/* ==========================================================================
   CyberShield AI - Premium Cyber-Tech SaaS Platform Theme Stylesheet
   ========================================================================== */

:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-glass: rgba(17, 24, 39, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 240, 255, 0.4);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  /* Cyber Accents */
  --accent-cyan: #00f0ff;
  --accent-blue: #3b82f6;
  --accent-violet: #8b5cf6;
  --accent-glow: rgba(0, 240, 255, 0.15);
  
  /* Status Colors */
  --status-safe: #10b981;
  --status-good: #3b82f6;
  --status-warning: #f59e0b;
  --status-medium: #f97316;
  --status-high: #ef4444;
  --status-critical: #dc2626;

  /* Typography & Layout */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 30px -5px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 240, 255, 0.1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.9);
  --border-color: #e2e8f0;
  --border-hover: #0284c7;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --accent-cyan: #0284c7;
  --accent-blue: #2563eb;
  --accent-violet: #7c3aed;
  --accent-glow: rgba(2, 132, 199, 0.1);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  opacity: 0.85;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Background Cyber Mesh */
.bg-grid {
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, var(--border-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo-icon {
  color: var(--accent-cyan);
  filter: drop-shadow(0 0 10px var(--accent-cyan));
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent-cyan);
}

.theme-toggle-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  transition: var(--transition);
}

.theme-toggle-btn:hover {
  border-color: var(--accent-cyan);
  background: var(--accent-glow);
}

/* Mobile Hamburger Menu */
.hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 65px;
  left: 0;
  width: 100%;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1.5rem;
  flex-direction: column;
  gap: 1rem;
  z-index: 999;
}

.mobile-menu.open {
  display: flex;
}

/* Hero Section */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, var(--accent-glow) 0%, transparent 70%);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 2.5rem;
}

/* Main Scan Input Box */
.scan-box {
  max-width: 760px;
  margin: 0 auto 3rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  display: flex;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
}

.scan-input {
  flex: 1;
  background: transparent;
  border: none;
  padding: 1rem 1.25rem;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
}

.btn-scan {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-cyan) 100%);
  color: #000;
  font-weight: 700;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-scan:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px var(--accent-cyan);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Tool Cards Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.tool-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.tool-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background: var(--accent-glow);
  color: var(--accent-cyan);
  margin-bottom: 0.75rem;
}

/* Category Filter Buttons */
.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
  background: var(--accent-glow);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

/* Security Score Component */
.score-container {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin: 1.5rem 0;
}

.score-circle {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: conic-gradient(var(--accent-cyan) calc(var(--score) * 1%), var(--border-color) 0);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.score-circle::before {
  content: "";
  position: absolute;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: var(--bg-secondary);
}

.score-text {
  position: relative;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

/* Status Badges */
.status-tag {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.85rem;
}

.status-safe { background: rgba(16, 185, 129, 0.2); color: var(--status-safe); border: 1px solid var(--status-safe); }
.status-good { background: rgba(59, 130, 246, 0.2); color: var(--status-good); border: 1px solid var(--status-good); }
.status-warning { background: rgba(245, 158, 11, 0.2); color: var(--status-warning); border: 1px solid var(--status-warning); }
.status-medium { background: rgba(249, 115, 22, 0.2); color: var(--status-medium); border: 1px solid var(--status-medium); }
.status-high { background: rgba(239, 68, 68, 0.2); color: var(--status-high); border: 1px solid var(--status-high); }
.status-critical { background: rgba(220, 38, 38, 0.2); color: var(--status-critical); border: 1px solid var(--status-critical); }

/* AdSense Banners */
.adsense-placeholder {
  width: 100%;
  min-height: 90px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 2.5rem 0;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* FAQs Accordion */
.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.accordion-header {
  padding: 1.25rem;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
}

.accordion-body {
  padding: 0 1.25rem 1.25rem;
  display: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.accordion-item.active .accordion-body {
  display: block;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
  margin-top: 5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}