@font-face {
  font-family: 'CooperArabic';
  src: url('fonts/CooperArabic.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'Almarai';
  src: url('fonts/Almarai-Regular.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}

:root {
  --primary-color: #4a6bff;
  --secondary-color: #ff6b6b;
  --dark-color: #2c3e50;
  --light-color: #f8f9fa;
  --accent-color: #6c5ce7;
}

html {
  height: 100%;
}

.Almarai {
  font-family: Almarai,sans-serif;
}

body {
  background: #f0f2f5;
  font-family: Almarai,sans-serif;
  color: black;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.main-content {
  flex: 1; /* This makes sure the content takes up the available space */
}
.text-header{
    background: white;
    -webkit-text-fill-color: transparent;
    -webkit-background-clip: text;
    padding-top: 20px;
    padding-bottom: 20px;
}
  /* Navigation Indicators */
  #indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
  }

  .indicator {
    width: 10px;
    height: 10px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .indicator.active {
    width: 14px;
    height: 14px;
    background-color: white;
  }

.font-cop {
    font-family: CooperArabic,sans-serif;
}

@keyframes wormMove {
  0% {
      height: 2px;
      right: 10px;
      width: 50px
  }

  10% {
      height: 2px;
      right: 30px;
      width: 100px
  }

  20% {
      height: 2px;
      right: 70px;
      width: 70px
  }

  30% {
      height: 2px;
      right: 80px;
      width: 120px
  }

  40% {
      height: 2px;
      right: 150px;
      width: 50px
  }

  50% {
      height: 2px;
      right: 160px;
      width: 100px
  }

  60% {
      height: 2px;
      right: 110px;
      width: 140px
  }

  70% {
      height: 2px;
      right: 100px;
      width: 70px
  }

  80% {
      height: 2px;
      right: 110px;
      width: 100px
  }
}

.login-btn, .register-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #2d6488;
    color: white;
    border: 2px solid transparent;
    border-radius: 60px;
    padding: 10px 20px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    margin: 0 5px;
}

/* Responsive adjustments for login/register buttons */
@media (max-width: 576px) {
    .login-btn, .register-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
        margin: 0 2px;
    }
    
    .arrow-icon {
        margin-right: 3px;
    }
    
    .arrow-icon svg {
        width: 18px;
        height: 18px;
    }
    
    .btn-text {
        gap: 4px;
    }
    
    .fixed-top .container {
        padding-left: 5px;
        padding-right: 5px;
    }
    
    .fixed-top {
        padding: 8px 0 !important;
    }
    
    .fixed-top .container img {
        max-width: 50px !important;
    }
    
    /* Improved navbar layout for mobile */
    .fixed-top .container {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .fixed-top .container > a {
        margin-bottom: 8px;
    }
    
    .fixed-top .d-flex.align-items-center {
        justify-content: center;
    }
    
    /* Adjust content margin to account for taller navbar */
    .container.mt-4 {
        margin-top: 120px !important;
    }
    
    /* Adjust alert messages margin */
    .container.mt-3 {
        margin-top: 110px !important;
    }
}

.register-btn {
    background: #2d6488;
    box-shadow: 0 8px 25px rgba(245, 87, 108, 0.3);
}

.login-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
    background: #e2581f;
    border-color: rgba(255, 255, 255, 0.2);
}

.register-btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(245, 87, 108, 0.4);
    background: #e2581f;
    border-color: rgba(255, 255, 255, 0.2);
}

.login-btn:active, .register-btn:active {
    transform: translateY(-1px) scale(1.02);
}
.btn-text {
  display: flex;
  gap: 8px;
}

.text-part-1 {
  color: white;
}

.text-part-2 {
  color: white;
}
.text-part-3 {
  color: white;
}

@media (max-width: 576px) {
  .fixed-top .container {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .fixed-top .d-flex.align-items-center {
    justify-content: center;
    /*margin-top: 5px;*/
  }
  
  .fixed-top .text-decoration-none {
    margin-bottom: 5px;
  }
}
.arrow-icon {
  margin-right: 8px;
  transition: all 0.3s ease;
  color: white;
}

