/**
 * Phwin Gaming Platform - Main Stylesheet
 * All classes use v1b9- prefix for namespace isolation
 * Mobile-first responsive design
 * @version 1.0.0
 */

/* ============================================
   CSS Variables - Design Tokens
   ============================================ */
:root {
    /* Primary color palette */
    --v1b9-primary: #48D1CC;
    --v1b9-primary-dark: #1B263B;
    --v1b9-accent: #FF8000;
    --v1b9-accent-light: #FFBF00;
    --v1b9-light: #AFEEEE;

    /* Background colors */
    --v1b9-bg-dark: #1B263B;
    --v1b9-bg-card: #243B55;
    --v1b9-bg-overlay: rgba(27, 38, 59, 0.95);

    /* Text colors */
    --v1b9-text-primary: #FFFFFF;
    --v1b9-text-secondary: #AFEEEE;
    --v1b9-text-muted: #8899AA;

    /* Spacing */
    --v1b9-spacing-xs: 0.4rem;
    --v1b9-spacing-sm: 0.8rem;
    --v1b9-spacing-md: 1.2rem;
    --v1b9-spacing-lg: 1.6rem;
    --v1b9-spacing-xl: 2.4rem;

    /* Border radius */
    --v1b9-radius-sm: 4px;
    --v1b9-radius-md: 8px;
    --v1b9-radius-lg: 12px;
    --v1b9-radius-full: 50%;

    /* Shadows */
    --v1b9-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --v1b9-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --v1b9-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);

    /* Transitions */
    --v1b9-transition-fast: 0.2s ease;
    --v1b9-transition-normal: 0.3s ease;

    /* Font sizes */
    --v1b9-font-xs: 1.0rem;
    --v1b9-font-sm: 1.2rem;
    --v1b9-font-md: 1.4rem;
    --v1b9-font-lg: 1.6rem;
    --v1b9-font-xl: 2.0rem;
    --v1b9-font-xxl: 2.4rem;

    /* Z-index layers */
    --v1b9-z-header: 1000;
    --v1b9-z-bottom-nav: 1000;
    --v1b9-z-overlay: 9998;
    --v1b9-z-menu: 9999;
}

/* Base reset with rem units (root font 62.5% = 10px) */
html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: var(--v1b9-font-md);
    line-height: 1.5;
    color: var(--v1b9-text-primary);
    background-color: var(--v1b9-bg-dark);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Layout Components
   ============================================ */
.v1b9-container {
    width: 100%;
    max-width: 430px;
    margin: 0 auto;
    padding: 0 var(--v1b9-spacing-sm);
}

.v1b9-wrapper {
    padding: var(--v1b9-spacing-md);
}

.v1b9-grid {
    display: grid;
    gap: var(--v1b9-spacing-sm);
}

.v1b9-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.v1b9-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.v1b9-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ============================================
   Header Navigation
   ============================================ */
.v1b9-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--v1b9-z-header);
    background: linear-gradient(135deg, var(--v1b9-bg-dark) 0%, var(--v1b9-bg-card) 100%);
    padding: var(--v1b9-spacing-sm) var(--v1b9-spacing-md);
    box-shadow: var(--v1b9-shadow-md);
}

.v1b9-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 430px;
    margin: 0 auto;
}

.v1b9-logo {
    display: flex;
    align-items: center;
    gap: var(--v1b9-spacing-xs);
    text-decoration: none;
}

.v1b9-logo img {
    width: 28px;
    height: 28px;
    border-radius: var(--v1b9-radius-sm);
}

.v1b9-logo-text {
    font-size: var(--v1b9-font-lg);
    font-weight: 700;
    color: var(--v1b9-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.v1b9-header-actions {
    display: flex;
    align-items: center;
    gap: var(--v1b9-spacing-sm);
}

.v1b9-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--v1b9-spacing-xs) var(--v1b9-spacing-md);
    font-size: var(--v1b9-font-sm);
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--v1b9-radius-md);
    cursor: pointer;
    transition: all var(--v1b9-transition-fast);
    min-height: 36px;
    min-width: 70px;
}

.v1b9-btn-primary {
    background: linear-gradient(135deg, var(--v1b9-accent) 0%, var(--v1b9-accent-light) 100%);
    color: var(--v1b9-bg-dark);
}

.v1b9-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--v1b9-shadow-md);
}

.v1b9-btn-secondary {
    background: transparent;
    border: 2px solid var(--v1b9-primary);
    color: var(--v1b9-primary);
}

