/* ========================================
   ACTIVITY SECTION - RETROGRADOS GAMING
   Sección de "Actividad Reciente"
======================================== */

.activity-section {
    padding: 5rem 5%;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
    position: relative;
    overflow: hidden;
}

/* Particles background (opcional - similar a Packs section) */
.activity-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 255, 204, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 0, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.activity-container {
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ========================================
   HEADER
======================================== */
.activity-header {
    text-align: center;
    margin-bottom: 3rem;
}

.activity-title {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-white), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.activity-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   TABS NAVIGATION
======================================== */
.activity-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.activity-tab {
    background: rgba(26, 26, 46, 0.6);
    border: 2px solid rgba(0, 255, 204, 0.2);
    color: var(--text-gray);
    padding: 0.8rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.activity-tab::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 3px;
    background: var(--accent-cyan);
    transition: transform 0.3s ease;
}

.activity-tab:hover {
    border-color: var(--accent-cyan);
    color: var(--text-white);
    transform: translateY(-2px);
}

.activity-tab.active {
    background: rgba(0, 255, 204, 0.1);
    border-color: var(--accent-cyan);
    color: var(--text-white);
    box-shadow: 0 0 20px rgba(0, 255, 204, 0.3);
}

.activity-tab.active::before {
    transform: translateX(-50%) scaleX(1);
}

.tab-icon {
    margin-right: 0.5rem;
}

/* ========================================
   CONTENT GRID
======================================== */
.activity-content {
    position: relative;
}

.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.4s ease;
}

.activity-grid.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   GAME CARD
======================================== */
.activity-card {
    background: rgba(26, 26, 46, 0.8);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(0, 255, 204, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    backdrop-filter: blur(10px);
}

.activity-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-cyan);
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(0, 255, 204, 0.3);
}

/* Card Image */
.activity-card-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a2e, #0a0a0f);
}

.activity-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.activity-card:hover .activity-card-image img {
    transform: scale(1.1);
}

/* Loading skeleton */
.activity-card-image.loading {
    background: linear-gradient(
        90deg,
        rgba(26, 26, 46, 0.8) 0%,
        rgba(0, 255, 204, 0.1) 50%,
        rgba(26, 26, 46, 0.8) 100%
    );
    background-size: 200% 100%;
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Overlay gradient */
.activity-card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(to top, rgba(26, 26, 46, 0.95), transparent);
}

/* Card Content */
.activity-card-content {
    padding: 1.5rem;
    position: relative;
}

.activity-card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.8rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-card-meta {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.activity-card-platform,
.activity-card-server {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.activity-card-platform {
    background: rgba(0, 255, 204, 0.2);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 255, 204, 0.4);
}

.activity-card-server {
    background: rgba(255, 0, 255, 0.2);
    color: var(--accent-magenta);
    border: 1px solid rgba(255, 0, 255, 0.4);
}

.activity-card-description {
    font-size: 0.9rem;
    color: var(--text-gray);
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.activity-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.activity-card-time {
    font-size: 0.85rem;
    color: var(--text-gray);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.activity-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--accent-cyan), #00cc99);
    color: var(--primary-dark);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.85rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.activity-card-cta:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(0, 255, 204, 0.4);
}

/* ========================================
   LOADING STATE
======================================== */
.activity-loading {
    text-align: center;
    padding: 4rem 0;
}

.activity-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(0, 255, 204, 0.2);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.activity-loading-text {
    color: var(--text-gray);
    font-size: 1rem;
}

/* ========================================
   EMPTY STATE
======================================== */
.activity-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-gray);
}

.activity-empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.activity-empty-text {
    font-size: 1.1rem;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 1024px) {
    .activity-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .activity-section {
        padding: 3rem 5%;
    }
    
    .activity-tabs {
        flex-direction: column;
        align-items: stretch;
    }
    
    .activity-tab {
        text-align: center;
    }
    
    .activity-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .activity-card-image {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .activity-card-content {
        padding: 1rem;
    }
    
    .activity-card-title {
        font-size: 1rem;
    }
    
    .activity-card-meta {
        gap: 0.5rem;
    }
}