/* KingGame CSS Styles - Mobile First Design */

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

/* CSS Variables */
:root {
    --sa20-primary: #A0522D;
    --sa20-secondary: #00CED1;
    --sa20-accent: #6F4E37;
    --sa20-bg: #0D1117;
    --sa20-bg-light: #1a1f29;
    --sa20-text: #F5F5F5;
    --sa20-text-muted: #87CEFA;
    --sa20-border: #2d3748;
    --sa20-gradient: linear-gradient(135deg, #A0522D 0%, #6F4E37 100%);
    --sa20-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --sa20-transition: all 0.3s ease;
}

/* Base Typography */
html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 1.6rem;
    line-height: 1.5;
    color: var(--sa20-text);
    background-color: var(--sa20-bg);
    overflow-x: hidden;
}

/* Utility Classes */
.sa20-container {
    max-width: 430px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.sa20-wrapper {
    min-height: 100vh;
    padding-bottom: 8rem;
}

.sa20-text-center {
    text-align: center;
}

.sa20-text-primary {
    color: var(--sa20-primary);
}

.sa20-text-secondary {
    color: var(--sa20-secondary);
}

.sa20-text-muted {
    color: var(--sa20-text-muted);
}

.sa20-bg-primary {
    background-color: var(--sa20-primary);
}

.sa20-bg-secondary {
    background-color: var(--sa20-secondary);
}

.sa20-bg-accent {
    background-color: var(--sa20-accent);
}

/* Header and Navigation */
.sa20-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--sa20-bg);
    border-bottom: 1px solid var(--sa20-border);
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.sa20-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    height: 6rem;
}

.sa20-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 2rem;
    font-weight: 700;
    color: var(--sa20-text);
    text-decoration: none;
}

.sa20-logo img {
    width: 3.2rem;
    height: 3.2rem;
    border-radius: 0.8rem;
}

.sa20-nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.sa20-btn {
    padding: 0.8rem 1.6rem;
    border: none;
    border-radius: 0.8rem;
    font-size: 1.4rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--sa20-transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 4.4rem;
    min-width: 8rem;
}

.sa20-btn-primary {
    background: var(--sa20-gradient);
    color: var(--sa20-text);
    box-shadow: var(--sa20-shadow);
}

.sa20-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
}

.sa20-btn-outline {
    background: transparent;
    color: var(--sa20-secondary);
    border: 2px solid var(--sa20-secondary);
}

.sa20-btn-outline:hover {
    background: var(--sa20-secondary);
    color: var(--sa20-bg);
}

.sa20-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.8rem;
    border-radius: 0.8rem;
    transition: var(--sa20-transition);
}

.sa20-menu-toggle span {
    width: 2.4rem;
    height: 0.2rem;
    background: var(--sa20-text);
    transition: var(--sa20-transition);
}

.sa20-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(0.5rem, 0.5rem);
}

.sa20-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.sa20-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(0.5rem, -0.5rem);
}

/* Mobile Menu */
.sa20-mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--sa20-bg-light);
    z-index: 9999;
    transition: var(--sa20-transition);
    overflow-y: auto;
}

.sa20-mobile-menu.active {
    right: 0;
}

.sa20-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: var(--sa20-transition);
}

.sa20-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.sa20-menu-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--sa20-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sa20-menu-close {
    background: none;
    border: none;
    color: var(--sa20-text);
    font-size: 2.4rem;
    cursor: pointer;
    width: 4.4rem;
    height: 4.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.8rem;
    transition: var(--sa20-transition);
}

.sa20-menu-close:hover {
    background: var(--sa20-border);
}

.sa20-menu-nav {
    padding: 1.5rem;
}

.sa20-menu-nav ul {
    list-style: none;
}

.sa20-menu-nav li {
    margin-bottom: 0.5rem;
}

.sa20-menu-nav a {
    display: block;
    padding: 1.2rem 1.5rem;
    color: var(--sa20-text);
    text-decoration: none;
    border-radius: 0.8rem;
    transition: var(--sa20-transition);
    font-weight: 500;
}

.sa20-menu-nav a:hover {
    background: var(--sa20-border);
    color: var(--sa20-secondary);
}

/* Main Content */
.sa20-main {
    padding-top: 6rem;
    min-height: 100vh;
}

/* Carousel */
.sa20-carousel {
    position: relative;
    overflow: hidden;
    border-radius: 1.2rem;
    margin-bottom: 2rem;
}

.sa20-carousel-inner {
    display: flex;
    transition: transform 0.5s ease;
}

.sa20-carousel-item {
    min-width: 100%;
    position: relative;
    cursor: pointer;
}

.sa20-carousel-item img {
    width: 100%;
    height: auto;
    display: block;
}

.sa20-carousel-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 1rem;
    pointer-events: none;
}

.sa20-carousel-prev,
.sa20-carousel-next {
    background: rgba(0, 0, 0, 0.5);
    color: var(--sa20-text);
    border: none;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    pointer-events: all;
    transition: var(--sa20-transition);
}

.sa20-carousel-prev:hover,
.sa20-carousel-next:hover {
    background: rgba(0, 0, 0, 0.8);
}