.v1b9-btn-secondary:hover {
    background: var(--v1b9-primary);
    color: var(--v1b9-bg-dark);
}

/* Hamburger Menu */
.v1b9-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 24px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.v1b9-hamburger span {
    width: 100%;
    height: 3px;
    background: var(--v1b9-primary);
    border-radius: 2px;
    transition: all var(--v1b9-transition-fast);
}

.v1b9-hamburger-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.v1b9-hamburger-active span:nth-child(2) {
    opacity: 0;
}

.v1b9-hamburger-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Mobile Menu
   ============================================ */
.v1b9-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: var(--v1b9-z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: all var(--v1b9-transition-normal);
}

.v1b9-overlay-active {
    opacity: 1;
    visibility: visible;
}

.v1b9-mobile-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: var(--v1b9-bg-overlay);
    z-index: var(--v1b9-z-menu);
    padding: var(--v1b9-spacing-xl) var(--v1b9-spacing-md);
    transition: right var(--v1b9-transition-normal);
    overflow-y: auto;
}

.v1b9-menu-active {
    right: 0;
}

.v1b9-nav-list {
    list-style: none;
}

.v1b9-nav-item {
    margin-bottom: var(--v1b9-spacing-sm);
}

.v1b9-nav-link {
    display: block;
    padding: var(--v1b9-spacing-sm) var(--v1b9-spacing-md);
    color: var(--v1b9-text-primary);
    text-decoration: none;
    font-size: var(--v1b9-font-md);
    border-radius: var(--v1b9-radius-md);
    transition: all var(--v1b9-transition-fast);
}

.v1b9-nav-link:hover {
    background: var(--v1b9-primary);
    color: var(--v1b9-bg-dark);
}

/* ============================================
   Main Content Area
   ============================================ */
.v1b9-main {
    padding-top: 70px;
    padding-bottom: var(--v1b9-spacing-xl);
}

@media (max-width: 768px) {
    .v1b9-main {
        padding-bottom: 80px;
    }
}

.v1b9-section {
    padding: var(--v1b9-spacing-lg) 0;
}

.v1b9-section-title {
    font-size: var(--v1b9-font-xl);
    font-weight: 700;
    color: var(--v1b9-primary);
    margin-bottom: var(--v1b9-spacing-md);
    text-align: center;
}

/* ============================================
   Carousel/Slider
   ============================================ */
.v1b9-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--v1b9-radius-lg);
    margin-bottom: var(--v1b9-spacing-lg);
}

.v1b9-slides {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
}

.v1b9-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--v1b9-transition-normal);
    cursor: pointer;
}

.v1b9-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--v1b9-radius-lg);
}

.v1b9-dots {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: var(--v1b9-spacing-xs);
}

.v1b9-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--v1b9-radius-full);
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all var(--v1b9-transition-fast);
}

.v1b9-dot-active {
    background: var(--v1b9-accent);
    transform: scale(1.2);
}

/* ============================================
   Game Grid Components
   ============================================ */
.v1b9-game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--v1b9-spacing-sm);
}

.v1b9-game-card {
    background: var(--v1b9-bg-card);
    border-radius: var(--v1b9-radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--v1b9-transition-fast);
}

.v1b9-game-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--v1b9-shadow-md);
}

.v1b9-game-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.v1b9-game-name {
    padding: var(--v1b9-spacing-xs);
    font-size: var(--v1b9-font-xs);
    color: var(--v1b9-text-primary);
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================
   Content Cards
   ============================================ */
.v1b9-card {
    background: var(--v1b9-bg-card);
    border-radius: var(--v1b9-radius-lg);
    padding: var(--v1b9-spacing-md);
    margin-bottom: var(--v1b9-spacing-md);
    box-shadow: var(--v1b9-shadow-sm);
}

.v1b9-card-title {
    font-size: var(--v1b9-font-lg);
    font-weight: 600;
    color: var(--v1b9-accent);
    margin-bottom: var(--v1b9-spacing-sm);
}

.v1b9-card-text {
    font-size: var(--v1b9-font-sm);
    color: var(--v1b9-text-secondary);
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */
.v1b9-footer {
    background: linear-gradient(180deg, var(--v1b9-bg-card) 0%, var(--v1b9-bg-dark) 100%);
    padding: var(--v1b9-spacing-xl) var(--v1b9-spacing-md);
    margin-top: var(--v1b9-spacing-xl);
}

