/* ========================================
   Ghostbyte - Application Security
   ======================================== */

:root {
  /* Dark cybersecurity palette */
  --bg-dark: #0a0e14;
  --bg-card: #12161d;
  --bg-elevated: #1a1f29;
  
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  
  /* Accent - cyan/green for security/tech */
  --accent: #39d353;
  --accent-dim: #2ea043;
  --accent-glow: rgba(57, 211, 83, 0.15);
  
  /* Borders */
  --border: rgba(139, 148, 158, 0.15);
  
  /* Typography */
  --font-sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Spacing */
  --container: 1200px;
  --section-padding: 5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-dark);
}

.btn-primary:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-outline:hover {
  background: var(--accent-glow);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* ========================================
   Header
   ======================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(10, 14, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-mark {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 500;
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.2s;
}

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

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: transform 0.3s;
}

.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--bg-elevated);
  padding: 2rem;
  flex-direction: column;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}

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

@media (max-width: 768px) {
  .nav,
  .header .btn {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
}

/* ========================================
   Hero
   ======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 6rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(57, 211, 83, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 211, 83, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
}

.glow-1 {
  width: 500px;
  height: 500px;
  background: var(--accent);
  top: -200px;
  right: -100px;
}

.glow-2 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  bottom: -100px;
  left: -50px;
  opacity: 0.2;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-title .highlight {
  color: var(--accent);
  position: relative;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 2rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ========================================
   Services Preview
   ======================================== */

.services-preview {
  padding: var(--section-padding) 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 3rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: all 0.3s ease;
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.service-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  transition: gap 0.2s;
}

.service-link:hover {
  gap: 0.5rem;
}

/* ========================================
   Stats
   ======================================== */

.stats {
  padding: 4rem 0;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

@media (max-width: 600px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   CTA Section
   ======================================== */

.cta-section {
  padding: var(--section-padding) 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.cta-section p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* ========================================
   Footer
   ======================================== */

.footer {
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
}

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

.footer-brand p {
  color: var(--text-secondary);
  margin-top: 1rem;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links a,
.footer-contact a {
  color: var(--text-secondary);
  transition: color 0.2s;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* ========================================
   Page Headers (for inner pages)
   ======================================== */

.page-hero {
  padding: 8rem 0 4rem;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 1rem;
}

.page-hero p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   Services Page
   ======================================== */

.service-detail {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border);
}

.service-detail:last-of-type {
  border-bottom: none;
}

.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  align-items: start;
}

.service-detail h2 {
  font-size: 1.5rem;
  color: var(--accent);
}

.service-detail h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--text-primary);
}

.service-detail ul {
  margin: 0.5rem 0 1rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.service-detail li {
  margin-bottom: 0.25rem;
}

@media (max-width: 768px) {
  .service-detail-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   About Page
   ======================================== */

.about-content {
  padding: 3rem 0;
  max-width: 720px;
}

.about-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.values-list {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
}

.value-item {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

.value-item .value-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.value-item h3 {
  margin-bottom: 0.25rem;
}

.value-item p {
  margin: 0;
  color: var(--text-secondary);
}

/* ========================================
   Contact Page
   ======================================== */

.contact-layout .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-layout {
  padding: 3rem 0;
}

.contact-info h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.contact-info p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-details a {
  color: var(--accent);
  font-weight: 500;
}

.contact-details a:hover {
  text-decoration: underline;
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

@media (max-width: 768px) {
  .contact-layout .container {
    grid-template-columns: 1fr;
  }
}