/*
Theme Name: Xoso66
Theme URI: https://xoso66.com
Author: XOSO66 Team
Author URI: https://xoso66.com
Description: Chủ đề WordPress chuyên về đồ chơi XOSO66 - Thiết kế hiện đại, tối ưu SEO, tốc độ cao
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: xoso66-toys
Tags: e-commerce, toys, entertainment, responsive, seo-optimized
*/

/* ===================================
   CSS Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* ===================================
   Layout & Container
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.col {
    flex: 1;
    padding: 0 15px;
}

/* ===================================
   Header Styles
   =================================== */
.site-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: rgba(0,0,0,0.2);
    padding: 8px 0;
    font-size: 14px;
}

.header-main {
    padding: 20px 0;
}

.site-logo img {
    max-height: 60px;
    width: auto;
}

.site-title {
    font-size: 28px;
    font-weight: bold;
    color: #fff;
    text-decoration: none;
}

/* ===================================
   Navigation
   =================================== */
.main-navigation {
    position: relative;
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: 5px;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 12px 20px;
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 5px;
}

.nav-menu a:hover,
.nav-menu .current-menu-item a {
    background: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: 2px solid #fff;
    color: #fff;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 18px;
    border-radius: 5px;
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: #fff;
    color: #667eea;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: #667eea;
}

/* ===================================
   Content Sections
   =================================== */
.section {
    padding: 60px 0;
}

.section-title {
    font-size: 36px;
    text-align: center;
    margin-bottom: 20px;
    color: #667eea;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 50px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   Product Grid
   =================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.product-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-info {
    padding: 20px;
}

.product-title {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.product-price {
    font-size: 22px;
    color: #667eea;
    font-weight: bold;
}

/* ===================================
   Features
   =================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 30px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: #667eea;
}

/* ===================================
   Footer
   =================================== */
.site-footer {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-widget h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #667eea;
}

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

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

.footer-widget a {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-widget a:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 14px;
    opacity: 0.7;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #667eea;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    }

    .nav-menu.active {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .product-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }

    .btn {
        padding: 12px 25px;
        font-size: 14px;
    }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none;
}