.navbar-custom { position: sticky; top: 0; z-index: 100; }
.workspace { display: flex; height: calc(100vh - 52px); overflow: hidden; }
.sidebar { width: 270px; background: var(--card-bg); border-right: 1px solid var(--border); overflow-y: auto; padding: 12px 8px; flex-shrink: 0; }
.sidebar-title { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--text-secondary); margin: 10px 0 4px 4px; }
.sidebar-title:first-child { margin-top: 0; }
.type-item { display: flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 5px; cursor: pointer; font-size: 12px; color: var(--text); transition: all 0.15s; margin-bottom: 1px; }
.type-item:hover { background: #F1F5F9; }
.type-item.active { background: #EEF2FF; color: var(--primary); font-weight: 600; }
.config-panel { width: 320px; background: var(--card-bg); border-right: 1px solid var(--border); padding: 20px 16px; overflow-y: auto; flex-shrink: 0; }
.section-title { font-size: 12px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 14px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.range-wrap { display: flex; align-items: center; gap: 8px; }
.range-wrap input[type=range] { flex: 1; accent-color: var(--primary); }
.range-val { font-size: 11px; color: var(--primary); font-weight: 600; min-width: 18px; }
.switch-wrap { display: flex; align-items: center; justify-content: space-between; }
.btn-generate { width: 100%; padding: 9px; font-size: 13px; font-weight: 600; border-radius: 5px; border: none; background: var(--primary); color: #fff; cursor: pointer; margin-top: 6px; }
.btn-generate:hover { background: var(--primary-dark); }
.preview-area { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px; background: #F1F5F9; overflow: auto; position: relative; }
.preview-box { background: #fff; border-radius: 8px; padding: 24px; box-shadow: 0 4px 16px rgba(0,0,0,0.06); text-align: center; max-width: 700px; width: auto; min-width: 300px; }
.preview-box img { max-width: 100%; height: auto; display: block; margin: 0 auto; }
.preview-placeholder { color: #94A3B8; font-size: 13px; padding: 40px 0; }
.preview-actions { margin-top: 12px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.btn-outline-sm { padding: 5px 12px; font-size: 11px; border-radius: 5px; border: 1px solid var(--border); background: #fff; cursor: pointer; color: var(--text); text-decoration: none; display: inline-block; }
.btn-outline-sm:hover { border-color: var(--primary); color: var(--primary); }
.info-bar { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--border); font-size: 11px; color: var(--text-secondary); }
.help-icon { display: inline-flex; align-items: center; justify-content: center; width: 16px; height: 16px; border-radius: 50%; background: #CBD5E1; color: #fff; font-size: 10px; cursor: pointer; margin-left: 4px; transition: all 0.2s; vertical-align: middle; }
.help-icon:hover { background: var(--primary); }
.popover { max-width: 320px; font-size: 13px; border: 1px solid var(--border); box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.popover-header { font-size: 13px; font-weight: 600; background: #F8FAFC; border-bottom: 1px solid var(--border); }
.popover-body { padding: 12px 16px; }
.popover-body code { font-size: 12px; background: #F1F5F9; padding: 2px 6px; border-radius: 3px; color: var(--primary); margin-top: 4px; display: inline-block; word-break: break-all; }
@media (max-width: 768px) {
    .sidebar { display: none; }
    .config-panel { width: 100%; border-right: none; }
    .workspace { flex-direction: column; }
    .preview-area { padding: 16px; }
    .preview-box { max-width: 100%; padding: 16px; }
}