.login-btn:hover .arrow-icon {
  transform: translateX(4px) rotate(180deg);
}
.virus-icon {
  transition: all 0.3s ease;
}
.login-btn2:hover .virus-icon {
  transform: rotate(180deg);
}
/* Ripple effect */
.login-btn::after, .register-btn::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%);
  transform-origin: 50% 50%;
}
.login-form-container {
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1050;
  backdrop-filter: blur(5px);
  animation: fadeIn 0.3s ease-out;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  transform: translateY(0);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
}

.login-header {
  color: white;
  padding: 1.5rem;
  text-align: center;
  position: relative;
}

.login-h {
  background: linear-gradient(135deg, #6bc7c8 0%, #1b8f65 100%);
}

.login-title {
  margin: 0;
  font-weight: 600;
  font-size: 1.5rem;
}

.login-icon {
  position: absolute;
  left: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.2);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-form {
  padding: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.input-group:focus-within {
  border-color: #28a745;
  box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.2);
}

.input-group-icon {
  padding: 0 12px;
  color: #6c757d;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8f9fa;
  height: 100%;
}

.form-control {
  flex: 1;
  padding: 12px;
  border: none;
  outline: none;
  background: transparent;
  font-size: 0.95rem;
}

.password-toggle {
  background: transparent;
  border: none;
  padding: 0 12px;
  cursor: pointer;
  color: #6c757d;
  transition: color 0.2s;
}

.password-toggle:hover {
  color: #28a745;
}

.input-hint {
  font-size: 0.75rem;
  color: #6c757d;
  margin-top: 4px;
  padding-left: 8px;
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 1rem 0;
}

.form-check {
  display: flex;
  align-items: center;
}

.form-check-input {
  margin-left: 8px;
  cursor: pointer;
}

.forgot-password {
  color: #28a745;
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.2s;
}

.forgot-password:hover {
  color: #1e7e34;
  text-decoration: underline;
}

.login-btn2 {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #6bc7c8 0%, #1b8f65 100%);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.3s ease;
  margin-top: 1rem;
}

.login-btn2:hover {
  background: linear-gradient(135deg, #1b8f65 0%, #025247 100%);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
}

.login-btn2:active {
  transform: translateY(0);
}
.login-btn:hover::after {
  animation: ripple 1s ease-out;
}
.register-btn:hover::after {
  animation: ripple 1s ease-in;
}
.login-footer {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: #6c757d;
}

.register-link {
  color: #28a745;
  text-decoration: none;
  font-weight: 600;
  margin-right: 5px;
  transition: color 0.2s;
}

.register-link:hover {
  color: #1e7e34;
  text-decoration: underline;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive adjustments */
@media (max-width: 576px) {
  .login-card {
      margin: 0 1rem;
  }

  .login-header {
      padding: 1rem;
  }

  .login-form {
      padding: 1rem;
  }
}

/* Password toggle functionality */
.password-toggle .hide-icon {
  display: none;
}

.password-toggle[aria-pressed="true"] .show-icon {
  display: none;
}

.password-toggle[aria-pressed="true"] .hide-icon {
  display: block;
}

@keyframes ripple {
  0% {
      transform: scale(0, 0);
      opacity: 0.5;
  }
  100% {
      transform: scale(20, 20);
      opacity: 0;
  }
}
.logout-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border: 1px solid #dc3545;
  color: #dc3545;
  border-radius: 5px;
  text-decoration: none;
  font-weight: bold;
  transition: all 0.3s;
}

.logout-btn:hover {
  background-color: #dc3545;
  color: white;
}

/* Teacher Dashboard */

.dashboard-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s;
}

.dashboard-btn i, .dashboard-btn span {
  font-size: 20px;
}

/* Upload Students Button */
.upload-btn {
  background-color: #007bff;
  border: 2px solid #007bff;
  color: white;
}