.v1b9-footer-brand {
    text-align: center;
    margin-bottom: var(--v1b9-spacing-lg);
}

.v1b9-footer-desc {
    font-size: var(--v1b9-font-sm);
    color: var(--v1b9-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--v1b9-spacing-md);
}

.v1b9-footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--v1b9-spacing-sm);
    margin-bottom: var(--v1b9-spacing-lg);
}

.v1b9-footer-link {
    color: var(--v1b9-text-secondary);
    text-decoration: none;
    font-size: var(--v1b9-font-sm);
    transition: color var(--v1b9-transition-fast);
}

.v1b9-footer-link:hover {
    color: var(--v1b9-primary);
}

.v1b9-footer-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--v1b9-spacing-sm);
    margin-bottom: var(--v1b9-spacing-lg);
}

.v1b9-copyright {
    text-align: center;
    font-size: var(--v1b9-font-xs);
    color: var(--v1b9-text-muted);
    padding-top: var(--v1b9-spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   Mobile Bottom Navigation
   ============================================ */
.v1b9-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: var(--v1b9-z-bottom-nav);
    background: linear-gradient(180deg, var(--v1b9-bg-card) 0%, var(--v1b9-bg-dark) 100%);
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 64px;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.3);
}

@media (min-width: 769px) {
    .v1b9-bottom-nav {
        display: none;
    }
}

.v1b9-nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    min-height: 60px;
    background: transparent;
    border: none;
    color: var(--v1b9-text-secondary);
    cursor: pointer;
    transition: all var(--v1b9-transition-fast);
    text-decoration: none;
}

.v1b9-nav-btn:hover,
.v1b9-nav-btn-active {
    color: var(--v1b9-accent);
    transform: scale(1.1);
}

.v1b9-nav-btn i,
.v1b9-nav-btn .material-icons {
    font-size: 24px;
    margin-bottom: 2px;
}

.v1b9-nav-btn span {
    font-size: 10px;
    font-weight: 500;
}

/* ============================================
   Utility Classes
   ============================================ */
.v1b9-text-center { text-align: center; }
.v1b9-text-left { text-align: left; }
.v1b9-text-right { text-align: right; }

.v1b9-mb-sm { margin-bottom: var(--v1b9-spacing-sm); }
.v1b9-mb-md { margin-bottom: var(--v1b9-spacing-md); }
.v1b9-mb-lg { margin-bottom: var(--v1b9-spacing-lg); }

.v1b9-mt-sm { margin-top: var(--v1b9-spacing-sm); }
.v1b9-mt-md { margin-top: var(--v1b9-spacing-md); }
.v1b9-mt-lg { margin-top: var(--v1b9-spacing-lg); }

.v1b9-hidden { display: none; }
.v1b9-visible { display: block; }

.v1b9-flex { display: flex; }
.v1b9-flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   Promo Link Styles
   ============================================ */
.v1b9-promo-text {
    color: var(--v1b9-accent);
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
    transition: color var(--v1b9-transition-fast);
}

.v1b9-promo-text:hover {
    color: var(--v1b9-accent-light);
}

.v1b9-promo-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--v1b9-accent) 0%, #FF6600 100%);
    color: var(--v1b9-text-primary);
    padding: var(--v1b9-spacing-sm) var(--v1b9-spacing-lg);
    border-radius: var(--v1b9-radius-lg);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--v1b9-transition-fast);
    box-shadow: var(--v1b9-shadow-sm);
}

.v1b9-promo-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--v1b9-shadow-md);
}

/* ============================================
   Category Badge
   ============================================ */
.v1b9-category-badge {
    display: inline-block;
    background: var(--v1b9-primary);
    color: var(--v1b9-bg-dark);
    padding: var(--v1b9-spacing-xs) var(--v1b9-spacing-sm);
    border-radius: var(--v1b9-radius-md);
    font-size: var(--v1b9-font-xs);
    font-weight: 600;
    text-transform: uppercase;
}

/* ============================================
   Animation Classes
   ============================================ */
@keyframes v1b9-fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.v1b9-animate-fadeIn {
    animation: v1b9-fadeIn 0.5s ease forwards;
}

@keyframes v1b9-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.v1b9-animate-pulse {
    animation: v1b9-pulse 2s infinite;
}