:root {
    --blue: #168acb;
    --magenta: #9f1e5b;
    --ink: #24313f;
    --muted: #64748b;
    --bg: #f4f7fa;
    --card: #ffffff;
    --line: #dde5ec;
    --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--ink);
    padding: 20px clamp(12px, 3vw, 40px) 40px;
}

header h1 {
    margin: 0 0 4px;
    font-size: 26px;
    letter-spacing: 0.2px;
}
.blue { color: var(--blue); }
.magenta { color: var(--magenta); }
.badge {
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    background: var(--blue);
    border-radius: 999px;
    padding: 3px 10px;
    vertical-align: middle;
    margin-left: 6px;
}
.tagline { margin: 0 0 18px; color: var(--muted); font-size: 14px; }

.error {
    background: #fdf1f4;
    border: 1px solid #e6b3c4;
    color: #8c1d47;
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 14px;
    font-size: 14px;
}
.error.warn {
    background: #fdf8ec;
    border-color: #e8d29a;
    color: #7a5c11;
}

main {
    display: grid;
    grid-template-columns: 1fr 1.1fr 1fr;
    gap: 16px;
    align-items: start;
}
@media (max-width: 1100px) { main { grid-template-columns: 1fr; } }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 1px 3px rgba(36, 49, 63, 0.06);
    /* Grid items default to a content-based minimum width, which lets a
       sample with long lines steal space from the other columns. Pinning the
       minimum to zero keeps the three columns at their fr proportions
       whatever the text contains. */
    min-width: 0;
}
#input-card.dragging { outline: 2px dashed var(--blue); outline-offset: -6px; }

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.card-head h2, .card-head h3 { margin: 0; font-size: 15px; }
.card-head h3 { font-size: 13px; color: var(--muted); }
.card-tools { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.card-tools select {
    font: inherit;
    font-size: 12.5px;
    padding: 4px 6px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: #fff;
    color: var(--ink);
    max-width: 170px;
}
.card-tools select:disabled { opacity: 0.45; }

button {
    font: inherit;
    font-size: 13px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
    border-radius: 7px;
    padding: 5px 11px;
    cursor: pointer;
}
button:hover { border-color: var(--blue); color: var(--blue); }
button:disabled { opacity: 0.35; cursor: default; }

textarea, #output-text, #input-invis {
    width: 100%;
    min-height: 340px;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.5;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px;
    background: #fbfdfe;
    color: var(--ink);
    resize: vertical;
    white-space: pre;
    overflow: auto;
    margin: 0;
}
#json-text { min-height: 170px; }
#output-text { min-height: 340px; max-height: 500px; }

.invis { color: #a9bfd2; }
.sample-hint {
    margin: 0 0 12px;
    padding: 8px 10px;
    font-size: 12.5px;
    color: var(--muted);
    background: #f2f7fb;
    border-radius: 7px;
}
button.active { border-color: var(--blue); color: var(--blue); }

.stats { margin-top: 8px; font-size: 12px; color: var(--muted); }
.reports { margin: 8px 0 0; padding-left: 18px; font-size: 12.5px; color: var(--muted); }
.reports li { margin-bottom: 2px; }

.action-card {
    border: 1px solid var(--line);
    border-left: 3px solid var(--blue);
    border-radius: 9px;
    padding: 10px 12px 6px;
    margin-bottom: 10px;
    background: #fdfefe;
    position: relative;
}
.action-card.paid { border-left-color: var(--magenta); }
.action-card.none { border-left-color: var(--line); background: #fafbfc; }
.action-card.none .action-select { color: var(--muted); }
.action-head { display: flex; align-items: center; gap: 8px; }
.action-number {
    font-size: 12px;
    font-weight: 700;
    color: #fff;
    background: var(--ink);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: none;
}
.action-select { flex: 1; font: inherit; font-size: 13.5px; padding: 5px 6px; border: 1px solid var(--line); border-radius: 7px; background: #fff; }
.action-tools { display: flex; gap: 4px; }
.tool { padding: 3px 8px; font-size: 12px; }

.action-desc {
    margin: 8px 0 2px 28px;
    padding: 8px 10px;
    font-size: 12.5px;
    color: var(--muted);
    background: #f2f7fb;
    border-radius: 7px;
}
.tool.info.active { border-color: var(--blue); color: var(--blue); }

.action-params { margin: 10px 0 4px 28px; display: flex; flex-direction: column; gap: 7px; }
.param { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.param.param-multi { align-items: flex-start; }
.param-label { min-width: 140px; color: var(--muted); }
.param .param-textarea {
    font: inherit;
    font-family: var(--mono);
    font-size: 12.5px;
    flex: 1;
    padding: 6px 8px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
    resize: vertical;
    min-height: 0;
}
.param input[type="text"], .param input[type="number"], .param select {
    font: inherit;
    font-size: 13px;
    flex: 1;
    padding: 4px 8px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: #fff;
}
.param input[type="text"] { font-family: var(--mono); }
.param-check { margin-left: 0; }

.action-tier {
    position: absolute;
    top: 8px;
    right: 12px;
    display: none;
}
.action-card.paid .action-tier {
    display: block;
    position: static;
    margin: 2px 0 4px 28px;
    font-size: 11px;
    font-weight: 600;
    color: var(--magenta);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.add-action {
    width: 100%;
    border-style: dashed;
    color: var(--muted);
    padding: 8px;
    margin-bottom: 12px;
}
.add-action:hover { color: var(--blue); }

.json-block { border-top: 1px solid var(--line); padding-top: 12px; }

footer {
    margin-top: 22px;
    font-size: 12.5px;
    color: var(--muted);
    text-align: center;
}
footer a { color: var(--blue); text-decoration: none; }