/**
 * kkkk ph login - Layout Stylesheet
 * All classes use s2da- prefix for namespace isolation
 * Mobile-first responsive design (max-width: 430px)
 * @version 1.0.0
 */

/* CSS Variables */
:root {
    --s2da-primary: #FFB74D;
    --s2da-secondary: #FF7F50;
    --s2da-bg: #2D2D2D;
    --s2da-bg-light: #3D3D3D;
    --s2da-text: #FFFFFF;
    --s2da-text-muted: #B0B0B0;
    --s2da-accent: #FFB74D;
    --s2da-gradient: linear-gradient(135deg, #FFB74D 0%, #FF7F50 100%);
    --s2da-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --s2da-radius: 12px;
    --s2da-radius-sm: 8px;
}

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

html {
    font-size: 62.5%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--s2da-bg);
    color: var(--s2da-text);
    line-height: 1.5;
    font-size: 1.6rem;
    max-width: 430px;
    margin: 0 auto;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Container */
.s2da-container {
    width: 100%;
    padding: 0 1.6rem;
    margin: 0 auto;
}

.s2da-wrapper {
    padding: 2rem 0;
}

/* Header */
.s2da-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    max-width: 430px;
    margin: 0 auto;
    background: var(--s2da-bg);
    padding: 1rem 1.6rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.s2da-header-scrolled {
    box-shadow: var(--s2da-shadow);
}

.s2da-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.s2da-logo img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}

.s2da-logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--s2da-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.s2da-header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.s2da-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.6rem;
    border-radius: var(--s2da-radius-sm);
    font-size: 1.4rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    min-height: 44px;
}

.s2da-btn-primary {
    background: var(--s2da-gradient);
    color: var(--s2da-bg);
}

.s2da-btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 16px rgba(255, 183, 77, 0.4);
}

.s2da-btn-outline {
    background: transparent;
    border: 2px solid var(--s2da-primary);
    color: var(--s2da-primary);
}

.s2da-btn-outline:hover {
    background: var(--s2da-primary);
    color: var(--s2da-bg);
}

/* Hamburger Menu */
.s2da-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.s2da-hamburger span {
    width: 24px;
    height: 2px;
    background: var(--s2da-text);
    transition: all 0.3s ease;
}

.s2da-hamburger-active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.s2da-hamburger-active span:nth-child(2) {
    opacity: 0;
}

.s2da-hamburger-active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.s2da-mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--s2da-bg-light);
    z-index: 9999;
    transition: right 0.3s ease;
    padding: 8rem 2rem 2rem;
    overflow-y: auto;
}

.s2da-menu-active {
    right: 0;
}

.s2da-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.s2da-overlay-active {
    opacity: 1;
    visibility: visible;
}

.s2da-menu-list {
    list-style: none;
}

.s2da-menu-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.s2da-menu-link {
    display: block;
    padding: 1.4rem 0;
    font-size: 1.6rem;
    color: var(--s2da-text);
    transition: color 0.3s ease;
}

.s2da-menu-link:hover {
    color: var(--s2da-primary);
}

/* Main Content */
main {
    padding-top: 6rem;
    padding-bottom: 8rem;
}

/* Carousel */
.s2da-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: var(--s2da-radius);
    margin-bottom: 2rem;
}

.s2da-slides {
    display: flex;
    transition: transform 0.5s ease;
}

.s2da-slide {
    min-width: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    cursor: pointer;
}

.s2da-slide-active {
    opacity: 1;
}

.s2da-slide img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: var(--s2da-radius);
}

.s2da-dots {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-top: 1rem;
}

.s2da-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--s2da-bg-light);
    cursor: pointer;
    transition: background 0.3s ease;
}

.s2da-dot-active {
    background: var(--s2da-primary);
}

/* Section Titles */
.s2da-section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: var(--s2da-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.s2da-section {
    margin-bottom: 3rem;
    padding: 0 1.6rem;
}

/* Game Grid */
.s2da-game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.s2da-game-item {
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.s2da-game-item:hover {
    transform: scale(1.05);
}

.s2da-game-icon {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--s2da-radius-sm);
    object-fit: cover;
    margin-bottom: 0.5rem;
}

.s2da-game-name {
    font-size: 1.1rem;
    color: var(--s2da-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Category Badge */
.s2da-category-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--s2da-gradient);
    color: var(--s2da-bg);
    border-radius: 20px;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Cards */
.s2da-card {
    background: var(--s2da-bg-light);
    border-radius: var(--s2da-radius);
    padding: 1.6rem;
    margin-bottom: 1.5rem;
}

.s2da-card-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--s2da-primary);
}

.s2da-card-text {
    font-size: 1.4rem;
    line-height: 1.6;
    color: var(--s2da-text-muted);
}

/* Footer */
.s2da-footer {
    background: var(--s2da-bg-light);
    padding: 3rem 1.6rem;
    margin-top: 2rem;
}

.s2da-footer-brand {
    text-align: center;
    margin-bottom: 2rem;
}

.s2da-footer-desc {
    font-size: 1.4rem;
    color: var(--s2da-text-muted);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.s2da-footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.s2da-footer-link {
    font-size: 1.3rem;
    color: var(--s2da-text-muted);
    transition: color 0.3s ease;
}

