* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 40px 35px;
    border-radius: 16px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 380px;
    text-align: center;
}

.login-container h2 {
    font-size: 28px;
    margin-bottom: 8px;
    color: #333;
}

.login-container p {
    color: #666;
    margin-bottom: 30px;
    font-size: 15px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

input {
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s;
}

input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

button {
    padding: 14px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 17px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    margin-top: 10px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(102, 126, 234, 0.3);
}

.error {
    color: #e74c3c;
    background: #fdf2f2;
    padding: 12px;
    border-radius: 8px;
    border-left: 4px solid #e74c3c;
    font-size: 14px;
    margin-bottom: 15px;
}