* {
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    margin: 0;
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
    transition: margin-left 0.3s ease;
}

.sidebar {
    width: 200px;
    height: 100vh;
    background-color: #333;
    padding-top: 20px;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    overflow-x: hidden;
    overflow-y: auto;
    transition: width 0.3s ease, transform 0.3s ease;
}

.sidebar.collapsed {
    width: 0;
    padding-top: 0;
}

.sidebar ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
    width: 200px;
}

.sidebar ul li {
    padding: 15px;
    text-align: center;
}

.sidebar ul li a {
    color: white;
    text-decoration: none;
    display: block;
    white-space: nowrap;
}

.sidebar ul li a:hover {
    background-color: #555;
}

.content {
    margin-left: 220px;
    padding: 20px;
    width: calc(100% - 220px);
    max-width: 100%;
    transition: margin-left 0.3s ease, width 0.3s ease;
}

.sidebar.collapsed ~ .content,
.content.collapsed {
    margin-left: 0;
    width: 100%;
    padding-top: 60px;
}

.toggle-btn {
    position: fixed;
    top: 15px;
    left: 200px; /* 初始位置 */
    width: auto !important;
    background: #333 !important;
    color: white !important;
    border: none;
    padding: 10px 14px !important;
    font-size: 20px !important;
    cursor: pointer;
    z-index: 1001;
    border-radius: 0 6px 6px 0 !important;
    transition: left 0.3s ease;
}

.sidebar.collapsed ~ .toggle-btn {
    left: 0;
}

.welcome-message {
    background-color: #d9a679;
    color: #ffffff;
    font-weight: bold;
    font-size: 1.1em;
    padding: 10px 15px;
    border-radius: 8px;
    text-align: center;
    margin: 10px 8px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 當側邊欄收縮時 ，隱藏歡迎訊息 */
.sidebar.collapsed .welcome-message {
    display: none;
}

/* 手機遮罩層 (展開側邊欄時點擊外部可收合) */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 999;
}

/* 全域 RWD 手機與平板自適應樣式 */
@media (max-width: 768px) {
    .content {
        margin-left: 0 !important;
        width: 100% !important;
        padding: 60px 12px 20px 12px !important;
    }

    .sidebar:not(.collapsed) ~ .sidebar-backdrop {
        display: block;
    }

    .container {
        width: 100% !important;
        max-width: 100% !important;
        padding: 10px 5px !important;
    }

    .input-group {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 6px !important;
        margin-bottom: 12px !important;
    }

    .input-group label {
        width: 100% !important;
        text-align: left !important;
        margin-right: 0 !important;
        font-weight: bold;
    }

    .input-group input,
    .input-group select,
    .search-container input[type="text"],
    .search-container input[type="password"] {
        width: 100% !important;
        height: 40px !important;
        font-size: 16px !important;
        box-sizing: border-box !important;
    }

    .content button,
    .content input[type="submit"] {
        min-height: 42px;
        font-size: 16px;
    }

    #result {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        word-break: break-word;
    }