/* Base Body Styling */
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(to bottom left, #0a192f, #000000);
  font-family: 'Segoe UI', sans-serif;
}

/* Navbar */
.custom-navbar {
  background: transparent;
  padding: 1rem 2rem;
}

.stack-logo {
  font-size: 35px;
  font-weight: 700;
  color: #ffffff !important;
  transition: all 0.4s ease-in-out;
}
 
.stack-logo:hover {
  text-shadow: 0 0 12px #000;
  transform: scale(1.05);
}

.nav-link {
  color: white !important;
  font-weight: 500;
  margin: 0 1rem;
  transition: all 0.3s ease-in-out;
  box-shadow: none !important;
}

.nav-link:hover {
  color: #00bfff !important;
  text-shadow: 0 0 10px #00bfff;
  transform: scale(1.08);
}

.contact-link {
  color: #00bfff;
  font-weight: 600;
  transition: all 0.3s ease-in-out;
}

.contact-link:hover {
  text-shadow: 0 0 10px #00bfff;
  transform: scale(1.1);
}

/* Dropdown */
.dropdown-menu {
  background-color: rgba(10, 25, 47, 0.95);
  border: none;
}

.dropdown-item {
  color: white;
  transition: all 0.3s ease;
  box-shadow: none !important;
}

.dropdown-item:hover {
  color: #00bfff;
  background-color: transparent;
  text-shadow: 0 0 8px #00bfff;
  transform: scale(1.05);
}

:root {
  --primary: #4e00c2;
  --glow: rgba(106, 0, 255, 0.6);
  --bg-dark: #0a0a1a;
  --bg-blue: #101b40;
  --text-light: #e6e6fa;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(145deg, var(--bg-dark), var(--bg-blue));
  color: var(--text-light);
}

/* About Us Section */
.about-us-section {
  background: linear-gradient(145deg, #111633, #080c1a);
  color: white;
  padding: 60px 20px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #00bfff;
  margin-bottom: 30px;
}

.about-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card h4 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: #00bfff;
}

.about-card p {
  font-size: 1rem;
  color: #ddd;
}

.about-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
}

/* Glow Tab Section */
.glow-tab-section {
  padding: 100px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 5vh;
}

.glow-tab {
  background: linear-gradient(145deg, #111633, #080c1a);
  padding: 60px 80px;
  border-radius: 20px;
  box-shadow: 0 0 15px var(--glow), 0 0 25px var(--primary),
              inset 0 0 10px rgba(177, 20, 20, 0.1);
  transform: perspective(1000px) rotateX(3deg) rotateY(-2deg);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  max-width: 800px;
  text-align: center;
  animation: flicker-glow 3s infinite alternate;
}

.glow-tab:hover {
  transform: perspective(1000px) rotateX(0deg) rotateY(0deg) scale(1.02);
  box-shadow: 0 0 50px var(--glow), 0 0 25px var(--primary);
}

.glow-title {
  font-size: 2.8rem;
  color: var(--text-light);
  margin-bottom: 20px;
  text-shadow: 0 0 10px var(--glow), 0 0 20px var(--primary);
}

.glow-desc {
  font-size: 1.2rem;
  color: #ddd;
  line-height: 1.7;
}

@keyframes flicker-glow {
  0% { box-shadow: 0 0 20px var(--glow), 0 0 40px var(--primary); }
  100% { box-shadow: 0 0 35px var(--primary), 0 0 60px var(--glow); }
}

/* Features Tabs */
.features-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  padding: 80px 20px;
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-blue));
}

.tab-card {
  flex: 1 1 300px;
  background: linear-gradient(145deg, #111633, #080c1a);
  padding: 20px;
  border-radius: 20px;
  box-shadow: 0 0 15px var(--glow), 0 0 25px var(--glow),
              inset 0 0 10px rgba(255, 255, 255, 0.05);
  transform: perspective(800px) rotateY(-2deg);
  transition: transform 0.5s ease, box-shadow 0.5s ease;
  animation: glow-flicker 3s infinite alternate;
}

.tab-card:hover {
  transform: perspective(1000px) rotateY(0deg) scale(1.03);
  box-shadow: 0 0 30px var(--glow), 0 0 50px var(--glow),
              inset 0 0 10px rgba(255, 255, 255, 0.1);
}

.tab-card h3 {
  font-size: 1.5rem;
  color: var(--text-light);
  text-shadow: 0 0 10px var(--glow);
  margin-bottom: 15px;
}

.tab-card p {
  font-size: 1rem;
  line-height: 1.7;
  color: #cfd2f5;
}

@keyframes glow-flicker {
  0% { box-shadow: 0 0 15px var(--glow); }
  100% { box-shadow: 0 0 30px var(--glow); }
}