body {
    background: #f4f6f9;
}
.event-wrapper {
    background: white;
    border-radius: 28px;
    padding: 40px;
    box-shadow: 0 8px 40px rgba(0,0,0,.08);
    border: 1px solid rgba(0,0,0,.05);
    margin-bottom: 50px;
}


.hero-50 {
    background: linear-gradient(135deg,#0d1b2a,#1b263b);
    color: white;
    padding: 70px 30px;
    border-radius: 24px;
    margin-bottom: 50px;
    position: relative;
    overflow: hidden;
}

    .hero-50 h1 {
        font-size: 3rem;
        font-weight: 700;
    }

    .hero-50 p {
        font-size: 1.15rem;
        opacity: .9;
        max-width: 800px;
    }

.section-title {
    font-size: 1.7rem;
    font-weight: 700;
    color: #1b263b;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #edf1f5;
}

.presentation-card {
    border: none;
    border-radius: 20px;
    overflow: hidden;
    transition: all .25s ease;
    background: white;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
    height: 100%;
}

    .presentation-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 12px 30px rgba(0,0,0,.15);
    }

.card-top {
    background: #f8f9fa;
    padding: 30px;
    text-align: center;
}

    .card-top i {
        font-size: 64px;
    }

.card-body-custom {
    padding: 25px;
}

.speaker-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: #1b263b;
}

.presentation-desc {
    color: #6c757d;
    min-height: 50px;
}

.btn-custom {
    border-radius: 10px;
    padding: 10px 18px;
}

.event-info {
    background: #f8f9fa;
    border-left: 5px solid #e91919;
    padding: 20px;
    border-radius: 10px;
    margin-top:-10px;
    margin-bottom: 40px;
}

.mini-card {
    background: white;
    border-radius: 18px;
    padding: 18px 14px;
    text-align: center;
    box-shadow: 0 3px 14px rgba(0,0,0,.07);
    transition: all .2s ease;
    height: 100%;

    border: 1px solid rgba(0,0,0,.05);
    backdrop-filter: blur(6px);
}

    .mini-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 10px 24px rgba(0,0,0,.12);
    }

.pdf-icon i {
    font-size: 42px;
    color: #dc3545;
}

.mini-title {
    font-weight: 700;
    font-size: .92rem;
    line-height: 1.3;
    margin-top: 14px;
    color: #1b263b;
    min-height: 42px;
}

.mini-subtitle {
    color: #6c757d;
    font-size: .78rem;
    line-height: 1.4;
    margin-top: 6px;
    min-height: 40px;
}
.mini-card .btn {
    border-radius: 10px;
    font-size: .8rem;
    padding: 8px 10px;
    text-decoration: none;
}


.video-thumb {
    position: relative;
    cursor: pointer;
}

    .video-thumb img {
        width: 100%;
        height: 170px;
        object-fit: cover;
    }

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 60px;
    text-shadow: 0 2px 10px rgba(0,0,0,.5);
}



.video-card-link {
    text-decoration: none;
    color: inherit;
}
.video-card {
    cursor: pointer;
}

.video-card {
    background: white;
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 4px 18px rgba(0,0,0,.08);
    transition: all .25s ease;
    height: 100%;

    border: 1px solid rgba(0,0,0,.05);
    backdrop-filter: blur(6px);
}

    .video-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 12px 30px rgba(0,0,0,.15);
    }

.video-thumb {
    position: relative;
}

    .video-thumb img {
        width: 100%;
        height: 170px;
        object-fit: cover;
        display: block;
    }

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 72px;
    text-shadow: 0 3px 12px rgba(0,0,0,.6);
    transition: .2s ease;
}

.video-card:hover .play-overlay {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 14px;
}

.video-title {
    font-size: .95rem;
    font-weight: 700;
    color: #1b263b;
}

.video-subtitle {
    color: #6c757d;
    font-size: .92rem;
    margin-top: 6px;
    min-height: 40px;
}

.ratio iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.modal-video .modal-content {
    background: #000;
    border: none;
}

.modal-video .modal-header {
    background: #fff;
}

.modal-video .modal-body {
    padding: 0;
    background: #000;
}



#ytPlayer {
    width: 100% !important;
    height: 80vh !important;
    border: 0;
}

#videoModal .modal-dialog {
    max-width: 1200px;
}

#videoModal .modal-body {
    padding: 0 !important;
}

.content-section {
    background: #fff;
    border-radius: 24px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,.08);
    border: 1px solid #edf1f5;
}

.videos-section {
    background: linear-gradient( 180deg, #fafcff 0%, #f4f8ff 100% );
}

.section-badge {
    display: inline-block;
    background: #e9f2ff;
    color: #0d6efd;
    font-size: .75rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 50px;
    margin-bottom: 12px;
}

.video-badge {
    background: #fff3cd;
    color: #856404;
}

/*accordion*/
.event-accordion .accordion-item {
    border: none;
    margin-bottom: 18px;
    border-radius: 20px !important;
    overflow: hidden;
    box-shadow: 0 6px 24px rgba(0,0,0,.08);
}

.event-accordion .accordion-button {
    background: white;
    padding: 22px 28px;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: none;
}

    .event-accordion .accordion-button:not(.collapsed) {
        background: #f8fafc;
        color: #1b263b;
    }

    .event-accordion .accordion-button:focus {
        box-shadow: none;
    }

.section-icon {
    font-size: 1.6rem;
    width: 40px;
    text-align: center;
}

.section-title-acc {
    flex: 1;
}

.event-accordion .accordion-body {
    background: white;
    padding: 30px;
}

.event-accordion .accordion-button:not(.collapsed) {
    background: linear-gradient( 90deg, rgba(13,110,253,.08), rgba(255,255,255,1) );
}

#presentationsAccordion .accordion-button {
    border-left: 5px solid #0d6efd;
}

#videosAccordion .accordion-button {
    border-left: 5px solid #dc3545;
}

#photosAccordion .accordion-button {
    border-left: 5px solid #198754;
}