/* ===== ACTIVITY DETAIL PAGE ===== */
.activity-detail {
    min-height: 100vh;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.activity-detail::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
    margin-bottom: 40px;
}

.breadcrumb a {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    padding: 10px 15px;
    border-radius: 8px;
    background: rgba(211, 47, 47, 0.05);
}

.breadcrumb a:hover {
    background: rgba(211, 47, 47, 0.1);
    transform: translateX(-5px);
}

.breadcrumb i {
    font-size: 0.9rem;
}

/* ===== ACTIVITY HEADER ===== */
.activity-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 60px;
    align-items: start;
}

@media (max-width: 992px) {
    .activity-header {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* ===== ACTIVITY IMAGE ===== */
.activity-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(33, 33, 33, 0.15);
    height: fit-content;
}

.activity-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.activity-image:hover img {
    transform: scale(1.05);
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.1), rgba(46, 125, 50, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 5rem;
}

/* ===== BADGES ===== */
.badge {
    position: absolute;
    top: 20px;
    padding: 8px 16px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.badge.featured {
    left: 20px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    color: #333;
    box-shadow: 0 4px 15px rgba(255, 165, 0, 0.3);
}

.badge.featured i {
    margin-right: 5px;
    animation: sparkle 2s infinite;
}

@keyframes sparkle {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.badge.status {
    right: 20px;
    color: white;
}

.badge.status-published {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
}

.badge.status-draft {
    background: linear-gradient(135deg, #9e9e9e, #757575);
}

.badge.status-cancelled {
    background: linear-gradient(135deg, #f44336, #d32f2f);
}

.badge.status-postponed {
    background: linear-gradient(135deg, #ff9800, #f57c00);
}

.badge.price {
    bottom: 20px;
    right: 20px;
    background: white;
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary);
}

/* ===== ACTIVITY INFO ===== */
.activity-info {
    padding: 30px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(33, 33, 33, 0.1);
    position: relative;
}

.activity-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 20px 20px 0 0;
}

/* ===== CATEGORIES ===== */
.activity-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.category-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.category-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-color: currentColor;
}

.category-tag i {
    font-size: 0.8rem;
}

/* ===== TITLE ===== */
.activity-title {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 25px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

@media (max-width: 768px) {
    .activity-title {
        font-size: 2.2rem;
    }
}

/* ===== META INFO ===== */
.activity-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 2px solid #f0f0f0;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-light);
    font-size: 1.1rem;
}

.meta-item i {
    color: var(--primary);
    font-size: 1.2rem;
    width: 20px;
    text-align: center;
}

.meta-item span {
    font-weight: 500;
}

/* ===== REGISTER BUTTON ===== */
.btn-register {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 35px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(211, 47, 47, 0.3);
}

.btn-register::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.7s;
}

.btn-register:hover::before {
    left: 100%;
}

.btn-register:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(211, 47, 47, 0.4);
}

.btn-register:active {
    transform: translateY(-1px);
}

.btn-register i {
    font-size: 1.2rem;
}

/* ===== ACTIVITY DESCRIPTION ===== */
.activity-description {
    background: white;
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 30px rgba(33, 33, 33, 0.1);
    margin-top: 40px;
}

.activity-description h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 3px solid var(--primary);
    position: relative;
}

.activity-description h2::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100px;
    height: 3px;
    background: var(--secondary);
}

.activity-description p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 25px;
}

.activity-description ul,
.activity-description ol {
    margin-bottom: 25px;
    padding-left: 30px;
}

.activity-description li {
    margin-bottom: 10px;
    color: var(--text-light);
    line-height: 1.6;
}

.activity-description strong {
    color: var(--dark);
    font-weight: 600;
}

/* ===== ADDITIONAL SECTIONS (pour extension future) ===== */
.activity-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.detail-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.detail-card h3 {
    font-size: 1.4rem;
    color: var(--dark);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.detail-card h3 i {
    color: var(--primary);
}

/* ===== SPEAKERS ===== */
.speakers-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.speaker-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.speaker-item:hover {
    background: rgba(211, 47, 47, 0.05);
    transform: translateX(5px);
}

.speaker-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.speaker-info h4 {
    color: var(--dark);
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.speaker-info p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .activity-detail {
        padding: 100px 0 60px;
    }
    
    .activity-image img,
    .image-placeholder {
        height: 300px;
    }
    
    .activity-description {
        padding: 35px 25px;
    }
    
    .activity-description h2 {
        font-size: 1.8rem;
    }
    
    .activity-meta {
        gap: 15px;
        flex-direction: column;
    }
    
    .badge {
        font-size: 0.75rem;
        padding: 6px 12px;
    }
}

@media (max-width: 576px) {
    .activity-title {
        font-size: 1.8rem;
    }
    
    .activity-description {
        padding: 30px 20px;
    }
    
    .btn-register {
        width: 100%;
        justify-content: center;
    }
    
    .category-tag {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .activity-info {
        padding: 25px 20px;
    }
}

/* ===== LOADING ANIMATION ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.activity-header,
.activity-description {
    animation: fadeInUp 0.6s ease-out;
}

.activity-description {
    animation-delay: 0.2s;
    animation-fill-mode: both;
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
    box-shadow: 0 5px 20px rgba(211, 47, 47, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(211, 47, 47, 0.4);
}