/**
 * Bingoplus - Theme Stylesheet
 * Version: 1.0.0
 * Prefix: sf53
 * Color Palette: #9966CC (Purple) | #34495E (Dark Blue) | #DDA0DD (Light Pink) | #20B2AA (Teal) | #32CD32 (Green)
 */

/* ========================================
   CSS Variables & Reset
======================================== */
:root {
    --sf53-primary: #9966CC;
    --sf53-secondary: #34495E;
    --sf53-accent: #DDA0DD;
    --sf53-highlight: #20B2AA;
    --sf53-success: #32CD32;
    --sf53-dark: #1a1a2e;
    --sf53-darker: #0f0f1a;
    --sf53-light: #ffffff;
    --sf53-gray: #8b8b9a;
    --sf53-gradient: linear-gradient(135deg, #9966CC 0%, #34495E 100%);
    --sf53-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --sf53-radius: 12px;
    --sf53-transition: all 0.3s ease;
}

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

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--sf53-darker);
    color: var(--sf53-light);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--sf53-transition);
}

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

ul, ol {
    list-style: none;
}

/* ========================================
   Header Styles
======================================== */
.sf53-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 16px;
    transition: var(--sf53-transition);
}

.sf53-header.sf53-scrolled {
    background: rgba(15, 15, 26, 0.98);
    box-shadow: var(--sf53-shadow);
}

.sf53-header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.sf53-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sf53-logo img {
    height: 40px;
    width: auto;
}

.sf53-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--sf53-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sf53-header-buttons {
    display: flex;
    gap: 10px;
}

.sf53-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--sf53-radius);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    transition: var(--sf53-transition);
}

.sf53-btn-primary {
    background: var(--sf53-gradient);
    color: var(--sf53-light);
}

.sf53-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(153, 102, 204, 0.4);
}

.sf53-btn-secondary {
    background: transparent;
    color: var(--sf53-light);
    border: 2px solid var(--sf53-primary);
}

.sf53-btn-secondary:hover {
    background: var(--sf53-primary);
}

.sf53-menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--sf53-light);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* Desktop Navigation */
.sf53-desktop-nav {
    display: none;
}

@media (min-width: 769px) {
    .sf53-menu-toggle {
        display: none;
    }

    .sf53-desktop-nav {
        display: flex;
        gap: 24px;
    }

    .sf53-desktop-nav a {
        color: var(--sf53-gray);
        font-weight: 500;
        padding: 8px 0;
        position: relative;
    }

    .sf53-desktop-nav a:hover {
        color: var(--sf53-light);
    }

    .sf53-desktop-nav a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--sf53-primary);
        transition: var(--sf53-transition);
    }

    .sf53-desktop-nav a:hover::after {
        width: 100%;
    }
}

/* Mobile Menu */
.sf53-mobile-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 280px;
    height: 100vh;
    background: var(--sf53-dark);
    z-index: 9999;
    padding: 80px 24px 24px;
    transition: right 0.3s ease;
    overflow-y: auto;
}

.sf53-mobile-menu.sf53-active {
    right: 0;
}

.sf53-mobile-menu-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: var(--sf53-light);
    font-size: 1.5rem;
    cursor: pointer;
}

.sf53-mobile-menu-nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.sf53-mobile-menu-nav a {
    display: block;
    padding: 12px 16px;
    color: var(--sf53-gray);
    border-radius: 8px;
    transition: var(--sf53-transition);
}

.sf53-mobile-menu-nav a:hover {
    background: rgba(153, 102, 204, 0.1);
    color: var(--sf53-light);
}

.sf53-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: var(--sf53-transition);
}

.sf53-menu-overlay.sf53-active {
    opacity: 1;
    visibility: visible;
}

body.sf53-menu-open {
    overflow: hidden;
}

/* ========================================
   Mobile Bottom Navigation
======================================== */
.sf53-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(26, 26, 46, 0.98) 0%, rgba(15, 15, 26, 1) 100%);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(153, 102, 204, 0.2);
    padding: 8px 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 64px;
}

.sf53-bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    min-height: 56px;
    cursor: pointer;
    transition: var(--sf53-transition);
    color: var(--sf53-gray);
    background: transparent;
    border: none;
    padding: 4px;
}

.sf53-bottom-nav-item:hover,
.sf53-bottom-nav-item.sf53-active {
    color: var(--sf53-primary);
    transform: scale(1.1);
}