.s2da-footer-link:hover {
    color: var(--s2da-primary);
}

.s2da-copyright {
    text-align: center;
    font-size: 1.2rem;
    color: var(--s2da-text-muted);
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Bottom Navigation */
.s2da-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 430px;
    margin: 0 auto;
    background: linear-gradient(180deg, #3D3D3D 0%, #2D2D2D 100%);
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 64px;
    z-index: 1000;
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.3);
}

.s2da-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    min-height: 60px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 12px;
}

.s2da-nav-item:hover {
    background: rgba(255, 183, 77, 0.1);
}

.s2da-nav-item.active {
    background: rgba(255, 183, 77, 0.2);
}

.s2da-nav-item.active .s2da-nav-icon {
    color: var(--s2da-primary);
}

.s2da-nav-icon {
    font-size: 24px;
    color: var(--s2da-text-muted);
    margin-bottom: 0.3rem;
    transition: color 0.3s ease;
}

.s2da-nav-item:hover .s2da-nav-icon {
    color: var(--s2da-primary);
    transform: scale(1.1);
}

.s2da-nav-text {
    font-size: 10px;
    color: var(--s2da-text-muted);
    transition: color 0.3s ease;
}

.s2da-nav-item:hover .s2da-nav-text,
.s2da-nav-item.active .s2da-nav-text {
    color: var(--s2da-primary);
}

/* Partner Logos */
.s2da-partners {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 1rem 0;
}

.s2da-partner-logo {
    width: 60px;
    height: 30px;
    object-fit: contain;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.s2da-partner-logo:hover {
    opacity: 1;
}

/* Promo Links */
.s2da-promo-btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--s2da-gradient);
    color: var(--s2da-bg);
    border-radius: var(--s2da-radius);
    font-size: 1.4rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.s2da-promo-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 183, 77, 0.4);
}

.s2da-text-link {
    color: var(--s2da-primary);
    font-weight: 600;
    cursor: pointer;
    transition: color 0.3s ease;
}

.s2da-text-link:hover {
    color: var(--s2da-secondary);
    text-decoration: underline;
}

/* FAQ Section */
.s2da-faq-item {
    background: var(--s2da-bg-light);
    border-radius: var(--s2da-radius-sm);
    margin-bottom: 1rem;
    overflow: hidden;
}

.s2da-faq-question {
    padding: 1.2rem 1.6rem;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--s2da-text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.s2da-faq-answer {
    padding: 0 1.6rem 1.2rem;
    font-size: 1.3rem;
    color: var(--s2da-text-muted);
    line-height: 1.6;
}

/* Features Grid */
.s2da-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.s2da-feature-item {
    background: var(--s2da-bg-light);
    border-radius: var(--s2da-radius);
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease;
}

.s2da-feature-item:hover {
    transform: translateY(-4px);
}

.s2da-feature-icon {
    font-size: 3rem;
    margin-bottom: 0.8rem;
    color: var(--s2da-primary);
}

.s2da-feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.s2da-feature-desc {
    font-size: 1.2rem;
    color: var(--s2da-text-muted);
}

/* Testimonials */
.s2da-testimonial {
    background: var(--s2da-bg-light);
    border-radius: var(--s2da-radius);
    padding: 1.6rem;
    margin-bottom: 1rem;
}

.s2da-testimonial-text {
    font-size: 1.4rem;
    color: var(--s2da-text-muted);
    font-style: italic;
    margin-bottom: 1rem;
}

.s2da-testimonial-author {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--s2da-primary);
}

/* Payment Methods */
.s2da-payment-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.s2da-payment-item {
    background: var(--s2da-bg-light);
    border-radius: var(--s2da-radius-sm);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.s2da-payment-icon {
    font-size: 2rem;
    color: var(--s2da-primary);
}

.s2da-payment-name {
    font-size: 1.3rem;
    font-weight: 500;
}

/* Winners Section */
.s2da-winners-list {
    background: var(--s2da-bg-light);
    border-radius: var(--s2da-radius);
    padding: 1rem;
}

.s2da-winner-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.s2da-winner-item:last-child {
    border-bottom: none;
}

.s2da-winner-name {
    font-size: 1.3rem;
    color: var(--s2da-text);
}

.s2da-winner-amount {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--s2da-primary);
}

/* App Download */
.s2da-app-cta {
    background: linear-gradient(135deg, rgba(255, 183, 77, 0.2) 0%, rgba(255, 127, 80, 0.2) 100%);
    border-radius: var(--s2da-radius);
    padding: 2rem;
    text-align: center;
}

.s2da-app-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.s2da-app-desc {
    font-size: 1.4rem;
    color: var(--s2da-text-muted);
    margin-bottom: 1.5rem;
}

/* Responsive - Desktop */
@media (min-width: 769px) {
    .s2da-bottom-nav {
        display: none;
    }

    main {
        padding-bottom: 2rem;
    }

    .s2da-header {
        padding: 1rem 2rem;
    }

    .s2da-hamburger {
        display: none;
    }

    .s2da-desktop-nav {
        display: flex;
        gap: 2rem;
    }

    .s2da-desktop-nav a {
        color: var(--s2da-text-muted);
        font-size: 1.4rem;
        transition: color 0.3s ease;
    }

    .s2da-desktop-nav a:hover {
        color: var(--s2da-primary);
    }
}

@media (max-width: 768px) {
    .s2da-desktop-nav {
        display: none;
    }
}