/**
 * VIP Casino - Layout Stylesheet
 * @description Mobile-first responsive design for VIP Casino
 * @version 1.0.0
 * @author VIP Casino Team
 */

/* CSS Variables with prefix */
:root {
    --sa4d-primary: #FF5722;
    --sa4d-secondary: #E91E63;
    --sa4d-accent: #FF91A4;
    --sa4d-light: #FFDFBA;
    --sa4d-dark: #0D1117;
    --sa4d-bg: #0D1117;
    --sa4d-text: #FFDFBA;
    --sa4d-text-light: #ffffff;
    --sa4d-border: rgba(255, 145, 164, 0.3);
    --sa4d-shadow: 0 0.4rem 1.2rem rgba(0, 0, 0, 0.3);
    --sa4d-gradient: linear-gradient(135deg, #FF5722, #E91E63);
    --sa4d-radius: 0.8rem;
    --sa4d-radius-sm: 0.4rem;
    --sa4d-transition: all 0.3s ease;
}

/* Base styles */
html {
    font-size: 62.5%;
}

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

body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--sa4d-bg);
    color: var(--sa4d-text);
    line-height: 1.5;
    font-size: 1.4rem;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container styles */
.sa4d-container {
    width: 100%;
    max-width: 430px;
    margin: 0 auto;
    padding: 0 1.2rem;
}

.sa4d-wrapper {
    width: 100%;
    min-height: 100vh;
}

/* Header styles */
.sa4d-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, var(--sa4d-dark), rgba(13, 17, 23, 0.95));
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--sa4d-border);
    padding: 0.8rem 0;
}

.sa4d-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.2rem;
    max-width: 430px;
    margin: 0 auto;
}

.sa4d-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
}

.sa4d-logo img {
    width: 2.8rem;
    height: 2.8rem;
    border-radius: 0.4rem;
}

.sa4d-logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--sa4d-text-light);
    background: var(--sa4d-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sa4d-header-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.sa4d-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.6rem;
    min-width: 4.4rem;
    padding: 0.6rem 1.2rem;
    font-size: 1.3rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--sa4d-radius);
    cursor: pointer;
    transition: var(--sa4d-transition);
    touch-action: manipulation;
}

.sa4d-btn-login {
    background: transparent;
    color: var(--sa4d-text-light);
    border: 1px solid var(--sa4d-primary);
}

.sa4d-btn-login:hover {
    background: var(--sa4d-primary);
    color: var(--sa4d-text-light);
}

.sa4d-btn-register {
    background: var(--sa4d-gradient);
    color: var(--sa4d-text-light);
    box-shadow: 0 0.2rem 0.8rem rgba(255, 87, 34, 0.4);
}

.sa4d-btn-register:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.4rem 1.2rem rgba(255, 87, 34, 0.6);
}

.sa4d-menu-btn {
    background: transparent;
    border: none;
    color: var(--sa4d-text-light);
    font-size: 2rem;
    padding: 0.8rem;
    cursor: pointer;
    min-width: 4.4rem;
    min-height: 4.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile menu */
.sa4d-mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 280px;
    height: 100vh;
    background: var(--sa4d-dark);
    z-index: 9999;
    transition: right 0.3s ease;
    padding: 2rem;
    border-left: 1px solid var(--sa4d-border);
}

.sa4d-menu-active {
    right: 0;
}

.sa4d-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(--sa4d-transition);
}

.sa4d-overlay-active {
    opacity: 1;
    visibility: visible;
}

.sa4d-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--sa4d-border);
}

.sa4d-menu-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--sa4d-text-light);
}

.sa4d-menu-close {
    background: transparent;
    border: none;
    color: var(--sa4d-text-light);
    font-size: 2.4rem;
    cursor: pointer;
    padding: 0.4rem;
}

.sa4d-menu-list {
    list-style: none;
}

.sa4d-menu-item {
    margin-bottom: 0.8rem;
}

.sa4d-menu-link {
    display: block;
    padding: 1rem 0.8rem;
    color: var(--sa4d-text);
    text-decoration: none;
    font-size: 1.4rem;
    border-radius: var(--sa4d-radius-sm);
    transition: var(--sa4d-transition);
}

.sa4d-menu-link:hover {
    background: rgba(255, 87, 34, 0.1);
    color: var(--sa4d-primary);
}

/* Main content */
main {
    padding-top: 5.6rem;
}

@media (max-width: 768px) {
    main {
        padding-bottom: 7rem;
    }
}

/* Carousel styles */
.sa4d-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 0 0 1.2rem 1.2rem;
}