.sf53-bottom-nav-item i,
.sf53-bottom-nav-item .material-icons {
    font-size: 24px;
    margin-bottom: 4px;
}

.sf53-bottom-nav-item ion-icon {
    font-size: 26px;
    margin-bottom: 4px;
}

.sf53-bottom-nav-item span {
    font-size: 10px;
    font-weight: 500;
}

@media (min-width: 769px) {
    .sf53-bottom-nav {
        display: none;
    }
}

/* ========================================
   Hero & Carousel Section
======================================== */
.sf53-hero {
    position: relative;
    margin-top: 64px;
    overflow: hidden;
}

.sf53-carousel {
    position: relative;
    height: 300px;
}

.sf53-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.sf53-slide.sf53-active {
    opacity: 1;
}

.sf53-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sf53-carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
}

.sf53-carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--sf53-transition);
}

.sf53-carousel-dot.sf53-active {
    background: var(--sf53-primary);
    transform: scale(1.2);
}

.sf53-hero-content {
    position: absolute;
    bottom: 40px;
    left: 16px;
    right: 16px;
    text-align: center;
}

.sf53-hero-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.sf53-hero-subtitle {
    font-size: 1rem;
    color: var(--sf53-accent);
    margin-bottom: 16px;
}

/* ========================================
   Main Content
======================================== */
main {
    padding: 20px 16px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.sf53-section {
    margin-bottom: 32px;
}

.sf53-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sf53-section-title i {
    color: var(--sf53-primary);
}

.sf53-section-title::before {
    content: '';
    width: 4px;
    height: 24px;
    background: var(--sf53-gradient);
    border-radius: 2px;
}

/* ========================================
   Game Categories Tabs
======================================== */
.sf53-tabs {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 12px;
    margin-bottom: 20px;
    scrollbar-width: none;
}

.sf53-tabs::-webkit-scrollbar {
    display: none;
}

.sf53-tab-btn {
    flex-shrink: 0;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(153, 102, 204, 0.2);
    border-radius: 20px;
    color: var(--sf53-gray);
    font-weight: 500;
    cursor: pointer;
    transition: var(--sf53-transition);
    white-space: nowrap;
}

.sf53-tab-btn.sf53-active,
.sf53-tab-btn:hover {
    background: var(--sf53-gradient);
    color: var(--sf53-light);
    border-color: transparent;
}

.sf53-tab-content {
    display: none;
}

.sf53-tab-content.sf53-active {
    display: block;
}

/* ========================================
   Game Grid
======================================== */
.sf53-game-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

@media (min-width: 576px) {
    .sf53-game-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 769px) {
    .sf53-game-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 16px;
    }
}

@media (min-width: 1024px) {
    .sf53-game-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.sf53-game-card {
    position: relative;
    border-radius: var(--sf53-radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--sf53-transition);
    background: rgba(255, 255, 255, 0.05);
}

.sf53-game-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(153, 102, 204, 0.3);
}

.sf53-game-card img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.sf53-game-card-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
}

.sf53-game-card-name {
    font-size: 0.75rem;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sf53-game-card-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 50px;
    height: 50px;
    background: var(--sf53-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--sf53-transition);
}

.sf53-game-card:hover .sf53-game-card-play {
    transform: translate(-50%, -50%) scale(1);
}

.sf53-game-card-play i {
    color: var(--sf53-light);
    font-size: 1.2rem;
}

/* ========================================
   Partners Section
======================================== */
.sf53-partners {
    padding: 24px 0;
    border-top: 1px solid rgba(153, 102, 204, 0.1);
    border-bottom: 1px solid rgba(153, 102, 204, 0.1);
}

.sf53-partners-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    align-items: center;
}

@media (min-width: 576px) {
    .sf53-partners-grid {
        grid-template-columns: repeat(10, 1fr);
    }
}

.sf53-partner-logo {
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--sf53-transition);
}

.sf53-partner-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
}

/* ========================================
   Features Grid
======================================== */
.sf53-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 769px) {
    .sf53-features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.sf53-feature-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(153, 102, 204, 0.15);
    border-radius: var(--sf53-radius);
    padding: 20px;
    text-align: center;
    transition: var(--sf53-transition);
}

.sf53-feature-card:hover {
    background: rgba(153, 102, 204, 0.1);
    border-color: var(--sf53-primary);
    transform: translateY(-4px);
}

