/* ============================================================
   365VPN — Global Stylesheet
   SEO-friendly, accessible, mobile-first responsive design
   ============================================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --primary: #0066FF;
  --primary-dark: #0052CC;
  --primary-light: #3385FF;
  --accent: #00D4AA;
  --accent-dark: #00B894;
  --bg-dark: #0A0E1A;
  --bg-card: #111827;
  --bg-card-hover: #1A2332;
  --bg-section: #0D1321;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --text-white: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-dark: #1E293B;
  --text-body: #475569;
  --border: rgba(255,255,255,0.08);
  --border-light: #E2E8F0;
  --shadow: 0 4px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.2);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --max-width: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Segoe UI', sans-serif;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-dark); }

/* ---------- Utility ---------- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.text-center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; font-weight: 600;
  font-size: 1rem; cursor: pointer; border: none;
  transition: all var(--transition); text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff; box-shadow: 0 4px 16px rgba(0,102,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0,102,255,0.4); color: #fff;
}
.btn-secondary {
  background: transparent; color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover { background: var(--primary); color: #fff; }
.btn-white {
  background: #fff; color: var(--primary);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(0,0,0,0.15); color: var(--primary); }

/* ---------- Header / Navigation ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255,255,255,0.92); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.5rem; font-weight: 800; color: var(--text-dark);
}
.nav-logo:hover { color: var(--text-dark); }
.nav-logo .logo-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; font-weight: 900;
}
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a {
  font-weight: 500; color: var(--text-body); font-size: 0.95rem;
  position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--primary);
  transition: width var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta { margin-left: 8px; }

/* Mobile menu toggle */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px; background: var(--text-dark);
  margin: 6px 0; transition: all var(--transition); border-radius: 2px;
}

/* ---------- Hero Section ---------- */
.hero {
  position: relative; padding: 160px 0 100px; overflow: hidden;
  background: linear-gradient(160deg, #0A0E1A 0%, #0D1B3E 50%, #0A2463 100%);
  color: #fff;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 800px; height: 800px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,102,255,0.15) 0%, transparent 70%);
}
.hero::after {
  content: ''; position: absolute; bottom: -40%; left: -10%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(0,212,170,0.1) 0%, transparent 70%);
}
.hero .container { position: relative; z-index: 1; }
.hero-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.hero h1 { font-size: 3.5rem; line-height: 1.1; margin-bottom: 24px; color: #fff; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.2rem; color: rgba(255,255,255,0.75); margin-bottom: 36px; max-width: 520px; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual {
  display: flex; justify-content: center; align-items: center;
}
.hero-phone {
  width: 280px; height: 560px; background: var(--bg-card);
  border-radius: 40px; border: 3px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; gap: 20px; padding: 40px 24px;
}
.hero-phone .shield-icon {
  width: 80px; height: 80px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 2.5rem;
}
.hero-phone .status { color: var(--accent); font-weight: 700; font-size: 1.1rem; }
.hero-phone .ip-text { color: var(--text-secondary); font-size: 0.85rem; }
.hero-stats {
  display: flex; gap: 48px; margin-top: 48px;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--accent); }
.hero-stat .label { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 4px; }

/* ---------- Features Section ---------- */
.features { padding: 100px 0; background: var(--bg-light); }
.section-badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 16px; background: rgba(0,102,255,0.08);
  border-radius: 50px; color: var(--primary); font-weight: 600;
  font-size: 0.85rem; margin-bottom: 16px;
}
.section-title { font-size: 2.5rem; margin-bottom: 16px; }
.section-subtitle { font-size: 1.1rem; color: var(--text-body); max-width: 600px; margin: 0 auto 60px; }
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.feature-card {
  background: #fff; border-radius: var(--radius); padding: 40px 32px;
  border: 1px solid var(--border-light); transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px); box-shadow: var(--shadow);
  border-color: transparent;
}
.feature-icon {
  width: 56px; height: 56px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin-bottom: 20px;
}
.feature-icon.blue { background: rgba(0,102,255,0.1); }
.feature-icon.green { background: rgba(0,212,170,0.1); }
.feature-icon.purple { background: rgba(139,92,246,0.1); }
.feature-icon.orange { background: rgba(245,158,11,0.1); }
.feature-icon.red { background: rgba(239,68,68,0.1); }
.feature-icon.teal { background: rgba(20,184,166,0.1); }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 12px; }
.feature-card p { color: var(--text-body); font-size: 0.95rem; }

