/* Regex Tester — Tools Joyboy */

.regex-workspace {
    display: grid;
    grid-template-columns: 1fr 260px;
    gap: 1.5rem;
    align-items: start;
}

.regex-input-row {
    display: flex;
    align-items: center;
    gap: .4rem;
    background: var(--color-bg-card, #fff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: 6px;
    padding: .3rem .6rem;
}

.regex-delimiter {
    font-family: var(--font-mono, monospace);
    font-size: 1.2rem;
    color: var(--color-primary, #2563eb);
    font-weight: 700;
    line-height: 1;
    user-select: none;
}

.regex-pattern-input {
    flex: 1;
    border: none !important;
    box-shadow: none !important;
    background: transparent;
    font-family: var(--font-mono, monospace);
    font-size: .95rem;
    padding: .35rem .4rem;
}

.regex-flags {
    display: flex;
    gap: .3rem;
}

.flag-btn {
    display: flex;
    align-items: center;
    gap: .2rem;
    padding: .2rem .5rem;
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-mono, monospace);
    font-size: .85rem;
    transition: background .15s;
    user-select: none;
}

.flag-btn:has(input:checked) {
    background: var(--color-primary, #2563eb);
    color: #fff;
    border-color: var(--color-primary, #2563eb);
}

.flag-btn input { display: none; }

.regex-error {
    color: #dc2626;
    font-size: .85rem;
    margin-top: .4rem;
    padding: .4rem .75rem;
    background: #fef2f2;
    border-radius: 4px;
    border-left: 3px solid #dc2626;
}

/* Text wrapper with overlay highlight */
.regex-text-wrapper {
    position: relative;
}

.regex-highlight-layer,
.regex-text-input {
    font-family: var(--font-mono, monospace);
    font-size: .9rem;
    line-height: 1.6;
    padding: .75rem;
    white-space: pre-wrap;
    word-break: break-word;
    min-height: 160px;
    border-radius: 6px;
    width: 100%;
    box-sizing: border-box;
}

.regex-highlight-layer {
    position: absolute;
    top: 0; left: 0;
    pointer-events: none;
    border: 1px solid transparent;
    color: transparent;
    overflow: hidden;
    z-index: 1;
}

.regex-highlight-layer mark {
    border-radius: 2px;
    color: transparent;
}

.regex-text-input {
    position: relative;
    z-index: 2;
    background: transparent;
    border: 1px solid var(--color-border, #e2e8f0);
    resize: vertical;
    color: var(--color-text, #1e293b);
    caret-color: var(--color-text, #1e293b);
}

.regex-stats {
    display: flex;
    gap: 1rem;
    padding: .5rem .75rem;
    background: var(--color-bg-subtle, #f8fafc);
    border-radius: 6px;
    font-size: .85rem;
    margin-top: .5rem;
}

.regex-match { color: #16a34a; font-weight: 600; }
.regex-no-match { color: #dc2626; font-weight: 600; }

.regex-groups-section {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--color-bg-card, #fff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: 6px;
}

.regex-groups-section h3 { font-size: .9rem; font-weight: 600; margin-bottom: .75rem; }

.regex-group-row {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    padding: .4rem 0;
    border-bottom: 1px solid var(--color-border, #e2e8f0);
    font-size: .85rem;
    align-items: center;
}

.regex-group-match { font-weight: 500; }
.regex-group-cap em { color: var(--color-primary, #2563eb); font-style: normal; }
.regex-group-more { font-size: .8rem; color: var(--color-text-muted, #64748b); margin-top: .5rem; }

.regex-replace-section { margin-top: 1rem; }

.regex-replace-result {
    margin-top: .75rem;
    padding: .75rem;
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 6px;
    font-family: var(--font-mono, monospace);
    font-size: .9rem;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 200px;
    overflow-y: auto;
}

/* Cheatsheet */
.regex-cheatsheet {
    padding: 1rem;
    background: var(--color-bg-card, #fff);
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: 8px;
    font-size: .82rem;
    position: sticky;
    top: 80px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.regex-cheatsheet h3 {
    font-size: .9rem;
    font-weight: 700;
    margin-bottom: .75rem;
    color: var(--color-primary, #2563eb);
}

.cheatsheet-group { margin-bottom: 1rem; }
.cheatsheet-group h4 { font-size: .8rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--color-text-muted, #64748b); margin-bottom: .4rem; }

.cheatsheet-group dl { display: grid; grid-template-columns: auto 1fr; gap: .2rem .75rem; align-items: baseline; }
.cheatsheet-group dt code { background: var(--color-bg-subtle, #f8fafc); padding: .1rem .3rem; border-radius: 3px; font-size: .8rem; }
.cheatsheet-group dd { color: var(--color-text-muted, #64748b); margin: 0; }

.cheatsheet-examples { display: flex; flex-wrap: wrap; gap: .35rem; }
.cheatsheet-ex {
    padding: .25rem .6rem;
    font-size: .78rem;
    border: 1px solid var(--color-border, #e2e8f0);
    border-radius: 4px;
    background: var(--color-bg-subtle, #f8fafc);
    cursor: pointer;
    transition: background .15s;
}
.cheatsheet-ex:hover { background: var(--color-primary, #2563eb); color: #fff; border-color: var(--color-primary, #2563eb); }

.tool-faq { margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--color-border); }
.tool-faq h2 { font-size: 1.25rem; font-weight: 700; color: var(--color-text); margin-bottom: 1.25rem; }
.faq-item { margin-bottom: 1.25rem; padding: 1rem 1.25rem; background: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.faq-item h3 { font-size: 1rem; font-weight: 600; color: var(--color-text); margin: 0 0 0.5rem; }
.faq-item p { color: var(--color-text-muted); font-size: 0.9375rem; line-height: 1.7; margin: 0; }

.local-badge { font-size: .8rem; color: var(--color-text-muted, #64748b); }

@media (max-width: 900px) {
    .regex-workspace { grid-template-columns: 1fr; }
    .regex-cheatsheet { position: static; max-height: none; }
}