/* ==========================================
   1. VARIABLES & RESET
   ========================================== */
:root {
  --bg: #05070a;
  --surface: rgba(20, 25, 35, 0.6);
  --accent-green: #00ff9d;
  --accent-blue: #00d2ff;
  --text-primary: #e6f1ff;
  --text-secondary: #94a3b8;
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-glow-green: 0 0 20px rgba(0, 255, 157, 0.3);
  --font-heading: 'Orbitron', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

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

ul { list-style: none; }

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

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* ==========================================
   2. TYPOGRAPHY
   ========================================== */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(90deg, var(--text-primary), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.text-accent {
  color: var(--accent-green);
  text-shadow: 0 0 15px rgba(0,255,157,0.4);
}

/* ==========================================
   3. NAVIGATION
   ========================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.2rem 0;
  background: rgba(5, 7, 10, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  transition: background 0.3s, padding 0.3s;
}

.header.scrolled {
  padding: 0.8rem 0;
  background: rgba(5, 7, 10, 0.9);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.3rem;
  letter-spacing: 0.05em;
}

.logo__icon {
  font-size: 1.6rem;
  color: var(--accent-green);
  text-shadow: 0 0 10px rgba(0,255,157,0.5);
}

.logo__accent {
  color: var(--accent-blue);
}

.nav__list {
  display: flex;
  gap: 2.5rem;
}

.nav__link {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  position: relative;
  transition: color 0.3s;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transition: width 0.3s;
}

.nav__link:hover {
  color: var(--text-primary);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  z-index: 1100;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  background: var(--text-primary);
  height: 2px;
  width: 24px;
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger {
  position: relative;
}

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

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

.nav__toggle.active .hamburger { background: transparent; }
.nav__toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
.nav__toggle.active .hamburger::after { transform: rotate(-45deg); top: 0; }

/* ==========================================
   4. HERO
   ========================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 8rem 0 4rem;
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, transparent 0%, var(--bg) 90%);
  z-index: 1;
  pointer-events: none;
}

.hero__content {
  text-align: center;
  z-index: 2;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.hero__title-line {
  display: block;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: none;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
  color: #000;
  border-radius: 4px;
}

.btn--glow:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(0, 255, 157, 0.4), 0 0 60px rgba(0, 210, 255, 0.2);
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.mouse {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-secondary);
  border-radius: 12px;
  position: relative;
}

.mouse::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
  background: var(--accent-green);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translate(-50%, 0); }
  100% { opacity: 0; transform: translate(-50%, 12px); }
}

/* ==========================================
   5. ABOUT
   ========================================== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about__heading {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--accent-blue);
}

.about__content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.about__features li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
}

.about__features li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-weight: 700;
  font-size: 1.2rem;
}

.about__visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.holo-shield {
  position: relative;
  width: 280px;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.holo-shield__ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--accent-green);
  box-shadow: 0 0 15px rgba(0, 255, 157, 0.2), inset 0 0 20px rgba(0, 255, 157, 0.1);
  animation: rotateRing 10s linear infinite;
}

.holo-shield__ring:nth-child(1) {
  width: 100%;
  height: 100%;
  border-top-color: var(--accent-blue);
  border-bottom-color: var(--accent-blue);
  animation-duration: 12s;
}

.holo-shield__ring:nth-child(2) {
  width: 70%;
  height: 70%;
  border-left-color: var(--accent-blue);
  border-right-color: var(--accent-blue);
  animation-direction: reverse;
  animation-duration: 8s;
}

.holo-shield__core {
  width: 30%;
  height: 30%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-green), transparent 70%);
  box-shadow: 0 0 30px var(--accent-green);
  animation: pulseCore 3s ease-in-out infinite;
}

@keyframes rotateRing {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes pulseCore {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.2); opacity: 1; }
}

/* ==========================================
   6. PROGRAMS
   ========================================== */
.programs {
  background: linear-gradient(180deg, var(--bg) 0%, #0a1018 50%, var(--bg) 100%);
}

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

.program-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.program-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(0,255,157,0.05), rgba(0,210,255,0.05));
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

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

.program-card:hover {
  transform: translateY(-10px);
  border-color: rgba(0, 255, 157, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), var(--shadow-glow-green);
}

.program-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1.5rem;
  color: var(--accent-green);
}

.program-card__icon svg {
  width: 100%;
  height: 100%;
}

.program-card__title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.program-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.program-card__link {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-blue);
}

/* ==========================================
   7. CYBER LAB
   ========================================== */
.lab-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.lab-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  aspect-ratio: 4/3;
  border: 1px solid var(--glass-border);
  cursor: pointer;
}

.lab-item__image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.5s;
}

.lab-item:hover .lab-item__image {
  transform: scale(1.1);
}

.lab-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(5,7,10,0.95) 0%, rgba(5,7,10,0.4) 60%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s, transform 0.4s;
}

.lab-item:hover .lab-item__overlay {
  opacity: 1;
  transform: translateY(0);
}

.lab-item__overlay h4 {
  font-family: var(--font-heading);
  color: var(--accent-green);
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.lab-item__overlay p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

@media (hover: none) {
  .lab-item__overlay {
    opacity: 1;
    transform: translateY(0);
    background: linear-gradient(0deg, rgba(5,7,10,0.95) 0%, rgba(5,7,10,0.7) 40%, rgba(5,7,10,0.2) 100%);
  }
}

/* ==========================================
   8. CONTACTS
   ========================================== */
.contacts {
  background: #080b10;
}

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

.contact-card {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  backdrop-filter: blur(10px);
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.contact-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 0 30px rgba(0,210,255,0.15);
}

.contact-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 1rem;
  color: var(--accent-blue);
}

.contact-card__icon svg {
  width: 100%;
  height: 100%;
}

.contact-card h4 {
  font-family: var(--font-heading);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.contact-card a,
.contact-card address {
  color: var(--text-secondary);
  font-style: normal;
  font-size: 0.95rem;
  transition: color 0.3s;
}

.contact-card a:hover {
  color: var(--accent-green);
}

/* ==========================================
   9. FOOTER
   ========================================== */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 3rem 0 2rem;
  background: #040608;
}

.footer__grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.footer__brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

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

.footer__links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color 0.3s;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer__bottom {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-top: 1px solid var(--glass-border);
  padding-top: 2rem;
}

/* ==========================================
   10. ANIMATIONS & UTILITIES
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   11. RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
  .programs__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .lab-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .holo-shield {
    width: 220px;
    height: 220px;
  }
  .nav__toggle {
    display: block;
  }
  .nav__list {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: 100vh;
    background: rgba(5, 7, 10, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: right 0.4s;
    border-left: 1px solid var(--glass-border);
  }
  .nav__list.active {
    right: 0;
  }
}

@media (max-width: 640px) {
  .programs__grid {
    grid-template-columns: 1fr;
  }
  .lab-gallery {
    grid-template-columns: 1fr;
  }
  .contacts__grid {
    grid-template-columns: 1fr;
  }
  .footer__grid {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }
  .hero__title {
    font-size: 1.8rem;
  }
}