/* ---------- How It Works ---------- */
.how-it-works { padding: 100px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 48px; }
.step { text-align: center; position: relative; }
.step-number {
  width: 64px; height: 64px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff; font-size: 1.5rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 24px;
}
.step h3 { font-size: 1.2rem; margin-bottom: 12px; }
.step p { color: var(--text-body); font-size: 0.95rem; }

/* ---------- Pricing / CTA Section ---------- */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(160deg, #0A0E1A 0%, #0D1B3E 50%, #0A2463 100%);
  color: #fff; text-align: center;
}
.cta-section h2 { font-size: 2.5rem; color: #fff; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.7); font-size: 1.1rem; max-width: 560px; margin: 0 auto 40px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- Testimonials ---------- */
.testimonials { padding: 100px 0; background: var(--bg-light); }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.testimonial-card {
  background: #fff; border-radius: var(--radius); padding: 32px;
  border: 1px solid var(--border-light);
}
.testimonial-stars { color: #F59E0B; font-size: 1.1rem; margin-bottom: 16px; }
.testimonial-card blockquote { color: var(--text-body); font-size: 0.95rem; margin-bottom: 20px; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 0.9rem;
}
.testimonial-info .name { font-weight: 600; font-size: 0.95rem; }
.testimonial-info .role { color: var(--text-secondary); font-size: 0.8rem; }

/* ---------- FAQ Section ---------- */
.faq { padding: 100px 0; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border-light); padding: 24px 0;
}
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  cursor: pointer; background: none; border: none; width: 100%;
  font-size: 1.1rem; font-weight: 600; color: var(--text-dark);
  text-align: left; padding: 0;
}
.faq-question .icon { font-size: 1.5rem; color: var(--primary); transition: transform var(--transition); }
.faq-item.open .faq-question .icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease;
  color: var(--text-body); font-size: 0.95rem; line-height: 1.7;
}
.faq-item.open .faq-answer { max-height: 300px; padding-top: 16px; }

/* ---------- Blog ---------- */
.blog-section { padding: 100px 0; }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.blog-card {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border-light); background: #fff;
  transition: all var(--transition);
}
.blog-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.blog-card-image {
  height: 200px; background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
}
.blog-card-body { padding: 24px; }
.blog-card-meta { display: flex; gap: 16px; margin-bottom: 12px; }
.blog-card-meta span { font-size: 0.8rem; color: var(--text-secondary); }
.blog-tag {
  display: inline-block; padding: 2px 10px; border-radius: 50px; font-size: 0.75rem;
  font-weight: 600; background: rgba(0,102,255,0.08); color: var(--primary);
}
.blog-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.blog-card h3 a { color: var(--text-dark); }
.blog-card h3 a:hover { color: var(--primary); }
.blog-card p { color: var(--text-body); font-size: 0.9rem; margin-bottom: 16px; }
.read-more { font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 4px; }

/* Blog Post */
.blog-post { padding: 140px 0 80px; }
.blog-post-header { max-width: 760px; margin: 0 auto 48px; text-align: center; }
.blog-post-header h1 { font-size: 2.5rem; margin-bottom: 16px; }
.blog-post-content { max-width: 760px; margin: 0 auto; }
.blog-post-content h2 { font-size: 1.6rem; margin: 40px 0 16px; }
.blog-post-content h3 { font-size: 1.3rem; margin: 32px 0 12px; }
.blog-post-content p { color: var(--text-body); margin-bottom: 20px; font-size: 1.05rem; }
.blog-post-content ul, .blog-post-content ol { margin: 0 0 20px 24px; list-style: disc; }
.blog-post-content li { color: var(--text-body); margin-bottom: 8px; font-size: 1.05rem; }
.blog-post-content blockquote {
  border-left: 4px solid var(--primary); padding: 16px 24px; margin: 24px 0;
  background: var(--bg-light); border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  font-style: italic; color: var(--text-body);
}