.upload-btn:hover {
  background-color: #0056b3;
  border-color: #0056b3;
}

/* Edit Students Button */
.edit-btn {
  background-color: #28a745;
  border: 2px solid #28a745;
  color: white;
}

.edit-btn:hover {
  background-color: #218838;
  border-color: #218838;
}

/* Create Exam Button */
.create-exam-btn {
  background-color: #ffc107;
  border: 2px solid #ffc107;
  color: white;
}

.create-exam-btn:hover {
  background-color: #e0a800;
  border-color: #e0a800;
}

/* View Exams Button */
.view-exams-btn {
  background-color: #17a2b8;
  border: 2px solid #17a2b8;
  color: white;
}

.view-exams-btn:hover {
  background-color: #138496;
  border-color: #138496;
}
body, html {
  margin: 0;
  padding: 0;
}
.carousel-caption {
  position: absolute;
  bottom: 35px;
  background-color: #5a6583;
  border-radius: 1rem;  /* Adjust for larger/smaller border radius */
  padding: 1rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.mt-12 {
  margin-top: 8rem;
}
.price-tag {
  background: linear-gradient(135deg, #ff7e29, #ffbe3e);
  color: white;
  padding: 8px 20px;
  border-radius: 20px;
  margin-top: 10px;
}

#carouselExampleIndicators {
  /* Default (Mobile-first) */
  width: 100%;      /* Full width on small screens */
  max-width: 420px; /* Limits expansion */
  height: 450px;    /* Adjust height proportionally */
  margin: 0 auto;   /* Center the carousel */
  overflow: hidden;

  aspect-ratio: 3/2; /* Optional: Enforce aspect ratio (e.g., 3:2) */
  /* Large screens (desktops) */
  /* Medium screens (tablets) */
  @media (min-width: 768px) {
    max-width: 360px;
  }
  @media (min-width: 1000px) {
    max-width: 480px;
  }
  @media (min-width: 1200px) {
    max-width: 570px;
  }
  @media (min-width: 1400px) {
    max-width: 660px;
  }
}

#carouselExampleIndicators .carousel-inner {
  height: 100%;
}

#carouselExampleIndicators .carousel-item {
  height: 100%;
}

#carouselExampleIndicators .carousel-item img {
  top: 0;
  left: 0;
  object-fit: cover;  /* Ensures images fill the height without distortion */
  height: 100%;
  width: 100%;
  position: absolute;
}

.material-symbols-outlined {
  vertical-align: middle;
  font-size: 1.2em; /* Adjust size if needed */
}
.welcome-message {
  font-weight: bold;
  white-space: nowrap; /* Prevent text from wrapping */
  overflow: hidden; /* Hide overflow */
  text-overflow: ellipsis; /* Add ellipsis for truncated text */
  position: relative;
  padding-right: 15px;
  max-width: 150px; /* Adjust this value based on your design */
}
.welcome-message::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 60%;
  width: 3px;
  background: var(--primary-color);
  border-radius: 3px;
}
.btn-danger {
  background: var(--secondary-color);
  border: none;
  border-radius: 50px;
  padding: 10px 25px;
  transition: all 0.3s ease;
}
.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: 30px;
}
.hero-section {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
}

.hero-section::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgb(45 154 0 / 10%) 0%, rgba(255, 255, 255, 0) 70%);
  z-index: -1;
  animation: rotate 15s linear infinite;
}

@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.bg-glass {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
}
.section-title::after {
  content: "";
  position: absolute;
  bottom: -10px;
  right: 0;
  width: 50%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), transparent);
  border-radius: 3px;
}
.btn-danger:hover {
  background: #e05555;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(255, 107, 107, 0.3);
}
.waves {
  position:relative;
  width: 100%;
  height:15vh;
  margin-bottom:-7px; /*Fix for safari gap*/
  min-height:100px;
  max-height:150px;
}
/* Footer Social Links */
.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: white !important;
    text-decoration: none !important;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.social-link:hover {
    transform: translateY(-2px);
    text-decoration: none !important;
}

