/* Active Tab Indicator */
.nav-link.active, .dropbtn.active {
  position: relative;
  color: white !important;
}

.nav-link.active::after, .dropbtn.active::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to right, var(--accent-green), var(--accent-blue));
  border-radius: 3px;
  animation: pulseIndicator 2s infinite;
}

@keyframes pulseIndicator {
  0% { opacity: 0.7; transform: scaleX(0.9); }
  50% { opacity: 1; transform: scaleX(1); }
  100% { opacity: 0.7; transform: scaleX(0.9); }
}

/* Special header colors for home/registration pages */
.home-header, .registration-header {
  background: rgba(10, 10, 15, 0.92) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

/* Google Form Container */
.google-form-container {
  max-width: 800px;
  margin: 40px auto;
  background: white;
  border-radius: 20px;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

.google-form-container iframe {
  width: 100%;
  height: 100vh;
  min-height: 1200px;
  border: none;
  display: block;
}

/* Page-specific backgrounds */
.home-section {
  background: linear-gradient(135deg, #f8f9ff 0%, #e6f0ff 100%) !important;
}

.registration-background {
  background: linear-gradient(135deg, #f0f9ff 0%, #e6f7ff 100%) !important;
  min-height: 100vh;
  padding-top: 140px;
}

/* Visibility fixes */
.header {
  color: white !important;
}

.nav-link, .dropbtn {
  color: rgba(255, 255, 255, 0.9) !important;
}

.nav-link:hover, .dropbtn:hover {
  color: white !important;
}

/* Header */
.header {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  padding: 10px 24px;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--border-radius);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 2000;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.22);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.header.scrolled {
  padding: 8px 20px;
  background: rgba(15, 15, 25, 0.92);
  transform: translateY(-3px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.28);
}

.header-inner {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-img {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-green);
  transition: all 0.3s ease;
}

.header.scrolled .logo-img {
  width: 40px;
  height: 40px;
}

.logo-text {
  color: var(--white);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(to right, var(--accent-green), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  overflow: hidden;
}

.logo-text::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, var(--accent-green), var(--accent-blue));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.4s ease;
}

.header:hover .logo-text::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.hamburger {
  display: none;
  font-size: 28px;
  color: var(--white);
  background: none;
  border: none;
  cursor: pointer;
  z-index: 2500;
  transition: all 0.2s ease;
}

.hamburger:active {
  transform: scale(0.9);
}

/* Page Content */
.page-content {
  padding-top: 140px;
  padding-bottom: 100px;
  min-height: 80vh;
}

/* Footer */
.footer-top {
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue), #00b8ff);
  background-size: 300% 300%;
  animation: gradientShift 10s ease infinite;
  width: 94%;
  margin: 70px auto 0 auto;
  padding: 50px 30px;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: 
    0 12px 35px rgba(0, 0, 0, 0.22),
    inset 0 0 30px rgba(255, 255, 255, 0.2);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.footer {
  width: 94%;
  margin: 30px auto 40px auto;
  background: rgba(15, 15, 25, 0.75);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  padding: 40px 35px;
  border-radius: var(--border-radius);
  color: var(--white);
  box-shadow: 
    0 15px 40px rgba(0, 0, 0, 0.35),
    inset 0 0 20px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 50px;
}

.footer-logo {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-green);
  transition: all 0.3s ease;
}

.footer-logo:hover {
  transform: scale(1.08) rotate(10deg);
  box-shadow: 0 0 0 8px rgba(0, 255, 180, 0.2);
}

.footer-left h3 {
  margin: 10px 0 0;
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(to right, var(--accent-green), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.footer-small-title {
  margin-top: 8px;
  opacity: 0.85;
  font-size: 17px;
  letter-spacing: 0.5px;
}

.footer-info {
  opacity: 0.9;
  margin: 6px 0;
  font-size: 16px;
  transition: all 0.25s ease;
}

.footer-info:hover {
  opacity: 1;
  color: var(--accent-blue);
}

.footer-col {
  min-width: 190px;
}

.footer-heading {
  font-size: 21px;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(to right, var(--accent-green), var(--accent-blue));
  border-radius: 3px;
}

.footer a {
  color: #ddd;
  transition: all 0.28s ease;
  display: block;
  margin: 8px 0;
  font-size: 17px;
  position: relative;
  padding-left: 12px;
  opacity: 0.9;
}

.footer a::before {
  content: '→';
  position: absolute;
  left: 0;
  opacity: 0;
  transition: all 0.25s ease;
}

.footer a:hover {
  color: var(--white);
  transform: translateX(5px);
  opacity: 1;
  padding-left: 20px;
}

.footer a:hover::before {
  opacity: 1;
  transform: translateX(-3px);
}

/* Responsive Layout */
@media (max-width: 880px) {
  .nav { display: none; }
  .hamburger { display: block; }
  .footer-inner { flex-direction: column; text-align: center; }
  .footer-col { min-width: 100%; margin-top: 25px; }
  
  .page-content {
    padding-top: 120px;
  }
}

@media (max-width: 550px) {
  .header {
    padding: 8px 16px;
  }
  
  .logo-text {
    font-size: 18px;
  }
  
  .page-content {
    padding-top: 100px;
    padding-bottom: 80px;
  }
}