF;
  --danger:        #FF1744;
  --danger-light:  rgba(255,23,68,0.12);
  --success:       #00E676;
  --success-light: rgba(0,230,118,0.10);
  --warning:       #FFB300;
  --warning-light: rgba(255,179,0,0.12);

  --text:          #EEF2FF;
  --text-muted:    #90A0B7;
  --text-dim:      #5A6A82;

  --heading-font:  'Outfit', -apple-system, sans-serif;
  --body-font:     'Inter', -apple-system, sans-serif;
  --mono-font:     'Roboto Mono', monospace;

  --radius-sm: 8px; --radius-md: 14px;
  --radius-lg: 22px; --radius-pill: 9999px;
  --shadow-lg: 0 20px 48px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 36px var(--primary-glow);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-family: var(--body-font); background: var(--bg); color: var(--text); line-height: 1.6; font-size: 16px; }
body { overflow-x: hidden; background: radial-gradient(circle at 50% 0%, #0F1E38 0%, var(--bg) 70%); padding-bottom: 80px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
h1,h2,h3,h4,h5,h6 { font-family: var(--heading-font); font-weight: 700; color: #fff; line-height: 1.22; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 84px 0; }
.section-alt { background: var(--bg-2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-tag {
  display: inline-block; background: rgba(0,207,255,0.1); color: var(--primary);
  font-family: var(--heading-font); font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .2em; padding: 5px 14px;
  border-radius: var(--radius-pill); border: 1px solid rgba(0,207,255,0.25); margin-bottom: 14px;
}
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-title { font-size: clamp(1.8rem,3.5vw,2.7rem); margin-bottom: 14px; }
.section-subtitle { color: var(--text-muted); font-size: 1.05rem; }

/* ── CTA BUTTON ──────────────────────────────────────────────── */
.cta-button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  background: linear-gradient(135deg, var(--primary) 0%, #0099CC 100%);
  color: var(--bg); font-family: var(--heading-font); font-weight: 800; font-size: 15px;
  padding: 18px 36px; border-radius: var(--radius-pill);
  box-shadow: 0 0 28px var(--primary-glow), 0 8px 20px rgba(0,0,0,0.4);
  transition: var(--transition); text-transform: uppercase; letter-spacing: .06em;
}
.cta-button:hover { transform: translateY(-3px); box-shadow: 0 0 52px var(--primary-glow), 0 16px 36px rgba(0,0,0,0.5); color: var(--bg); }

/* ── TOP BAR ────────────────────────────────────────────────── */
.top-bar {
  background: linear-gradient(90deg, #d00000, #ff4800);
  color: #fff; text-align: center; padding: 10px 15px;
  font-size: 0.9rem; font-weight: 600; position: relative; z-index: 1010;
}
.top-bar-content { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.countdown-box { background: rgba(0,0,0,0.3); padding: 3px 10px; border-radius: var(--radius-pill); font-family: monospace; font-size: 1rem; font-weight: 700; border: 1px solid rgba(255,255,255,0.3); }

/* ── HEADER ─────────────────────────────────────────────────── */
.header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(7,13,31,0.88); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 20px; }
.logo { font-family: var(--heading-font); font-size: 1.3rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 8px; }
.logo-badge { background: var(--primary); color: var(--bg); font-size: 9px; font-weight: 800; padding: 3px 8px; border-radius: var(--radius-pill); text-transform: uppercase; letter-spacing: .1em; }
.nav-links { display: flex; gap: 26px; }
.nav-links li a { font-size: 14px; font-weight: 500; color: var(--text-muted); }
.nav-links li a:hover { color: var(--primary); }
.header-cta { background: var(--primary); color: var(--bg); font-family: var(--heading-font); font-weight: 700; font-size: 13px; padding: 10px 20px; border-radius: var(--radius-pill); text-transform: uppercase; letter-spacing: .04em; }
.header-cta:hover { background: var(--primary-hover); color: var(--bg); }

/* ── MARQUEE ─────────────────────────────────────────────────── */
.marquee-container { background: rgba(0,207,255,0.05); border-bottom: 1px solid var(--border-cyan); overflow: hidden; padding: 10px 0; }
.marquee-track { display: flex; gap: 56px; white-space: nowrap; animation: mScroll 28s linear infinite; width: max-content; }
.marquee-item { font-size: 13px; font-weight: 600; color: var(--text-muted); }
@keyframes mScroll { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