.telegram-link {
    background: linear-gradient(135deg, #0088cc, #34b7f1);
}

.telegram-link:hover {
    background: linear-gradient(135deg, #0077b5, #2aa8e0);
    box-shadow: 0 4px 15px rgba(0, 136, 204, 0.3);
}

/* Make sure icons are properly sized */
.social-link i {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.social-link:hover i {
    transform: scale(1.2);
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .social-link {
        padding: 4px 8px;
        font-size: 0.9rem;
    }
    
    .social-link i {
        font-size: 1.1rem;
    }
    
    .footer-content .mb-3 {
        margin-bottom: 1rem !important;
    }
}
/* Optional: Telegram icon animation */
.telegram-link i {
    animation: telegramPulse 2s infinite;
}

@keyframes telegramPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}
.content {
  position:relative;
  height:20vh;
  text-align:center;
  background-color: white;
}

/* Animation */

.parallax > use {
  animation: move-forever 25s cubic-bezier(.55,.5,.45,.5)     infinite;
}
.parallax > use:nth-child(1) {
  animation-delay: -2s;
  animation-duration: 7s;
}
.parallax > use:nth-child(2) {
  animation-delay: -3s;
  animation-duration: 10s;
}
.parallax > use:nth-child(3) {
  animation-delay: -4s;
  animation-duration: 13s;
}
.parallax > use:nth-child(4) {
  animation-delay: -5s;
  animation-duration: 20s;
}
@keyframes move-forever {
  0% {
   transform: translate3d(-90px,0,0);
  }
  100% {
    transform: translate3d(85px,0,0);
  }
}
/*Shrinking for mobile*/
@media (max-width: 768px) {
  .waves {
    height:40px;
    min-height:40px;
  }
  .content {
    height:30vh;
  }
  h1 {
    font-size:24px;
  }
}
.footer-with-waves, .footer-with-wave {
  margin-top: auto;
  width: 100%;
  position: relative;
}

.carousle-button, .carousel-indicators {
  filter: invert(100%);
}
/* Fix for AOS horizontal animations on mobile */
[data-aos] {
  overflow: hidden !important;
}

[data-aos^='fade'][data-aos^='fade'] {
  will-change: opacity, transform;
  backface-visibility: hidden;
}

.gear-animation {
  position: absolute;
  top: 20%;
  right: 20%;
  width: 120px;
  height: 120px;
  z-index: 0;
  opacity: 0.15;
  animation: gearRotate 8s linear infinite;
  transform-origin: 50% 50%;
}

@keyframes gearRotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.circuit-animation {
  position: absolute;
  bottom: -90%;
  left: 20%;
  @media (min-width: 768px) {
    bottom: 10%;
    left: 60%;
  }
  @media (min-width: 1000px) {
    bottom: 0;
  }
  @media (min-width: 1200px) {
    bottom: -70%;
  }
  @media (min-width: 1400px) {
    bottom: -70%;
  }
  width: 120px;
  height: 120px;
  z-index: 0;
  opacity: 0.5;
  animation: circuitPulse 3s ease-in-out infinite;
}

@keyframes circuitPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

.mechanical-animation {
  position: absolute;
  bottom: -90%;
  left: 20%;
  @media (min-width: 768px) {
    bottom: 10%;
    left: 60%;
  }
  @media (min-width: 1000px) {
    bottom: 0;
  }
  @media (min-width: 1200px) {
    bottom: -70%;
  }
  @media (min-width: 1400px) {
    bottom: -70%;
  }
  width: 80px;
  height: 80px;
  z-index: 0;
  opacity: 0.5;
  animation: mechanicalFloat 14s ease-in-out infinite;
  transform-style: preserve-3d;
}

/* Chemistry Animations */
.atom-animation {
  position: absolute;
  top: 30%;
  left: 15%;
  width: 100px;
  height: 100px;
  z-index: 0;
  animation: atomSpin 10s linear infinite;
}

.molecule-animation {
  position: absolute;
  top: 60%;
  right: 30%;
  width: 140px;
  height: 60px;
  z-index: 0;
  opacity: 0.7;
}

