/* ============================================
   BIOMETRICVIEW.COM - Cyber Security Dark Theme
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Sora:wght@300;400;500;600;700&display=swap');

:root {
  --color-bg: #0C0E14;
  --color-bg-surface: #12151E;
  --color-bg-card: #181C28;
  --color-bg-hover: #1E2233;
  --color-primary: #3B82F6;
  --color-primary-light: #60A5FA;
  --color-primary-dark: #2563EB;
  --color-accent: #06D6A0;
  --color-accent-dim: rgba(6,214,160,0.12);
  --color-text: #E2E8F0;
  --color-text-light: #94A3B8;
  --color-text-muted: #64748B;
  --color-border: #1E293B;
  --color-border-light: #2D3748;
  --color-white: #F8FAFC;
  --color-danger: #EF4444;
  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body: 'Sora', 'Segoe UI', sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;
  --shadow-md: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 20px rgba(59,130,246,0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-body);background:var(--color-bg);color:var(--color-text);line-height:1.72;-webkit-font-smoothing:antialiased;min-height:100vh}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary-light);text-decoration:none;transition:color 0.25s}
a:hover{color:var(--color-accent)}

/* Grid scanline overlay */
body::before{content:'';position:fixed;top:0;left:0;width:100%;height:100%;background:
  linear-gradient(rgba(59,130,246,0.02) 1px, transparent 1px),
  linear-gradient(90deg, rgba(59,130,246,0.02) 1px, transparent 1px);
  background-size:40px 40px;pointer-events:none;z-index:0}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(12,14,20,0.88);backdrop-filter:blur(16px);border-bottom:1px solid var(--color-border)}
.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 2rem;display:flex;align-items:center;justify-content:space-between;height:64px}
.site-logo{font-family:var(--font-mono);font-size:1.15rem;font-weight:700;color:var(--color-white);letter-spacing:-0.02em}
.site-logo span{color:var(--color-primary)}
.main-nav{display:flex;gap:0}
.main-nav a{font-family:var(--font-body);font-size:0.78rem;font-weight:500;color:var(--color-text-muted);padding:0.4rem 0.7rem;border-radius:var(--radius-sm);transition:all 0.25s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:var(--color-primary-light);background:rgba(59,130,246,0.08)}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;width:36px;height:36px;position:relative}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{display:block;width:20px;height:1.5px;background:var(--color-text);border-radius:2px;transition:all 0.3s;position:absolute;left:8px}
.menu-toggle span{top:17px}.menu-toggle span::before{content:'';top:-6px}.menu-toggle span::after{content:'';top:6px}
.mobile-nav{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;background:rgba(12,14,20,0.97);backdrop-filter:blur(20px);padding:1.5rem;z-index:99;overflow-y:auto}
.mobile-nav.open{display:flex;flex-direction:column;gap:0.15rem}
.mobile-nav a{font-size:0.92rem;font-weight:500;color:var(--color-text-light);padding:0.75rem 1rem;border-radius:var(--radius-sm);border-bottom:1px solid var(--color-border)}
.mobile-nav a:hover{background:rgba(59,130,246,0.06);color:var(--color-primary-light)}

/* Hero */
.hero{position:relative;min-height:460px;display:flex;align-items:center;overflow:hidden;background:var(--color-bg)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0.3}
.hero::after{content:'';position:absolute;inset:0;background:linear-gradient(160deg,rgba(12,14,20,0.85) 0%,rgba(12,14,20,0.5) 50%,rgba(12,14,20,0.75) 100%)}
.hero-content{position:relative;z-index:2;max-width:var(--max-width);margin:0 auto;padding:4rem 2rem;width:100%}
.hero-badge{display:inline-block;font-family:var(--font-mono);font-size:0.65rem;font-weight:700;letter-spacing:0.14em;text-transform:uppercase;color:var(--color-accent);background:var(--color-accent-dim);border:1px solid rgba(6,214,160,0.25);padding:0.3rem 0.9rem;border-radius:100px;margin-bottom:1.2rem}
.hero h1{font-family:var(--font-display);font-size:clamp(2rem,4.5vw,3.2rem);font-weight:700;color:var(--color-white);line-height:1.15;max-width:620px;margin-bottom:1rem;letter-spacing:-0.02em}
.hero p{font-size:1rem;color:var(--color-text-light);max-width:500px;line-height:1.7;margin-bottom:1.75rem}
.hero-cta{display:inline-flex;align-items:center;gap:0.5rem;font-family:var(--font-body);font-size:0.82rem;font-weight:600;color:var(--color-bg);background:var(--color-primary);padding:0.75rem 1.5rem;border-radius:var(--radius-sm);transition:all 0.3s}
.hero-cta:hover{background:var(--color-accent);color:var(--color-bg);transform:translateY(-1px);box-shadow:var(--shadow-glow)}
.hero-cta svg{width:15px;height:15px}

