/* ==========================================================================
   1. Foundational Styles & Variables
   ========================================================================== */

:root {
  /* Color Palette */
  --primary-light: #4c8df7;
  --primary-dark: #055DFE;
  --accent: #FFB800;
  --bg-light: #F8F9FA;
  --bg-dark: #121212;
  --card-light: #FFFFFF;
  --card-dark: #1E1E1E;
  --text-light: #F8F9FA;
  --text-dark: #212529;
  --text-muted-light: #6C757D;
  --text-muted-dark: #A0AEC0;
  --border-light: #DEE2E6;
  --border-dark: #343A40;

  /* Typography */
  --font-display: 'Goldman', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* UI Elements */
  --radius: 16px;
  --shadow-sm: rgba(0, 0, 0, 0.04);
  --shadow-md: rgba(0, 0, 0, 0.08);
  --shadow-lg: rgba(5, 93, 254, 0.15);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-light);
  color: var(--text-dark);
  transition: background-color 0.4s, color 0.4s;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--primary-dark);
}

p {
  color: var(--text-muted-light);
  line-height: 1.6;
}

section {
  max-width: 1500px;
  margin: 4rem auto 0 auto;
  padding: 3rem 2rem;
  background-color: var(--card-light);
  border-radius: var(--radius);
  box-shadow: 0 4px 24px var(--shadow-sm);
}

/* ==========================================================================
   2. Dark Mode Overrides
   ========================================================================== */

body.dark-mode {
  background-color: var(--bg-dark);
  color: var(--text-light);
}

.dark-mode h1, .dark-mode h2, .dark-mode h3 {
  color: var(--primary-light);
}

.dark-mode p {
  color: var(--text-muted-dark);
}

.dark-mode section {
  background-color: var(--card-dark);
  box-shadow: 0 4px 24px var(--shadow-sm);
}

.dark-mode .navbar {
  background-color: rgba(30, 30, 30, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-dark);
}

.dark-mode .navbar-menu li a {
  color: var(--text-light);
}
.dark-mode .navbar-menu li a:hover {
  color: var(--primary-light);
}

.dark-mode .hero-cta {
  background: var(--primary-light);
  color: var(--text-dark);
}
.dark-mode .hero-cta:hover {
  background: var(--accent);
}

.dark-mode .feature-card, .dark-mode .course-card, .dark-mode .testimonial-card {
  background-color: var(--bg-dark);
  border: 1px solid var(--border-dark);
}

.dark-mode .feature-icon {
  background-color: var(--primary-light);
  color: var(--card-dark);
}

.dark-mode .testimonial-card span {
  color: var(--primary-light);
}

.dark-mode .courses-carousel-section,.dark-mode .investors-section{
  background-color: #121212;
}

.dark-mode .investors-track img {
  filter: grayscale(1) brightness(0.8);
}
.dark-mode .investors-track img:hover {
  filter: grayscale(0) brightness(1);
}

.dark-mode .courses-carousel-section .singleBox {
    background-color: var(--card-dark);
    border: 1px solid var(--border-dark);
}

.dark-mode .courses-carousel-section .boxTitle {
    color: var(--text-light);
}

.dark-mode .explore-course-btn {
    background-color: transparent;
    color: var(--primary-light);
    border-color: var(--primary-light);
}
.dark-mode .explore-course-btn:hover {
    background-color: var(--primary-light);
    color: var(--bg-dark);
}

.dark-mode .main-footer {
  background-color: var(--card-dark);
  border-top: 1px solid var(--border-dark);
}
.dark-mode .footer-links a, .dark-mode .footer-social a {
  color: var(--text-light);
}
.dark-mode .footer-links a:hover, .dark-mode .footer-social a:hover {
  color: var(--primary-light);
}
.dark-mode .footer-bottom p {
  color: var(--text-muted-dark);
}

/* Fade animation for theme toggle */
.fade-theme {
  animation: fadeTheme 0.5s;
}
@keyframes fadeTheme {
  from { opacity: 0; } to { opacity: 1; }
}

.navbar-theme-toggle {
    display: none; /* IMPORTANT: Hide on desktop */
    position: relative;
    width: 60px;
    height: 30px;
    padding: 0 4px;
    border: 1px solid var(--border-light);
    background-color: transparent;
    border-radius: 50px;
    color: var(--text-dark);
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition);
}

.navbar-theme-toggle:hover {
    border-color: var(--primary-dark);
    color: var(--primary-dark);
}

.dark-mode .navbar-theme-toggle {
    border-color: var(--border-dark);
    color: var(--text-light);
}

.dark-mode .navbar-theme-toggle:hover {
    border-color: var(--primary-light);
    color: var(--primary-light);
}

/* Icons inside the navbar toggle */
.navbar-theme-toggle .fa-sun,
.navbar-theme-toggle .fa-moon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1rem;
    transition: transform 0.4s ease, opacity 0.3s;
}

