/* Define Variables */
:root {
  /* Colors */
  --footer-background-color: #1f2641;
  --text-color: #333;
  --footer-text-color: #fff;
  --link-color: #ddd;
  --link-hover-bg: #333;
  --icon-color: #007bff;
  --icon-hover-bg: #0056b3;
  --footer-title-color: #f1f1f1;
  --border-color: #444;

  /* Font Sizes */
  --font-size-body: 1rem;
  --font-size-small: 0.8rem;
  --font-size-footer-title: 1.2rem;
  --font-size-footer-link: 0.95rem;
  --font-size-icon: 1.5rem;

  /* Spacing */
  --padding-body: 2rem 1rem;
  --padding-footer-link: 0.5rem 1rem;
  --padding-scroll-btn: 0.5rem;

  /* Radius */
  --border-radius: 4px;
  --border-radius-btn: 50%;

  /* Transition */
  --transition-ease: 0.3s ease;
  --transition-transform: 0.4s ease-out;
  --transition-shadow: 0.3s ease-in-out;
}

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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
}

.footer {
  background-color: var(--footer-background-color);
  color: var(--footer-text-color);
  padding: var(--padding-body);
  font-size: var(--font-size-body);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15); /* Add a subtle shadow */
  border-radius: 12px;
}

.footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 2rem;
}

.footer-section {
  flex: 1 1 200px;
  min-width: 250px;
  text-align: center;
  transition: transform var(--transition-ease),
    box-shadow var(--transition-shadow);
  border-radius: 8px; /* Add border-radius for soft corners */
}

.footer-section:hover {
  transform: translateY(-5px) scale(1.05); /* Hover effect for 3D feel */
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2); /* Shadow for depth */
}

.footer-section h2 {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-footer-title);
  margin-bottom: 1rem;
  color: var(--footer-title-color);
}

.footer-section h2 i {
  margin-right: 0.5rem;
}

.footer-section p {
  margin-bottom: 1rem;
  font-size: var(--font-size-footer-link);
}

.footer-section ul {
  list-style: none;
  padding-left: 0;
  margin-top: 1rem;
}

.footer-section ul li {
  margin-bottom: 0.75rem;
}

.footer-section ul li a {
  color: var(--link-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: var(--padding-footer-link);
  border-radius: var(--border-radius);
  transition: background-color var(--transition-ease),
    color var(--transition-ease), transform var(--transition-ease);
}

.footer-section ul li a i {
  font-size: var(--font-size-footer-title);
  color: var(--icon-color);
}

.footer-section ul li a:hover,
.footer-section ul li a:active,
.footer-section ul li a:focus {
  background-color: var(--link-hover-bg);
  color: var(--footer-text-color);
  transform: translateX(5px); /* Hover effect on links */
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
  font-size: var(--font-size-small);
}

/* Scroll to Top Button */
#scrollTopBtn {
  background-color: var(--icon-color);
  color: var(--footer-text-color);
  border: none;
  border-radius: var(--border-radius-btn);
  font-size: var(--font-size-icon);
  padding: var(--padding-scroll-btn);
  cursor: pointer;
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: none;
  transition: opacity var(--transition-ease), transform var(--transition-ease);
}

#scrollTopBtn:hover {
  background-color: var(--icon-hover-bg);
  transform: translateY(-3px); /* Hover effect for scroll button */
}

/* Responsive */
@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }

  .footer-section {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: background-color var(--transition-ease);
  }

  .footer-section:active,
  .footer-section:focus {
    background-color: var(--link-hover-bg);
  }

  .footer-section h2 {
    font-size: calc(var(--font-size-footer-title) - 0.1rem);
    margin-bottom: 0.5rem;
  }

  .footer-section ul li a {
    justify-content: center;
    padding: 0.5rem;
    border-radius: var(--border-radius);
  }

  .footer-bottom {
    padding: 1rem;
    font-size: var(--font-size-small);
  }
}

/* 3D Effect on Icon Hover */
.footer-section ul li a i:hover {
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

/* Footer Section Link Hover Effects */
.footer-section ul li a:hover,
.footer-section ul li a:active,
.footer-section ul li a:focus {
  background-color: var(--link-hover-bg);
  color: var(--footer-text-color);
}

/* Responsive */
@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }

  .footer-section {
    text-align: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: background-color var(--transition-ease);
  }

  .footer-section:active,
  .footer-section:focus {
    background-color: var(--link-hover-bg);
  }

  .footer-section h2 {
    font-size: calc(var(--font-size-footer-title) - 0.1rem);
    margin-bottom: 0.5rem;
  }

  .footer-section ul li a {
    justify-content: center;
    padding: 0.5rem;
    border-radius: var(--border-radius);
  }

  .footer-bottom {
    padding: 1rem;
    font-size: var(--font-size-small);
  }
}