/*
Theme Name: XOSO66 Theme
Theme URI: https://xoso66.com
Author: XOSO66 Team
Author URI: https://xoso66.com
Description: XOSO66 - Nền tảng cá cược xổ số hàng đầu Việt Nam
Version: 1.0.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: xoso66
*/

/* Reset CSS */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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: #f5f5f5;
}

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

ul, ol {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.site-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.site-branding {
    display: flex;
    align-items: center;
}

.site-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffd700;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.site-title span {
    color: #ff6b35;
}

/* Navigation */
.main-navigation {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-menu a {
    color: #fff;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.nav-menu a:hover {
    background-color: #ff6b35;
    color: #fff;
}

.nav-menu .current-menu-item a {
    background-color: #ffd700;
    color: #1a1a2e;
}

/* Header Buttons */
.header-buttons {
    display: flex;
    gap: 15px;
    margin-left: 30px;
}

.btn {
    padding: 10px 24px;
    border-radius: 25px;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-login {
    background-color: transparent;
    color: #fff;
    border: 2px solid #ffd700;
}

.btn-login:hover {
    background-color: #ffd700;
    color: #1a1a2e;
}

.btn-register {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: #fff;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    padding: 150px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,215,0,0.1)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.hero-title .highlight {
    color: #ffd700;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 30px;
    color: #ccc;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #1a1a2e;
    padding: 15px 40px;
    font-size: 1rem;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 215, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    padding: 15px 40px;
    font-size: 1rem;
}

.btn-secondary:hover {
    background: #fff;
    color: #1a1a2e;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 50px;
    color: #1a1a2e;
    text-transform: uppercase;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #ff6b35 0%, #ffd700 100%);
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-top: -30px;
    margin-bottom: 50px;
}

/* Features Section */
.features-section {
    background-color: #fff;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #fff;
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 1px solid #eee;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #ff6b35 0%, #ffd700 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: #fff;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a1a2e;
}

.feature-description {
    color: #666;
    line-height: 1.7;
}

/* Games Section */
.games-section {
    background-color: #f8f9fa;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.game-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.game-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.game-image {
    height: 200px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffd700;
    font-size: 3rem;
}

.game-content {
    padding: 25px;
}

.game-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.game-description {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.game-link {
    color: #ff6b35;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.game-link:hover {
    color: #ffd700;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: #fff;
    text-align: center;
    padding: 100px 0;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.cta-description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-cta {
    background: #fff;
    color: #ff6b35;
    padding: 18px 50px;
    font-size: 1.1rem;
    font-weight: 700;
}

.btn-cta:hover {
    background: #1a1a2e;
    color: #fff;
    transform: translateY(-3px);
}

/* FAQ Section */
.faq-section {
    background-color: #fff;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid #eee;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    background: #f8f9fa;
    padding: 20px 25px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: #e9ecef;
}

.faq-answer {
    padding: 20px 25px;
    color: #666;
    line-height: 1.8;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-item.active .faq-question {
    background: #1a1a2e;
    color: #fff;
}

/* Footer */
.site-footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 60px 0 30px;
}

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

.footer-widget h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #ffd700;
    text-transform: uppercase;
}

.footer-widget p {
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 15px;
}

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

.footer-widget ul li a {
    color: #aaa;
    transition: color 0.3s ease;
}

.footer-widget ul li a:hover {
    color: #ffd700;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    text-align: center;
    color: #666;
}

.footer-bottom p {
    margin-bottom: 10px;
}

.footer-seo-text {
    font-size: 0.85rem;
    color: #555;
    max-width: 900px;
    margin: 20px auto 0;
    line-height: 1.6;
}

/* Page Content */
.page-content {
    padding: 120px 0 80px;
    background-color: #fff;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: #1a1a2e;
    text-transform: uppercase;
}

.page-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #ff6b35 0%, #ffd700 100%);
    margin: 20px auto 0;
    border-radius: 2px;
}

.content-section {
    max-width: 900px;
    margin: 0 auto;
}

.content-section h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 40px 0 20px;
    color: #1a1a2e;
}

.content-section h3 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 30px 0 15px;
    color: #333;
}

.content-section p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: #555;
}

.content-section ul {
    margin: 20px 0;
    padding-left: 30px;
}

/* Content Images */
.content-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 10px;
    margin: 0 auto 30px;
    display: block;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

/* Game Card Images */
.game-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 15px 15px 0 0;
}

.game-image {
    overflow: hidden;
    border-radius: 15px 15px 0 0;
}

.content-section ul li {
    list-style: disc;
    margin-bottom: 10px;
    color: #555;
    line-height: 1.7;
}

/* Form Styles */
.form-container {
    max-width: 500px;
    margin: 0 auto;
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-input {
    width: 100%;
    padding: 15px;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #ff6b35;
}

.form-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
}

.form-links {
    text-align: center;
    margin-top: 25px;
    padding-top: 25px;
    border-top: 1px solid #eee;
}

.form-links a {
    color: #ff6b35;
    font-weight: 500;
}

.form-links a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .main-navigation {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #1a1a2e;
        padding: 20px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        flex-direction: column;
        align-items: stretch;
    }
    
    .main-navigation.active {
        transform: translateX(0);
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-menu a {
        display: block;
        padding: 12px;
    }
    
    .header-buttons {
        margin: 20px 0 0 0;
        justify-content: center;
    }
    
    .hero-section {
        padding: 120px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .features-grid,
    .games-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .form-container {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
    }
    
    .header-buttons {
        flex-direction: column;
        gap: 10px;
    }
}