.rxt-card { padding: 20px 24px; display: flex; flex-direction: column; gap: 14px; }

/* Pattern row */
.rxt-pattern-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.rxt-pattern-wrap {
    display: flex; align-items: center; flex: 1; min-width: 260px;
    background: var(--surface); border: 1.5px solid var(--border);
    border-radius: 10px; overflow: hidden; transition: border-color .2s;
}
.rxt-pattern-wrap:focus-within { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(99,102,241,.1); }
.rxt-delim { padding: 0 10px; font-size: 1.1rem; font-weight: 700; color: var(--brand); font-family: monospace; user-select: none; }
.rxt-pattern-input {
    flex: 1; border: none; outline: none; background: transparent;
    font-family: 'SFMono-Regular', Consolas, monospace; font-size: .9rem;
    color: var(--txt); padding: 10px 0;
}
.rxt-flags-input {
    width: 52px; border: none; border-left: 1.5px solid var(--border);
    outline: none; background: var(--page-bg); text-align: center;
    font-family: 'SFMono-Regular', Consolas, monospace; font-size: .85rem;
    color: var(--brand); padding: 10px 6px; font-weight: 700;
}
.rxt-match-badge {
    font-size: .78rem; font-weight: 700; color: #15803d;
    background: #dcfce7; border: 1px solid #86efac;
    border-radius: 99px; padding: 4px 12px; white-space: nowrap;
    display: none;
}
.rxt-match-badge.rxt-visible { display: block; }
.rxt-match-badge.rxt-no-match { background: #fff1f2; border-color: #fca5a5; color: #b91c1c; }

/* Error */
.rxt-error {
    display: none; padding: 8px 14px; border-radius: 8px;
    background: #fff1f2; border: 1px solid #fca5a5; color: #b91c1c;
    font-size: .8rem; font-family: monospace;
}

/* Panels */
.rxt-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 700px) { .rxt-panels { grid-template-columns: 1fr; } }

.rxt-panel { display: flex; flex-direction: column; gap: 6px; }
.rxt-panel-label {
    font-size: .78rem; font-weight: 700; color: var(--txt-2);
    display: flex; align-items: center; gap: 6px;
}
.rxt-panel-label i { color: var(--brand); }
.rxt-count-chip {
    background: rgba(99,102,241,.12); color: #6366f1;
    border-radius: 99px; padding: 1px 8px; font-size: .7rem; font-weight: 800;
}

/* Editor with highlight overlay */
.rxt-editor-wrap { position: relative; height: 160px; }
.rxt-highlight, .rxt-textarea {
    position: absolute; inset: 0;
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: .82rem; line-height: 1.6;
    padding: 10px 12px; border-radius: 10px;
    white-space: pre-wrap; word-break: break-all;
    overflow-y: auto;
}
.rxt-textarea {
    border: 1.5px solid var(--border); background: transparent;
    color: var(--txt); resize: none; outline: none; z-index: 2;
    caret-color: var(--txt);
    transition: border-color .2s;
}
.rxt-textarea:focus { border-color: var(--brand); }
.rxt-highlight {
    border: 1.5px solid transparent; background: var(--surface);
    color: transparent; z-index: 1; pointer-events: none; user-select: none;
}
mark.rxt-mark {
    background: rgba(251,191,36,.45); color: transparent;
    border-radius: 2px; outline: 1.5px solid rgba(251,191,36,.7);
}
[data-theme="dark"] mark.rxt-mark { background: rgba(251,191,36,.3); outline-color: rgba(251,191,36,.5); }

/* Details panel */
.rxt-details {
    height: 160px; overflow-y: auto;
    border: 1.5px solid var(--border); border-radius: 10px;
    background: var(--surface); padding: 8px;
    display: flex; flex-direction: column; gap: 4px;
}
.rxt-empty { color: var(--txt-3); font-size: .78rem; padding: 8px 4px; }
.rxt-match-item {
    background: var(--page-bg); border: 1px solid var(--border);
    border-radius: 8px; padding: 7px 10px;
    font-family: 'SFMono-Regular', Consolas, monospace; font-size: .78rem;
}
.rxt-match-num { font-size: .68rem; font-weight: 700; color: var(--brand); margin-bottom: 2px; }
.rxt-match-val { color: var(--txt); word-break: break-all; }
.rxt-match-idx { font-size: .67rem; color: var(--txt-3); margin-top: 2px; }
.rxt-group-row { font-size: .72rem; color: var(--txt-2); margin-top: 3px; }
.rxt-group-row code { background: rgba(99,102,241,.1); color: #6366f1; padding: 1px 5px; border-radius: 4px; }

/* Quick reference */
.rxt-ref-toggle {
    display: inline-flex; align-items: center; gap: 7px;
    font-size: .76rem; font-weight: 700; color: var(--txt-3);
    cursor: pointer; user-select: none;
    padding: 4px 0; transition: color .15s;
}
.rxt-ref-toggle:hover { color: var(--brand); }
.rxt-ref-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 6px; margin-top: 8px;
}
.rxt-ref-item {
    display: flex; align-items: center; gap: 8px;
    background: var(--page-bg); border: 1px solid var(--border);
    border-radius: 7px; padding: 5px 10px;
}
.rxt-ref-item code {
    background: rgba(99,102,241,.1); color: #6366f1;
    padding: 1px 6px; border-radius: 4px; font-size: .74rem; font-weight: 700;
    white-space: nowrap;
}
.rxt-ref-item span { font-size: .72rem; color: var(--txt-2); }