/* Code Best Practices Checker - mobile-first, unique layout */

:root {
    --cbpc-text: #0f172a;
    --cbpc-text-muted: var(--text-muted, #64748b);
    --cbpc-border: #e2e8f0;
    --cbpc-surface: #f1f5f9;
    --cbpc-bg: #ffffff;
    --cbpc-radius: 12px;
    --cbpc-radius-sm: 8px;
    --cbpc-success: #0d9488;
    --cbpc-success-bg: #ccfbf1;
    --cbpc-warning: #b45309;
    --cbpc-warning-bg: #fef3c7;
    --cbpc-danger: #b91c1c;
    --cbpc-danger-bg: #fee2e2;
    --cbpc-accent: #0f766e;
    --cbpc-accent-hover: #0d5c56;
    --cbpc-focus-ring: rgba(15, 118, 110, 0.25);
    --cbpc-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --cbpc-shadow-lg: 0 4px 14px rgba(0, 0, 0, 0.08);
}
/* --- Tool section --- */
.cbpc-tool {
    margin-bottom: 2rem;
}

.cbpc-layout {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

@media (min-width: 992px) {
    .cbpc-layout {
        flex-direction: row;
        align-items: stretch;
        gap: 1.75rem;
    }

    .cbpc-input-panel {
        flex: 1;
        min-width: 0;
    }

    .cbpc-report-panel {
        flex: 1;
        min-width: 0;
        display: flex;
        flex-direction: column;
    }
}

/* Input panel */
.cbpc-input-panel {
    background: var(--cbpc-bg);
    border: 1px solid var(--cbpc-border);
    border-radius: var(--cbpc-radius);
    box-shadow: var(--cbpc-shadow);
    overflow: hidden;
}

.cbpc-input-header {
    padding: 1rem 1.25rem;
    background: var(--cbpc-surface);
    border-bottom: 1px solid var(--cbpc-border);
}

.cbpc-input-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--cbpc-text);
    margin: 0;
}

.cbpc-input-body {
    padding: 1.25rem;
}

.cbpc-field {
    margin-bottom: 1.25rem;
}

.cbpc-field:last-of-type {
    margin-bottom: 0;
}

.cbpc-label {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--cbpc-text);
    margin-bottom: 0.5rem;
}

.cbpc-select {
    width: 100%;
    max-width: 220px;
    padding: 0.625rem 2.25rem 0.625rem 0.75rem;
    font-size: 0.9375rem;
    color: var(--cbpc-text);
    background: var(--cbpc-bg);
    border: 1px solid var(--cbpc-border);
    border-radius: var(--cbpc-radius-sm);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    cursor: pointer;
}

.cbpc-select:hover,
.cbpc-select:focus {
    border-color: var(--cbpc-accent);
    outline: none;
}

.cbpc-select:focus {
    box-shadow: 0 0 0 3px var(--cbpc-focus-ring);
}

.cbpc-textarea {
    width: 100%;
    min-height: 280px;
    padding: 1rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--cbpc-text);
    background: var(--cbpc-surface);
    border: 1px solid var(--cbpc-border);
    border-radius: var(--cbpc-radius-sm);
    resize: vertical;
}

.cbpc-textarea::placeholder {
    color: var(--cbpc-text-muted);
}

.cbpc-textarea:hover {
    border-color: #cbd5e1;
}

.cbpc-textarea:focus {
    border-color: var(--cbpc-accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--cbpc-focus-ring);
}

.cbpc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--cbpc-border);
}

.cbpc-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.125rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--cbpc-radius-sm);
    border: none;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.cbpc-btn:focus {
    outline: none;
}

.cbpc-btn:focus-visible {
    box-shadow: 0 0 0 3px var(--cbpc-focus-ring);
}

.cbpc-btn-primary {
    background: var(--cbpc-accent);
    color: #fff;
}

.cbpc-btn-primary:hover {
    background: var(--cbpc-accent-hover);
}

.cbpc-btn-secondary {
    background: transparent;
    color: var(--cbpc-text-muted);
    border: 1px solid var(--cbpc-border);
}

.cbpc-btn-secondary:hover {
    background: var(--cbpc-surface);
    color: var(--cbpc-text);
}

/* Report panel */
.cbpc-report-panel {
    background: var(--cbpc-bg);
    border: 1px solid var(--cbpc-border);
    border-radius: var(--cbpc-radius);
    box-shadow: var(--cbpc-shadow);
    overflow: hidden;
}

.cbpc-report-header {
    padding: 1rem 1.25rem;
    background: var(--cbpc-surface);
    border-bottom: 1px solid var(--cbpc-border);
}

.cbpc-report-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--cbpc-text);
    margin: 0;
}

.cbpc-report-body {
    padding: 1.25rem;
    min-height: 200px;
}

.cbpc-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem 1rem;
}

.cbpc-empty-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--cbpc-surface);
    border-radius: 50%;
    margin-bottom: 1rem;
}

.cbpc-empty-icon i {
    font-size: 1.5rem;
    color: var(--cbpc-text-muted);
}

.cbpc-empty-text {
    font-size: 0.9375rem;
    color: var(--cbpc-text-muted);
    margin: 0;
    max-width: 260px;
}

/* Report list */
.cbpc-report-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cbpc-report-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: var(--cbpc-radius-sm);
    border-left: 4px solid transparent;
}

.cbpc-report-item--good {
    background: var(--cbpc-success-bg);
    border-left-color: var(--cbpc-success);
}

.cbpc-report-item--warning {
    background: var(--cbpc-warning-bg);
    border-left-color: var(--cbpc-warning);
}

.cbpc-report-item--bad {
    background: var(--cbpc-danger-bg);
    border-left-color: var(--cbpc-danger);
}

.cbpc-report-item-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.75rem;
}

.cbpc-report-item--good .cbpc-report-item-icon {
    background: var(--cbpc-success);
    color: #fff;
}

.cbpc-report-item--warning .cbpc-report-item-icon {
    background: var(--cbpc-warning);
    color: #fff;
}

.cbpc-report-item--bad .cbpc-report-item-icon {
    background: var(--cbpc-danger);
    color: #fff;
}

.cbpc-report-item-content {
    flex: 1;
    min-width: 0;
}

.cbpc-report-item-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--cbpc-text);
    margin: 0 0 0.25rem 0;
}

.cbpc-report-item-message {
    font-size: 0.875rem;
    color: var(--cbpc-text-muted);
    margin: 0;
    line-height: 1.4;
}

/* Loading state */
.cbpc-report-body.is-loading .cbpc-empty-state {
    opacity: 0.6;
}

.cbpc-loading-dots {
    display: inline-flex;
    gap: 4px;
    margin-top: 0.5rem;
}

.cbpc-loading-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cbpc-accent);
    animation: cbpc-bounce 0.6s ease-in-out infinite alternate;
}

.cbpc-loading-dots span:nth-child(2) {
    animation-delay: 0.15s;
}

.cbpc-loading-dots span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes cbpc-bounce {
    from {
        transform: translateY(0);
        opacity: 0.6;
    }
    to {
        transform: translateY(-4px);
        opacity: 1;
    }
}