/* 🧠 Neo-Holographic Glassmorphism Theme (Fixed Banner Image Visibility) */
:root {
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-glow: rgba(0, 255, 255, 0.35);
  --text-main: rgba(255, 255, 255, 0.95);
  --text-dim: rgba(255, 255, 255, 0.75);
  --neon-blue: #00eaff;
  --neon-pink: #ff00ff;
  --neon-gradient: linear-gradient(120deg, #00eaff, #ff00ff, #00ffc6);
}

/* ✨ Floating Glow Animation */
@keyframes float-glow {
  0%, 100% {
    transform: translateY(0);
    box-shadow: 0 0 12px var(--glass-glow);
  }
  50% {
    transform: translateY(-3px);
    box-shadow: 0 0 30px var(--neon-blue);
  }
}

/* 🌀 Gradient Drift Animation */
@keyframes gradient-drift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* 🔮 Subject Card */
.subject-card {
  position: relative;
  color: var(--text-main);
  border-radius: 22px;
  padding: 28px;
  text-align: center;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  background-image: var(--neon-gradient);
  background-size: 300% 300%;
  animation: gradient-drift 8s infinite ease-in-out;
}

.subject-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.15), transparent 70%);
  opacity: 0;
  transition: opacity 0.6s ease;
}

.subject-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 15px 50px rgba(0, 255, 255, 0.4);
  animation: float-glow 4s infinite ease-in-out;
}

.subject-card:hover::before {
  opacity: 1;
}

/* 🌌 Banner (Fixed Image Visibility) */
.banner {
  position: relative;
  height: 220px;
  width: 100%;
  border-radius: 0 0 24px 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  
/* ✅ FIXED: Correct file path syntax for background image */
background-image: url('../data/banner.JPG');
background-size: cover;
background-position: center;
background-repeat: no-repeat;
z-index: 0;
}

.banner::before {
  content: '';
  position: absolute;
  inset: 0;
  /* ✅ FIXED: Make overlay more transparent so image shows */
  background: linear-gradient(
    60deg,
    rgba(0, 0, 0, 0.45),
    rgba(0, 50, 100, 0.35),
    rgba(0, 0, 0, 0.45)
  );
  backdrop-filter: blur(3px);
  z-index: 1;
}

.banner-content {
  position: relative;
  color: var(--text-main);
  z-index: 2;
  text-align: center;
  text-shadow: 0 2px 15px rgba(0, 0, 0, 0.6);
}

.banner-logo {
  width: 110px;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 15px var(--neon-blue));
}

.banner h1 {
  font-size: 2.2em;
  font-weight: 400;
  background: var(--neon-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* 🧩 Quantum Button */
.modern-button {
  display: inline-block;
  padding: 12px 32px;
  font-size: 1em;
  color: var(--text-main);
  background: var(--neon-gradient);
  background-size: 200% 200%;
  border: none;
  border-radius: 32px;
  font-family: 'Segoe UI', sans-serif;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  box-shadow: 0 5px 20px rgba(0, 255, 255, 0.3);
  transition: all 0.4s ease;
  animation: gradient-drift 6s infinite ease-in-out;
  overflow: hidden;
}

.modern-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.25),
    transparent
  );
  transition: 0.6s;
}

.modern-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0, 255, 255, 0.5);
}

.modern-button:hover::before {
  left: 100%;
}

.modern-button:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(0, 255, 255, 0.3);
}

.modern-button span {
  display: block;
  font-size: 0.8em;
  color: var(--text-dim);
  margin-top: 5px;
}

/* 📱 Responsive Tweaks */
@media (max-width: 768px) {
  .subject-card {
    padding: 20px;
    border-radius: 16px;
  }

  .banner {
    height: 180px;
  }

  .banner h1 {
    font-size: 1.6em;
  }

  .modern-button {
    padding: 10px 26px;
    font-size: 0.9em;
  }
}