/* Regex Tester Tool Specific Styles */

.tool-interface {
    padding: var(--spacing-2xl) 0;
}

/* ── Pattern bar ── */
.pattern-bar {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--color-background-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 10px var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    transition: border-color var(--transition-normal);
}

.pattern-bar:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.regex-delim {
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 1.25rem;
    color: var(--color-primary);
    user-select: none;
    padding: 0 2px;
}

.regex-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 1rem;
    color: var(--color-text);
    padding: 0 var(--spacing-sm);
    min-width: 0;
}

.regex-input::placeholder {
    color: var(--color-text-light);
    opacity: 0.5;
}

.flags-group {
    display: flex;
    gap: 2px;
    margin-left: var(--spacing-sm);
}

.flag-btn {
    min-width: 44px;
    min-height: 44px;
    padding: 0 8px;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: transparent;
    color: var(--color-text-light);
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.flag-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.flag-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.flag-btn.flag-locked {
    background: rgba(37, 99, 235, 0.15);
    border-color: var(--color-primary);
    color: var(--color-primary);
    cursor: default;
    opacity: 0.8;
}

.match-badge {
    margin-left: auto;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 999px;
    white-space: nowrap;
    min-width: 60px;
    text-align: center;
}

.match-badge.has-matches {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.match-badge.no-matches {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
}

/* ── Error line ── */
.regex-error {
    color: #ef4444;
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

/* ── Split editor ── */
.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.editor-wrapper {
    position: relative;
}

.editor-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.json-editor {
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-lg);
    font-family: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.6;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text);
    resize: vertical;
    tab-size: 4;
}

.json-editor:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.editor-help {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
}

/* ── Highlight pane ── */
.regex-highlight {
    min-height: 300px;
    padding: var(--spacing-lg);
    font-family: 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.6;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text);
    overflow-wrap: break-word;
    white-space: pre-wrap;
    overflow-y: auto;
}

.regex-highlight mark.match-a {
    background: rgba(59, 130, 246, 0.3);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

.regex-highlight mark.match-b {
    background: rgba(139, 92, 246, 0.3);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

.regex-highlight mark.match-c {
    background: rgba(16, 185, 129, 0.3);
    color: inherit;
    border-radius: 2px;
    padding: 0 1px;
}

/* ── Match section ── */
.match-section {
    background: var(--color-background-alt);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.match-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.match-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.match-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-background);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.match-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

.match-item.color-a .match-num { background: rgba(59, 130, 246, 0.2); color: #3b82f6; }
.match-item.color-b .match-num { background: rgba(139, 92, 246, 0.2); color: #8b5cf6; }
.match-item.color-c .match-num { background: rgba(16, 185, 129, 0.2); color: #10b981; }

.match-body {
    flex: 1;
    min-width: 0;
}

.match-value {
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    font-size: 14px;
    color: var(--color-text);
    word-break: break-all;
}

.match-meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: 2px;
}

.match-groups {
    margin-top: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.match-group {
    font-size: 13px;
    font-family: 'JetBrains Mono', 'Consolas', monospace;
    color: var(--color-text-light);
}

.match-group-name {
    font-weight: 600;
    color: var(--color-primary);
    margin-right: 4px;
}

.match-empty {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.truncation-note {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    padding: var(--spacing-sm);
    font-style: italic;
}

/* ── Info grid (shared pattern) ── */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.info-card {
    background: var(--color-background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.info-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.info-card ul {
    list-style: disc;
    padding-left: var(--spacing-xl);
}

.info-card li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

/* ── Related tools grid ── */
.related-tools {
    padding: var(--spacing-2xl) 0;
}

.related-tools .tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

/* ── Accessibility ── */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .editor-container {
        grid-template-columns: 1fr;
    }

    .json-editor,
    .regex-highlight {
        min-height: 200px;
    }

    .pattern-bar {
        flex-wrap: wrap;
    }
}