/* Premium Landing Page CSS for XEOSystem.com */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --primary: #0A1628;
  --secondary: #F5A623;
  --accent: #00D4FF;
  --panel-bg: rgba(255, 255, 255, 0.03);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text-main: #FFFFFF;
  --text-muted: #B0B8C8;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--primary);
  background-image: 
    radial-gradient(at 0% 0%, rgba(0, 212, 255, 0.08) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(245, 166, 35, 0.05) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(10, 22, 40, 0.5) 0px, transparent 50%);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  overflow-x: hidden;
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header & Nav */
header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--panel-border);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.8);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo span {
  font-weight: 300;
  color: var(--text-muted);
}

nav a {
  color: var(--text-muted);
  text-decoration: none;
  margin-left: 2rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--accent);
}

/* Hero Section */
.hero {
  padding: 8rem 0 6rem;
  text-align: center;
  position: relative;
}

.hero-tag {
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent);
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(0, 212, 255, 0.2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero h1 {
  font-size: 4rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.3rem;
  color: var(--text-muted);
  max-width: 800px;
  margin: 0 auto 2.5rem;
}

.cta-group {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  font-size: 1rem;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--secondary) 0%, #d4840d 100%);
  color: #fff;
  box-shadow: 0 4px 15px rgba(245, 166, 35, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 166, 35, 0.5);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: #fff;
}

.btn-secondary:hover {
  background: var(--panel-bg);
  border-color: var(--accent);
}

/* Glass Panels */
.glass-card {
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
  border-color: rgba(0, 212, 255, 0.3);
  box-shadow: 0 12px 40px rgba(0, 212, 255, 0.1);
}

/* Sections General */
section {
  padding: 6rem 0;
}

section h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3.5rem;
}

/* Shift Section */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 2rem;
}

.comparison-table th {
  padding: 1.25rem;
  font-size: 1.1rem;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 2px solid var(--panel-border);
}

.comparison-table td {
  padding: 1.25rem;
  text-align: center;
  border-bottom: 1px solid var(--panel-border);
  font-size: 1.1rem;
}

.comparison-table tr:hover td {
  background: rgba(255, 255, 255, 0.01);
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* Pricing Cards */
.pricing-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.pricing-card.premium {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.15);
}

.price {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  font-family: 'Outfit', sans-serif;
  margin: 1.5rem 0;
}

.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  margin-bottom: 2rem;
}

.pricing-features li {
  margin-bottom: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

.pricing-features li::before {
  content: '✓';
  color: var(--accent);
  margin-right: 0.75rem;
  font-weight: bold;
}

/* FAQ Accordion */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 1.5rem;
}

.faq-question {
  font-size: 1.2rem;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-question::after {
  content: '+';
  color: var(--accent);
  font-size: 1.5rem;
}

.faq-answer {
  margin-top: 1rem;
  color: var(--text-muted);
  display: none;
}

/* Footer */
footer {
  background: #050b14;
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--panel-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-about p {
  color: var(--text-muted);
  margin-top: 1rem;
  max-width: 300px;
}

.footer-links h4 {
  margin-bottom: 1.25rem;
  font-size: 1rem;
  text-transform: uppercase;
  color: #fff;
}

.footer-links ul {
  list-style: none;
}

.footer-links ul li {
  margin-bottom: 0.75rem;
}

.footer-links ul li a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links ul li a:hover {
  color: var(--accent);
}

.footer-bottom {
  border-top: 1px solid var(--panel-border);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero h1 {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  .grid-3, .grid-4, .grid-2, .footer-grid {
    grid-template-columns: 1fr;
  }
  header nav {
    display: none;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}