body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #ffffff;
}

.participant-hero {
    padding: 120px 20px 80px;
    background: linear-gradient(135deg, #000000 0%, #1f1f1f 100%);
    color: #ffffff;
    text-align: center;
}

.participant-hero-card {
    max-width: 900px;
    margin: 0 auto;
}

.participant-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.participant-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0;
}

.participant-tabs-section {
    padding: 40px 20px 80px;
    background: #f8f9fa;
}

.participant-tabs {
    justify-content: center;
    border-bottom: 2px solid #e5e5e5;
    gap: 10px;
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    position: sticky;
    top: 0;
    z-index: 20;
    background: #f8f9fa;
    padding: 15px 0;
    margin-bottom: 20px;
}

.participant-tabs .nav-link {
    border: none;
    border-radius: 999px;
    padding: 10px 22px;
    color: #000000;
    font-weight: 600;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.participant-tabs .nav-link.active {
    background: #1AA45A;
    color: #ffffff;
}

.participant-tab-content {
    margin-top: 40px;
}

.participant-tab-content .row {
    margin-bottom: 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: #000000;
    margin-bottom: 10px;
}

.section-subtitle {
    color: #666666;
    margin-bottom: 0;
}

.participant-card {
    background: #ffffff;
    border: 1px solid #e6e6e6;
    border-radius: 12px;
    padding: 20px;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.participant-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.1);
}

.participant-logo {
    max-width: 100%;
    max-height: 90px;
    object-fit: contain;
}

.participant-placeholder {
    text-align: center;
    font-weight: 600;
    color: #000000;
    font-size: 14px;
}

.empty-state {
    text-align: center;
    color: #666666;
    margin: 0;
}

.conferencier-card {
    max-width: 720px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.conferencier-card {
    margin-top: 32px;
}

.speaker-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 24px;
    height: 100%;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(0, 0, 0, 0.06);
    text-align: center;
}

.speaker-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.speaker-link:hover {
    color: inherit;
}

.speaker-card .speaker-name,
.speaker-card .speaker-meta,
.speaker-card .speaker-theme {
    text-decoration: none;
}

.speaker-details-btn {
    display: inline-block;
    margin-top: 16px;
    padding: 8px 18px;
    border-radius: 999px;
    background: #1AA45A;
    color: #ffffff;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    text-decoration: none;
    transition: background 0.2s ease, transform 0.2s ease;
}

.speaker-details-btn:hover {
    background: #158a4f;
    color: #ffffff;
    transform: translateY(-2px);
}

.speaker-initials {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: #000000;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    letter-spacing: 1px;
}

.speaker-photo {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    border: 3px solid #1AA45A;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.speaker-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: #000000;
}

.speaker-meta {
    font-size: 14px;
    color: #666666;
    margin-bottom: 12px;
}

.speaker-theme {
    font-size: 14px;
    color: #333333;
    margin-bottom: 0;
}

.conferencier-text {
    color: #444444;
    font-size: 16px;
    margin-bottom: 25px;
}

.conferencier-btn {
    display: inline-block;
    background: #D5373A;
    color: #ffffff;
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background 0.2s ease, transform 0.2s ease;
}

.conferencier-btn:hover {
    background: #b92f33;
    transform: translateY(-2px);
    color: #ffffff;
}

@media (max-width: 768px) {
    .participant-hero {
        padding: 100px 20px 60px;
    }

    .participant-title {
        font-size: 40px;
    }

    .participant-subtitle {
        font-size: 16px;
    }

    .participant-tabs-section {
        padding: 30px 16px 60px;
    }

    .section-title {
        font-size: 28px;
    }

    .participant-card {
        height: 120px;
        padding: 16px;
    }

    .participant-tabs {
        top: 0;
        padding: 10px 0;
        gap: 6px;
        flex-wrap: nowrap;
        overflow-x: hidden;
        justify-content: space-between;
    }

    .participant-tabs .nav-link {
        white-space: nowrap;
        text-align: center;
        flex: 1 1 0;
        padding: 8px 6px;
        font-size: 12px;
    }

    .participant-tab-content {
        margin-top: 30px;
    }

    .conferencier-card {
        margin-top: 24px;
        padding: 28px 20px;
    }
}