/* Breadcrumb */
.breadcrumb{max-width:var(--max-width);margin:0 auto;padding:1.2rem 2rem 0;font-size:0.75rem;color:var(--color-text-muted)}
.breadcrumb a{color:var(--color-text-light)}.breadcrumb a:hover{color:var(--color-primary)}.breadcrumb span{margin:0 0.4rem}

/* Layout */
.page-layout{max-width:var(--max-width);margin:0 auto;padding:2.5rem 2rem 4rem;display:grid;grid-template-columns:1fr 280px;gap:2.5rem;position:relative;z-index:1}

/* Article */
.article-content{min-width:0}
.article-content h2{font-family:var(--font-display);font-size:1.65rem;font-weight:700;color:var(--color-white);margin:2.5rem 0 0.85rem;line-height:1.25}
.article-content h2:first-child{margin-top:0}
.article-content h3{font-family:var(--font-display);font-size:1.2rem;font-weight:600;color:var(--color-white);margin:1.8rem 0 0.6rem}
.article-content p{margin-bottom:1.15rem;color:var(--color-text);font-size:0.95rem}
.article-content strong{font-weight:600;color:var(--color-white)}

.content-image{margin:2rem 0;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--color-border)}
.content-image img{width:100%;height:280px;object-fit:cover}
.content-image figcaption{padding:0.6rem 1rem;background:var(--color-bg-surface);font-size:0.75rem;color:var(--color-text-muted);text-align:center}

.highlight-box{background:rgba(59,130,246,0.06);border-left:3px solid var(--color-primary);padding:1.3rem 1.5rem;border-radius:0 var(--radius-md) var(--radius-md) 0;margin:2rem 0}
.highlight-box p{margin-bottom:0.45rem;font-size:0.92rem}.highlight-box p:last-child{margin-bottom:0}

.benefits-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:1rem;margin:2rem 0}
.benefit-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.3rem;transition:all 0.3s}
.benefit-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-glow);transform:translateY(-2px)}
.benefit-icon{width:40px;height:40px;border-radius:var(--radius-sm);background:rgba(59,130,246,0.1);display:flex;align-items:center;justify-content:center;margin-bottom:0.8rem;font-size:1.15rem}
.benefit-card h4{font-size:1rem;font-weight:600;margin-bottom:0.4rem;color:var(--color-white)}
.benefit-card p{font-size:0.85rem;color:var(--color-text-light);line-height:1.6;margin-bottom:0}

/* Sidebar */
.sidebar{display:flex;flex-direction:column;gap:1.5rem}
.sidebar-widget{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.3rem}
.sidebar-widget h3{font-size:1rem;font-weight:700;margin-bottom:0.85rem;padding-bottom:0.6rem;border-bottom:2px solid var(--color-primary);color:var(--color-white)}
.sidebar-nav a{display:block;font-size:0.82rem;color:var(--color-text-light);padding:0.5rem 0;border-bottom:1px solid var(--color-border);transition:all 0.2s}
.sidebar-nav a:last-child{border-bottom:none}
.sidebar-nav a:hover{color:var(--color-primary-light);padding-left:0.5rem}
.sidebar-nav a.active{color:var(--color-primary);font-weight:600}

.ad-space{background:var(--color-bg-surface);border:2px dashed var(--color-border-light);border-radius:var(--radius-md);padding:2.5rem 1.5rem;text-align:center;font-size:0.75rem;color:var(--color-text-muted);min-height:250px;display:flex;align-items:center;justify-content:center}
.ad-space-inline{margin:2.5rem 0;background:var(--color-bg-surface);border:2px dashed var(--color-border-light);border-radius:var(--radius-md);padding:1.5rem;text-align:center;font-size:0.75rem;color:var(--color-text-muted);min-height:90px;display:flex;align-items:center;justify-content:center}