.flask-animation {
  position: absolute;
  width: 100px;
  height: 100px;
  right: 25%;
  bottom: -190%;
  @media (min-width: 768px) {
    bottom: -200%;
    right: 35%;
  }
  @media (min-width: 1200px) {
    bottom: -105%;
  }
  z-index: 0;
  opacity: 0.8;
  animation: chemicalReaction 4s ease-in-out infinite;
}

@keyframes atomSpin {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.05); }
  100% { transform: rotate(360deg) scale(1); }
}

@keyframes chemicalReaction {
  0%, 100% { transform: translateY(0) scale(1); }
  25% { transform: translateY(-5px) scale(1.02); }
  50% { transform: translateY(0) scale(1.05); }
  75% { transform: translateY(5px) scale(1.02); }
}

/* Circuit animation for chemistry experiment */
.circuit-animation {
  position: absolute;
  bottom: -90%;
  left: 20%;
  @media (min-width: 768px) {
    bottom: 10%;
    left: 60%;
  }
  @media (min-width: 1000px) {
    bottom: 0;
  }
  @media (min-width: 1200px) {
    bottom: -70%;
  }
  @media (min-width: 1400px) {
    bottom: -70%;
  }
  width: 120px;
  height: 120px;
  z-index: 0;
  opacity: 0.5;
  animation: experimentPulse 3s ease-in-out infinite;
}

@keyframes experimentPulse {
  0%, 100% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

/* Chemistry Floating Elements - Vertical Loop Animation */
.chemistry-floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 3;
    overflow: hidden;
}

.chemistry-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    pointer-events: auto;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    transition: all 0.3s ease;
    cursor: pointer;
    opacity: 0;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
}

.chemistry-element:hover {
    transform: scale(1.3) !important;
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.25);
    z-index: 10;
}

.element-tooltip {
    position: absolute;
    bottom: -35px;
    background: linear-gradient(135deg, rgba(74, 107, 255, 0.9), rgba(108, 92, 231, 0.9));
    color: white;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    opacity: 0;
    transform: translateY(10px) scale(0.9);
    transition: all 0.3s ease;
    white-space: nowrap;
    pointer-events: none;
    font-family: 'Almarai', sans-serif;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.chemistry-element:hover .element-tooltip {
    opacity: 1;
    transform: translateY(0) scale(1);
    bottom: -40px;
}

/* Individual element positions and vertical loop animations */
.chemistry-element.element-1 {
    right: 10%;
    animation: floatDownUp1 20s infinite linear;
    background: linear-gradient(135deg, rgba(229, 62, 62, 0.4), rgba(229, 62, 62, 0.2));
    border: 2px solid rgba(229, 62, 62, 0.5);
}

.chemistry-element.element-2 {
    left: 15%;
    animation: floatDownUp2 25s infinite linear;
    animation-delay: 2s;
    background: linear-gradient(135deg, rgba(66, 153, 225, 0.4), rgba(66, 153, 225, 0.2));
    border: 2px solid rgba(66, 153, 225, 0.5);
}

.chemistry-element.element-3 {
    right: 20%;
    animation: floatDownUp3 22s infinite linear;
    animation-delay: 4s;
    background: linear-gradient(135deg, rgba(72, 187, 120, 0.4), rgba(72, 187, 120, 0.2));
    border: 2px solid rgba(72, 187, 120, 0.5);
}

.chemistry-element.element-4 {
    left: 25%;
    animation: floatDownUp4 18s infinite linear;
    animation-delay: 6s;
    background: linear-gradient(135deg, rgba(237, 137, 54, 0.4), rgba(237, 137, 54, 0.2));
    border: 2px solid rgba(237, 137, 54, 0.5);
}

.chemistry-element.element-5 {
    left: 30%;
    animation: floatDownUp5 30s infinite linear;
    animation-delay: 1s;
    background: linear-gradient(135deg, rgba(236, 201, 75, 0.4), rgba(236, 201, 75, 0.2));
    border: 2px solid rgba(236, 201, 75, 0.5);
}

