:root {
  --primary-color: #007bff;
  --secondary-color: #0072ff;
  --accent-color: #00c6ff;
  --light-bg: #f0f4fa;
  --white: #ffffff;
  --shadow: rgba(0, 0, 0, 0.1);
    --font-family: 'Segoe UI', Tahoma, 'Geneva', Verdana, sans-serif;

}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--light-bg);
  color: var(--primary-color);
  line-height: 1.6;
}

/* Navigation Styles */

.navbar{
  background-color: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-color) !important;
}

.navbar-nav .nav-link {
  font-weight: 500;
  margin: 0 0.5rem;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color) !important;
}

header.hero-section {
  background: linear-gradient(to right, rgba(0, 51, 102, 0.85), rgba(0, 110, 220, 0.85)),
              url('school-bg.jpg') center/cover no-repeat;
  color: white;
  text-align: center;
  padding: 150px 20px 100px;
}

.hero-section h1 {
  font-size: 4rem;
  margin: 0;
}

.hero-section p {
  font-size: 1.5rem;
  color: #dceeff;
}

.intro-section {
  background: var(--white);
  margin-top: -60px;
  border-radius: 24px;
  padding: 60px 40px;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 10px 30px var(--shadow);
  text-align: center;
}

.intro-section h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: var(--primary-color);
}

.intro-section p {
  font-size: 1.2rem;
}

.milestone-section {
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
  padding: 70px 30px;
  justify-content: center;
  max-width: 1200px;
  margin: auto;
  align-items: flex-start;
}

.milestone-text {
  flex: 1 1 500px;
}

.milestone-img {
  flex: 1 1 420px;
}

.milestone-img img {
  width: 100%;
  border-radius: 18px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.timeline {
  list-style: none;
  padding-left: 30px;
  border-left: 4px solid var(--secondary-color);
  position: relative;
}

.timeline li {
  margin-bottom: 25px;
  position: relative;
  padding-left: 35px;
}

.timeline li::before {
  content: '';
  position: absolute;
  left: -11px;
  top: 0.55em;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  background: var(--accent-color);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 3px var(--secondary-color);
}

.timeline span {
  font-weight: 600;
  display: block;
  font-size: 1.05rem;
}

.quote-block {
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 70px 20px;
  text-align: center;
  font-size: 1.6rem;
  font-style: italic;
}

.accordion-section {
  max-width: 950px;
  margin: 70px auto;
  padding: 0 25px;
}

.accordion-section h2 {
  font-size: 2.2rem;
  color: var(--primary-color);
  margin-bottom: 35px;
  text-align: center;
}

.accordion details {
  background: var(--white);
  margin-bottom: 25px;
  padding: 22px;
  border-radius: 14px;
  border: 1px solid #cde0ff;
  box-shadow: 0 3px 12px rgba(0, 0, 0, 0.06);
}

.accordion summary {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--secondary-color);
  cursor: pointer;
}

.accordion p {
  margin-top: 12px;
}

/* Footer Styles */
footer {
  background: var(--dark-color) !important;
}

footer h5, footer h6 {
  color: var(--white);
  margin-bottom: 1rem;
}

footer p, footer li {
  color: #adb5bd;
}

footer a {
  color: #adb5bd;
  text-decoration: none;
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--white);
}

.social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  background: var(--primary-color);
  border-radius: 50%;
  text-align: center;
  line-height: 40px;
  transition: all 0.3s ease;
}

.social-links a:hover {
  background: var(--white);
  color: var(--primary-color) !important;
  transform: translateY(-2px);
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: none;
  z-index: 1000;
  border: none;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3);
  transition: all 0.3s ease;
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
}

.back-to-top.show {
  display: block;
}