.event-card {
    --bs-card-bg: #ffffff;
    background: #ffffff;
    color: var(--text-body);
    transition: all 0.3s ease;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(185, 193, 204, 0.15);
}

.event-card .card-body,
.event-card .card-footer {
    background: #ffffff;
    color: var(--text-body);
}

.btn-register {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 12px;
    color: #fff;
    background: linear-gradient(135deg, #0066FF 0%, #FF6B00 100%);
    background-size: 200% auto;
    box-shadow: 0 6px 20px rgba(0,102,255,0.25);
    transition: background-position 0.4s, box-shadow 0.3s, transform 0.15s;
    cursor: pointer;
    display: block;
    text-align: center;
    text-decoration: none;
}
.btn-register:hover {
    background-position: right center;
    box-shadow: 0 8px 28px rgba(255,107,0,0.3);
    transform: translateY(-1px);
    color: #fff;
}
.btn-register:active { transform: translateY(0); }

.event-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px var(--blue-glow) !important;
    border-color: rgba(0, 102, 255, 0.4);
}

.event-image-holder {
    height: 200px;
    background: var(--gradient-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.event-image-holder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.event-image-holder .placeholder-icon {
    font-size: 52px;
    color: rgba(255, 255, 255, 0.6);
}

.event-date-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: white;
    padding: 8px 12px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}

.event-date-badge .day {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1;
    color: var(--blue-primary);
}

.event-date-badge .month {
    font-size: 0.72rem;
    text-transform: uppercase;
    color: var(--orange-primary);
    font-weight: 700;
    letter-spacing: 0.5px;
}

.past-event .event-image-holder {
    background: linear-gradient(135deg, #64748B 0%, #94A3B8 100%);
    filter: grayscale(20%);
}

.past-event.event-card:hover {
    box-shadow: 0 16px 48px var(--orange-glow) !important;
    border-color: rgba(255, 107, 0, 0.35);
}

.section-header {
    position: relative;
    padding-bottom: 5px;
    margin-bottom: 15px;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-blue);
    border-radius: 2px;
}

.section-header.past-header::after {
    background: var(--gradient-orange);
}