.chemistry-element.element-6 {
    right: 35%;
    animation: floatDownUp6 28s infinite linear;
    animation-delay: 3s;
    background: linear-gradient(135deg, rgba(128, 90, 213, 0.4), rgba(128, 90, 213, 0.2));
    border: 2px solid rgba(128, 90, 213, 0.5);
}

.chemistry-element.element-7 {
    right: 5%;
    animation: floatDownUp7 24s infinite linear;
    animation-delay: 5s;
    background: linear-gradient(135deg, rgba(116, 185, 255, 0.4), rgba(116, 185, 255, 0.2));
    border: 2px solid rgba(116, 185, 255, 0.5);
}

.chemistry-element.element-8 {
    left: 5%;
    animation: floatDownUp8 26s infinite linear;
    animation-delay: 7s;
    background: linear-gradient(135deg, rgba(56, 178, 172, 0.4), rgba(56, 178, 172, 0.2));
    border: 2px solid rgba(56, 178, 172, 0.5);
}

/* Vertical Loop Animations - Start from top, go to bottom, restart */
@keyframes floatDownUp1 {
    0% {
        top: -50px;
        opacity: 0;
        transform: scale(0.8) rotate(0deg);
    }
    10% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    50% {
        top: 50%;
        transform: scale(1.1) rotate(180deg);
    }
    90% {
        opacity: 1;
        transform: scale(1) rotate(360deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.8) rotate(360deg);
    }
}

@keyframes floatDownUp2 {
    0% {
        top: -60px;
        opacity: 0;
        transform: scale(0.7) rotate(0deg);
    }
    15% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    60% {
        top: 60%;
        transform: scale(1.2) rotate(240deg);
    }
    85% {
        opacity: 1;
        transform: scale(1) rotate(480deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.7) rotate(480deg);
    }
}

@keyframes floatDownUp3 {
    0% {
        top: -40px;
        opacity: 0;
        transform: scale(0.9) rotate(0deg);
    }
    12% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    55% {
        top: 55%;
        transform: scale(1.15) rotate(220deg);
    }
    88% {
        opacity: 1;
        transform: scale(1) rotate(440deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.9) rotate(440deg);
    }
}

@keyframes floatDownUp4 {
    0% {
        top: -55px;
        opacity: 0;
        transform: scale(0.75) rotate(0deg);
    }
    20% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    70% {
        top: 70%;
        transform: scale(1.25) rotate(280deg);
    }
    95% {
        opacity: 1;
        transform: scale(1) rotate(560deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.75) rotate(560deg);
    }
}

@keyframes floatDownUp5 {
    0% {
        top: -45px;
        opacity: 0;
        transform: scale(0.85) rotate(0deg);
    }
    8% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    45% {
        top: 45%;
        transform: scale(1.1) rotate(160deg);
    }
    92% {
        opacity: 1;
        transform: scale(1) rotate(320deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.85) rotate(320deg);
    }
}

@keyframes floatDownUp6 {
    0% {
        top: -65px;
        opacity: 0;
        transform: scale(0.65) rotate(0deg);
    }
    18% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    65% {
        top: 65%;
        transform: scale(1.3) rotate(260deg);
    }
    92% {
        opacity: 1;
        transform: scale(1) rotate(520deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.65) rotate(520deg);
    }
}

@keyframes floatDownUp7 {
    0% {
        top: -48px;
        opacity: 0;
        transform: scale(0.82) rotate(0deg);
    }
    14% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    58% {
        top: 58%;
        transform: scale(1.18) rotate(210deg);
    }
    91% {
        opacity: 1;
        transform: scale(1) rotate(420deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.82) rotate(420deg);
    }
}

@keyframes floatDownUp8 {
    0% {
        top: -52px;
        opacity: 0;
        transform: scale(0.78) rotate(0deg);
    }
    16% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    62% {
        top: 62%;
        transform: scale(1.22) rotate(250deg);
    }
    94% {
        opacity: 1;
        transform: scale(1) rotate(500deg);
    }
    100% {
        top: 100%;
        opacity: 0;
        transform: scale(0.78) rotate(500deg);
    }
}