/* Blog Sidebar */
.blog-layout { display: grid; grid-template-columns: 1fr 340px; gap: 48px; }
.sidebar-widget { background: var(--bg-light); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.sidebar-widget h3 { font-size: 1.1rem; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--primary); }
.sidebar-widget ul li { padding: 8px 0; border-bottom: 1px solid var(--border-light); }
.sidebar-widget ul li:last-child { border-bottom: none; }
.sidebar-widget ul li a { color: var(--text-body); font-size: 0.9rem; }
.sidebar-widget ul li a:hover { color: var(--primary); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 80px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p { margin-top: 16px; font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a { color: rgba(255,255,255,0.6); font-size: 0.9rem; }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 0; font-size: 0.85rem; color: rgba(255,255,255,0.4);
}
.footer-social { display: flex; gap: 16px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,0.08); display: flex;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,0.6); font-size: 0.9rem;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--primary); color: #fff; }

/* ---------- Page Headers (Inner Pages) ---------- */
.page-header {
  padding: 140px 0 60px;
  background: linear-gradient(160deg, #0A0E1A 0%, #0D1B3E 50%, #0A2463 100%);
  color: #fff; text-align: center;
}
.page-header h1 { font-size: 2.8rem; color: #fff; margin-bottom: 12px; }
.page-header p { color: rgba(255,255,255,0.65); font-size: 1.1rem; }
.breadcrumbs {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-top: 20px; font-size: 0.9rem;
}
.breadcrumbs a { color: rgba(255,255,255,0.5); }
.breadcrumbs a:hover { color: #fff; }
.breadcrumbs span { color: rgba(255,255,255,0.3); }

/* Legal / Content Pages */
.legal-content { padding: 80px 0; max-width: 800px; margin: 0 auto; }
.legal-content h2 { font-size: 1.5rem; margin: 40px 0 12px; color: var(--text-dark); }
.legal-content h3 { font-size: 1.2rem; margin: 28px 0 10px; }
.legal-content p { color: var(--text-body); margin-bottom: 16px; font-size: 1rem; }
.legal-content ul { margin: 0 0 16px 24px; list-style: disc; }
.legal-content li { color: var(--text-body); margin-bottom: 6px; }
.legal-content .updated { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 32px; }

/* ---------- About Page ---------- */
.about-mission { padding: 80px 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-grid h2 { font-size: 2rem; margin-bottom: 16px; }
.about-grid p { color: var(--text-body); margin-bottom: 16px; }
.about-visual {
  height: 360px; border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem;
}
.values-section { padding: 80px 0; background: var(--bg-light); }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 48px; }
.value-card { text-align: center; padding: 32px 20px; }
.value-card .icon { font-size: 2.5rem; margin-bottom: 16px; }
.value-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.value-card p { color: var(--text-body); font-size: 0.9rem; }
.team-section { padding: 80px 0; }
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 48px; }
.team-card { text-align: center; }
.team-avatar {
  width: 100px; height: 100px; border-radius: 50%; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: #fff;
}
.team-card h3 { font-size: 1.1rem; margin-bottom: 4px; }
.team-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero p { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-visual { margin-top: 48px; }
  .hero-stats { justify-content: center; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: 1fr; gap: 32px; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: absolute; top: 72px; left: 0; right: 0;
    background: #fff; padding: 24px; gap: 16px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow);
  }
  .nav-toggle { display: block; }
  .hero { padding: 120px 0 60px; }
  .hero h1 { font-size: 2.2rem; }
  .hero-phone { width: 220px; height: 440px; }
  .hero-stats { flex-direction: column; gap: 24px; }
  .section-title { font-size: 2rem; }
  .features-grid, .blog-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .cta-section h2 { font-size: 2rem; }
  .page-header h1 { font-size: 2rem; }
  .page-header { padding: 120px 0 40px; }
  .values-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr; }
}