/* --- Global Styles (Taiwan / Traditional Chinese) --- */
body {
    /* distinct background color for Taiwan page (Alice Blue) */
    background-color: #F0F8FF; 
    
    /* Keeping your background image */
    background-image: url('../zhongfu_61.jpg'); 
    background-repeat: no-repeat;
    background-position: right top;
    background-attachment: fixed; /* Fixed on PC */
    
    /* Traditional Chinese Fonts */
    font-family: "Microsoft JhengHei", "PingFang TC", sans-serif;
    color: #333;
    margin: 0;
    padding: 20px;
    padding-right: 140px; /* Space for the background image on PC */
    line-height: 1.6;
}

/* Responsive fix for mobile */
@media (max-width: 768px) {
    body {
        /* FIX FOR MOBILE: */
        background-attachment: scroll; 
        background-position: top right; 
        background-size: 80px auto;     
        
        padding-right: 20px; 
        margin-right: 0;
    }
}

h1, h2, h3, h4 {
    color: #003366; /* Changed to a Deep Blue for Taiwan/Engineering feel, or keep Red if preferred. I set it to Blue to distinguish from CN Red. */
}

/* Links */
a {
    color: #003366; /* Matching deep blue link color */
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Form Styles */
.contact-section {
    background-color: rgba(255, 255, 255, 0.8); 
    padding: 20px;
    border-radius: 8px;
    max-width: 600px;
    margin-top: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-weight: bold;
    margin-bottom: 5px;
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.submit-button {
    background-color: #003366; /* Blue button for Taiwan theme */
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

.submit-button:hover {
    background-color: #002244;
}

#form-status {
    margin-top: 15px;
    font-weight: bold;
}

/* Footer */
.footer {
    margin-top: 50px;
    text-align: center;
    font-size: 0.9em;
    color: #666;
    border-top: 1px solid #ccc;
    padding-top: 10px;
}

/* --- Language Toggle & Flag System (Identical structure, different colors tailored for this theme) --- */

.lang-toggle-container {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 15px; 
    margin-bottom: 25px;
    padding: 8px;
    background-color: rgba(240, 248, 255, 0.6); /* Matches body bg */
    border-radius: 4px;
    width: fit-content;
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 6px; 
    padding: 6px 12px;
    border-radius: 4px;
    text-decoration: none; 
    font-size: 0.95em;
    font-weight: bold;
    transition: all 0.3s ease; 
}

.flag-icon {
    width: 32px; 
    height: auto;
    vertical-align: middle;
    box-shadow: 1px 1px 3px rgba(0,0,0,0.2); 
}

/* Active State (Taiwan Flag) */
.active-lang {
    border: 2px solid #DAA520; /* Gold Border */
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
    opacity: 1;
    cursor: default;
}

/* Inactive State (Link to China Page) */
.inactive-lang {
    border: 2px solid transparent; 
    color: #666;
    opacity: 0.7; 
    cursor: pointer;
}

.inactive-lang:hover {
    opacity: 1; 
    background-color: rgba(255, 255, 255, 0.6);
    color: #003366; /* Blue hover text */
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}