/* Make sure Image Section has relative positioning */
.col-lg-6:has(.chemistry-floating-elements) {
    position: relative;
}

.hero-image-container {
    position: relative;
    z-index: 2;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .chemistry-element {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .element-tooltip {
        font-size: 0.7rem;
        padding: 4px 8px;
        bottom: -30px;
    }
    
    .chemistry-element:hover .element-tooltip {
        bottom: -32px;
    }
    
    /* Adjust animation speeds for mobile */
    .chemistry-element.element-1 { animation-duration: 15s; }
    .chemistry-element.element-2 { animation-duration: 18s; }
    .chemistry-element.element-3 { animation-duration: 16s; }
    .chemistry-element.element-4 { animation-duration: 12s; }
    .chemistry-element.element-5 { animation-duration: 22s; }
    .chemistry-element.element-6 { animation-duration: 20s; }
    .chemistry-element.element-7 { animation-duration: 17s; }
    .chemistry-element.element-8 { animation-duration: 19s; }
}

@media (max-width: 576px) {
    .chemistry-element {
        width: 30px;
        height: 30px;
        font-size: 0.8rem;
    }
    
    .chemistry-element:hover {
        transform: scale(1.2) !important;
    }
}

/* Optional: Add glow effect on hover */
.chemistry-element:hover::after {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    z-index: -1;
    animation: glowPulse 1.5s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.1); }
}

/* Price badge for course ads in carousel */
.price-badge {
    background: linear-gradient(45deg, #28a745, #20c997);
    color: white !important;
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: bold;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 5px;
}

.price-badge i {
    font-size: 0.8rem;
}

/* ========================================
   GLOBAL STYLES FOR ALL PAGES
   ======================================== */

/* Custom Scrollbar - Works on all pages */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(267deg, #eb9c23 0%, #e76d24 50%, #409cc0 100%);;
    border-radius: 4px;
    transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(267deg, #eb9c23 0%, #e76d24 50%, #409cc0 100%);;
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: #e2581f #f1f1f1;
}

/* Loading States - Works on all pages */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Global Focus Styles for Accessibility */
.btn:focus,
button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
    outline: none;
    box-shadow: none;
}

/* Smooth Transitions - Global */
* {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease,
                box-shadow 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
}

/* Disable transitions during page load */
.preload * {
    transition: none !important;
}

/* Global Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

.scale-in {
    animation: scaleIn 0.3s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Global Print Styles */
@media print {
    .no-print,
    .navbar,
    .footer,
    .btn,
    .floating-element,
    .carousel-overlay,
    .decoration-icon {
        display: none !important;
    }

    body {
        background: white !important;
        color: black !important;
        font-size: 12pt;
        line-height: 1.4;
    }

    .container {
        max-width: none !important;
        padding: 0 !important;
    }

    h1, h2, h3, h4, h5, h6 {
        color: black !important;
        page-break-after: avoid;
    }

    p, li {
        orphans: 3;
        widows: 3;
    }
}

/* Global Utility Classes */
.text-gradient {
    background: linear-gradient(267deg, #eb9c23 0%, #e76d24 50%, #409cc0 100%);;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-modern {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.shadow-modern-hover:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box,
                linear-gradient(267deg, #eb9c23 0%, #e76d24 50%, #409cc0 100%);
}

/* Global Responsive Utilities */
@media (max-width: 576px) {
    .hide-mobile {
        display: none !important;
    }
}

@media (min-width: 577px) {
    .show-mobile-only {
        display: none !important;
    }
}

@media (max-width: 768px) {
    .hide-tablet {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .show-tablet-only {
        display: none !important;
    }
}

/* ========================================
   BACK BUTTON STYLES - GLOBAL
   ======================================== */

/* Back button styles for consistent navigation */
.back-btn {
    color: #007bff;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
}

.back-btn:hover {
    color: #0056b3;
    transform: translateY(-1px);
}

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