.navbar-theme-toggle .fa-moon {
    left: 8px; /* Initial position for light mode */
}
.navbar-theme-toggle .fa-sun {
    right: 8px; /* Initial position for light mode */
    transform: translateY(-50%) scale(0);
    opacity: 0;
}

body.dark-mode .navbar-theme-toggle .fa-moon {
    transform: translateY(-50%) scale(0);
    opacity: 0;
}
body.dark-mode .navbar-theme-toggle .fa-sun {
    transform: translateY(-50%) scale(1);
    opacity: 1;
}


/* Tablet and below (e.g., max-width: 768px) */
@media (max-width: 768px) {
    /* Hide the original floating button to avoid duplicates */
    .darkmode-awesome-btn {
        display: none;
    }

    /* Adjust navbar layout */
    .navbar-container {
        flex-direction: column;
        gap: 1.5rem;
    }

    /* Create the logo + button group */
    .navbar-logo-container {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    /* Show the navbar theme toggle */
    .navbar-theme-toggle {
        display: flex; /* This makes it visible */
        align-items: center;
        justify-content: space-between;
    }
  }


/* ==========================================================================
   3. Component Styles
   ========================================================================== */

/* --- Navbar --- */
.navbar {
  width: 100%;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}
.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
}
.navbar-logo img {
  height: 48px;
  width: auto;
}
.navbar-menu {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.navbar-menu li a {
  color: var(--text-dark);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
}
.navbar-menu li a:hover {
  color: var(--primary-dark);
}


/* --- Hero Section --- */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  margin-top: 2rem;
}
.hero-content {
  flex: 1.2;
}
.hero-content h1 {
  font-size: 3.2rem;
  margin-bottom: 1rem;
  line-height: 1.2;
  background: linear-gradient(45deg, var(--primary-dark), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.dark-mode .hero-content h1 {
    background: linear-gradient(45deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}
.hero-cta {
  background: var(--primary-dark);
  color: var(--card-light);
  border: none;
  border-radius: 50px;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 15px var(--shadow-lg);
  transition: var(--transition);
}
.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px var(--shadow-lg);
  background-color: var(--accent);
  color: var(--text-dark);
}
.hero-image {
  flex: 1;
}
.hero-image img {
  width: 100%;
  max-width: 450px;
  border-radius: var(--radius);
}

/* --- Features & Courses Sections --- */
.features h2, .courses h2, .testimonials h2, .investors-title, .carousel-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
}

.features-grid, .courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-card, .course-card {
  background-color: var(--bg-light);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--border-light);
}
.feature-card:hover, .course-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 30px var(--shadow-md);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem auto;
    border-radius: 50%;
    background-color: var(--primary-dark);
    color: var(--card-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-10deg);
}

.course-card img {
  width: 64px;
  margin-bottom: 1.5rem;
}
h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

/* --- Testimonials Section --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}
.testimonial-card {
  background-color: var(--bg-light);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--border-light);
  position: relative;
}
.testimonial-card::before {
    content: '\f10d';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 1rem;
    left: 1.5rem;
    font-size: 2rem;
    color: var(--primary-dark);
    opacity: 0.1;
}
.dark-mode .testimonial-card::before {
    color: var(--primary-light);
}

.testimonial-card p {
  font-style: italic;
  margin-bottom: 1rem;
}
.testimonial-card span {
  display: block;
  font-weight: 600;
  font-style: normal;
  color: var(--primary-dark);
}

/* --- Investors Marquee & Courses Carousel (Shared full-width style) --- */
.investors-section, .courses-carousel-section {
    width: 100%;
    padding: 3rem 0;
    background-color: transparent; /* Inherits from body */
    box-shadow: none;
    border-radius: 0;
}
.investors-marquee, .courses-carousel {
  overflow: hidden;
  width: 100%;
  -webkit-mask-image: linear-gradient(to right, transparent, black 20%, black 80%, transparent);
  mask-image: linear-gradient(to right, transparent, black 20%, black 80%, transparent);
}
.investors-track, .carousel-track {
  display: flex;
  width: max-content;
  will-change: transform;
}
.investors-track {
    animation: marquee-scroll-investor 40s linear infinite;
    gap: 4rem;
    align-items: center;
}
.carousel-track {
    animation: marquee-scroll-course 60s linear infinite;
    gap: 1.5rem;
    padding: 1rem; /* for shadow visibility */
}

@keyframes marquee-scroll-investor {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes marquee-scroll-course {
  from { transform: translateX(-50%); }
  to { transform: translateX(0); }
}

.investors-track img {
  height: 60px;
  width: auto;
  object-fit: contain;
  filter: grayscale(1) opacity(0.7);
  transition: var(--transition);
}
.investors-track img:hover {
  filter: grayscale(0) opacity(1);
  transform: scale(1.1);
}

