body {
    background: #f4f8fa;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 100vh;
}

.back-btn {
    background: #425b76;
    color: #ffffff;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 10px 22px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    margin: 24px auto 12px;
    display: flex;
    align-items: center;
    font-weight: 20px;
    gap: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    transition: all 0.25s ease;
    text-decoration: none;
    font-family: 'Lexend', Helvetica, Arial, sans-serif;
}

.back-btn::before {
    content: '←';
    font-size: 18px;
    line-height: 1;
    color: #ffffff;
    transition: transform 0.2s ease;
}

.back-btn:hover {
    background: #647d96;
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.2);
    transform: translateY(-1px);
}

.back-btn:hover::before {
    transform: translateX(-2px);
}

.back-btn:active {
    transform: scale(0.98);
    background: #545b62;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

@media (max-width: 768px) {
    .back-btn {
        font-size: 14px;
        padding: 8px 18px;
        margin-top: 16px;
    }
}

.meetings-iframe-container {
    width: 100%;
    max-width: 900px;
}