/**
 * 789bingo - Design System CSS
 * All classes prefixed with 'gefa-' to avoid conflicts
 * Mobile-first responsive design
 * Version: 1.0.0
 */

/* ============================================
   CSS Custom Properties (Variables)
   ============================================ */
:root {
    /* Color Palette */
    --gefa-primary: #FF9500;
    --gefa-secondary: #FFD700;
    --gefa-accent: #FFCCCB;
    --gefa-dark: #1A1A2E;
    --gefa-gray: #6C757D;
    --gefa-light: #F8F9FA;
    --gefa-white: #FFFFFF;

    /* Typography */
    --gefa-font-base: 62.5%;
    --gefa-font-size-sm: 1.2rem;
    --gefa-font-size-md: 1.4rem;
    --gefa-font-size-lg: 1.6rem;
    --gefa-font-size-xl: 2.4rem;
    --gefa-line-height: 1.5rem;

    /* Spacing */
    --gefa-spacing-xs: 0.5rem;
    --gefa-spacing-sm: 1rem;
    --gefa-spacing-md: 1.5rem;
    --gefa-spacing-lg: 2rem;
    --gefa-spacing-xl: 3rem;

    /* Border Radius */
    --gefa-radius-sm: 0.4rem;
    --gefa-radius-md: 0.8rem;
    --gefa-radius-lg: 1.2rem;

    /* Transitions */
    --gefa-transition-fast: 0.2s ease;
    --gefa-transition-normal: 0.3s ease;
}

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

html {
    font-size: var(--gefa-font-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--gefa-font-size-md);
    line-height: var(--gefa-line-height);
    color: var(--gefa-dark);
    background-color: var(--gefa-light);
    min-height: 100vh;
    padding-bottom: 80px; /* Space for bottom nav on mobile */
}

@media (min-width: 769px) {
    body {
        padding-bottom: 0;
    }
}

/* ============================================
   Layout Classes
   ============================================ */
.gefa-container {
    max-width: 430px;
    margin: 0 auto;
    padding: 0 var(--gefa-spacing-sm);
    width: 100%;
}

.gefa-wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--gefa-spacing-md);
}

.gefa-grid {
    display: grid;
    gap: var(--gefa-spacing-sm);
}

.gefa-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.gefa-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

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

@media (min-width: 769px) {
    .gefa-container {
        max-width: 1200px;
        padding: 0 var(--gefa-spacing-md);
    }
}

/* ============================================
   Header Component
   ============================================ */
.gefa-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--gefa-dark);
    color: var(--gefa-white);
    padding: var(--gefa-spacing-sm) 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all var(--gefa-transition-normal);
}

.gefa-header.gefa-header-scrolled {
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
}

.gefa-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gefa-spacing-sm);
}

.gefa-logo {
    display: flex;
    align-items: center;
    gap: var(--gefa-spacing-xs);
    text-decoration: none;
    color: var(--gefa-white);
}

.gefa-logo-icon {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

.gefa-logo-text {
    font-size: var(--gefa-font-size-lg);
    font-weight: 700;
    color: var(--gefa-primary);
}

.gefa-header-nav {
    display: flex;
    align-items: center;
    gap: var(--gefa-spacing-sm);
}

.gefa-btn {
    padding: 0.6rem 1.2rem;
    border-radius: var(--gefa-radius-sm);
    font-size: var(--gefa-font-size-sm);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--gefa-transition-fast);
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
}

.gefa-btn-primary {
    background: var(--gefa-primary);
    color: var(--gefa-white);
}

.gefa-btn-primary:hover {
    background: #E68600;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.3);
}

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

.gefa-btn-secondary:hover {
    background: var(--gefa-primary);
    color: var(--gefa-white);
}

.gefa-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--gefa-spacing-xs);
    width: 32px;
    height: 32px;
    justify-content: center;
}

.gefa-menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gefa-white);
    border-radius: 2px;
    transition: all var(--gefa-transition-fast);
}

.gefa-menu-toggle:hover span {
    background: var(--gefa-primary);
}

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

/* ============================================
   Mobile Menu
   ============================================ */
.gefa-mobile-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gefa-dark);
    z-index: 9999;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--gefa-transition-normal);
    padding: var(--gefa-spacing-md);
}

.gefa-mobile-menu.gefa-menu-open {
    transform: translateX(0);
}

.gefa-mobile-menu a {
    display: block;
    color: var(--gefa-white);
    text-decoration: none;
    padding: var(--gefa-spacing-sm);
    font-size: var(--gefa-font-size-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--gefa-transition-fast);
}

.gefa-mobile-menu a:hover {
    background: rgba(255, 149, 0, 0.1);
    color: var(--gefa-primary);
    padding-left: calc(var(--gefa-spacing-sm) + var(--gefa-spacing-xs));
}

/* ============================================
   Main Content
   ============================================ */
main {
    padding-top: 70px;
    min-height: calc(100vh - 200px);
}

/* ============================================
   Carousel Component
   ============================================ */
.gefa-carousel {
    position: relative;
    margin-bottom: var(--gefa-spacing-md);
    border-radius: var(--gefa-radius-md);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.gefa-carousel-slide {
    display: none;
}