.sa4d-slides {
    position: relative;
    width: 100%;
    height: 18rem;
}

.sa4d-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    cursor: pointer;
}

.sa4d-slide-active {
    opacity: 1;
}

.sa4d-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sa4d-carousel-controls {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.6rem;
}

.sa4d-dot {
    width: 0.8rem;
    height: 0.8rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    transition: var(--sa4d-transition);
}

.sa4d-dot-active {
    background: var(--sa4d-primary);
    transform: scale(1.2);
}

/* Section styles */
.sa4d-section {
    padding: 2rem 0;
}

.sa4d-section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--sa4d-text-light);
    margin-bottom: 1.2rem;
    padding: 0 1.2rem;
    position: relative;
}

.sa4d-section-title::after {
    content: '';
    position: absolute;
    bottom: -0.4rem;
    left: 1.2rem;
    width: 3rem;
    height: 0.3rem;
    background: var(--sa4d-gradient);
    border-radius: 0.2rem;
}

/* Game grid styles */
.sa4d-game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.8rem;
    padding: 0 1.2rem;
}

.sa4d-game-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--sa4d-radius);
    padding: 0.6rem;
    cursor: pointer;
    transition: var(--sa4d-transition);
    border: 1px solid transparent;
}

.sa4d-game-card:hover {
    transform: translateY(-2px);
    border-color: var(--sa4d-primary);
    box-shadow: var(--sa4d-shadow);
}

.sa4d-game-img {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--sa4d-radius-sm);
    object-fit: cover;
    margin-bottom: 0.4rem;
}

.sa4d-game-name {
    font-size: 1rem;
    color: var(--sa4d-text);
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    width: 100%;
}

/* Content card styles */
.sa4d-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--sa4d-border);
    border-radius: var(--sa4d-radius);
    padding: 1.6rem;
    margin: 0 1.2rem 1.2rem;
}

.sa4d-card-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--sa4d-text-light);
    margin-bottom: 1rem;
}

.sa4d-card-text {
    font-size: 1.3rem;
    color: var(--sa4d-text);
    line-height: 1.6;
}

/* Promo link styles */
.sa4d-promo-link {
    color: var(--sa4d-primary);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--sa4d-transition);
}

.sa4d-promo-link:hover {
    color: var(--sa4d-secondary);
    text-decoration: underline;
}

.sa4d-promo-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--sa4d-gradient);
    color: var(--sa4d-text-light);
    padding: 1rem 2rem;
    font-size: 1.4rem;
    font-weight: 600;
    border: none;
    border-radius: var(--sa4d-radius);
    cursor: pointer;
    transition: var(--sa4d-transition);
    min-height: 4.4rem;
}

.sa4d-promo-btn:hover {
    transform: scale(1.02);
    box-shadow: 0 0.4rem 1.6rem rgba(255, 87, 34, 0.5);
}

/* Footer styles */
.sa4d-footer {
    background: linear-gradient(180deg, rgba(13, 17, 23, 0.95), var(--sa4d-dark));
    border-top: 1px solid var(--sa4d-border);
    padding: 2rem 0;
    margin-top: 2rem;
}

.sa4d-footer-brand {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 0 1.2rem;
}

.sa4d-footer-desc {
    font-size: 1.2rem;
    color: var(--sa4d-text);
    line-height: 1.6;
    max-width: 360px;
    margin: 0 auto;
}

.sa4d-footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    padding: 0 1.2rem;
    margin-bottom: 1.5rem;
}

.sa4d-footer-link {
    color: var(--sa4d-text);
    text-decoration: none;
    font-size: 1.2rem;
    padding: 0.4rem 0.8rem;
    border-radius: var(--sa4d-radius-sm);
    transition: var(--sa4d-transition);
}

.sa4d-footer-link:hover {
    background: rgba(255, 87, 34, 0.1);
    color: var(--sa4d-primary);
}

.sa4d-footer-promo {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.6rem;
    padding: 0 1.2rem;
    margin-bottom: 1.5rem;
}

.sa4d-footer-promo-btn {
    background: var(--sa4d-gradient);
    color: var(--sa4d-text-light);
    padding: 0.6rem 1.2rem;
    font-size: 1.2rem;
    font-weight: 600;
    border: none;
    border-radius: var(--sa4d-radius-sm);
    cursor: pointer;
    transition: var(--sa4d-transition);
}

.sa4d-footer-promo-btn:hover {
    transform: scale(1.05);
}

.sa4d-copyright {
    text-align: center;
    font-size: 1.1rem;
    color: rgba(255, 223, 186, 0.6);
    padding: 0 1.2rem;
}

