.yt-ai-chart-admin {
    display: grid;
    gap: 16px;
    padding: 8px 2px;
}

.yt-ai-chart-admin label {
    display: grid;
    gap: 7px;
    font-weight: 600;
}

.yt-ai-chart-admin input[type="text"],
.yt-ai-chart-admin input[type="date"],
.yt-ai-chart-admin textarea {
    width: 100%;
}

.yt-ai-chart-admin textarea {
    padding: 14px;
    border-color: #b7a89b;
    border-radius: 8px;
    background: #1f1b18;
    color: #f8eee5;
    font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    tab-size: 2;
}

.yt-ai-chart-lead {
    margin: 0;
    color: #5f5148;
}

.yt-ai-chart-switch {
    grid-template-columns: auto 1fr;
    align-items: center;
    justify-content: start;
}

.yt-ai-chart-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(180px, 1fr);
    gap: 14px;
}

.yt-ai-chart-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    color: #6c5d51;
}

.yt-ai-chart-file-button {
    position: relative;
    overflow: hidden;
}

.yt-ai-chart-file-button input[type="file"] {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.yt-ai-chart-preview-wrap {
    display: grid;
    gap: 10px;
    padding: 14px;
    border: 1px solid #e4d9ce;
    border-radius: 12px;
    background: #fffaf3;
}

#yt-ai-chart-preview {
    width: 100%;
    min-height: 420px;
    border: 0;
    border-radius: 8px;
    background: #fff;
}

.yt-ai-chart-card {
    position: relative;
    margin: 32px 0;
    padding: clamp(18px, 3vw, 30px);
    border: 1px solid rgba(87, 57, 39, 0.14);
    border-radius: 20px;
    background: linear-gradient(145deg, #fffdf9, #fff7ed);
    box-shadow: 0 14px 38px rgba(73, 43, 25, 0.08);
}

.yt-ai-chart-loading {
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 92px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border: 1px solid rgba(87, 57, 39, 0.12);
    border-radius: 999px;
    background: rgba(255, 250, 243, 0.94);
    color: #6d594b;
    box-shadow: 0 8px 24px rgba(73, 43, 25, 0.1);
    transform: translateX(-50%);
    transition: opacity 180ms ease, visibility 180ms ease;
}

.yt-ai-chart-card.is-ready .yt-ai-chart-loading {
    visibility: hidden;
    opacity: 0;
}

.yt-ai-chart-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid #ead7c5;
    border-top-color: #b42318;
    border-radius: 50%;
    animation: yt-ai-chart-spin 700ms linear infinite;
}

@keyframes yt-ai-chart-spin {
    to { transform: rotate(360deg); }
}

.yt-ai-chart-card h3 {
    margin: 0 0 18px;
    color: #2b1a12;
    font-size: clamp(20px, 2.4vw, 28px);
}

.yt-ai-chart-frame {
    display: block;
    width: 100%;
    min-height: 320px;
    border: 0;
    border-radius: 12px;
    background: transparent;
}

.yt-ai-chart-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 22px;
    margin: 14px 0 0;
    color: #79675b;
    font-size: 13px;
}

.yt-ai-chart-notice {
    margin: 8px 0 0;
    color: #9a8779;
    font-size: 12px;
}

@media (max-width: 720px) {
    .yt-ai-chart-grid {
        grid-template-columns: 1fr;
    }

    .yt-ai-chart-card {
        margin: 22px 0;
        border-radius: 15px;
    }
}