/* Base Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: #f4f7fa;
  color: #333;
  transition: all 0.3s ease;
}

.dark-mode {
  background: #1e1e2f;
  color: #eee;
}

/* Header */
header {
  background: linear-gradient(to right, #1abc9c, #3498db);
  color: #fff;
  text-align: center;
  padding: 3rem 1rem;
  border-radius: 0 0 50% 50% / 0 0 10% 10%;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

header h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
}

header p {
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.toggle-btn {
  padding: 0.5rem 1rem;
  border: none;
  background: #fff;
  color: #1abc9c;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

/* Navigation */
nav {
  background: #fff;
  display: flex;
  justify-content: center;
  gap: 2rem;
  padding: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav a {
  color: #1abc9c;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.3s;
}

nav a:hover {
  color: #16a085;
}

/* Section */
section {
  max-width: 1000px;
  margin: auto;
  padding: 3rem 2rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  position: relative;
  color: #2c3e50;
}

h2::after {
  content: '';
  width: 50px;
  height: 4px;
  background: #1abc9c;
  position: absolute;
  bottom: -10px;
  left: 0;
  border-radius: 2px;
}

/* Content Boxes */
.project, .about {
  background: #fff;
  padding: 2rem;
  margin-top: 1.5rem;
  border-radius: 10px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.05);
}

.dark-mode .project, 
.dark-mode .about {
  background: #2a2a40;
  color: #ddd;
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem;
  background: #ecf0f1;
  font-size: 0.9rem;
}

.dark-mode footer {
  background: #111;
  color: #bbb;
}

/* Links */
a {
  color: #1abc9c;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
                              }
form {
    max-width: 400px;
    margin: 50px auto;
    padding: 30px;
    background-color: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

form h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #004d66;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #333;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

input[type="submit"] {
    width: 100%;
    background-color: #007acc;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: #005f99;
}