/**
 * km8.css - Main Stylesheet for km8.club
 * Mobile-first responsive design with 'gd4f-' prefix
 * Color palette: #7FFF00 | #F0F8FF | #8B0000 | #0A0A0A | #00CED1
 */

/* CSS Variables */
:root {
    --gd4f-primary: #7FFF00;
    --gd4f-secondary: #00CED1;
    --gd4f-accent: #8B0000;
    --gd4f-bg-dark: #0A0A0A;
    --gd4f-bg-light: #1a1a1a;
    --gd4f-text-light: #F0F8FF;
    --gd4f-text-muted: #a0a0a0;
    --gd4f-border: #333333;
    --gd4f-success: #28a745;
    --gd4f-warning: #ffc107;
    --gd4f-gradient: linear-gradient(135deg, #7FFF00 0%, #00CED1 100%);
    --gd4f-shadow: 0 4px 20px rgba(127, 255, 0, 0.15);
}

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

html {
    font-size: 62.5%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--gd4f-bg-dark);
    color: var(--gd4f-text-light);
    line-height: 1.5rem;
    font-size: 1.4rem;
    overflow-x: hidden;
}

a {
    color: var(--gd4f-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--gd4f-secondary);
}

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

/* Container */
.gd4f-container {
    width: 100%;
    max-width: 430px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header Styles */
.gd4f-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, var(--gd4f-bg-dark) 0%, rgba(10, 10, 10, 0.95) 100%);
    border-bottom: 1px solid var(--gd4f-border);
    padding: 1rem 0;
}

.gd4f-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1.5rem;
}

.gd4f-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.gd4f-logo img {
    width: 28px;
    height: 28px;
}

.gd4f-logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    background: var(--gd4f-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gd4f-header-actions {
    display: flex;
    gap: 0.8rem;
}

.gd4f-btn {
    padding: 0.6rem 1.2rem;
    border-radius: 2rem;
    font-weight: 600;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.gd4f-btn-primary {
    background: var(--gd4f-gradient);
    color: var(--gd4f-bg-dark);
}

.gd4f-btn-primary:hover {
    transform: scale(1.05);
    box-shadow: var(--gd4f-shadow);
}

.gd4f-btn-outline {
    background: transparent;
    border: 2px solid var(--gd4f-primary);
    color: var(--gd4f-primary);
}

.gd4f-btn-outline:hover {
    background: var(--gd4f-primary);
    color: var(--gd4f-bg-dark);
}

/* Mobile Menu Toggle */
.gd4f-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.gd4f-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gd4f-primary);
    transition: all 0.3s ease;
}

/* Mobile Menu */
.gd4f-mobile-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: var(--gd4f-bg-dark);
    z-index: 9999;
    transition: right 0.3s ease;
    padding: 2rem;
    overflow-y: auto;
}

.gd4f-mobile-menu.gd4f-menu-active {
    right: 0;
}

.gd4f-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: all 0.3s ease;
}

.gd4f-menu-overlay.gd4f-overlay-active {
    opacity: 1;
    visibility: visible;
}

.gd4f-menu-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--gd4f-text-light);
    font-size: 2.4rem;
    cursor: pointer;
}

.gd4f-nav-list {
    list-style: none;
    margin-top: 3rem;
}

.gd4f-nav-item {
    margin-bottom: 1.5rem;
}

.gd4f-nav-link {
    display: block;
    padding: 1rem;
    color: var(--gd4f-text-light);
    font-size: 1.4rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
}

.gd4f-nav-link:hover {
    background: var(--gd4f-bg-light);
    color: var(--gd4f-primary);
}

/* Main Content */
.gd4f-main {
    padding-top: 70px;
    padding-bottom: 80px;
}

/* Carousel/Slider */
.gd4f-carousel {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: 1rem;
    margin-bottom: 2rem;
}

.gd4f-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
    cursor: pointer;
}

.gd4f-slide.gd4f-slide-active {
    opacity: 1;
}

.gd4f-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gd4f-dots {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
}

.gd4f-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.gd4f-dot.gd4f-dot-active {
    background: var(--gd4f-primary);
    width: 20px;
    border-radius: 4px;
}

/* Section Styles */
.gd4f-section {
    padding: 2rem 1.5rem;
}

.gd4f-section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--gd4f-primary);
    text-align: center;
}

.gd4f-section-subtitle {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gd4f-secondary);
}

/* Game Grid */
.gd4f-game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.gd4f-game-card {
    background: var(--gd4f-bg-light);
    border-radius: 0.8rem;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--gd4f-border);
}

.gd4f-game-card:hover {
    transform: translateY(-3px);
    border-color: var(--gd4f-primary);
    box-shadow: 0 4px 15px rgba(127, 255, 0, 0.2);
}

.gd4f-game-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}

.gd4f-game-name {
    padding: 0.5rem;
    font-size: 1rem;
    text-align: center;
    color: var(--gd4f-text-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Category Badge */
.gd4f-category-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--gd4f-bg-light);
    border-radius: 1rem;
    font-size: 1.1rem;
    color: var(--gd4f-secondary);
    margin-bottom: 1rem;
    border: 1px solid var(--gd4f-secondary);
}

