/* === VARIABLES === */
:root {
  --color-bg: #030508;
  --color-bg-alt: #080d12;
  --color-surface: rgba(12, 20, 30, 0.55);
  --color-cyan: #00f0ff;
  --color-cyan-dim: rgba(0, 240, 255, 0.15);
  --color-green: #00ff41;
  --color-green-dim: rgba(0, 255, 65, 0.15);
  --color-text: #e2f1f8;
  --color-text-muted: #7a8d99;
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Rajdhani', monospace;
  --transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* CRT Scanline & Vignette Overlay */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.15) 50%);
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.25;
}

body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, transparent 50%, rgba(0,0,0,0.8) 120%);
  pointer-events: none;
  z-index: 9998;
}

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

a:hover {
  color: var(--color-green);
  text-shadow: 0 0 8px var(--color-green-dim);
}

ul {
  list-style: none;
}

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

/* === UTILITIES & KEYFRAMES === */
.container {
  width: 92%;
  max-width: 1200px;
  margin: 0 auto;
}

.glass {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-cyan-dim);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.icon {
  width: 100%;
  height: 100%;
  display: block;
}

.section-glow {
  position: relative;
  padding: 6rem 0;
}

.section-glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-cyan), var(--color-green), transparent);
  opacity: 0.3;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text);
  text-shadow: 0 0 20px rgba(0, 240, 255, 0.25);
}

.section-subtitle {
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  margin-top: 0.75rem;
  font-size: 1.05rem;
  letter-spacing: 0.05em;
}

.separator {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-green));
  margin: 1.5rem auto 0;
  border-radius: 2px;
  box-shadow: 0 0 20px var(--color-cyan-dim);
}

/* === ANIMATIONS === */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-line {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === NAVIGATION === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 2.5rem;
  background: rgba(3, 5, 8, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-cyan-dim);
  transition: padding 0.3s ease;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 2px;
  color: var(--color-text);
  text-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
}

.nav-brand:hover {
  color: var(--color-text);
}

.logo-icon {
  color: var(--color-cyan);
  font-size: 1.5rem;
  line-height: 1;
}

.logo-accent {
  color: var(--color-green);
  margin-left: 0.25rem;
}

.nav-menu {
  display: flex;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-green));
  transition: width 0.3s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-cyan);
  border-radius: 1px;
  transition: 0.3s ease;
}

.hamburger {
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.hamburger.open {
  background: transparent;
}

.hamburger.open::before {
  transform: rotate(45deg);
  top: 0;
}

.hamburger.open::after {
  transform: rotate(-45deg);
  top: 0;
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 8rem 2rem 4rem;
}

.network-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.7;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-subtitle {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  color: var(--color-green);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: inline-block;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--color-green-dim);
  background: rgba(0, 255, 65, 0.05);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
  color: var(--color-text);
  text-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
}

.text-glow {
  color: var(--color-cyan);
  text-shadow: 0 0 40px rgba(0, 240, 255, 0.45), 0 0 80px rgba(0, 240, 255, 0.25);
}

.hero-desc {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.1rem 2.75rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(90deg, var(--color-cyan), var(--color-green));
  color: #000;
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(0, 255, 65, 0.4);
  filter: brightness(1.15);
}

.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-cyan), transparent);
  animation: float 2s ease-in-out infinite;
}

/* === ABOUT === */
.about {
  background: linear-gradient(to bottom, var(--color-bg), var(--color-bg-alt));
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.about-card {
  padding: 2.5rem 2rem;
  border-radius: 4px;
  transition: var(--transition);
}

.about-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 240, 255, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 240, 255, 0.08);
}

.about-card .card-icon {
  width: 44px;
  height: 44px;
  color: var(--color-cyan);
  margin-bottom: 1.5rem;
}

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

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

/* === PROGRAMS === */
.programs {
  background: var(--color-bg-alt);
}

.programs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.program-card {
  padding: 2.5rem 2rem;
  border-radius: 4px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.program-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.05), transparent);
  transition: left 0.6s ease;
}

.program-card:hover::before {
  left: 100%;
}

.program-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 240, 255, 0.35);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), 0 0 25px rgba(0, 255, 65, 0.05);
}

.program-card .card-icon {
  width: 40px;
  height: 40px;
  color: var(--color-green);
  margin-bottom: 1.5rem;
}

.program-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

/* === CYBER LAB === */
.cyber-lab {
  background: linear-gradient(to bottom, var(--color-bg-alt), var(--color-bg));
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.lab-card {
  padding: 0;
  border-radius: 4px;
  overflow: hidden;
  transition: var(--transition);
}

.lab-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: rgba(0, 255, 65, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 255, 65, 0.08);
}

.lab-header {
  padding: 1.75rem 2rem;
  background: rgba(0, 240, 255, 0.04);
  border-bottom: 1px solid var(--color-cyan-dim);
}

.lab-header h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.lab-platform {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-cyan);
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--color-cyan-dim);
  background: rgba(0, 240, 255, 0.05);
  border-radius: 2px;
}

.lab-body {
  padding: 1.75rem 2rem;
}

.lab-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.lab-features {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.lab-features li {
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text);
}

.lab-features li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-green);
  font-weight: 700;
}

/* === CONTACT === */
.contact {
  background: var(--color-bg);
  padding-bottom: 4rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-form {
  padding: 2.5rem;
  border-radius: 4px;
}

.form-group {
  position: relative;
  margin-bottom: 1.75rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--color-cyan-dim);
  border-radius: 2px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-cyan);
  box-shadow: 0 0 20px rgba(0, 240, 255, 0.15);
}

.form-group label {
  position: absolute;
  left: 1.25rem;
  top: 1rem;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: 0.25s ease all;
  font-size: 0.95rem;
}

.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
  top: -0.55rem;
  left: 0.75rem;
  font-size: 0.75rem;
  color: var(--color-cyan);
  background: var(--color-bg);
  padding: 0 0.5rem;
}

.btn-submit {
  width: 100%;
  background: transparent;
  border: 1px solid var(--color-cyan);
  color: var(--color-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.1);
}

.btn-submit:hover {
  background: var(--color-cyan);
  color: #000;
  box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
}

.contact-info {
  padding: 2.5rem;
  border-radius: 4px;
}

.contact-info h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
  color: var(--color-text);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.info-item .icon {
  width: 24px;
  height: 24px;
  color: var(--color-green);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.info-item h4 {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-green);
  margin-bottom: 0.25rem;
}

.info-item p,
.info-item a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.info-item a:hover {
  color: var(--color-cyan);
}

/* === FOOTER === */
.site-footer {
  text-align: center;
  padding: 2.5rem 1rem;
  border-top: 1px solid var(--color-cyan-dim);
  background: rgba(3, 5, 8, 0.8);
}

.site-footer p {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 1rem 1.5rem;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 300px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 6rem 2rem 2rem;
    background: rgba(3, 5, 8, 0.95);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--color-cyan-dim);
    transition: right 0.35s ease;
    z-index: 999;
  }

  .nav-menu.open {
    right: 0;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }

  .nav-toggle {
    display: block;
  }

  body.menu-open .network-bg,
  body.menu-open .hero-content {
    filter: blur(3px);
  }

  .about-grid,
  .programs-grid {
    grid-template-columns: 1fr;
  }

  .lab-grid {
    grid-template-columns: 1fr;
  }

  .section-glow {
    padding: 4rem 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.25rem;
  }

  .btn {
    width: 100%;
  }

  .contact-form,
  .contact-info {
    padding: 1.75rem;
  }
}