/* Removes default spacing and sets consistent box-sizing. 
Sets a full-height black background. */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* --- Make background fully black with gradient fade --- */
body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to bottom, #000000, #0f0f0f, #1a1a1a);
  color: white;
}

/* Creates a fixed, semi-transparent black 
navbar with spacing and vertical centering. */
.navbar {
  display: flex; /* Flexbox for layout */
  justify-content: space-between; /* Space between logo and links */
  align-items: center;
  padding: 0.5rem 2rem;
  background: rgba(0, 0, 0, 0.7);
  position: sticky;
  width: 100%;
  top: 0;
  z-index: 100;
  height: 70px;
}

/* Large, bold white text. */
.navbar .logo {
  font-size: 1.5rem;
  color: white;
  font-weight: bold;
}

/* Horizontal navigation layout */
.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

/* Each list item is relatively positioned to enable pseudo-element effects. */
.nav-links li {
  position: relative;
}

/* Clean, animated hover effects. */
.nav-links a {
  position: relative; /* Relative for pseudo-elements */
  display: inline-block; /* Inline-block for padding */
  color: white;
  text-decoration: none;
  padding: 0.5rem 0;
  transition: transform 0.3s ease, color 0.3s ease;
}

/* Color-gradient lines animate on top and bottom. Link floats up slightly. */
.nav-links a::before,
.nav-links a::after {
  content: '';
  position: absolute; /* Positioning */
  height: 2px; /* Line height */ 
  width: 0%;
  background: linear-gradient(90deg, red, blue);
  transition: width 0.4s ease;
}

/* Top line */
.nav-links a::before {
  top: 0;
  left: 100%;
  transform: translateX(-100%);
}

.nav-links a::after {
  bottom: 0;
  left: 0;
}

.nav-links a:hover {
  transform: translateY(-4px);
}

/* Link floats up slightly */
.nav-links a:hover::before,
.nav-links a:hover::after {
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 70px;
  width: auto;
  margin-right: 10px;
}

/* Centered contact cards with flexible layout */
.contact-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center; /* vertically centers */
  gap: 2rem;
  padding: 4rem 2rem 6rem; /* Extra bottom padding before footer */
  min-height: 60vh; /* Ensures center feel on tall screens */
}

/* Card styles: size, perspective, and background */
.card {
  width: 300px;
  height: 420px; /* Adjusted height for better aspect ratio */
  perspective: 1000px;
  border-radius: 25px; /* more obvious roundness */
  background: linear-gradient(to bottom, #222, #111);
  overflow: hidden;
}

/* Inner card for 3D effect */
.card-inner {
  position: relative;  
  width: 100%;
  height: 100%; 
  transition: transform 0.8s;
  transform-style: preserve-3d; /* 3D effect */
}

/* Flipped state for card */
.card.flipped .card-inner {
  transform: rotateY(180deg); 
}

/* Front and back of the card */
.card-front, .card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden; /* Hides back when flipped */
  border-radius: 20px; /* Rounded corners */
  background: linear-gradient(to bottom, #111, #000);
  display: flex; 
  flex-direction: column; 
  align-items: center; 
  justify-content: center; /* Center content */
  box-sizing: border-box; 
}

/* Front card styles */
.card-front img {
  width: 100%;
  height: auto;
  margin-bottom: 1rem;
}

/* Back card styles */
.card-back {
  transform: rotateY(180deg);
  padding: 1rem;
  border: 1px solid #ffffff;
}

/* Back card heading */
.fade-up {
  opacity: 0;
  transform: translateY(50px);
  animation: fadeUp 1s ease-out forwards;
}

/* Animation delays for staggered effect */
.fade-up.delay-1 {
  animation-delay: 0.3s;
}
.fade-up.delay-2 {
  animation-delay: 0.6s;
}
.fade-up.delay-3 {
  animation-delay: 0.9s;
}

/* Fade-up animation */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Form styles: layout, spacing, and input styles */
form {
  display: flex; 
  flex-direction: column; 
  gap: 0.5rem; 
  width: 100%;
}

/* Input fields: padding, border, and background */
input, select, textarea, button {
  padding: 0.6rem;
  border-radius: 5px;
  border: none;
  outline: none;
}

/* Input fields: padding, border, and background */
input, select, textarea {
  background-color: #111;
  color: #fff;
  border: 1px solid #444;
}

/* Input fields: padding, border, and background */
button {
  background: linear-gradient(90deg, rgb(0, 0, 0), rgb(249, 243, 243), rgb(0, 0, 0));
  color: black;
  font-weight: bold;
  cursor: pointer;
}

/* Button hover effect: color change and scale */
button:hover {
  background: #080707;
  color: white;
  transform: scale(1.05);
}

/* Button active effect: scale down */
.card {
  cursor: pointer;
}

/* Card hover effect: scale up */
.card input:focus,
.card textarea:focus,
.card select:focus {
  pointer-events: all;
}
 
/* Card hover effect: scale up */
.overlay-heading {
  position: absolute; /* Centered text */
  top: 385px; /* Adjusted for better centering */
  color: #fff;
  background: rgba(20, 20, 20, 0.55);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 1.1rem;
  font-weight: 600; /* Bold text */
  letter-spacing: 0.5px; /* Spacing between letters */
}

/* Footer base styles: background, text color, padding, and font */
footer {
  background-color: #111;
  border-top: #ccc solid 1px;
  color: #fff;
  padding: 40px 20px;
  font-family: 'Teko', sans-serif;
}

/* Flex container for footer columns; wraps on smaller screens */
.footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Each column inside the footer with flexible width */
.footer-column {
  flex: 1 1 200px;
  min-width: 180px;
}

/* Heading style for each footer section */
.footer-column h4 {
  font-size: 1.5rem;
  margin-bottom: 10px;
  color: #141687;
}

/* Unordered list style reset */
.footer-column ul {
  list-style: none;
  padding: 0;
}

/* Space between each list item link */
.footer-column ul li {
  margin-bottom: 8px;
}

/* Link style: subtle color with smooth hover transition */
.footer-column ul li a {
  text-decoration: none;
  color: #ccc;
  transition: color 0.3s;
}

/* On hover, make links fully white */
.footer-column ul li a:hover {
  color: #fff;
}

/* Social icon style: size, spacing, and color */
.social-icons a {
  font-size: 1.5rem;
  margin-right: 15px;
  color: #ccc;
  transition: color 0.3s;
}

/* On hover, change social icon color to orange */
.social-icons a:hover {
  color: #f83737;
}

/* Bottom line of the footer: centered and subtle */
.footer-bottom {
  text-align: center;
  margin-top: 30px;
  color: #777;
  font-size: 0.9rem;
}

/* Responsive styles for smaller screens */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    height: auto;
  }

  .logo {
    margin-bottom: 1rem;
  }

  .nav-links {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    width: 100%;
    padding: 0.8rem 0;
  }

  .card-container {
    flex-direction: column; /* Stack cards vertically */
    align-items: center; /* Center cards in column */
  }

  .card {
    width: 90%;        
    max-width: 350px;  
    height: auto;       
    aspect-ratio: 1 / 1;
    margin-bottom: 20px;
  }

  .footer-container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .social-icons {
    justify-content: center;
  }
}

/* Responsive styles for contact cards */
@media (max-width: 1000px) {
  .contact-cards {
    flex-direction: column;
    align-items: center;
  }
  .card {
    width: 90%;
    margin-bottom: 2rem;
  }
}