:root {
  --bg-color: #ffffff;
  --text-color: #111111;
  --menu-color: #f0f0f0;
}

[data-theme="dark"] {
  --bg-color: #111111;
  --text-color: #ffffff;
  --menu-color: #222222;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 1s, color 1s;
  overflow-x: hidden;
}

header {
  font-family: 'Barlow Semi Compressed', sans-serif;
  font-weight: 700;
  display: flex;
  align-items: center;
  margin: 1.5%;
}

nav {
  display: flex;
  padding-left: 2%;
}

nav a {
  padding: 1.5%;
  position: relative;
  top: 6%;
  transition: 1s;
  color: var(--text-color);
  text-decoration: none;
}

nav a:hover {
  transform: translate(-20);
}

.main-hero-title {
  font-size: 3.6rem;
  line-height: 1.1;
  letter-spacing: -0.05em;
  padding: 0%;
}

#theme-toggle {
  position: relative;
  width: 7%;
  height: 2%;
  margin: 1.5%;
  top: 4%;
  left: 52%;
}

/* Menu toggle button */
#menu-toggle {
  display: none;
  position: fixed;
  top: 15px;
  right: 15px;
  z-index: 1001;
  font-size: 18px;
  padding: 10px 15px;
  background: var(--bg-color);
  border: 1px solid #ccc;
  border-radius: 5px;
  cursor: pointer;
  color: var(--text-color);
}

/* Side menu */
#side-menu {
  display: flex;
  position: fixed;
  top: 0;
  right: -220px;
  width: 200px;
  height: 100%;
  background: var(--menu-color);
  box-shadow: -2px 0 5px rgba(0, 0, 0, 0.2);
  padding-top: 60px;
  flex-direction: column;
  gap: 10px;
  z-index: 1000;
  transition: right 0.3s ease;
}

#side-menu.open {
  right: 0;
}

#side-menu a {
  color: var(--text-color);
  padding: 12px 20px;
  border-bottom: 1px solid #ddd;
  text-decoration: none;
}

@media (max-width: 615px) {
  header nav {
    display: none;
  }

  #menu-toggle {
    display: block;
  }
}
    
/* Footer placement */
footer {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

/* Toggle switch style */
.switch {
  position: relative;
  display: inline-block;
  width: 60px;
  height: 34px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #ccc;
  transition: 0.4s;
  border-radius: 34px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 26px;
  width: 26px;
  left: 4px;
  bottom: 4px;
  background-color: var(--bg-color);
  transition: 0.4s;
  border-radius: 50%;
}

input:checked + .slider {
  background-color: #666;
}

input:checked + .slider:before {
  transform: translateX(26px);
}