/* ============================================
   Landing Page — Green & Black Hero
   ============================================ */

.landing-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: var(--black-bg);
}

/* Animated background grid */
.landing-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.landing-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 200, 83, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 200, 83, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 80%);
}

.landing-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float 8s ease-in-out infinite;
}

.landing-glow-1 {
  width: 400px;
  height: 400px;
  background: rgba(0, 200, 83, 0.12);
  top: 10%;
  left: 15%;
  animation-delay: 0s;
}

.landing-glow-2 {
  width: 300px;
  height: 300px;
  background: rgba(0, 168, 68, 0.08);
  bottom: 15%;
  right: 10%;
  animation-delay: -4s;
}

.landing-glow-3 {
  width: 200px;
  height: 200px;
  background: rgba(105, 240, 174, 0.06);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -2s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(20px, -30px) scale(1.05); }
  66% { transform: translate(-15px, 20px) scale(0.95); }
}

/* Floating particles */
.particles {
  position: absolute;
  inset: 0;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--green-primary);
  border-radius: 50%;
  opacity: 0.3;
  animation: particle-float 6s ease-in-out infinite;
}

.particle:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { top: 60%; left: 85%; animation-delay: 1s; }
.particle:nth-child(3) { top: 80%; left: 25%; animation-delay: 2s; }
.particle:nth-child(4) { top: 30%; left: 70%; animation-delay: 3s; }
.particle:nth-child(5) { top: 45%; left: 50%; animation-delay: 1.5s; }
.particle:nth-child(6) { top: 15%; left: 60%; animation-delay: 2.5s; }

@keyframes particle-float {
  0%, 100% { transform: translateY(0); opacity: 0.3; }
  50% { transform: translateY(-20px); opacity: 0.6; }
}

/* Main content */
.landing-content {
  position: relative;
  z-index: 10;
  text-align: center;
  padding: 2rem;
  max-width: 700px;
  animation: fadeUp 1s ease-out;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Photo */
.landing-photo-wrapper {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 0 auto 2rem;
}

.landing-photo-ring {
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    var(--green-primary),
    var(--green-light),
    var(--green-dark),
    var(--green-primary)
  );
  animation: ring-rotate 4s linear infinite;
}

@keyframes ring-rotate {
  to { transform: rotate(360deg); }
}

.landing-photo {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--black-bg);
  background: var(--black-card);
}

.landing-photo-placeholder {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--black-card);
  border: 4px solid var(--black-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--green-primary);
  opacity: 0.5;
}

/* Typography */
.landing-greeting {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--green-primary);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 0.75rem;
}

.landing-name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 3.75rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 0.5rem;
}

.landing-name .highlight {
  background: linear-gradient(135deg, var(--green-primary), var(--green-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.landing-role {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  font-weight: 400;
}

.landing-institution {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

/* CTA Buttons */
.landing-cta {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green-primary), var(--green-dark));
  color: var(--black-bg);
  box-shadow: 0 4px 20px var(--green-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--green-glow);
}

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

.btn-outline:hover {
  background: rgba(0, 200, 83, 0.1);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--green-glow);
}

.btn svg {
  width: 18px;
  height: 18px;
}

/* Scroll indicator */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-hint .mouse {
  width: 22px;
  height: 34px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-hint .mouse::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 3px;
  height: 8px;
  background: var(--green-primary);
  border-radius: 2px;
  animation: scroll-dot 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

@keyframes scroll-dot {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 18px; }
}

/* Responsive */
@media (max-width: 480px) {
  .landing-photo-wrapper {
    width: 180px;
    height: 180px;
  }

  .landing-cta {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}