.sf53-feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    background: var(--sf53-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sf53-feature-icon i,
.sf53-feature-icon .material-icons {
    font-size: 28px;
    color: var(--sf53-light);
}

.sf53-feature-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.sf53-feature-desc {
    font-size: 0.85rem;
    color: var(--sf53-gray);
}

/* ========================================
   Accordion (FAQ)
======================================== */
.sf53-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sf53-accordion-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(153, 102, 204, 0.15);
    border-radius: var(--sf53-radius);
    overflow: hidden;
}

.sf53-accordion-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    cursor: pointer;
    transition: var(--sf53-transition);
}

.sf53-accordion-header:hover {
    background: rgba(153, 102, 204, 0.1);
}

.sf53-accordion-title {
    font-weight: 600;
    font-size: 1rem;
}

.sf53-accordion-icon {
    font-size: 1.2rem;
    color: var(--sf53-primary);
    transition: var(--sf53-transition);
}

.sf53-accordion-item.sf53-active .sf53-accordion-icon {
    transform: rotate(180deg);
}

.sf53-accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.sf53-accordion-item.sf53-active .sf53-accordion-content {
    max-height: 500px;
}

.sf53-accordion-body {
    padding: 0 20px 20px;
    color: var(--sf53-gray);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ========================================
   Footer
======================================== */
.sf53-footer {
    background: var(--sf53-dark);
    padding: 40px 16px 20px;
    margin-top: 40px;
    border-top: 1px solid rgba(153, 102, 204, 0.1);
}

.sf53-footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 576px) {
    .sf53-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 769px) {
    .sf53-footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.sf53-footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--sf53-light);
}

.sf53-footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sf53-footer-links a {
    color: var(--sf53-gray);
    font-size: 0.9rem;
    transition: var(--sf53-transition);
}

.sf53-footer-links a:hover {
    color: var(--sf53-primary);
}

.sf53-footer-bottom {
    margin-top: 32px;
    padding-top: 20px;
    border-top: 1px solid rgba(153, 102, 204, 0.1);
    text-align: center;
    color: var(--sf53-gray);
    font-size: 0.85rem;
}

/* ========================================
   Back to Top Button
======================================== */
#backToTop {
    position: fixed;
    bottom: 80px;
    right: 16px;
    width: 48px;
    height: 48px;
    background: var(--sf53-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--sf53-transition);
    z-index: 999;
    border: none;
    box-shadow: var(--sf53-shadow);
}

#backToTop.sf53-visible {
    opacity: 1;
    visibility: visible;
}

#backToTop:hover {
    transform: translateY(-4px);
}

#backToTop i {
    color: var(--sf53-light);
    font-size: 1.2rem;
}

@media (min-width: 769px) {
    #backToTop {
        bottom: 24px;
    }
}

/* ========================================
   Utility Classes
======================================== */
.sf53-text-gradient {
    background: var(--sf53-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sf53-highlight {
    color: var(--sf53-primary);
}

.sf53-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

.sf53-hidden {
    display: none !important;
}

/* Responsive visibility */
@media (max-width: 768px) {
    .sf53-hide-mobile {
        display: none !important;
    }
}

@media (min-width: 769px) {
    .sf53-hide-desktop {
        display: none !important;
    }
}

/* ========================================
   Content Typography
======================================== */
.sf53-content {
    line-height: 1.8;
}

.sf53-content h2 {
    font-size: 1.5rem;
    margin: 24px 0 16px;
    color: var(--sf53-light);
}

.sf53-content h3 {
    font-size: 1.25rem;
    margin: 20px 0 12px;
    color: var(--sf53-accent);
}

.sf53-content p {
    margin-bottom: 16px;
    color: var(--sf53-gray);
}

.sf53-content ul,
.sf53-content ol {
    margin: 16px 0;
    padding-left: 24px;
}

.sf53-content li {
    margin-bottom: 8px;
    color: var(--sf53-gray);
}

.sf53-content a {
    color: var(--sf53-primary);
}

.sf53-content a:hover {
    text-decoration: underline;
}

/* Internal links styling */
.sf53-internal-link {
    color: var(--sf53-highlight);
    font-weight: 500;
    border-bottom: 1px dashed var(--sf53-primary);
}

.sf53-internal-link:hover {
    border-bottom-style: solid;
}