/* ── HERO ───────────────────────────────────────────────────── */
.hero { padding: 70px 0 80px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.hero-gallery { display: flex; flex-direction: column; gap: 14px; }
.main-preview-card { position: relative; background: var(--bg-card); border: 1px solid var(--border-cyan); border-radius: var(--radius-lg); padding: 20px; box-shadow: var(--shadow-glow); }
.badge-featured { position: absolute; top: 16px; left: 16px; background: var(--primary); color: var(--bg); font-size: 10px; font-weight: 800; padding: 4px 12px; border-radius: var(--radius-pill); text-transform: uppercase; letter-spacing: .1em; z-index: 2; }
.main-preview-card img { border-radius: var(--radius-md); width: 100%; }
.thumbnails-row { display: flex; gap: 10px; }
.thumb-item { flex: 1; border: 2px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; transition: var(--transition); }
.thumb-item:hover, .thumb-item.active { border-color: var(--primary); }
.thumb-item img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.rating-badge { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; font-size: 14px; color: var(--text-muted); }
.stars { color: var(--warning); font-size: 18px; }
.rating-text { font-size: 13.5px; }
.hero-title { font-size: clamp(1.9rem,3.5vw,3rem); margin-bottom: 16px; text-transform: uppercase; }
.hero-subtitle { color: var(--text-muted); font-size: 1.06rem; margin-bottom: 26px; line-height: 1.7; }
.hero-benefits { display: flex; flex-direction: column; gap: 12px; margin-bottom: 30px; }
.hero-benefits li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; }
.check-icon { width: 22px; height: 22px; min-width: 22px; background: var(--primary); color: var(--bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 800; margin-top: 1px; }
.price-cta-box { background: var(--bg-card); border: 1px solid var(--border-cyan); border-radius: var(--radius-lg); padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.price-row { display: flex; align-items: center; gap: 14px; }
.old-price { font-size: 1.1rem; color: var(--text-dim); text-decoration: line-through; }
.current-price { font-family: var(--heading-font); font-size: 2.2rem; font-weight: 900; color: #fff; }
.save-badge { background: var(--success); color: #030a18; font-size: 12px; font-weight: 800; padding: 4px 12px; border-radius: var(--radius-pill); }
.cta-subtext { display: flex; align-items: center; gap: 14px; font-size: 12.5px; color: var(--text-dim); flex-wrap: wrap; }

/* ── SCIENCE SECTION ────────────────────────────────────────── */
.science-section { padding: 84px 0; }
.features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.feature-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 30px 24px; border-left: 4px solid var(--primary); transition: var(--transition); }
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,0.4); }
.feature-icon { font-size: 2rem; margin-bottom: 14px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.feature-card p { color: var(--text-muted); font-size: 14px; line-height: 1.65; }

/* ── SPECS BOX ───────────────────────────────────────────────── */
.specs-box { background: var(--bg-card); border: 1px solid var(--border-cyan); border-radius: var(--radius-lg); padding: 36px; margin-top: 40px; }
.specs-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.spec-item { background: rgba(0,0,0,0.2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px; }
.spec-item label { font-family: var(--mono-font); font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .1em; display: block; margin-bottom: 6px; }
.spec-item span { font-family: var(--heading-font); font-size: 1rem; font-weight: 700; color: var(--primary); }

/* ── SURFACE GRID ────────────────────────────────────────────── */
.surface-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; }
.surface-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.surface-card.good { border-top: 3px solid var(--success); }
.surface-card.bad { border-top: 3px solid var(--danger); }

/* ── SHOWCASE ────────────────────────────────────────────────── */
.showcase-section { padding: 84px 0; background: var(--bg-2); }
.showcase-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.showcase-img-wrap { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-lg); }
.showcase-img-wrap img { width: 100%; }
.showcase-content { display: flex; flex-direction: column; gap: 18px; }

/* ── STEPS ──────────────────────────────────────────────────── */
.steps-section { padding: 84px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.step-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 24px; text-align: center; transition: var(--transition); }
.step-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.step-number { font-family: var(--heading-font); font-size: 3rem; font-weight: 900; color: var(--primary); display: block; margin-bottom: 16px; }
.step-card h3 { margin-bottom: 10px; font-size: 1.1rem; }
.step-card p { color: var(--text-muted); font-size: 14px; }

