.password-option {
    margin-bottom: 20px;
    padding-bottom: 20px;
}

.password-title {
    font-family: Microsoft YaHei;
	font-weight: 400;
	font-size: 16px;
	line-height: 28px;
	color: rgba(22, 48, 105, 1);

}


input[type="password"] {
    width:240px;
    height:40px;
    border: 1px solid #ddd;
    font-size: 16px;
    transition: border-color 0.3s;
    background: rgba(245, 245, 245, 1);
    
}

input[type="password"]:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
    background: white;
    
}

button {
	height:40px;
	width:120px;
    background: rgba(32, 68, 147, 1);
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
    font-family: Microsoft YaHei;
	font-weight: 400;
	font-size: 16px;
	line-height: 100%;
	text-align: center;
    
}

button:hover {
    background: #000382;
    color: white;
}

.image-item{
	width:100%;
	height:100%;
}

/*
	loading letter
*/
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid #3498db;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}
.loading-text {
    display: none;
    text-align: center;
    padding: 20px;
    flex: 1;
    order: 1;
    width:50%;
}

.letter-list {
    display: none;
    padding: 20px;
    flex: 1;
    order: 1;
    width:50%;
}

.letter-header {
    display: flex;
    align-items: center;
    margin-bottom: 25px;
}

.back-button {
    background: #95a5a6;
    margin-right: 15px;
}

.back-button:hover {
    background: #7f8c8d;
}

.letter-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    margin-bottom: 15px;
    transition: transform 0.2s;
    width:510px;
    height:47px;
    border-bottom: 1px solid #eaeaea;
}

.letter-name {
    color: #2c3e50;
    font-family: Microsoft YaHei;
	font-weight: 400;
	font-size: 16px;
	line-height: 24px;
    
}

.download-btn {
    background: rgba(32, 68, 147, 1);
    padding: 8px 15px;
    width:140px;
    height:40px;
    font-family: Microsoft YaHei;
	font-weight: 400;
	font-size: 16px;
	line-height: 24px;
	text-align: center;
    color:white;
}

.download-btn:hover {
    background: #000382;
    color: white;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.modal h2 {
    color: #e74c3c;
    margin-bottom: 15px;
}

.modal p {
    margin-bottom: 20px;
}

.modal button {
    background: #3498db;
}