/* Cards */
.section-cards{max-width:var(--max-width);margin:0 auto;padding:3rem 2rem 4rem;position:relative;z-index:1}
.section-heading{text-align:center;margin-bottom:2.5rem}
.section-heading h2{font-size:1.85rem;font-weight:700;color:var(--color-white);margin-bottom:0.5rem}
.section-heading p{font-size:0.95rem;color:var(--color-text-light);max-width:520px;margin:0 auto}
.cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:1.25rem}
.topic-card{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;transition:all 0.35s;text-decoration:none;display:block}
.topic-card:hover{border-color:var(--color-primary);box-shadow:var(--shadow-glow);transform:translateY(-3px)}
.topic-card-img{width:100%;height:180px;object-fit:cover;opacity:0.8}
.topic-card-body{padding:1.25rem}
.topic-card-body h3{font-size:1.05rem;font-weight:600;color:var(--color-white);margin-bottom:0.35rem}
.topic-card-body p{font-size:0.83rem;color:var(--color-text-light);line-height:1.6;margin-bottom:0.8rem}
.card-link{font-size:0.75rem;font-weight:600;color:var(--color-primary);letter-spacing:0.02em;display:inline-flex;align-items:center;gap:0.3rem}
.card-link::after{content:'→';transition:transform 0.2s}
.topic-card:hover .card-link::after{transform:translateX(4px)}

/* TOC */
.toc{background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.3rem 1.5rem;margin-bottom:2rem}
.toc h3{font-family:var(--font-mono);font-size:0.72rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--color-text-muted);margin-bottom:0.7rem}
.toc ol{list-style:decimal;padding-left:1.2rem}
.toc li{font-size:0.85rem;padding:0.2rem 0}
.toc a{color:var(--color-text-light)}.toc a:hover{color:var(--color-primary)}

/* FAQ */
.faq-section{margin:2.5rem 0}
.faq-item{border-bottom:1px solid var(--color-border);padding:1.1rem 0}
.faq-item h3{font-size:1.05rem;font-weight:600;color:var(--color-white);margin-bottom:0.45rem}
.faq-item p{color:var(--color-text-light);font-size:0.9rem}

/* Footer */
.site-footer{background:var(--color-bg-surface);border-top:1px solid var(--color-border);position:relative;z-index:1}
.footer-inner{max-width:var(--max-width);margin:0 auto;padding:3rem 2rem 1.5rem;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2.5rem}
.footer-brand .site-logo{margin-bottom:0.9rem;display:inline-block}
.footer-brand p{font-size:0.85rem;color:var(--color-text-muted);line-height:1.65;max-width:300px}
.footer-col h4{font-family:var(--font-mono);font-size:0.68rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--color-text-light);margin-bottom:1rem}
.footer-col a{display:block;font-size:0.82rem;color:var(--color-text-muted);padding:0.28rem 0;transition:color 0.2s}
.footer-col a:hover{color:var(--color-primary-light)}
.footer-bottom{max-width:var(--max-width);margin:0 auto;padding:1.2rem 2rem;border-top:1px solid var(--color-border);font-size:0.7rem;color:var(--color-text-muted);display:flex;justify-content:space-between}

/* Responsive */
@media(max-width:960px){.main-nav{display:none}.menu-toggle{display:block}.page-layout{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr;gap:1.5rem}.footer-bottom{flex-direction:column;gap:0.4rem}}
@media(max-width:640px){.hero{min-height:380px}.hero-content{padding:2.5rem 1.25rem}.header-inner{padding:0 1.25rem}.page-layout{padding:1.5rem 1.25rem 3rem}.section-cards{padding:2rem 1.25rem 3rem}.cards-grid{grid-template-columns:1fr}.benefits-grid{grid-template-columns:1fr}.content-image img{height:200px}}

@keyframes fadeInUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}

@media print {
  .site-header, .mobile-nav, .menu-toggle, .sidebar, .site-footer, .hero-cta, .hero-badge { display: none !important; }
  .hero { min-height: auto !important; padding: 20px 0; }
  .hero-bg { display: none; }
  .hero-content { position: static; color: #000; text-shadow: none; }
  .page-layout { display: block; }
  .article-content { max-width: 100%; }
  body { font-size: 12pt; line-height: 1.5; color: #000; background: #fff; }
  a { color: #000; text-decoration: underline; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; }
  .comparison-table { font-size: 9pt; }
  .benefits-grid { display: block; }
  .benefit-card { border: 1px solid #ccc; margin-bottom: 8px; page-break-inside: avoid; }
  .highlight-box { border: 1px solid #999; background: #f5f5f5 !important; }
  img { max-width: 100%; }
  .related-articles { page-break-before: always; }
}