/* Google Font */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  transition: 0.3s ease-in-out;
}

/* Light Mode Colors */
:root {
  --bg: #f5f5f5;
  --text: #111;
  --card-bg: rgba(255, 255, 255, 0.7);
  --shadow: rgba(0, 0, 0, 0.1);
  --button-bg: #111;
  --button-text: #fff;
}

/* Dark Mode Colors */
.dark {
  --bg: #0d0d0d;
  --text: #fff;
  --card-bg: rgba(30, 30, 30, 0.6);
  --shadow: rgba(255, 255, 255, 0.1);
  --button-bg: #fff;
  --button-text: #111;
}

.navbar {
  width: 100%;
  padding: 15px;
  text-align: center;
  backdrop-filter: blur(10px);
  background: var(--card-bg);
  box-shadow: 0 5px 20px var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar a {
  color: var(--text);
  margin: 0 15px;
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s;
}

.navbar a:hover {
  color: #3498db;
}

.container {
  width: 90%;
  max-width: 800px;
  margin: 40px auto;
  padding: 25px;
  border-radius: 15px;
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  box-shadow: 0 5px 20px var(--shadow);
  animation: fadeIn 0.6s ease;
}

/* Inputs */
input, textarea, select {
  width: 100%;
  padding: 12px;
  margin: 15px 0;
  border-radius: 10px;
  border: 1px solid #ccc;
  background: rgba(255,255,255,0.4);
  outline: none;
  transition: 0.3s;
}

.dark input, .dark textarea {
  background: rgba(50,50,50,0.7);
  border: 1px solid #444;
  color: #fff;
}

button {
  background: var(--button-bg);
  color: var(--button-text);
  padding: 12px 15px;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-weight: 500;
  transition: 0.3s;
}

button:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px var(--shadow);
}

/* Fade-in Animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dark/Light Button */
.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--button-bg);
  color: var(--button-text);
  border-radius: 50%;
  width: 45px;
  height: 45px;
  font-size: 20px;
  border: none;
  cursor: pointer;
  transition: 0.3s;
}

.theme-toggle:hover {
  transform: scale(1.1);
}
.output-box {
  margin-top: 15px;
  padding: 15px;
  background: rgba(0,0,0,0.1);
  border-radius: 10px;
  font-weight: 500;
  backdrop-filter: blur(10px);
  transition: 0.3s;
}

.dark .output-box {
  background: rgba(255,255,255,0.1);
}