:root {
  --brand: #00aeef;
  --dark-bg: #020817;
  --text-light: #cfe8ff;
  --glow: #00eaff;
  --blue: #00aaff;
}

/* GENERAL */
body {
  margin: 0;
  background: linear-gradient(180deg, #030a18 0%, #000510 100%);
  color: var(--text-light);
  font-family: 'Poppins', sans-serif;
  overflow-x: hidden;
}

/* NAVBAR */
.navbar {
  background: rgba(2, 10, 25, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 174, 239, 0.3);
  box-shadow: 0 0 20px rgba(0, 174, 239, 0.3);
}
.navbar-brand {
  font-weight: 700;
  color: var(--brand);
  text-shadow: 0 0 10px var(--glow), 0 0 20px var(--brand);
  font-size: 1.5rem;
}
.nav-link {
  color: var(--text-light);
  transition: 0.3s;
}
.nav-link:hover {
  color: var(--glow);
  text-shadow: 0 0 10px var(--glow);
}

/* HERO */
.hero {
  text-align: center;
  padding: 120px 20px 80px;
  background: transparent;
  position: relative;
}
.hero h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 15px #00aeef;
}
.hero p {
  color: #cfe8ff;
  max-width: 600px;
  margin: 10px auto 25px;
  font-size: 1.1rem;
}

/* BUTTON */
.btn-glow {
  background: var(--brand);
  color: white !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 600;
  box-shadow: 0 0 20px var(--brand);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}
.btn-glow:hover {
  background: var(--glow);
  box-shadow: 0 0 40px var(--glow);
  transform: translateY(-3px);
}

/* COURSE CARD */
.class-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 170, 255, 0.3);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  transition: 0.4s;
}
.class-card:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(0, 255, 255, 0.2);
}

/* PRICE TAG */
.price-tag {
  color: #ffeb3b;
  font-weight: 700;
  text-shadow: 0 0 10px #ffee58, 0 0 20px #ffeb3b;
}

/* FOOTER */
.site-footer {
  background: linear-gradient(180deg, #030a18, #010513);
  border-top: 1px solid rgba(0, 174, 239, 0.2);
  color: #ccc;
  font-size: 0.9rem;
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
}
.footer-link {
  color: var(--brand);
  text-decoration: none;
}
.footer-link:hover {
  color: var(--glow);
  text-shadow: 0 0 10px var(--glow);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 1.8rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .btn-glow {
    padding: 8px 18px;
    font-size: 0.9rem;
  }
}

/* PRELOADER */
.preloader {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: #030a18;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.loader-logo {
  font-size: 1.5rem;
  color: var(--glow);
  text-shadow: 0 0 20px var(--glow);
  animation: pulseGlow 2s infinite ease-in-out;
}
@keyframes pulseGlow {
  0%, 100% { opacity: 0.7; text-shadow: 0 0 20px var(--glow); }
  50% { opacity: 1; text-shadow: 0 0 40px var(--brand); }
}

/* 🌠 SmartLearn Cursor Styles */
#cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cursor-color, #00eaff);
  pointer-events: none;
  z-index: 9999;
  box-shadow: 0 0 10px var(--cursor-color, #00eaff),
              0 0 25px var(--cursor-color, #00bfff);
  mix-blend-mode: screen;
  transition: background 0.3s;
}

.trail-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cursor-color, #00eaff);
  pointer-events: none;
  opacity: 0.7;
  z-index: 9998;
  animation: fadeTrail 1.5s ease-out forwards;
}

.sparkle {
  position: fixed;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cursor-color, #00eaff) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.8;
  z-index: 9998;
  animation: sparkleAnim 0.8s ease-out forwards;
}

@keyframes fadeTrail {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.1) translate(20px, 20px); }
}

@keyframes sparkleAnim {
  0% { opacity: 1; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
  100% { opacity: 0; transform: scale(0); }
}

/* 🌠 SmartLearn Custom Cursor */
#cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cursor-color, #00eaff);
  pointer-events: none;
  z-index: 9999;
  box-shadow: 0 0 10px var(--cursor-color, #00eaff),
              0 0 25px var(--cursor-color, #00bfff);
  mix-blend-mode: screen;
  transition: background 0.3s;
}

.trail-dot {
  position: fixed;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cursor-color, #00eaff);
  pointer-events: none;
  opacity: 0.7;
  z-index: 9998;
  animation: fadeTrail 1.5s ease-out forwards;
}

.sparkle {
  position: fixed;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--cursor-color, #00eaff) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0.8;
  z-index: 9998;
  animation: sparkleAnim 0.8s ease-out forwards;
}

@keyframes fadeTrail {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(0.1) translate(20px, 20px); }
}

@keyframes sparkleAnim {
  0% { opacity: 1; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
  100% { opacity: 0; transform: scale(0); }
}
/* 🌟 Glowing Custom Cursor */
#glow-cursor {
    position: fixed;
    top: 0;
    left: 0;
    width: 20px;
    height: 20px;
    background: rgba(0, 174, 255, 0.9);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    box-shadow: 0 0 8px rgba(0, 174, 255, 0.8), 0 0 20px rgba(0, 174, 255, 0.5);
    transition: transform 0.05s ease-out;
}

/* 🌠 Cursor Trail */
.cursor-trail {
    position: fixed;
    top: 0;
    left: 0;
    width: 10px;
    height: 10px;
    background: rgba(0, 174, 255, 0.6);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    filter: blur(3px);
    transition: transform 0.1s ease-out;
}