/*
Theme Name: VN88 Theme
Theme URI: https://vxn.uk.com/
Author: VN88 Team
Author URI: https://vxn.uk.com/
Description: Theme chuyen nghiep danh cho VN88 - Nha cai uy tin hang dau Viet Nam
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: vn88-theme
Domain Path: /languages
Tags: casino, betting, vn88, gambling, responsive
*/

/* ================================
   TABLE OF CONTENTS
   ================================
   1. CSS Variables
   2. Reset & Base
   3. Layout
   4. Header
   5. Navigation
   6. Footer
   7. Components
   8. Pages
   9. Responsive
   ================================ */

/* ================================
   1. CSS VARIABLES
   ================================ */
:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #e94560;
    --accent-hover: #c73e54;
    --gold-color: #ffd700;
    --text-color: #333333;
    --text-light: #666666;
    --text-white: #ffffff;
    --bg-light: #f5f5f5;
    --bg-dark: #0f0f1a;
    --border-color: #e0e0e0;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.3s ease;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 5px 25px rgba(0, 0, 0, 0.15);
    --radius: 8px;
    --radius-lg: 12px;
    --container-width: 1200px;
}

/* ================================
   2. RESET & BASE
   ================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
}

ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ================================
   3. LAYOUT
   ================================ */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.section-title p {
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ================================
   4. HEADER
   ================================ */
.site-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

.site-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-white);
    margin: 0;
}

.site-title span {
    color: var(--accent-color);
}

/* ================================
   5. NAVIGATION
   ================================ */
.main-navigation {
    display: flex;
    align-items: center;
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 5px;
}

.main-navigation li {
    position: relative;
}

.main-navigation a {
    display: block;
    padding: 10px 18px;
    color: var(--text-white);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--gold-color);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233, 69, 96, 0.4);
    color: var(--text-white);
}

.btn-secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: var(--text-white);
    color: var(--primary-color);
}

.btn-gold {
    background: linear-gradient(135deg, var(--gold-color) 0%, #ffb700 100%);
    color: var(--primary-color);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-white);
    transition: var(--transition);
}

/* ================================
   6. FOOTER
   ================================ */
.site-footer {
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-color) 100%);
    color: var(--text-white);
    padding: 60px 0 20px;
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-widget h3 {
    color: var(--gold-color);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer-widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

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

.footer-widget a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-widget a:hover {
    color: var(--gold-color);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

.footer-seo-text {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
    padding: 20px 0 0;
    line-height: 1.8;
}

/* ================================
   7. COMPONENTS
   ================================ */
.card {
    background: var(--text-white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--text-white);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.card p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--primary-color) 100%);
    color: var(--text-white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::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(255,255,255,0.03)" stroke-width="0.5"/></svg>');
    background-size: 100px 100px;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    color: var(--text-white);
    margin-bottom: 20px;
    font-weight: 800;
}

.hero h1 span {
    color: var(--gold-color);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

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

/* Features Section */
.features {
    background: var(--bg-light);
}

/* Steps Section */
.steps {
    background: var(--text-white);
}

.step-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: 8px;
}

.step-content p {
    margin-bottom: 0;
    color: var(--text-light);
}

/* FAQ Section */
.faq-item {
    background: var(--text-white);
    border-radius: var(--radius);
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: var(--primary-color);
}

.faq-answer {
    padding: 0 25px 20px;
    color: var(--text-light);
    display: none;
}

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

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    color: var(--text-white);
    text-align: center;
    padding: 80px 0;
}

.cta h2 {
    color: var(--text-white);
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.cta p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* ================================
   8. PAGES
   ================================ */
.page-content {
    padding: 60px 0;
    background: var(--bg-light);
    min-height: 500px;
}

.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-white);
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    color: var(--text-white);
    margin-bottom: 10px;
}

.page-header p {
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Login Page */
.login-form {
    max-width: 450px;
    margin: 0 auto;
    background: var(--text-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--primary-color);
}

.form-group input {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-submit {
    width: 100%;
    padding: 16px;
    font-size: 1rem;
}

/* Promotion Cards */
.promo-card {
    background: linear-gradient(135deg, var(--text-white) 0%, var(--bg-light) 100%);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.promo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--gold-color));
}

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

.promo-badge {
    display: inline-block;
    background: var(--accent-color);
    color: var(--text-white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.promo-amount {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-color);
    margin-bottom: 10px;
}

/* Contact Page */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    background: var(--text-white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-hover) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-item h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.contact-item p {
    margin-bottom: 0;
    color: var(--text-light);
}

/* ================================
   9. RESPONSIVE
   ================================ */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-widgets {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .main-navigation {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--primary-color);
        flex-direction: column;
        padding: 30px 20px;
        transition: var(--transition);
    }
    
    .main-navigation.active {
        left: 0;
    }
    
    .main-navigation ul {
        flex-direction: column;
        width: 100%;
    }
    
    .main-navigation li {
        width: 100%;
    }
    
    .main-navigation a {
        padding: 15px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .header-actions {
        display: none;
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .footer-widgets {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 40px 0;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 10px 18px;
        font-size: 0.85rem;
    }
    
    .login-form {
        padding: 25px;
    }
    
    .card {
        padding: 20px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.hidden { display: none; }
.visible { display: block; }