.sa20-carousel-indicators {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
}

.sa20-carousel-indicator {
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--sa20-transition);
}

.sa20-carousel-indicator.active {
    background: var(--sa20-secondary);
    width: 2rem;
    border-radius: 0.4rem;
}

/* Game Grid */
.sa20-game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.sa20-game-card {
    background: var(--sa20-bg-light);
    border-radius: 0.8rem;
    overflow: hidden;
    transition: var(--sa20-transition);
    cursor: pointer;
    border: 1px solid transparent;
}

.sa20-game-card:hover {
    transform: translateY(-0.4rem);
    border-color: var(--sa20-secondary);
    box-shadow: 0 0.8rem 1.6rem rgba(0, 206, 209, 0.2);
}

.sa20-game-icon {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 1;
    object-fit: cover;
}

.sa20-game-name {
    padding: 0.8rem;
    font-size: 1.2rem;
    text-align: center;
    color: var(--sa20-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Sections */
.sa20-section {
    margin-bottom: 3rem;
}

.sa20-section-title {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--sa20-text);
    text-align: center;
}

.sa20-section-subtitle {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--sa20-secondary);
}

.sa20-card {
    background: var(--sa20-bg-light);
    border-radius: 1.2rem;
    padding: 2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--sa20-border);
    transition: var(--sa20-transition);
}

.sa20-card:hover {
    border-color: var(--sa20-secondary);
    box-shadow: 0 0.8rem 1.6rem rgba(0, 0, 0, 0.2);
}

/* Footer */
.sa20-footer {
    background: var(--sa20-bg-light);
    border-top: 1px solid var(--sa20-border);
    padding: 3rem 0 8rem;
    margin-top: 4rem;
}

.sa20-footer-content {
    margin-bottom: 2rem;
}

.sa20-footer-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--sa20-secondary);
}

.sa20-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.sa20-footer-links a {
    color: var(--sa20-text-muted);
    text-decoration: none;
    font-size: 1.4rem;
    transition: var(--sa20-transition);
}

.sa20-footer-links a:hover {
    color: var(--sa20-secondary);
}

.sa20-partners {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.sa20-partner {
    width: 4rem;
    height: 4rem;
    opacity: 0.7;
    transition: var(--sa20-transition);
}

.sa20-partner:hover {
    opacity: 1;
    transform: scale(1.1);
}

.sa20-copyright {
    text-align: center;
    color: var(--sa20-text-muted);
    font-size: 1.2rem;
    margin-top: 2rem;
}

/* Bottom Navigation */
.sa20-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--sa20-bg-light);
    border-top: 1px solid var(--sa20-border);
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 6.4rem;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.sa20-bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 6rem;
    min-height: 6rem;
    cursor: pointer;
    transition: var(--sa20-transition);
    color: var(--sa20-text-muted);
    text-decoration: none;
    border-radius: 0.8rem;
}

.sa20-bottom-nav-item:hover,
.sa20-bottom-nav-item.active {
    color: var(--sa20-secondary);
    background: rgba(0, 206, 209, 0.1);
}

.sa20-bottom-nav-icon {
    font-size: 2.4rem;
    margin-bottom: 0.4rem;
}

.sa20-bottom-nav-text {
    font-size: 1rem;
    font-weight: 500;
}

/* Scroll to Top Button */
.sa20-scroll-top {
    position: fixed;
    bottom: 8rem;
    right: 2rem;
    width: 4.8rem;
    height: 4.8rem;
    background: var(--sa20-gradient);
    color: var(--sa20-text);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--sa20-shadow);
    opacity: 0;
    visibility: hidden;
    transition: var(--sa20-transition);
    z-index: 999;
}

.sa20-scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.sa20-scroll-top:hover {
    transform: translateY(-0.4rem);
    box-shadow: 0 0.8rem 1.6rem rgba(0, 0, 0, 0.3);
}

/* Loader */
.sa20-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--sa20-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.3s ease;
}

.sa20-loader-spinner {
    width: 4rem;
    height: 4rem;
    border: 0.4rem solid var(--sa20-border);
    border-top: 0.4rem solid var(--sa20-secondary);
    border-radius: 50%;
    animation: sa20-spin 1s linear infinite;
}

@keyframes sa20-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sa20-game-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 0.8rem;
    }

    .sa20-game-name {
        font-size: 1rem;
        padding: 0.6rem;
    }

    .sa20-section-title {
        font-size: 2rem;
    }

    .sa20-card {
        padding: 1.5rem;
    }

    .sa20-bottom-nav {
        display: flex;
    }

    .sa20-main {
        padding-bottom: 8rem;
    }
}

@media (min-width: 769px) {
    .sa20-bottom-nav {
        display: none;
    }

    .sa20-main {
        padding-bottom: 0;
    }

    .sa20-container {
        max-width: 1200px;
    }

    .sa20-game-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
.sa20-btn:focus {
    outline: 2px solid var(--sa20-secondary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --sa20-bg: #000000;
        --sa20-text: #ffffff;
        --sa20-border: #ffffff;
    }
}