/* ── Utils 공통 레이아웃 (style.css 변수 기반) ───────── */

header { position: static; }

main.tool-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}

.tool-crumb {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.tool-crumb a { color: var(--primary-lt); text-decoration: none; }
.tool-crumb a:hover { text-decoration: underline; }

.tool-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.tool-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2.2rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem;
  margin-bottom: 1.2rem;
}

.panel label {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary-lt);
  margin-bottom: 0.6rem;
}

.tool-input,
.tool-output {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: 'SF Mono', 'Consolas', monospace;
  font-size: 0.88rem;
  padding: 0.8rem;
  resize: vertical;
}

.tool-input:focus, .tool-output:focus { outline: 1px solid var(--primary); }

textarea.tool-input, textarea.tool-output { min-height: 140px; line-height: 1.5; }

.field-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.field-row .panel { flex: 1 1 200px; margin-bottom: 0; }

.btn-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

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

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

.btn.secondary:hover { color: var(--text); border-color: var(--primary-lt); }

.error-msg {
  font-size: 0.82rem;
  color: #f77c7c;
  margin-top: 0.6rem;
  display: none;
}

.error-msg.show { display: block; }

table.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

table.result-table th {
  background: var(--bg);
  color: var(--primary-lt);
  font-weight: 600;
  text-align: left;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
}

table.result-table td {
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'SF Mono', 'Consolas', monospace;
}

/* ── Utils 목록(index) 전용 ───────────────────────── */

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 3rem;
}

.tool-card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.3rem;
  text-decoration: none;
  transition: border-color 0.2s, transform 0.15s;
}

.tool-card:hover { border-color: var(--primary-lt); transform: translateY(-2px); }

.tool-card .icon { font-size: 1.4rem; margin-bottom: 0.6rem; }

.tool-card .name {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.tool-card .desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.planned-list {
  list-style: none;
}

.planned-list li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.planned-list li .name { color: var(--text); font-weight: 600; }

.planned-list li:last-child { border-bottom: none; }

@media (max-width: 600px) {
  main.tool-main { padding: 3rem 1.2rem 4rem; }
}