body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    background: rgba(255, 255, 255, 0.9);
    color: #007bff;
    text-align: center;
    padding: 2rem 1rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    margin: 0;
    font-weight: 300;
    letter-spacing: 1px;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav ul li a {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

nav ul li a:hover {
    background-color: #007bff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.3);
}

main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    margin-bottom: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 300;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background: #007bff;
    color: white;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.btn:hover {
    background: #0056b3;
    transform: scale(1.05);
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.4);
}

section {
    margin-bottom: 3rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

section:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease-out forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

footer {
    text-align: center;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.8);
    color: white;
}

.login-form {
    max-width: 400px;
    margin: 0 auto;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.login-form h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.login-form form {
    display: flex;
    flex-direction: column;
}

.login-form label {
    margin-top: 1rem;
    font-weight: 500;
}

.login-form input {
    padding: 0.5rem;
    margin-top: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    transition: border-color 0.3s ease;
}

.login-form input:focus {
    border-color: #007bff;
    outline: none;
}

.login-form button {
    margin-top: 1rem;
    padding: 0.75rem;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.login-form button:hover {
    background: #0056b3;
}

#errorMessage {
    color: red;
    text-align: center;
    margin-top: 1rem;
}

.item {
    background: rgba(255, 255, 255, 0.8);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.item h4 {
    margin-top: 0;
}