/* Code Quality Score Calculator - mobile-first */

:root {
    --cqsc-text: #111827;
    --cqsc-text-muted: var(--text-muted, #6b7280);
    --cqsc-border: #e5e7eb;
    --cqsc-surface: #f8fafc;
    --cqsc-bg: #ffffff;
    --cqsc-radius: 14px;
    --cqsc-radius-sm: 10px;
    --cqsc-success: #059669;
    --cqsc-warning: #d97706;
    --cqsc-danger: #dc2626;
    --cqsc-accent: #0ea5e9;
    --cqsc-accent-hover: #0284c7;
    --cqsc-focus-ring: rgba(14, 165, 233, 0.2);
}

/* --- Tool panel --- */
.cqsc-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.cqsc-input-zone {
    background: var(--cqsc-bg);
    border: 1px solid var(--cqsc-border);
    border-radius: var(--cqsc-radius);
    padding: 1.25rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

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

.cqsc-select {
    width: 100%;
    max-width: 200px;
    padding: 0.625rem 2rem 0.625rem 0.75rem;
    font-size: 0.9375rem;
    color: var(--cqsc-text);
    background: var(--cqsc-surface);
    border: 1px solid var(--cqsc-border);
    border-radius: var(--cqsc-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'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cqsc-select:hover {
    border-color: var(--cqsc-accent);
}

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

.cqsc-textarea {
    width: 100%;
    min-height: 200px;
    margin-top: 0.75rem;
    padding: 1rem;
    
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--cqsc-text);
    background: var(--cqsc-surface);
    border: 1px solid var(--cqsc-border);
    border-radius: var(--cqsc-radius-sm);
    resize: vertical;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

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

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

.cqsc-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.cqsc-btn {
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--cqsc-radius-sm);
    border: none;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.cqsc-btn:active {
    transform: scale(0.98);
}

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

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

.cqsc-btn-primary:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--cqsc-focus-ring);
}

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

.cqsc-btn-secondary:hover {
    background: var(--cqsc-surface);
    border-color: var(--cqsc-accent);
}

.cqsc-btn-secondary:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--cqsc-focus-ring);
}

/* Results zone */
.cqsc-results-zone {
    background: var(--cqsc-bg);
    border: 1px solid var(--cqsc-border);
    border-radius: var(--cqsc-radius);
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.cqsc-results-zone[hidden] {
    display: none;
}

.cqsc-score-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.cqsc-score-value {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
    font-weight: 700;
    line-height: 1;
    transition: color 0.3s ease;
}

.cqsc-score-value.cqsc-grade-high {
    color: var(--cqsc-success);
}

.cqsc-score-value.cqsc-grade-mid {
    color: var(--cqsc-warning);
}

.cqsc-score-value.cqsc-grade-low {
    color: var(--cqsc-danger);
}

.cqsc-score-label {
    font-size: 0.875rem;
    color: var(--cqsc-text-muted);
}

.cqsc-score-bar-wrap {
    height: 10px;
    background: var(--cqsc-surface);
    border-radius: 999px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.cqsc-score-bar {
    height: 100%;
    border-radius: 999px;
    transition: width 0.5s ease, background-color 0.3s ease;
}

.cqsc-score-bar.cqsc-grade-high {
    background: var(--cqsc-success);
}

.cqsc-score-bar.cqsc-grade-mid {
    background: var(--cqsc-warning);
}

.cqsc-score-bar.cqsc-grade-low {
    background: var(--cqsc-danger);
}

.cqsc-metrics-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--cqsc-text);
    margin: 0 0 0.75rem 0;
}

.cqsc-metrics-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.cqsc-metric {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 0.75rem;
}

.cqsc-metric-name {
    font-size: 0.875rem;
    color: var(--cqsc-text);
    text-transform: capitalize;
}

.cqsc-metric-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cqsc-metric-bar-wrap {
    width: 80px;
    height: 6px;
    background: var(--cqsc-surface);
    border-radius: 999px;
    overflow: hidden;
    flex-shrink: 0;
}

.cqsc-metric-bar {
    height: 100%;
    border-radius: 999px;
    transition: width 0.4s ease;
}

.cqsc-metric-bar.cqsc-grade-high {
    background: var(--cqsc-success);
}

.cqsc-metric-bar.cqsc-grade-mid {
    background: var(--cqsc-warning);
}

.cqsc-metric-bar.cqsc-grade-low {
    background: var(--cqsc-danger);
}

.cqsc-metric-value {
    font-size: 0.8125rem;
    font-weight: 600;
    min-width: 2rem;
    text-align: right;
}

/* Empty state */
.cqsc-empty-state {
    padding: 1.25rem;
    background: var(--cqsc-surface);
    border: 1px dashed var(--cqsc-border);
    border-radius: var(--cqsc-radius-sm);
    text-align: center;
}

.cqsc-empty-state p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--cqsc-text-muted);
}

.cqsc-empty-state[hidden] {
    display: none;
}

/* Loading state */
.cqsc-btn-primary.is-loading .cqsc-btn-text {
    visibility: hidden;
}

.cqsc-btn-primary.is-loading {
    position: relative;
    pointer-events: none;
}

.cqsc-btn-primary.is-loading::after {
    content: "";
    position: absolute;
    width: 1rem;
    height: 1rem;
    top: 50%;
    left: 50%;
    margin: -0.5rem 0 0 -0.5rem;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: cqsc-spin 0.7s linear infinite;
}

@keyframes cqsc-spin {
    to {
        transform: rotate(360deg);
    }
}

/* Tablet and up: slightly wider textarea min-height */
@media (min-width: 768px) {
    .cqsc-input-zone {
        padding: 1.5rem;
    }

    .cqsc-textarea {
        min-height: 260px;
    }

    .cqsc-results-zone {
        padding: 1.75rem;
    }

    .cqsc-metric-bar-wrap {
        width: 100px;
    }
}