:root {
    --primary-color: #66FCF1;
    --primary-dark: #45A29E;
    --dark-bg: #0B0C10;
    --darker-bg: #1F2833;
    --input-bg: #2A2A2A;
    --text-light: #FFFFFF;
    --text-muted: #AAAAAA;
}

/* General Reset */
body {
    margin: 0;
    background: transparent; /* Let particles show through */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    
}

/* Particles.js Background */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1; /* Behind all content */
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    display: block !important; /* Ensure visibility */
}

/* Navbar Base */
.navbar {
  background-color: var(--darker-bg);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  padding: 15px 0 !important;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.3s ease;
  
}

/* Navbar when scrolled */
.navbar.scrolled {
  padding: 10px 0;
  background-color: rgba(31, 40, 51, 0.95);
  backdrop-filter: blur(10px);
}

/* Brand Styling */
.navbar-brand {
  color: var(--primary-color) !important;
  font-weight: 700;
  font-size: 1.8rem;
  letter-spacing: 1px;
  transition: color 0.3s ease, transform 0.3s ease;
  text-decoration: none !important;
}

.navbar-brand:hover {
  color: #ffffff !important;
  transform: scale(1.05);
  text-decoration: none !important;
}

/* Nav Link Buttons */
.nav-link {
  color: var(--text-light) !important;
  font-weight: 500;
  padding: 10px 15px !important;
  margin: 0 5px;
  border-radius: 20px;
  transition: all 0.3s ease;
  text-decoration: none !important;
}

.nav-link:hover {
  color: var(--dark-bg) !important;
  background-color: #ffffff !important;
  text-decoration: none !important;
}

/* Active State (optional styling) */
.active {
  color: var(--dark-bg) !important; /* white text */
  background-color: var(--primary-color) !important;
  border-radius: 20px;
}

/* Navbar Toggler */
.navbar-toggler {
  border: none;
  padding: 0;
}

.navbar-toggler:focus {
  box-shadow: none;
}

.navbar-toggler-icon {
  width: 30px;
  height: 20px;
  position: relative;
  transition: all 0.3s ease;
}

.navbar-toggler-icon span {
  display: block;
  position: absolute;
  height: 2px;
  width: 100%;
  background: var(--primary-color);
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: all 0.3s ease;
}

.navbar-toggler-icon span:nth-child(1) { top: 0; }
.navbar-toggler-icon span:nth-child(2),
.navbar-toggler-icon span:nth-child(3) { top: 10px; }
.navbar-toggler-icon span:nth-child(4) { top: 20px; }

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(1),
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(4) {
  opacity: 0;
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(2) {
  transform: rotate(45deg);
}

.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span:nth-child(3) {
  transform: rotate(-45deg);
}

/* Hero Section */
.hero-section {
    color: rgb(209, 207, 207);
    padding: 60px 0;
    text-align: center;
    position: relative;
    z-index: 1; /* Above particles */
}

.hero-section h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
}

/* Promotional Carousel */
#promoSlides {
    width: 90%;
    margin: 2rem auto;
    border-radius: 10px;
    overflow: hidden;
}

.promo-carousel {
    margin-top: 2rem;
}

.promo-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #b3ebf1;
    padding: 2rem 1.5rem;
    flex-wrap: wrap;
    min-height: 250px;
}

.promo-text {
    max-width: 50%;
    color: #000;
    padding: 1rem;
}

.promo-text h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.promo-text h1 span {
    display: block;
    color: #333;
    font-size: 1.5rem;
}

.promo-text p {
    font-size: 1rem;
}

.promo-image {
    max-width: 45%;
    text-align: center;
}

.promo-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.3);
}

.carousel-control-prev,
.carousel-control-next {
    display: none !important;
}

/* Courses Section */
#courses {
    position: relative;
    z-index: 1;
    padding: 4rem 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#courses h2 {
    font-weight: 700;
    color: var(--primary-color);
    position: relative;
    margin-bottom: 2.5rem;
    text-align: center;
    
}

#courses h2::after {
    content: '';
    position: absolute;
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

/* Course Wrapper */
.course-wrapper {
    position: relative;
    max-width: 100%;
    width: 100%;
    margin: 0;
}

/* Course List (Carousel) */
.course-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 20px;
    overflow-x: auto;
    padding: 0 30px; /* Increased padding to accommodate button spacing */
    align-items: stretch;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    user-select: none;
    cursor: grab;
    scrollbar-width: none;
}

.course-list::-webkit-scrollbar {
    display: none;
}

.course-list:active {
    cursor: grabbing;
}

/* Course Card */
.course-card {
    flex: 0 0 calc(25% - 15px); /* 4 cards on desktop */
    background: rgba(42, 42, 42, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(102, 252, 241, 0.1);
    display: inline-block;
    scroll-snap-align: start;
    transition: all 0.3s ease;
}

.course-card:hover {
    transform: none;
    border-color: rgba(102, 252, 241, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Course Image */
.course-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-top-left-radius: 15px;
    border-top-right-radius: 15px;
}

/* Course Content */
.course-content {
    padding: 1.5rem;
}

.course-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.instructor {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.rating {
    font-size: 0.85rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.rating i {
    font-size: 0.8rem;
}

.price {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.old-price {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-left: 0.5rem;
}