.gefa-carousel-slide:first-child {
    display: block;
}

.gefa-carousel-slide img {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   Card Component
   ============================================ */
.gefa-card {
    background: var(--gefa-white);
    border-radius: var(--gefa-radius-md);
    padding: var(--gefa-spacing-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all var(--gefa-transition-normal);
}

.gefa-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.gefa-card-title {
    font-size: var(--gefa-font-size-lg);
    font-weight: 700;
    color: var(--gefa-dark);
    margin-bottom: var(--gefa-spacing-sm);
}

.gefa-card-text {
    font-size: var(--gefa-font-size-md);
    color: var(--gefa-gray);
    line-height: 1.6;
}

/* ============================================
   Game Grid Component
   ============================================ */
.gefa-game-section {
    margin-bottom: var(--gefa-spacing-xl);
}

.gefa-section-title {
    font-size: var(--gefa-font-size-xl);
    font-weight: 700;
    color: var(--gefa-dark);
    margin-bottom: var(--gefa-spacing-md);
    display: flex;
    align-items: center;
    gap: var(--gefa-spacing-xs);
}

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

.gefa-game-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--gefa-spacing-sm);
}

.gefa-game-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    transition: transform var(--gefa-transition-fast);
}

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

.gefa-game-icon {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: var(--gefa-radius-sm);
    margin-bottom: var(--gefa-spacing-xs);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.gefa-game-name {
    font-size: 1rem;
    color: var(--gefa-dark);
    text-align: center;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============================================
   Text Components
   ============================================ */
.gefa-h1 {
    font-size: var(--gefa-font-size-xl);
    font-weight: 700;
    color: var(--gefa-dark);
    margin-bottom: var(--gefa-spacing-md);
    line-height: 1.3;
}

.gefa-h2 {
    font-size: var(--gefa-font-size-lg);
    font-weight: 700;
    color: var(--gefa-dark);
    margin-bottom: var(--gefa-spacing-sm);
    margin-top: var(--gefa-spacing-lg);
}

.gefa-h3 {
    font-size: var(--gefa-font-size-md);
    font-weight: 600;
    color: var(--gefa-dark);
    margin-bottom: var(--gefa-spacing-sm);
}

.gefa-p {
    font-size: var(--gefa-font-size-md);
    color: var(--gefa-gray);
    line-height: 1.6;
    margin-bottom: var(--gefa-spacing-sm);
}

.gefa-text-primary {
    color: var(--gefa-primary);
    font-weight: 600;
}

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

/* ============================================
   Link Components
   ============================================ */
.gefa-link {
    color: var(--gefa-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--gefa-transition-fast);
}

.gefa-link:hover {
    color: #E68600;
    text-decoration: underline;
}

/* ============================================
   Bottom Navigation (Mobile Only)
   ============================================ */
.gefa-bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--gefa-dark);
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 60px;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

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

.gefa-bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    min-height: 60px;
    text-decoration: none;
    color: var(--gefa-white);
    transition: all var(--gefa-transition-fast);
    cursor: pointer;
}

.gefa-bottom-nav-item:hover {
    transform: scale(1.1);
}

.gefa-bottom-nav-item:active {
    transform: scale(0.95);
}

.gefa-bottom-nav-icon {
    font-size: 24px;
    margin-bottom: 2px;
}

.gefa-bottom-nav-text {
    font-size: 10px;
    font-weight: 500;
}

/* ============================================
   Footer Component
   ============================================ */
.gefa-footer {
    background: var(--gefa-dark);
    color: var(--gefa-white);
    padding: var(--gefa-spacing-xl) 0;
    margin-top: var(--gefa-spacing-xl);
}

.gefa-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gefa-spacing-sm);
    margin-bottom: var(--gefa-spacing-md);
}

.gefa-footer-link {
    color: var(--gefa-white);
    text-decoration: none;
    font-size: var(--gefa-font-size-sm);
    padding: var(--gefa-spacing-xs);
    transition: color var(--gefa-transition-fast);
}

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

.gefa-partners {
    display: flex;
    flex-wrap: wrap;
    gap: var(--gefa-spacing-sm);
    justify-content: center;
    margin-bottom: var(--gefa-spacing-md);
}

.gefa-partner-logo {
    width: 60px;
    height: 30px;
    object-fit: contain;
    opacity: 0.8;
    transition: opacity var(--gefa-transition-fast);
}

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

.gefa-copyright {
    text-align: center;
    font-size: var(--gefa-font-size-sm);
    color: var(--gefa-gray);
    padding-top: var(--gefa-spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   Utility Classes
   ============================================ */
.gefa-mt-1 { margin-top: var(--gefa-spacing-sm); }
.gefa-mt-2 { margin-top: var(--gefa-spacing-md); }
.gefa-mt-3 { margin-top: var(--gefa-spacing-lg); }
.gefa-mb-1 { margin-bottom: var(--gefa-spacing-sm); }
.gefa-mb-2 { margin-bottom: var(--gefa-spacing-md); }
.gefa-mb-3 { margin-bottom: var(--gefa-spacing-lg); }

.gefa-py-1 { padding-top: var(--gefa-spacing-sm); padding-bottom: var(--gefa-spacing-sm); }
.gefa-py-2 { padding-top: var(--gefa-spacing-md); padding-bottom: var(--gefa-spacing-md); }

.gefa-text-white { color: var(--gefa-white); }
.gefa-bg-primary { background: var(--gefa-primary); }