.navbar-default {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  border: none;
}

.navbar-default .navbar-brand,
.navbar-default .navbar-nav .nav-link {
  color: white !important;
  font-weight: 500;
}

.navbar-default .navbar-nav .nav-link:hover,
.navbar-default .navbar-nav .nav-link.active {
  background-color: rgba(255,255,255,0.1) !important;
  color: white !important;
}

.navbar-toggler {
  border-color: rgba(255,255,255,0.5);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f8f9fa;
}

.hero-section {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: white;
  padding: 60px 0;
  margin-bottom: 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.4rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.course-banner {
  width: 100%;
  max-width: 600px;
  margin: 2rem auto;
  border-radius: 15px;
  overflow: hidden;
}

.course-banner img {
  width: 100%;
  height: auto;
  display: block;
}

.coach-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.coach-photo {
  flex-shrink: 0;
}

.coach-info {
  text-align: left;
}

.coach-info h3 {
  margin-bottom: 1rem;
}

.main-content {
  background: white;
  padding: 40px;
  margin: 0;
  min-height: 70vh;
}

.learning-objectives {
  background: #f8f9fa;
  padding: 2rem;
  border-radius: 10px;
  margin: 2rem 0;
  border-left: 4px solid #1e3a8a;
}

.learning-objectives h3 {
  color: #1e3a8a;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.learning-objectives ul {
  list-style-type: none;
  padding-left: 0;
}

.learning-objectives li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
}

.learning-objectives li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #1e3a8a;
  font-weight: bold;
}

.curriculum-item {
  background: white;
  border: 1px solid #e9ecef;
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.curriculum-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.curriculum-item h4 {
  color: #1e3a8a;
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.schedule-info {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  color: white;
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  margin: 2rem 0;
}

.schedule-info h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.advanced-note {
  background: #fef3c7;
  border: 1px solid #f59e0b;
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2rem 0;
}

.advanced-note h4 {
  color: #92400e;
  margin-bottom: 0.5rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  border: 1px solid #e9ecef;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  transition: transform 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
}

.feature-card h4 {
  color: #1e3a8a;
  margin-bottom: 1rem;
}

.cta-button {
  background: #dc2626;
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(220, 38, 38, 0.3);
  margin: 2rem 0;
  display: inline-block;
  text-decoration: none;
}

.cta-button:hover {
  background: #b91c1c;
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(220, 38, 38, 0.4);
  color: white;
  text-decoration: none;
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }
  .hero-subtitle {
    font-size: 1.2rem;
  }
  .coach-section {
    flex-direction: column;
    gap: 1rem;
  }
  .main-content {
    padding: 20px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Visual Flair ── */

html {
  scroll-behavior: smooth;
}

/* Navbar shrink on scroll */
.navbar {
  transition: padding 0.3s ease, backdrop-filter 0.3s ease;
}
.navbar.scrolled {
  padding-top: 0.25rem;
  padding-bottom: 0.25rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: linear-gradient(135deg, rgba(30,58,138,0.95) 0%, rgba(59,130,246,0.95) 100%) !important;
}

/* Section h2 underline accent */
.main-content h2 {
  position: relative;
  padding-bottom: 0.6rem;
  margin-bottom: 1.8rem;
}
.main-content h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(90deg, #1e3a8a, #3b82f6);
  border-radius: 2px;
}

/* Curriculum item left accent bar */
.curriculum-item {
  border-left: 3px solid transparent;
  transition: border-left-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.curriculum-item:hover {
  border-left-color: #3b82f6;
}

/* Feature card top accent border */
.feature-card {
  border-top: 3px solid transparent;
  transition: border-top-color 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.feature-card:hover {
  border-top-color: #3b82f6;
}

/* CTA button pulse glow */
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 4px 6px rgba(220, 38, 38, 0.3); }
  50%       { box-shadow: 0 6px 20px rgba(220, 38, 38, 0.55); }
}
.cta-button {
  animation: pulse-glow 2.5s ease-in-out infinite;
}
.cta-button:hover {
  animation: none;
  box-shadow: 0 6px 12px rgba(220, 38, 38, 0.4);
}