/* Content Cards */
.gd4f-card {
    background: var(--gd4f-bg-light);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--gd4f-border);
}

.gd4f-card-title {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--gd4f-primary);
    margin-bottom: 1rem;
}

.gd4f-card-text {
    font-size: 1.3rem;
    color: var(--gd4f-text-muted);
    line-height: 1.8;
}

/* FAQ Accordion */
.gd4f-faq-item {
    background: var(--gd4f-bg-light);
    border-radius: 0.8rem;
    margin-bottom: 1rem;
    overflow: hidden;
    border: 1px solid var(--gd4f-border);
}

.gd4f-faq-question {
    padding: 1.2rem;
    font-weight: 600;
    color: var(--gd4f-text-light);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gd4f-faq-answer {
    padding: 0 1.2rem 1.2rem;
    color: var(--gd4f-text-muted);
    font-size: 1.2rem;
}

/* Features List */
.gd4f-features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.gd4f-feature-item {
    background: var(--gd4f-bg-light);
    padding: 1rem;
    border-radius: 0.8rem;
    text-align: center;
    border: 1px solid var(--gd4f-border);
}

.gd4f-feature-icon {
    font-size: 2.4rem;
    color: var(--gd4f-primary);
    margin-bottom: 0.5rem;
}

.gd4f-feature-text {
    font-size: 1.1rem;
    color: var(--gd4f-text-light);
}

/* Promo Banner */
.gd4f-promo-banner {
    background: var(--gd4f-gradient);
    padding: 1.5rem;
    border-radius: 1rem;
    text-align: center;
    margin: 1.5rem 0;
}

.gd4f-promo-text {
    color: var(--gd4f-bg-dark);
    font-weight: 700;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

/* Footer */
.gd4f-footer {
    background: var(--gd4f-bg-light);
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--gd4f-border);
}

.gd4f-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.gd4f-footer-link {
    color: var(--gd4f-text-muted);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.gd4f-footer-link:hover {
    color: var(--gd4f-primary);
}

.gd4f-partners {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.gd4f-partner-logo {
    height: 20px;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.gd4f-partner-logo:hover {
    opacity: 1;
}

.gd4f-copyright {
    text-align: center;
    color: var(--gd4f-text-muted);
    font-size: 1.1rem;
}

/* Bottom Navigation */
.gd4f-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, rgba(26, 26, 26, 0.98) 0%, var(--gd4f-bg-dark) 100%);
    border-top: 1px solid var(--gd4f-border);
    padding: 0.5rem 0;
}

.gd4f-nav-buttons {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.gd4f-nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    padding: 0.5rem;
    min-width: 60px;
    min-height: 60px;
    background: none;
    border: none;
    color: var(--gd4f-text-muted);
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0.8rem;
}

.gd4f-nav-btn:hover,
.gd4f-nav-btn.gd4f-active {
    color: var(--gd4f-primary);
    background: rgba(127, 255, 0, 0.1);
}

.gd4f-nav-btn i,
.gd4f-nav-btn .material-icons {
    font-size: 24px;
}

.gd4f-nav-btn span {
    font-size: 10px;
    font-weight: 500;
}

/* Utilities */
.gd4f-text-center {
    text-align: center;
}

.gd4f-text-primary {
    color: var(--gd4f-primary);
}

.gd4f-text-secondary {
    color: var(--gd4f-secondary);
}

.gd4f-mb-1 { margin-bottom: 0.5rem; }
.gd4f-mb-2 { margin-bottom: 1rem; }
.gd4f-mb-3 { margin-bottom: 1.5rem; }
.gd4f-mb-4 { margin-bottom: 2rem; }

.gd4f-hidden-mobile {
    display: none;
}

/* Desktop Styles */
@media (min-width: 769px) {
    .gd4f-bottom-nav {
        display: none;
    }

    .gd4f-main {
        padding-bottom: 2rem;
    }

    .gd4f-container {
        max-width: 1200px;
    }

    .gd4f-game-grid {
        grid-template-columns: repeat(6, 1fr);
    }

    .gd4f-features-list {
        grid-template-columns: repeat(4, 1fr);
    }

    .gd4f-hidden-mobile {
        display: block;
    }

    .gd4f-menu-toggle {
        display: none;
    }

    .gd4f-carousel {
        height: 400px;
    }
}

/* Animation */
@keyframes gd4f-fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gd4f-animate-in {
    animation: gd4f-fadeIn 0.5s ease forwards;
}

/* RTP Bar */
.gd4f-rtp-bar {
    background: var(--gd4f-bg-light);
    border-radius: 0.5rem;
    overflow: hidden;
    height: 8px;
    margin-top: 0.5rem;
}

.gd4f-rtp-fill {
    height: 100%;
    background: var(--gd4f-gradient);
    transition: width 0.3s ease;
}

/* Badge */
.gd4f-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 0.3rem;
    font-size: 1rem;
    font-weight: 600;
}

.gd4f-badge-hot {
    background: var(--gd4f-accent);
    color: var(--gd4f-text-light);
}

.gd4f-badge-new {
    background: var(--gd4f-secondary);
    color: var(--gd4f-bg-dark);
}