/*
Theme Name: K8 Theme
Theme URI: https://k8viet.com
Author: K8 Team
Author URI: https://k8viet.com
Description: Theme chuyen nghiep cho nha cai K8 - Thiet ke hien dai, toi uu SEO
Version: 1.0.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: k8theme
Domain Path: /languages
Tags: casino, betting, responsive, seo-friendly, vietnamese
*/

/* 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 */
.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: sticky;
    top: 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 {
    font-size: 1.8rem;
    font-weight: bold;
    color: #ffd700;
}

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

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

.nav-menu a {
    color: #fff;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
    text-transform: capitalize;
}

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

.auth-buttons {
    display: flex;
    gap: 10px;
    margin-left: 30px;
}

.btn {
    padding: 10px 25px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #1a1a2e;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
}

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

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 50%, #16213e 100%);
    color: #fff;
    padding: 100px 0;
    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;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #ffd700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    color: #e0e0e0;
}

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

.hero-cta .btn {
    padding: 15px 40px;
    font-size: 1.1rem;
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #1a1a2e;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: -30px auto 50px;
}

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

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

.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, #ffd700 0%, #ffed4e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
}

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

.feature-desc {
    color: #666;
    line-height: 1.8;
}

/* Games Section */
.games-section {
    background: #1a1a2e;
    color: #fff;
}

.games-section .section-title {
    color: #fff;
}

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

.game-card {
    background: linear-gradient(135deg, #16213e 0%, #0f3460 100%);
    border-radius: 15px;
    padding: 30px;
    border: 1px solid rgba(255,215,0,0.2);
    transition: all 0.3s ease;
}

.game-card:hover {
    border-color: #ffd700;
    transform: scale(1.02);
}

.game-title {
    font-size: 1.5rem;
    color: #ffd700;
    margin-bottom: 15px;
}

.game-list {
    margin-top: 20px;
}

.game-list li {
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    gap: 10px;
}

.game-list li::before {
    content: '✓';
    color: #ffd700;
    font-weight: bold;
}

/* Steps Section */
.steps-container {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    flex-wrap: wrap;
}

.step-item {
    flex: 1;
    min-width: 250px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #1a1a2e;
    margin: 0 auto 20px;
}

.step-title {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #1a1a2e;
}

.step-desc {
    color: #666;
}

/* FAQ Section */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border-radius: 10px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.faq-question {
    padding: 20px 25px;
    background: #f8f9fa;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: #1a1a2e;
    transition: all 0.3s ease;
}

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

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

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

.faq-item.active .faq-question {
    background: #ffd700;
    color: #1a1a2e;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    padding: 80px 0;
    text-align: center;
}

.cta-title {
    font-size: 2.5rem;
    color: #1a1a2e;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 30px;
}

.cta-section .btn-primary {
    background: #1a1a2e;
    color: #ffd700;
}

.cta-section .btn-primary:hover {
    background: #0f3460;
}

/* Footer */
.site-footer {
    background: #0f0f1e;
    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-title {
    font-size: 1.2rem;
    color: #ffd700;
    margin-bottom: 20px;
}

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

.footer-links a {
    color: #aaa;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #ffd700;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: #888;
}

.footer-seo-text {
    margin-top: 20px;
    font-size: 0.9rem;
    line-height: 1.8;
    color: #666;
}

/* Page Content */
.page-content {
    background: #fff;
    padding: 60px 0;
    min-height: 500px;
}

.page-title {
    font-size: 2.5rem;
    color: #1a1a2e;
    margin-bottom: 30px;
    text-align: center;
}

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

.content-wrapper h2 {
    font-size: 1.8rem;
    color: #1a1a2e;
    margin: 40px 0 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #ffd700;
}

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

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

.content-wrapper ul,
.content-wrapper ol {
    margin-bottom: 20px;
    padding-left: 30px;
}

.content-wrapper ul li {
    list-style: disc;
    margin-bottom: 10px;
    color: #555;
}

.content-wrapper ol li {
    list-style: decimal;
    margin-bottom: 10px;
    color: #555;
}

/* Login Page */
.login-container {
    max-width: 500px;
    margin: 0 auto;
    background: #fff;
    padding: 50px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.login-title {
    text-align: center;
    font-size: 2rem;
    color: #1a1a2e;
    margin-bottom: 30px;
}

.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 #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #ffd700;
}

.form-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a2e;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.4);
}

/* Promotion Cards */
.promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.promo-card {
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.promo-card:hover {
    border-color: #ffd700;
    transform: translateY(-5px);
}

.promo-header {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: #fff;
    padding: 30px;
    text-align: center;
}

.promo-title {
    font-size: 1.5rem;
    color: #ffd700;
    margin-bottom: 10px;
}

.promo-bonus {
    font-size: 2.5rem;
    font-weight: bold;
}

.promo-body {
    padding: 30px;
}

.promo-list li {
    padding: 10px 0;
    border-bottom: 1px solid #eee;
    display: flex;
    align-items: center;
    gap: 10px;
}

.promo-list li::before {
    content: '✓';
    color: #28a745;
    font-weight: bold;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.contact-info {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-label {
    font-weight: 600;
    color: #1a1a2e;
    margin-bottom: 5px;
}

.contact-value {
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .main-navigation {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: #1a1a2e;
        flex-direction: column;
        padding: 30px;
        transition: left 0.3s ease;
    }
    
    .main-navigation.active {
        left: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }
    
    .nav-menu a {
        display: block;
        text-align: center;
    }
    
    .auth-buttons {
        margin-left: 0;
        margin-top: 20px;
        flex-direction: column;
        width: 100%;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .login-container {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    .section {
        padding: 50px 0;
    }
}