main > .container {
    padding: 0 15px 20px;
}

.not-set {
    color: #c55;
    font-style: italic;
}

a.asc:after, a.desc:after {
    content: '';
    left: 3px;
    display: inline-block;
    width: 0;
    height: 0;
    border: solid 5px transparent;
    margin: 4px 4px 2px 4px;
    background: transparent;
}

a.asc:after {
    border-bottom: solid 7px #212529;
    border-top-width: 0;
}

a.desc:after {
    border-top: solid 7px #212529;
    border-bottom-width: 0;
}

.grid-view th {
    white-space: nowrap;
}

.hint-block {
    display: block;
    margin-top: 5px;
    color: #999;
}

.error-summary {
    color: #a94442;
    background: #fdf7f7;
    border-left: 3px solid #eed3d7;
    padding: 10px 20px;
    margin: 0 0 15px 0;
}

.nav li > form > button.logout {
    padding-top: 7px;
    color: rgba(255, 255, 255, 0.5);
}

@media(max-width:767px) {
    .nav li > form > button.logout {
        display: block;
        text-align: left;
        width: 100%;
        padding: 10px 0;
    }
}

.nav > li > form > button.logout:focus,
.nav > li > form > button.logout:hover {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.75);
}

.form-group {
    margin-bottom: 1rem;
}

.chat-message {
    transition: background 0.2s;
}
.chat-message:hover {
    background-color: #f8f9fa !important;
}
.delete-msg {
    text-decoration: none;
    font-size: 1.2rem;
    line-height: 1;
    opacity: 0.6;
}
.delete-msg:hover {
    opacity: 1;
}

#countdown {
    font-family: monospace;
    font-size: 1.1rem;
}

.webinar-card {
    transition: transform 0.2s, box-shadow 0.2s;
}
.webinar-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
    .table-responsive .btn-group {
        flex-wrap: wrap;
    }
    .btn-group .btn {
        margin-bottom: 0.25rem;
    }
    .card-header-tabs {
        flex-direction: column;
        border-bottom: none;
    }
    .nav-link {
        text-align: center;
    }
    .container.py-5 {
        padding-top: 1.5rem !important;
        padding-bottom: 1.5rem !important;
    }
}

.badge.bg-success, .badge.bg-danger, .badge.bg-primary, .badge.bg-secondary {
    font-weight: 500;
    padding: 0.35em 0.65em;
}
.table > :not(caption) > * > * {
    vertical-align: middle;
}
/* --- Полировка WebinarConnect --- */
.navbar-nav .nav-link.active {
    background-color: rgba(255,255,255,0.15);
    border-radius: 8px;
    color: #fff !important;
}
.form-control:focus,
.form-select:focus {
    border-color: #3b82f6;
    box-shadow: 0 0 0 0.2rem rgba(59,130,246,0.15);
}
.badge { font-weight: 500; }
.btn { transition: all 0.15s ease-in-out; }
.chat-message { word-break: break-word; }
/* читаемый таймер обратного отсчёта */
#countdown { font-variant-numeric: tabular-nums; }