/* Enroll Button */
.enroll-btn {
    width: 100%;
    padding: 0.75rem;
    background: var(--primary-color);
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-bg);
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
}

.enroll-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 252, 241, 0.3);
}

.a_enroll{
    text-decoration: none;
    color: var(--dark-bg);
}

/* Slide Buttons */
.slide-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(42, 42, 42, 0.7);
    border: 1px solid rgba(102, 252, 241, 0.3);
    color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.slide-btn:hover {
    background: var(--primary-color);
    color: var(--dark-bg);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 5px 15px rgba(102, 252, 241, 0.3);
}

.left-btn {
    left: -60px; /* Increased spacing to match the edited image */
}

.right-btn {
    right: -60px; /* Increased spacing to match the edited image */
}


/* Responsive Adjustments */
@media (max-width: 992px) {
    .course-list {
        padding: 0 15px; /* Reduced padding for smaller screens */
    }

    .course-card {
        flex: 0 0 calc(50% - 22.5px); /* 2 cards */
    }

    .left-btn {
        left: 10px; /* Adjusted spacing */
    }

    .right-btn {
        right: 10px; /* Adjusted spacing */
    }
}

@media (max-width: 768px) {
    /* Hero Section */
    .hero-section {
        padding: 40px 0;
    }
    .hero-section h1 {
        font-size: 1.8rem;
    }
    .hero-section p {
        font-size: 1rem;
    }

    /* Search Section */
    .search_box {
        flex-direction: column;
        align-items: center;
    }
    .search_box input {
        width: 100%;
    }

    /* Promo Carousel */
    #promoSlides {
        width: 100%;
        margin: 1rem 0;
        border-radius: 0;
    }
    .promo-banner {
        flex-direction: column;
        text-align: center;
        min-height: 200px;
        padding: 1.5rem 1rem;
    }
    .promo-text, .promo-image {
        max-width: 100%;
    }
    .promo-text h1 {
        font-size: 1.5rem;
    }
    .promo-text h1 span {
        font-size: 1.2rem;
    }
    .promo-text p {
        font-size: 0.9rem;
    }
    .promo-image img {
        max-width: 80%;
        margin: 0 auto;
    }

    /* Courses Section */
    #courses {
        padding: 2rem 0;
    }

    .course-wrapper {
        padding: 0;
    }

    .course-list {
        gap: 15px;
        padding: 0 15px; /* Maintain gaps */
    }

    .course-card {
        flex: 0 0 calc(50% - 22.5px); /* 2 cards */
    }

    .course-image {
        height: 150px;
    }

    .course-content {
        padding: 1rem;
    }

    .slide-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }

    .left-btn {
        left: 10px; /* Adjusted spacing */
    }

    .right-btn {
        right: 10px; /* Adjusted spacing */
    }
}

@media (max-width: 576px) {
    /* Hero Section */
    .hero-section {
        padding: 30px 0;
    }
    .hero-section h1 {
        font-size: 1.5rem;
    }
    .hero-section p {
        font-size: 0.9rem;
    }

    /* Search Section */
    .search_box button {
        width: 100%;
        max-width: 200px;
    }

    /* Promo Carousel */
    .promo-banner {
        padding: 1rem 0.5rem;
        min-height: 180px;
    }
    .promo-text h1 {
        font-size: 1.3rem;
    }
    .promo-text h1 span {
        font-size: 1rem;
    }
    .promo-text p {
        font-size: 0.8rem;
    }

    /* Courses Section */
    .course-card {
        flex: 0 0 calc(85% - 22.5px); /* Nearly full-width for single card focus */
    }

    .course-title {
        font-size: 1.1rem;
    }

    .course-content {
        padding: 0.75rem;
    }

    .course-image {
        height: 120px;
    }

    .slide-btn {
        display: none;
    }

    /* Particles.js (disable for performance) */
    #particles-js {
        display: none;
    }
    body {
        background: linear-gradient(to bottom, var(--darker-bg), var(--dark-bg)); /* Fallback */
    }


}

/* New Footer Styling */
.custom-footer {
  background: linear-gradient(135deg, #1E1B3A, #2C2A52);
  color: #F8F8F8;
  padding: 2rem 1.5rem;
  font-family: 'Segoe UI', sans-serif;
  backdrop-filter: blur(4px);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  padding-bottom: 1.5rem; /* Removed border-bottom */
}

.footer-box {
  flex: 1;
  min-width: 220px;
  padding-left: 1rem;
}

.footer-box h2 {
  font-size: 1.8rem;
  font-weight: 800; /* Bold CODE-PULSE */
  color: #66FCF1;
  font-family: 'Courier New', monospace;
  margin-bottom: 0.5rem;
}

.footer-box h3 {
  font-size: 1.1rem;
  color: #FFA6F1;
  margin-bottom: 0.7rem;
}

.footer-box p,
.footer-box a {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #EEE;
  text-decoration: none;
  transition: all 0.3s ease;
}

.footer-box a:hover {
  color: #66FCF1;
  padding-left: 5px;
}

.footer-box i {
  margin-right: 6px;
}

.footer-credits {
  text-align: center;
  font-size: 0.85rem;
  margin-top: 1.2rem;
  color: #BBBBBB;
}

.footer-credits a {
  color: #66FCF1;
  text-decoration: underline;
}