/* ==========================================
 1. GLOBAL RESET & BASE STYLES
 ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body {
    background-color: #f8f9fa;
    color: #333333;
    line-height: 1.6;
}
button.lang-switch {
    background-color: rgba(255,255,255,0.1);
    color: #ffffff;
    padding: 0.3rem 0.6rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    margin-left: 1.5rem;
    transition: background-color 0.3s;
}
button.lang-switch:hover {
    background-color: rgba(255,255,255,0.25);
    color: #f28c28;
}

/* ==========================================
 2. REUSABLE COMPONENTS & BUTTONS
 ========================================== */
h2 {
    text-align: center;
    font-size: 2rem;
    color: #0b2240; /* Brand Navy */
    margin-bottom: 2rem;
}
.btn-orange {
    background-color: #f28c28; /* Brand Orange */
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    text-align: center;
    transition: background 0.3s;
}
.btn-orange:hover {
    background-color: #d9771e;
}

/* --- Hero Button Custom Containers --- */
.button-container {
    display: flex;
    gap: 15px; 
    align-items: center;
    justify-content: center;
    margin-top: 1.5rem;
}
.btn-freight {
    background-color: #f58220;
    color: #ffffff;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    transition: background 0.3s;
}
.btn-freight:hover {
    background-color: #d9771e;
}
.btn-whatsapp, .btn-wechat {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    transition: all 0.3s;
}
.btn-whatsapp:hover, .btn-wechat:hover {
    background-color: #ffffff;
    color: #0b2240;
}

/* ==========================================
 3. NAVIGATION HEADER
 ========================================== */
header {
    background-color: #0b2240; /* Deep Navy Header */
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    position: sticky;
    top: 0;
    z-index: 1000;
}
header .logo {
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: bold;
    cursor: pointer;
}
header nav {
    display: flex;
    align-items: center;
}
header nav a {
    color: #ffffff;
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.95rem;
    transition: color 0.3s;
}
header nav a:hover {
    color: #f28c28;
}

/* ==========================================
 4. HERO BANNER
 ========================================== */
.hero {
    background: linear-gradient(to bottom, #4f637a, #6c8299);
    color: #ffffff;
    text-align: center;
    padding: 6rem 1rem;
}
.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}
.hero p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}
.hero .sub-services {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

/* ==========================================
 5. HELP SECTION (Split Grid Layout)
 ========================================== */
.help-section {
    padding: 4rem 5%;
}
.help-container {
    display: flex;
    gap: 2rem;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
}
.help-card {
    background-color: #ffffff;
    flex: 1;
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}
.help-card h3 {
    color: #0b2240;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}
.help-card p {
    color: #666666;
    margin-bottom: 1.5rem;
}
.help-card ul {
    list-style: none;
}
.help-card ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: #444444;
}
.help-card ul li::before {
    content: "•";
    color: #0b2240;
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: -2px;
}

/* ==========================================
 6. FOOTER
 ========================================== */
footer {
    background-color: #0b2240;
    color: #ffffff;
    text-align: center;
    padding: 3rem 1rem;
    font-size: 0.9rem;
    margin-top: 4rem;
}
footer p {
    margin-bottom: 0.5rem;
    opacity: 0.9;
}
footer strong {
    font-size: 1.1rem;
}
.footer-links {
    margin-top: 1.5rem;
}
.footer-links a {
    color: #ffffff;
    text-decoration: none;
    margin: 0 0.5rem;
    opacity: 0.8;
}
.footer-links a:hover {
    opacity: 1;
    color: #f28c28;
}

/* ==========================================
 7. WECHAT INTERACTIVE MODAL POP-UP
 ========================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    align-items: center;
    justify-content: center;
}
.modal-content {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    max-width: 320px;
    width: 90%;
    position: relative;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
}
.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    font-weight: bold;
    color: #999999;
    text-decoration: none;
    cursor: pointer;
}
.close-btn:hover {
    color: #333333;
}
.wechat-qr {
    width: 180px;
    height: 180px;
    background-color: #eeeeee;
    margin: 1rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #cccccc;
    font-size: 0.85rem;
    color: #666666;
}
.modal:target {
    display: flex;
}

/* ==========================================
 8. MOBILE RESPONSIVENESS
 ========================================== */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    header nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem;
    }
    header nav a, button.lang-switch {
        margin-left: 0;
        font-size: 0.85rem;
    }
    .hero h1 {
        font-size: 2rem;
    }
    .button-container, .help-container {
        flex-direction: column;
        width: 100%;
        padding: 0 1rem;
        gap: 10px;
    }
    .btn-freight, .btn-whatsapp, .btn-wechat, .btn-orange {
        width: 100%;
        text-align: center;
    }
}