/* Common site styles for LUYISI Trade */
:root {
    --primary-blue: #0d47a1;
    --accent-blue: #1976d2;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-gray: #f4f7f6;
    --white: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

/* Header and navigation */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
    align-items: center;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    font-weight: 600;
    color: var(--primary-blue);
    transition: color 0.3s;
    padding: 10px 0;
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--accent-blue);
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--white);
    min-width: 240px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    border-top: 3px solid var(--accent-blue);
    list-style: none;
    padding: 10px 0;
}

.dropdown-content li a {
    color: var(--text-dark);
    padding: 12px 20px;
    display: block;
    font-size: 14px;
    font-weight: normal;
}

.dropdown-content li a:hover,
.dropdown-content li a:focus {
    background-color: var(--bg-gray);
    color: var(--primary-blue);
}

.dropdown:hover .dropdown-content,
.dropdown:focus-within .dropdown-content {
    display: block;
}

/* Shared buttons */
.btn-primary,
.btn-white,
.btn-outline {
    font-weight: bold;
    border-radius: 5px;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary,
.btn-white {
    background-color: var(--white);
    color: var(--primary-blue);
    padding: 15px 40px;
    font-size: 18px;
}

.btn-primary:hover,
.btn-white:hover,
.btn-primary:focus,
.btn-white:focus {
    background-color: var(--accent-blue);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline {
    padding: 12px 35px;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
    border-radius: 4px;
}

.btn-outline:hover,
.btn-outline:focus {
    background-color: var(--primary-blue);
    color: var(--white);
}

/* Footer */
footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 60px 5% 30px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding-bottom: 40px;
}

.footer-col {
    flex: 1;
}

.footer-col h4 {
    margin-bottom: 25px;
    font-size: 18px;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 10px;
}

.footer-col li a {
    color: #ccc;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-col li a:hover,
.footer-col li a:focus {
    color: var(--white);
}

.footer-contact-item {
    color: #ccc;
    font-size: 14px;
}

.copyright {
    text-align: center;
    font-size: 13px;
    color: #888;
}

@media (max-width: 992px) {
    .footer-container {
        flex-wrap: wrap;
        gap: 30px;
    }
    .footer-col {
        min-width: 200px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .footer-container {
        flex-direction: column;
        gap: 30px;
    }
}

/* =========================
   Mobile Header Hamburger Menu
   Added for brand-color mobile navigation
========================= */
.menu-toggle {
    display: none;
    width: 74px;
    height: 74px;
    border: none;
    background: var(--primary-blue);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
    padding: 0;
}

.menu-toggle span {
    display: block;
    width: 30px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.25s ease;
}

@media (max-width: 768px) {
    header.site-header {
        padding: 12px 5%;
        min-height: 88px;
    }

    header.site-header .logo img {
        height: 56px;
        width: auto;
    }

    header.site-header .menu-toggle {
        display: inline-flex;
        flex-shrink: 0;
    }

    header.site-header .menu-toggle.active span:nth-child(1) {
        transform: translateY(11px) rotate(45deg);
    }

    header.site-header .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    header.site-header .menu-toggle.active span:nth-child(3) {
        transform: translateY(-11px) rotate(-45deg);
    }

    header.site-header nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        border-top: 1px solid #ececec;
        border-bottom: 1px solid #ececec;
        box-shadow: 0 10px 20px rgba(0,0,0,0.06);
    }

    header.site-header nav.nav-open {
        display: block;
    }

    header.site-header .nav-links {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    header.site-header .nav-links > li {
        border-bottom: 1px solid #f0f0f0;
    }

    header.site-header .nav-links > li:last-child {
        border-bottom: none;
    }

    header.site-header .nav-links a {
        display: block;
        padding: 16px 20px;
        font-size: 16px;
    }

    header.site-header .dropdown-content {
        display: none;
        position: static;
        border: none;
        box-shadow: none;
        margin: 0;
        padding: 0;
        background: var(--bg-gray);
        min-width: auto;
    }

    header.site-header .dropdown.open .dropdown-content,
    header.site-header .dropdown:hover .dropdown-content,
    header.site-header .dropdown:focus-within .dropdown-content {
        display: block;
    }

    header.site-header .dropdown-content li a {
        padding: 14px 32px;
        font-size: 14px;
    }
}