/* Main CSS File for IIDM E-Learning Platform */
:root {
  --primary: #ffc107;
  --primary-dark: #e6ac00;
  --secondary: #3d4e81;
  --secondary-dark: #2c3a61;
  --text-dark: #333;
  --text-light: #f8f9fa;
  --gray-light: #f8f9fa;
  --gray: #e9ecef;
  --gray-dark: #6c757d;
  --success: #28a745;
  --info: #17a2b8;
  --warning: #ffc107;
  --danger: #dc3545;
  --font-primary: "Poppins", sans-serif;
  --font-secondary: "Roboto", sans-serif;
  --transition: all 0.3s ease;
  --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --border-radius: 8px;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--secondary);
}

h1 {
  font-size: 3.5rem;
}

h2 {
  font-size: 2.5rem;
}

h3 {
  font-size: 2rem;
}

h4 {
  font-size: 1.5rem;
}

p {
  margin-bottom: 1rem;
}

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

a:hover {
  color: var(--primary);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  background-color: var(--primary);
  color: var(--text-dark);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background-color: var(--secondary);
  color: var(--text-light);
}

.btn-secondary:hover {
  background-color: var(--secondary-dark);
}

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

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--text-dark);
}

.btn-lg {
  padding: 15px 40px;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.9rem;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

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

.text-secondary {
  color: var(--secondary);
}

.bg-primary {
  background-color: var(--primary);
}

.bg-secondary {
  background-color: var(--secondary);
}

.bg-light {
  background-color: var(--gray-light);
}

.bg-gray {
  background-color: var(--gray);
}

.section {
  padding: 100px 0;
}

.section-sm {
  padding: 60px 0;
}

.section-title {
  margin-bottom: 50px;
}

.section-title h2 {
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
}

.section-title h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -10px;
  width: 50px;
  height: 3px;
  background-color: var(--primary);
}

.section-title.text-center h2::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Grid System */
.row {
  display: flex;
  flex-wrap: wrap;
  margin-right: -15px;
  margin-left: -15px;
}

.col {
  flex: 1 0 0%;
  padding-right: 15px;
  padding-left: 15px;
}

.col-1 {
  flex: 0 0 8.333333%;
  max-width: 8.333333%;
}
.col-2 {
  flex: 0 0 16.666667%;
  max-width: 16.666667%;
}
.col-3 {
  flex: 0 0 25%;
  max-width: 25%;
}
.col-4 {
  flex: 0 0 33.333333%;
  max-width: 33.333333%;
}
.col-5 {
  flex: 0 0 41.666667%;
  max-width: 41.666667%;
}
.col-6 {
  flex: 0 0 50%;
  max-width: 50%;
}
.col-7 {
  flex: 0 0 58.333333%;
  max-width: 58.333333%;
}
.col-8 {
  flex: 0 0 66.666667%;
  max-width: 66.666667%;
}
.col-9 {
  flex: 0 0 75%;
  max-width: 75%;
}
.col-10 {
  flex: 0 0 83.333333%;
  max-width: 83.333333%;
}
.col-11 {
  flex: 0 0 91.666667%;
  max-width: 91.666667%;
}
.col-12 {
  flex: 0 0 100%;
  max-width: 100%;
}

/* Spacing */
.mt-1 {
  margin-top: 0.25rem;
}
.mt-2 {
  margin-top: 0.5rem;
}
.mt-3 {
  margin-top: 1rem;
}
.mt-4 {
  margin-top: 1.5rem;
}
.mt-5 {
  margin-top: 3rem;
}

.mb-1 {
  margin-bottom: 0.25rem;
}
.mb-2 {
  margin-bottom: 0.5rem;
}
.mb-3 {
  margin-bottom: 1rem;
}
.mb-4 {
  margin-bottom: 1.5rem;
}
.mb-5 {
  margin-bottom: 3rem;
}

.ml-1 {
  margin-left: 0.25rem;
}
.ml-2 {
  margin-left: 0.5rem;
}
.ml-3 {
  margin-left: 1rem;
}
.ml-4 {
  margin-left: 1.5rem;
}
.ml-5 {
  margin-left: 3rem;
}

.mr-1 {
  margin-right: 0.25rem;
}
.mr-2 {
  margin-right: 0.5rem;
}
.mr-3 {
  margin-right: 1rem;
}
.mr-4 {
  margin-right: 1.5rem;
}
.mr-5 {
  margin-right: 3rem;
}

.p-1 {
  padding: 0.25rem;
}
.p-2 {
  padding: 0.5rem;
}
.p-3 {
  padding: 1rem;
}
.p-4 {
  padding: 1.5rem;
}
.p-5 {
  padding: 3rem;
}

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

@keyframes slideInUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.animate-fadeIn {
  animation: fadeIn 1s ease forwards;
}

.animate-slideInUp {
  animation: slideInUp 0.8s ease forwards;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* Responsive */
@media (max-width: 1200px) {
  .container {
    max-width: 960px;
  }
}

@media (max-width: 992px) {
  .container {
    max-width: 720px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.2rem;
  }
}

@media (max-width: 768px) {
  .container {
    max-width: 540px;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .section {
    padding: 70px 0;
  }

  .col-md-6 {
    flex: 0 0 50%;
    max-width: 50%;
  }

  .col-md-12 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

@media (max-width: 576px) {
  .container {
    max-width: 100%;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .section {
    padding: 50px 0;
  }

  .col-sm-12 {
    flex: 0 0 100%;
    max-width: 100%;
  }
}

/* Scroll to Top */
.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  color: var(--text-dark);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
}

.scroll-top.active {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background-color: var(--primary-dark);
}

/* 3D Elements */
.blob {
  position: absolute;
  z-index: -1;
  opacity: 0.7;
}

.blob-1 {
  top: 10%;
  left: 5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle at 30% 30%, var(--primary), transparent 70%);
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  animation: blob-animation 15s linear infinite alternate;
}

.blob-2 {
  bottom: 10%;
  right: 5%;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle at 70% 70%, var(--secondary), transparent 70%);
  border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
  animation: blob-animation 20s linear infinite alternate-reverse;
}

@keyframes blob-animation {
  0% {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  }
  25% {
    border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%;
  }
  50% {
    border-radius: 30% 70% 70% 30% / 70% 30% 30% 70%;
  }
  75% {
    border-radius: 70% 30% 30% 70% / 30% 70% 70% 30%;
  }
  100% {
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  }
}