:root {
  --background-image: url("images/background2.jpg");
  --slider-bg-color: #2f4156;
  --slider-circle-color: black;
  --text-color: black;
  --box-bg-color: #567C8D;
  --box-bg-hover-color: #98becf;
  --background-color: #021023;
}

[data-theme="light"] {
  --background-image: url("images/background light.png");
  --slider-bg-color: #c9b8ae;
  --slider-circle-color: #ffffff;
  --text-color: black;
  --box-bg-color: #f5efeb;
  --box-bg-hover-color: #c9b8ae;
  --background-color: #f1f1f1;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-image: var(--background-image);
  background-size: cover;
  transition: background-image 0.3s;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 20px;
  background-color: var(--background-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  width: 100%;
  z-index: 1000;
}

/* Logo */
.logo img {
  height: 50px;
  width: auto;
}
/* Navigation */
nav {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

nav a {
  color: #736f7e;
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
}

nav a:hover {
  color: #e4da2b;
}

/* Toggle Mode */
.mode-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
}
.mode-btn {
  padding: 8px 16px;
  border-radius: 8px;
  background: linear-gradient(45deg, #021023, #0c1b61); 
  border: none;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: background-color 0.3s;
}

.menu-toggle {
  display: none;
  font-size: 28px;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
}
/* Form */
.container_form {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  box-shadow: 0px 6px 6px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin: 100px auto;
  padding: 30px;
  width: 300px;
  text-align: center;
}

.input,
.submit_btn {
  background: var(--box-bg-color);
  border-radius: 20px;
  box-shadow: 0px 6px 6px rgba(0, 0, 0, 0.5);
  padding: 5px;
}

.submit_btn:hover {
  background-color: var(--box-bg-hover-color);
}

.input_box {
  display: flex;
  align-items: center;
  padding: 5px;
  margin-bottom: 10px;
}

::placeholder {
  color: black;
}

.link {
  color: black;
  font-size: 14px;
}

.link:hover {
  color: rgb(104, 32, 192);
}

/* Footer */
footer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  background-color: var(--background-color);
  font-family: sans-serif;
}

.footer_top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 50px;
  padding-top: 6px;
  padding-bottom: 6px;
}

footer a {
  color: #736f7e;
  text-decoration: none;
  font-size: 18px;
  font-weight: bold;
}

footer a:hover {
  color: #e4da2b;
}

footer p {
  color: #736f7e;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-bottom: 10px;
}
/* light mode */
body[data-theme="light"] nav.active {
  background-color: #f1f1f1; 
}

body[data-theme="light"] .mode-btn {
  background: linear-gradient(45deg, #ddd, #fff); 
  color: #000; 
  border: 1px solid #999;
}


/* Media Query */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  nav {
    display: none;
    flex-direction: column;
    width: 100%;
    background-color: #021023;
    margin-top: 10px;
    padding: 10px 0;
  }

  nav.active {
    display: flex;
  }

  nav a {
    padding: 10px 20px;
    border-top: 1px solid #444;
  }

  header {
    align-items: flex-start;
  }

   .mode-btn {
    width: 100%;
    text-align: center;
  }
}