/* ── COMPARISON ──────────────────────────────────────────────── */
.comparison-section { padding: 84px 0; background: var(--bg-2); }
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--border); }
.comp-table { width: 100%; border-collapse: collapse; }
.comp-table th, .comp-table td { padding: 15px 18px; font-size: 14px; text-align: center; border-bottom: 1px solid var(--border); }
.comp-table th { background: rgba(0,0,0,0.3); font-family: var(--heading-font); font-size: 12px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; }
.comp-table td:first-child { text-align: left; color: var(--text); }
.comp-table tr:last-child td { border-bottom: none; }
.comp-table tr:hover td { background: rgba(255,255,255,0.02); }
.highlight-col { background: rgba(0,207,255,0.07); }
.comp-table th.highlight-col { color: var(--primary); }
.check-yes { color: var(--success); font-weight: 700; }

/* ── REVIEWS ────────────────────────────────────────────────── */
.reviews-section { padding: 84px 0; }
.reviews-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.review-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; }
.review-header { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.avatar { border-radius: 50%; border: 2px solid var(--border-cyan); object-fit: cover; flex-shrink: 0; }
.user-info h4 { font-size: 1rem; margin-bottom: 3px; }
.verified-tag { font-size: 11px; color: var(--success); font-weight: 600; }
.stars { color: var(--warning); font-size: 16px; margin-bottom: 12px; display: block; }
.review-body p { color: var(--text-muted); font-size: 14px; line-height: 1.65; }

/* ── GUARANTEE ──────────────────────────────────────────────── */
.guarantee-section { padding: 84px 0; background: var(--bg-2); }
.guarantee-box { display: flex; align-items: center; gap: 40px; background: var(--bg-card); border: 1px solid var(--border-cyan); border-radius: var(--radius-lg); padding: 48px; box-shadow: var(--shadow-glow); }
.guarantee-img { flex-shrink: 0; }
.guarantee-content h3 { font-size: 1.6rem; margin-bottom: 14px; }
.guarantee-content p { color: var(--text-muted); margin-bottom: 22px; }

/* ── FAQ ────────────────────────────────────────────────────── */
.faq-section { padding: 84px 0; }
.faq-container { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 10px; }
details { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
details[open] { border-color: var(--primary); }
summary { padding: 20px 24px; font-family: var(--heading-font); font-weight: 600; font-size: 15px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
summary::after { content:'+'; font-size:1.4rem; color:var(--primary); }
details[open] summary::after { content:'−'; }
details p { padding: 0 24px 20px; color: var(--text-muted); font-size: 14.5px; line-height: 1.7; }

/* ── FOOTER ─────────────────────────────────────────────────── */
.footer { background: rgba(0,0,0,0.5); border-top: 1px solid var(--border); padding: 36px 0; }
.footer-content { text-align: center; }
.footer-links { display: flex; gap: 22px; justify-content: center; flex-wrap: wrap; margin-bottom: 20px; }
.footer-links a { font-size: 13px; color: var(--text-muted); }
.footer-links a:hover { color: var(--primary); }
.footer-content p { font-size: 12px; color: var(--text-dim); max-width: 680px; margin: 0 auto 6px; }

/* ── STICKY BAR ─────────────────────────────────────────────── */
.sticky-bar { position:fixed; bottom:0; left:0; right:0; z-index:2000; background:rgba(7,13,31,0.97); border-top:1px solid var(--border-cyan); padding:12px 20px; transform:translateY(100%); transition:transform .35s ease; display:none; backdrop-filter:blur(14px); }
.sticky-bar.visible { transform:translateY(0); display:block; }
.sticky-bar-inner { max-width:var(--container); margin:0 auto; display:flex; align-items:center; justify-content:space-between; gap:16px; }
.sticky-price { display:flex; align-items:center; gap:10px; }
.sticky-new { font-family:var(--heading-font); font-size:1.4rem; font-weight:900; color:var(--primary); }
.sticky-old { font-size:0.9rem; color:var(--text-dim); text-decoration:line-through; }

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width:1024px) {
  .hero-grid, .showcase-grid { grid-template-columns:1fr; gap:36px; }
  .features-grid, .reviews-grid { grid-template-columns:repeat(2,1fr); }
  .steps-grid { grid-template-columns:1fr; max-width:500px; margin:0 auto; }
  .specs-grid { grid-template-columns:repeat(2,1fr); }
  .surface-grid { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .section,.science-section,.showcase-section,.steps-section,.comparison-section,.reviews-section,.guarantee-section,.faq-section { padding:52px 0; }
  .nav-links { display:none; }
  .features-grid, .reviews-grid { grid-template-columns:1fr; }
  .guarantee-box { flex-direction:column; text-align:center; padding:28px 18px; }
  .sticky-bar { display:block; }
}