/* 정규식 테스터 */
:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --ink: #1e293b;
  --muted: #64748b;
  --line: #e2e8f0;
  --violet: #7c3aed;
  --violet2: #6d28d9;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,.07);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: 'Pretendard', 'Apple SD Gothic Neo', sans-serif; font-size: 14px; }

.wrap { max-width: 100%; padding: 0 0 60px; }

/* ── 헤더 ── */
.top { padding: 20px 0 16px; }
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  width: 48px; height: 48px; flex-shrink: 0;
  background: linear-gradient(135deg, #7c3aed, #0891b2);
  border-radius: 13px; display: flex; align-items: center; justify-content: center; font-size: 22px;
}
h1 { font-size: 22px; font-weight: 700; }
.sub { font-size: 13px; color: var(--muted); margin-top: 2px; }

/* ── 카드 ── */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); margin-bottom: 12px;
}
.card-title { font-size: 15px; font-weight: 700; margin-bottom: 14px; }

/* ── 정규식 입력 ── */
.regex-input-row {
  display: flex; gap: 0; border: 2px solid var(--line); border-radius: 10px;
  overflow: hidden; transition: border-color .12s;
}
.regex-input-row:focus-within { border-color: var(--violet); }
.regex-slash {
  padding: 10px 12px; background: #f1f5f9; color: var(--muted); font-size: 20px;
  font-family: monospace; border-right: 1px solid var(--line); flex-shrink: 0;
  display: flex; align-items: center;
}
#regexInput {
  flex: 1; padding: 10px 12px; border: none; outline: none;
  font-family: 'JetBrains Mono', monospace; font-size: 16px; color: var(--violet); font-weight: 600;
  background: var(--card);
}
.flags-row { display: flex; gap: 4px; border-left: 1px solid var(--line); padding: 6px 10px; align-items: center; background: var(--card); flex-shrink: 0; }
.flag-btn {
  padding: 3px 8px; border-radius: 5px; border: 1.5px solid var(--line);
  background: transparent; cursor: pointer; font-size: 12px; font-weight: 700;
  font-family: monospace; color: var(--muted); transition: all .12s;
}
.flag-btn.active { background: var(--violet); border-color: var(--violet); color: #fff; }

/* ── 상태 배지 ── */
.status-badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: 600; margin-top: 8px;
}
.status-badge.ok    { background: #f0fdf4; color: #16a34a; }
.status-badge.err   { background: #fef2f2; color: #dc2626; }
.status-badge.idle  { background: #f1f5f9; color: var(--muted); }

/* ── 테스트 텍스트 영역 ── */
.test-container { position: relative; }
.highlight-layer {
  position: absolute; inset: 0; padding: 12px 14px; pointer-events: none;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; line-height: 1.7;
  border-radius: 9px; white-space: pre-wrap; word-break: break-all;
  color: transparent; overflow: hidden;
}
.highlight-layer mark {
  background: rgba(124,58,237,.25); border-radius: 3px; color: transparent;
  outline: 2px solid rgba(124,58,237,.5);
}
.highlight-layer mark.first { background: rgba(124,58,237,.45); }
textarea#testInput {
  width: 100%; min-height: 160px; padding: 12px 14px;
  border: 1.5px solid var(--line); border-radius: 9px;
  font-family: 'JetBrains Mono', monospace; font-size: 13px; line-height: 1.7;
  resize: vertical; outline: none; transition: border-color .12s;
  background: transparent; position: relative; z-index: 1; color: var(--ink);
  caret-color: var(--ink);
}
textarea#testInput:focus { border-color: var(--violet); }

/* ── 매치 결과 ── */
.match-header { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; flex-wrap: wrap; }
.match-badge { padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: 700; background: #ede9fe; color: var(--violet); }
.match-list { display: flex; flex-direction: column; gap: 6px; max-height: 240px; overflow-y: auto; }
.match-item {
  background: #f8fafc; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 12px; font-size: 12px;
}
.match-item .mi-head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.match-item .mi-idx { font-weight: 700; color: var(--violet); }
.match-item .mi-val { font-family: monospace; background: var(--violet); color: #fff; padding: 1px 6px; border-radius: 4px; font-size: 12px; }
.match-item .mi-pos { color: var(--muted); font-size: 11px; }
.match-item .mi-groups { margin-top: 6px; display: flex; flex-wrap: wrap; gap: 4px; }
.match-item .mi-group { padding: 2px 7px; background: #ede9fe; color: var(--violet); border-radius: 4px; font-family: monospace; font-size: 11px; }
.no-match { color: var(--muted); font-size: 13px; padding: 10px 0; }

/* ── 패턴 라이브러리 ── */
.pattern-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; }
.pattern-item {
  background: #faf5ff; border: 1px solid #e9d5ff; border-radius: 8px;
  padding: 10px 12px; cursor: pointer; transition: all .12s;
}
.pattern-item:hover { border-color: var(--violet); background: #ede9fe; }
.pattern-item .pi-name { font-size: 12px; font-weight: 700; color: var(--ink); margin-bottom: 3px; }
.pattern-item .pi-regex { font-family: monospace; font-size: 11px; color: var(--violet); }

/* ── 사용 안내 ── */
.guide-section {
  margin-top: 24px; background: rgba(246,248,255,.6);
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
}
.guide-section h2 { font-size: 15px; font-weight: 800; margin: 0 0 10px; color: var(--ink); }
.guide-section h2:not(:first-child) { margin-top: 18px; }
.guide-steps, .guide-features, .guide-usecase {
  margin: 0; padding-left: 18px; color: var(--muted); font-size: 13px; line-height: 1.8;
}
.guide-steps li, .guide-features li, .guide-usecase li { margin-bottom: 4px; }
.guide-steps strong, .guide-features strong { color: var(--ink); }
.guide-privacy {
  margin-top: 16px; background: #eff6ff; border: 1px solid rgba(37,99,235,.22);
  border-radius: 12px; padding: 12px 14px; font-size: 12px; color: #1e40af; line-height: 1.55;
}