* {
    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%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(10px);
}

.logo {
    text-align: center;
    margin-bottom: 2rem;
}

    .logo h1 {
        color: #333;
        font-size: 2rem;
        font-weight: 600;
        margin-bottom: 0.5rem;
    }

    .logo p {
        color: #666;
        font-size: 0.9rem;
    }

.form-group {
    margin-bottom: 1.5rem;
}

    .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        color: #333;
        font-weight: 500;
    }

    .form-group input {
        width: 100%;
        padding: 0.8rem 1rem;
        border: 2px solid #e1e5e9;
        border-radius: 10px;
        font-size: 1rem;
        transition: all 0.3s ease;
        background: #f8f9fa;
    }

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

.login-button {
    width: 100%;
    padding: 0.8rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

    .login-button:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
    }

    .login-button:active {
        transform: translateY(0);
    }

    .login-button:disabled {
        opacity: 0.7;
        cursor: not-allowed;
        transform: none;
    }

.loading {
    display: none;
    text-align: center;
    color: #666;
    margin-top: 1rem;
}

.message {
    padding: 0.8rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 500;
    display: none;
}

    .message.success {
        background: #d4edda;
        color: #155724;
        border: 1px solid #c3e6cb;
    }

    .message.error {
        background: #f8d7da;
        color: #721c24;
        border: 1px solid #f5c6cb;
    }

.spinner {
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 10px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.footer {
    text-align: center;
    margin-top: 2rem;
    color: #666;
    font-size: 0.8rem;
}