/* Bottom navigation */
.sa4d-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(13, 17, 23, 0.98), var(--sa4d-dark));
    border-top: 1px solid var(--sa4d-border);
    padding: 0.4rem 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 6rem;
}

@media (min-width: 769px) {
    .sa4d-bottom-nav {
        display: none;
    }
}

.sa4d-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 6rem;
    min-height: 5rem;
    padding: 0.4rem;
    cursor: pointer;
    transition: var(--sa4d-transition);
    border-radius: var(--sa4d-radius-sm);
    text-decoration: none;
}

.sa4d-nav-item:hover {
    background: rgba(255, 87, 34, 0.1);
}

.sa4d-nav-item.active {
    color: var(--sa4d-primary);
}

.sa4d-nav-icon {
    font-size: 2.2rem;
    margin-bottom: 0.2rem;
    color: var(--sa4d-text-light);
    transition: var(--sa4d-transition);
}

.sa4d-nav-item:hover .sa4d-nav-icon,
.sa4d-nav-item.active .sa4d-nav-icon {
    color: var(--sa4d-primary);
    transform: scale(1.1);
}

.sa4d-nav-text {
    font-size: 1rem;
    color: var(--sa4d-text);
    transition: var(--sa4d-transition);
}

.sa4d-nav-item:hover .sa4d-nav-text,
.sa4d-nav-item.active .sa4d-nav-text {
    color: var(--sa4d-primary);
}

/* List styles */
.sa4d-list {
    list-style: none;
    padding: 0 1.2rem;
}

.sa4d-list-item {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--sa4d-border);
    font-size: 1.3rem;
    color: var(--sa4d-text);
}

.sa4d-list-item:last-child {
    border-bottom: none;
}

/* FAQ styles */
.sa4d-faq-item {
    margin-bottom: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--sa4d-radius);
    border: 1px solid var(--sa4d-border);
}

.sa4d-faq-question {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--sa4d-text-light);
    margin-bottom: 0.6rem;
}

.sa4d-faq-answer {
    font-size: 1.3rem;
    color: var(--sa4d-text);
    line-height: 1.6;
}

/* Feature list */
.sa4d-feature-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 0 1.2rem;
}

.sa4d-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--sa4d-radius);
    border: 1px solid var(--sa4d-border);
}

.sa4d-feature-icon {
    font-size: 2rem;
    color: var(--sa4d-primary);
    flex-shrink: 0;
}

.sa4d-feature-content h4 {
    font-size: 1.4rem;
    color: var(--sa4d-text-light);
    margin-bottom: 0.4rem;
}

.sa4d-feature-content p {
    font-size: 1.2rem;
    color: var(--sa4d-text);
}

/* Testimonial styles */
.sa4d-testimonial {
    padding: 1.2rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--sa4d-radius);
    border: 1px solid var(--sa4d-border);
    margin: 0 1.2rem 1rem;
}

.sa4d-testimonial-text {
    font-size: 1.3rem;
    color: var(--sa4d-text);
    line-height: 1.6;
    margin-bottom: 0.8rem;
    font-style: italic;
}

.sa4d-testimonial-author {
    font-size: 1.2rem;
    color: var(--sa4d-primary);
    font-weight: 600;
}

/* Payment methods */
.sa4d-payment-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    padding: 0 1.2rem;
    justify-content: center;
}

.sa4d-payment-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--sa4d-radius-sm);
    border: 1px solid var(--sa4d-border);
    font-size: 1.2rem;
    color: var(--sa4d-text);
}

/* Winner showcase */
.sa4d-winner-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--sa4d-radius-sm);
    margin: 0 1.2rem 0.6rem;
}

.sa4d-winner-name {
    font-size: 1.3rem;
    color: var(--sa4d-text);
}

.sa4d-winner-amount {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--sa4d-primary);
}

/* Utility classes */
.sa4d-text-center {
    text-align: center;
}

.sa4d-mt-1 {
    margin-top: 1rem;
}

.sa4d-mb-1 {
    margin-bottom: 1rem;
}

.sa4d-mt-2 {
    margin-top: 2rem;
}

.sa4d-mb-2 {
    margin-bottom: 2rem;
}

.sa4d-hidden {
    display: none;
}

/* Responsive adjustments */
@media (max-width: 380px) {
    .sa4d-game-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .sa4d-btn {
        padding: 0.6rem 0.8rem;
        font-size: 1.2rem;
    }
}

/* Desktop styles */
@media (min-width: 769px) {
    .sa4d-container {
        max-width: 800px;
    }

    .sa4d-header-inner {
        max-width: 800px;
    }

    .sa4d-game-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .sa4d-slides {
        height: 24rem;
    }
}