:root {
    --bg: #f4f6fb;
    --panel: #ffffff;
    --accent: #0f766e;
    --accent-strong: #115e59;
    --text: #0f172a;
    --muted: #475569;
    --danger: #b91c1c;
    --border: #dbe1ea;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background:
        radial-gradient(circle at top right, #dbeafe 0%, transparent 44%),
        radial-gradient(circle at top left, #d1fae5 0%, transparent 32%),
        var(--bg);
    color: var(--text);
}

.app-shell {
    max-width: 960px;
    margin: 0 auto;
    padding: 16px;
}

.app-header,
.view-header,
.row-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

h1,
h2,
h3 {
    margin: 8px 0;
}

.view {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
    margin-top: 12px;
}

.hidden {
    display: none;
}

.list {
    list-style: none;
    padding: 0;
    margin: 12px 0 0;
    display: grid;
    gap: 8px;
}

.list-item {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px;
    background: #f8fafc;
}

.channel-line {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.channel-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.channel-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.badge {
    display: inline-block;
    border-radius: 999px;
    background: #e2e8f0;
    color: #0b1220;
    font-size: 12px;
    padding: 2px 8px;
}

button,
input,
textarea {
    font: inherit;
}

button {
    border: 0;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    padding: 8px 12px;
    cursor: pointer;
}

button:hover {
    background: var(--accent-strong);
}

.secondary {
    background: #334155;
}

.secondary:hover {
    background: #1e293b;
}

.danger {
    background: #b91c1c;
}

.danger:hover {
    background: #991b1b;
}

input[type="search"],
input[type="text"],
input[type="number"],
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px;
    margin-top: 4px;
}

label {
    display: block;
    margin-top: 10px;
}

.readonly-grid {
    margin-top: 6px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 14px;
}

.readonly-item {
    padding: 2px 0;
    border-bottom: 1px dashed var(--border);
}

.readonly-label {
    display: block;
    font-size: 12px;
    color: var(--muted);
}

.readonly-value {
    display: block;
    margin-top: 3px;
    font-weight: 600;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-row input {
    width: auto;
    margin: 0;
}

#stopWordsTable {
    width: 100%;
    border-collapse: collapse;
    margin-top: 8px;
}

#stopWordsTable th,
#stopWordsTable td {
    border: 1px solid var(--border);
    padding: 6px;
    vertical-align: middle;
}

#stopWordsTable input[type="text"] {
    margin: 0;
}

#stopWordsTable input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.status {
    border-radius: 10px;
    padding: 10px;
    margin-top: 12px;
    border: 1px solid var(--border);
    background: #f8fafc;
}

.status.error {
    border-color: #fecaca;
    background: #fff1f2;
    color: var(--danger);
}

.status.success {
    border-color: #bbf7d0;
    background: #f0fdf4;
    color: #166534;
}

.hint {
    margin-top: 12px;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #fde68a;
    background: #fffbeb;
}

.muted {
    color: var(--muted);
    font-size: 13px;
}

@media (max-width: 640px) {
    .app-shell {
        padding: 10px;
    }

    .readonly-grid {
        grid-template-columns: 1fr;
    }

    .channel-line {
        flex-direction: column;
        align-items: flex-start;
    }
}