/* Course Carousel Specific Cards */
.courses-carousel-section .singleBox {
    background-color: var(--card-light);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 4px 15px var(--shadow-md);
    display: flex;
    flex-direction: column;
    width: 320px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-light);
}
.courses-carousel-section .singleBox:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: 0 15px 35px var(--shadow-lg);
    z-index: 10;
}
.courses-carousel-section .singleBox img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}
.courses-carousel-section .boxTitle {
    padding: 1.5rem;
    font-size: 1.1rem;
    font-family: var(--font-body);
    font-weight: 600;
    color: var(--text-dark);
}
.explore-course-btn {
    margin-top: 3rem;
    padding: 0.8rem 2rem;
    border-radius: 50px;
    border: 2px solid var(--primary-dark);
    background-color: transparent;
    color: var(--primary-dark);
    font-size: 1rem;
    font-weight: 700;
    font-family: var(--font-display);
    cursor: pointer;
    transition: var(--transition);
}
.explore-course-btn:hover {
    background-color: var(--primary-dark);
    color: var(--card-light);
    transform: scale(1.05);
}

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

/* --- Footer --- */
.main-footer {
  background-color: var(--card-light);
  color: var(--text-dark);
  padding: 3rem 2rem 1rem 2rem;
  margin-top: 4rem;
  border-top: 1px solid var(--border-light);
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 2rem;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--primary-dark);
}
.dark-mode .footer-logo { color: var(--primary-light); }
.footer-logo img {
  width: 100%;
  height: 48px;
}
.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.footer-links a, .footer-social a {
  color: var(--text-muted-light);
  text-decoration: none;
  transition: var(--transition);
}
.footer-links a:hover, .footer-social a:hover {
  color: var(--primary-dark);
}
.footer-social {
  display: flex;
  gap: 1.5rem;
  font-size: 1.5rem;
}
.footer-bottom {
  text-align: center;
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}
.dark-mode .footer-bottom { border-top-color: var(--border-dark); }
.footer-bottom p { font-size: 0.9rem; }


/* ==========================================================================
   4. Utility & Floating Elements
   ========================================================================== */

/* --- Dark Mode Floating Button --- */
.darkmode-awesome-btn {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2D3748, #1A202C);
  color: var(--accent);
  border: none;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  outline: none;
  overflow: hidden;
}
.darkmode-awesome-btn:hover {
  transform: scale(1.1) rotate(-15deg);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.darkmode-awesome-btn .fa-sun, .darkmode-awesome-btn .fa-moon {
    position: absolute;
    transition: transform 0.4s ease-out, opacity 0.3s;
}
.darkmode-awesome-btn .fa-sun {
    transform: translateY(150%) scale(0.5);
    opacity: 0;
}
body.dark-mode .darkmode-awesome-btn {
    background: linear-gradient(135deg, var(--accent), #FFD700);
    color: #1A202C;
}
body.dark-mode .darkmode-awesome-btn .fa-moon {
    transform: translateY(-150%) scale(0.5);
    opacity: 0;
}
body.dark-mode .darkmode-awesome-btn .fa-sun {
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* Skeleton screen styles will automatically inherit the new variables. No changes needed. */

/* ==========================================================================
   5. Responsive Styles
   ========================================================================== */
@media (max-width: 1024px) {
  h1 { font-size: 2.8rem; }
  h2 { font-size: 2rem; }
  section, .hero { padding: 2rem 1.5rem; }
  .darkmode-awesome-btn {
        display: none;
    }
}

@media (max-width: 768px) {
  .navbar-container {
    flex-direction: column;
    gap: 1.5rem;
  }

  .navbar{
    position: static;
    backdrop-filter: none;
    background: #191b4d;
background: linear-gradient(90deg, rgba(25, 27, 77, 1) 0%, rgba(74, 74, 161, 1) 100%);

.navbar-menu{
  padding-left: 25px;
  padding-right: 25px;
}

.navbar-menu li a{
  color: #fff;
}
  }
  .hero {
    flex-direction: column;
    text-align: center;
  }
  h1 { font-size: 2.5rem; }
  .footer-container {
      flex-direction: column;
      text-align: center;
  }

  .darkmode-awesome-btn {
        display: none;
    }
}

@media (max-width: 480px) {
  .navbar-menu { gap: 1.5rem; }
  h1 { font-size: 2.2rem; }
  section { padding: 2rem 1rem; }

  .darkmode-awesome-btn {
        display: none;
    }


 .footer-links {
        flex-direction: column; /* Stack the nav links themselves */
        align-items: center;
        gap: 1.5rem;            /* Adjust gap for vertical links */
    }

    .footer-social {
        margin-top: 1rem; /* Add a bit of space above social icons */
    }
  }