/*
Theme Name: Nội Thất Ô Tô Yên Bái
Theme URI: https://noithatotoyenbai.com
Author: Mochi
Description: Giao diện chuẩn SEO màu xanh gradient cho Nội thất ô tô Yên Bái
Version: 1.1
*/
:root {
    --primary-color: #2b9348;
    --primary-dark: #007f5f;
    --primary-light: #55a630;
    --text-color: #333;
    --bg-color: #f8f9fa;
}
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    margin: 0;
    line-height: 1.6;
}
a { text-decoration: none; color: var(--primary-dark); }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}
.site-header {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: relative;
    z-index: 100;
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.site-title a {
    color: white;
    font-size: 24px;
    font-weight: 700;
}
.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 20px;
}
.main-nav a {
    color: white;
    font-weight: 500;
    font-size: 16px;
    transition: opacity 0.3s;
}
.main-nav a:hover {
    opacity: 0.8;
}
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 5px;
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.post-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}
.post-card:hover {
    transform: translateY(-5px);
}
.post-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.post-content {
    padding: 20px;
}
.post-title {
    font-size: 18px;
    margin: 0 0 10px;
}
.read-more {
    display: inline-block;
    margin-top: 15px;
    color: var(--primary-color);
    font-weight: 600;
}
.site-footer {
    background: #111;
    color: #ccc;
    padding: 40px 0 0;
    margin-top: 60px;
}
.footer-cols {
    display: flex;
    gap: 30px;
    padding-bottom: 40px;
}
.footer-col-1 { flex: 4; }
.footer-col-2 { flex: 8; }
.copyright {
    background: #050505;
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
    color: #888;
}
.copyright p { margin: 0; }

/* Mobile Menu Styles */
@media (max-width: 768px) {
    .mobile-menu-btn { 
        display: block; 
    }
    .main-nav { 
        display: none; 
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        padding: 10px 0;
        z-index: 99;
    }
    .main-nav.active {
        display: block;
        animation: slideDown 0.3s ease-out;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    .main-nav li {
        border-bottom: 1px solid #f0f0f0;
    }
    .main-nav li:last-child {
        border-bottom: none;
    }
    .main-nav a {
        color: var(--text-color);
        display: block;
        padding: 15px 20px;
    }
    .main-nav a:hover {
        background: #f8f9fa;
        color: var(--primary-dark);
    }
    .footer-cols { flex-direction: column; }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}