/* ============================================
   NETSEC.AI — Custom Theme
   ============================================ */

:root {
  /* Colors */
  --bg-primary: #0a0e17;
  --bg-secondary: #0f1520;
  --bg-card: #131a2b;
  --bg-card-hover: #182035;
  --bg-terminal: #0c1018;

  --text-primary: #e2e8f0;
  --text-secondary: #8892a4;
  --text-muted: #4a5568;

  --accent-green: #00ff9d;
  --accent-blue: #00b4ff;
  --accent-purple: #a855f7;
  --accent-cyan: #22d3ee;
  --accent-red: #ff5f56;
  --accent-yellow: #ffbd2e;

  --gradient-primary: linear-gradient(135deg, var(--accent-green), var(--accent-cyan));
  --gradient-accent: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));

  --border-color: #1e293b;
  --border-glow: rgba(0, 255, 157, 0.15);

  /* Typography */
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --section-pad: clamp(4rem, 8vw, 8rem);
  --container-max: 1200px;

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-green);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

img {
  max-width: 100%;
  display: block;
}

/* ============================================
   Background Effects
   ============================================ */
#matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  opacity: 0.03;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 255, 157, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 180, 255, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(168, 85, 247, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

#scan-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0.12;
  z-index: 9999;
  pointer-events: none;
  animation: scanline 8s linear infinite;
}

@keyframes scanline {
  0% { top: -2px; }
  100% { top: 100%; }
}

/* Grid overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 255, 157, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 157, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: -1;
  pointer-events: none;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-green { color: var(--accent-green); }

/* ============================================
   Navigation
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0;
  text-decoration: none;
}

.logo:hover {
  text-decoration: none;
}

.logo-bracket { color: var(--text-muted); }
.logo-text { color: var(--text-primary); }
.logo-dot { color: var(--accent-green); }
.logo-ai { color: var(--accent-green); }

.cursor-blink {
  color: var(--accent-green);
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 0.25rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  text-transform: lowercase;
  letter-spacing: 0.02em;
}

.nav-link:hover {
  color: var(--accent-green);
  background: rgba(0, 255, 157, 0.05);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-secondary);
  transition: all 0.3s ease;
  border-radius: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(4rem + var(--section-pad)) clamp(1.5rem, 4vw, 3rem) var(--section-pad);
}

.hero-content {
  max-width: 800px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-top: 2rem;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  margin-top: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

/* ============================================
   Terminal Window
   ============================================ */
.terminal-window {
  background: var(--bg-terminal);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  text-align: left;
  box-shadow:
    0 0 0 1px rgba(0, 255, 157, 0.05),
    0 20px 60px rgba(0, 0, 0, 0.4);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal-dot.red { background: var(--accent-red); }
.terminal-dot.yellow { background: var(--accent-yellow); }
.terminal-dot.green { background: var(--accent-green); }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.prompt {
  color: var(--accent-green);
  font-weight: 700;
  user-select: none;
}

.terminal-output {
  margin-top: 0.5rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.terminal-output p {
  margin-bottom: 0.25rem;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  border: none;
  text-decoration: none;
  letter-spacing: 0.02em;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 255, 157, 0.25);
  color: var(--bg-primary);
}

.btn-primary .btn-icon {
  transition: transform 0.3s var(--ease-out);
}

.btn-primary:hover .btn-icon {
  transform: translateX(4px);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  border-color: var(--accent-green);
  color: var(--accent-green);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 255, 157, 0.1);
}

/* ============================================
   Sections
   ============================================ */
.section {
  padding: var(--section-pad) 0;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(3rem, 6vw, 5rem);
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-green);
  display: block;
  margin-bottom: 1rem;
  opacity: 0.7;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-header p {
  color: var(--text-secondary);
  margin-top: 1rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.05rem;
}

/* ============================================
   Services Grid
   ============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
  display: block;
  color: var(--text-primary);
  text-decoration: none;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.4s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 157, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  color: var(--text-primary);
}

.service-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(0, 255, 157, 0.08);
  margin-bottom: 1.25rem;
  color: var(--accent-green);
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.card-link {
  display: inline-block;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-green);
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s var(--ease-out);
}

.service-card:hover .card-link {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
   Case Studies
   ============================================ */
.case-studies {
  background: var(--bg-secondary);
  position: relative;
}

.case-studies::before,
.case-studies::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.case-studies::before { top: 0; }
.case-studies::after { bottom: 0; }

.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.4s var(--ease-out);
}

.case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 180, 255, 0.2);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.case-number {
  font-family: var(--font-mono);
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 1rem;
}

.case-card h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

.case-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.case-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.3rem 0.75rem;
  background: rgba(0, 180, 255, 0.08);
  color: var(--accent-cyan);
  border-radius: 20px;
  border: 1px solid rgba(0, 180, 255, 0.15);
}

/* ============================================
   Approach / Steps
   ============================================ */
.approach-steps {
  max-width: 700px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border-color);
}

.step:last-child {
  border-bottom: none;
}

.step-number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-green);
  opacity: 0.5;
  flex-shrink: 0;
  width: 3rem;
}

.step-content h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
  padding-bottom: calc(var(--section-pad) + 2rem);
}

.contact-content {
  max-width: 600px;
  margin: 0 auto;
}

.contact-terminal {
  margin-top: 2rem;
}

.contact-info {
  margin: 0.75rem 0;
}

.contact-info p {
  margin-bottom: 0.5rem;
}

.info-label {
  color: var(--accent-cyan);
  display: inline-block;
  min-width: 100px;
}

/* ============================================
   Page Heroes (inner pages)
   ============================================ */
.page-hero {
  padding: calc(6rem + 2rem) 0 3rem;
  text-align: center;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-description {
  color: var(--text-secondary);
  margin-top: 1rem;
  font-size: 1.1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Content Pages
   ============================================ */
.content-container {
  max-width: 800px;
  margin: 0 auto;
}

.content-container h2 {
  font-size: 1.5rem;
  margin-top: 3rem;
  margin-bottom: 1rem;
  font-weight: 600;
}

.content-container h3 {
  font-size: 1.2rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.content-container p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.content-container ul,
.content-container ol {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.content-container li {
  margin-bottom: 0.5rem;
}

.content-container strong {
  color: var(--text-primary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
}

.feature-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}

.feature-item h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--accent-green);
}

.feature-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.page-cta {
  margin-top: 3rem;
  text-align: center;
}

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

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

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

.footer-tagline {
  color: var(--text-secondary);
  margin-top: 1rem;
  font-size: 0.9rem;
  max-width: 300px;
}

.footer-nav h4,
.footer-contact h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

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

.footer-nav li {
  margin-bottom: 0.5rem;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

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

.footer-contact p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* ============================================
   Scroll Animations
   ============================================ */
[data-aos] {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-right"] {
  transform: translateX(-20px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background: rgba(10, 14, 23, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s var(--ease-out);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }

  .services-grid,
  .cases-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .step {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero {
    min-height: auto;
    padding-top: 8rem;
    padding-bottom: 4rem;
  }

  .hero-title {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .terminal-body {
    padding: 1rem;
    font-size: 0.75rem;
  }
}