/**
 * tools-style.css — CryptoPingAi 크립토계산기 공통 스타일 (V1.2)
 *
 * 기존 디자인 토큰(--bg, --accent, --text 등) 그대로 사용 (index.html에서 정의됨)
 * 도구 페이지 7 섹션 셸: hero / calculator / howto / regulation / faq / related / cta
 *
 * 모바일 우선 + 반응형 (768px breakpoint)
 * a11y: ARIA 라벨, 키보드 네비, 4.5:1 명도비
 */

/* ─────────────────────────────────────────
 * 0. 공통 레이아웃
 * ───────────────────────────────────────── */
.tools-page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 18px 80px;
}
.tools-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 16px;
}
.tools-breadcrumb a {
  color: var(--text2);
  text-decoration: none;
}
.tools-breadcrumb a:hover {
  color: var(--accent);
}
.tools-breadcrumb .sep {
  opacity: .5;
}

/* ─────────────────────────────────────────
 * 1. Hero 섹션 (h1 + 부제목 + 신뢰 표시 + 갱신일)
 * ───────────────────────────────────────── */
.tools-hero {
  background: linear-gradient(135deg, var(--accent-dim), rgba(34, 197, 94, .06));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  margin-bottom: 28px;
}
.tools-hero h1 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -.5px;
  margin: 0 0 10px;
  line-height: 1.25;
  color: var(--text);
}
.tools-hero .subtitle {
  font-size: 16px;
  color: var(--text2);
  margin: 0 0 14px;
  line-height: 1.6;
}
.tools-hero .badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}
.tools-hero .badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(34, 197, 94, .12);
  color: var(--green);
  border: 1px solid rgba(34, 197, 94, .2);
}
.tools-hero .badge.warn {
  background: rgba(245, 158, 11, .12);
  color: var(--accent);
  border-color: rgba(245, 158, 11, .2);
}
.tools-hero .last-updated {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text3);
}
.tools-hero .last-updated .dot {
  width: 6px; height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

/* ─────────────────────────────────────────
 * 2. Calculator 섹션 (입력 폼 + 결과)
 * ───────────────────────────────────────── */
.tools-calc {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 28px;
}
.tools-calc-inputs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 18px;
}
@media (min-width: 600px) {
  .tools-calc-inputs.cols-2 { grid-template-columns: 1fr 1fr; }
  .tools-calc-inputs.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
}
.tools-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tools-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
}
.tools-field input,
.tools-field select {
  background: var(--bg);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color .15s;
}
.tools-field input:focus,
.tools-field select:focus {
  border-color: var(--accent);
}
.tools-field .hint {
  font-size: 11px;
  color: var(--text3);
}
.tools-calc-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #000;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: -.2px;
  transition: filter .15s;
}
.tools-calc-btn:hover {
  filter: brightness(1.1);
}

/* 결과 카드 */
.tools-result {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px dashed var(--border2);
  display: none;
}
.tools-result.active { display: block; }
.tools-result-headline {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent);
  margin: 4px 0 10px;
  letter-spacing: -1px;
}
.tools-result-headline.negative { color: var(--red); }
.tools-result-headline.positive { color: var(--green); }
.tools-result-rows {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}
.tools-result-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.tools-result-row .label {
  color: var(--text2);
}
.tools-result-row .value {
  color: var(--text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.tools-share-bar {
  margin-top: 18px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tools-share-btn {
  padding: 8px 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  text-decoration: none;
}
.tools-share-btn:hover { background: var(--bg4); }

/* ─────────────────────────────────────────
 * 3. How-to 섹션
 * ───────────────────────────────────────── */
.tools-howto {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 28px;
}
.tools-howto h2,
.tools-regulation h2,
.tools-faq h2,
.tools-related h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -.3px;
}
.tools-howto-steps {
  display: grid;
  gap: 14px;
}
.tools-howto-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.tools-howto-num {
  flex-shrink: 0;
  width: 28px; height: 28px;
  background: var(--accent);
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
}
.tools-howto-step .body h3 {
  font-size: 15px;
  font-weight: 600;
  margin: 2px 0 4px;
}
.tools-howto-step .body p {
  font-size: 14px;
  color: var(--text2);
  margin: 0;
  line-height: 1.55;
}

/* ─────────────────────────────────────────
 * 4. Regulation/Tax Law 요약 표
 * ───────────────────────────────────────── */
.tools-regulation {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 28px;
}
.tools-reg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.tools-reg-table th,
.tools-reg-table td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
}
.tools-reg-table th {
  color: var(--text2);
  font-weight: 600;
  font-size: 13px;
  width: 38%;
}
.tools-reg-table td {
  color: var(--text);
}
.tools-reg-source {
  margin-top: 14px;
  font-size: 12px;
  color: var(--text3);
}
.tools-reg-source a {
  color: var(--accent);
  text-decoration: none;
}

/* ─────────────────────────────────────────
 * 5. FAQ 섹션
 * ───────────────────────────────────────── */
.tools-faq {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 28px;
}
.tools-faq-item {
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}
.tools-faq-item:last-child { border-bottom: none; }
.tools-faq-q {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
}
.tools-faq-q::-webkit-details-marker { display: none; }
.tools-faq-q::after {
  content: '+';
  color: var(--accent);
  font-size: 20px;
  font-weight: 400;
  transition: transform .2s;
}
details[open] .tools-faq-q::after {
  content: '−';
}
.tools-faq-a {
  margin-top: 10px;
  color: var(--text2);
  font-size: 14px;
  line-height: 1.65;
}

/* ─────────────────────────────────────────
 * 6. Related Tools (카드 그리드)
 * ───────────────────────────────────────── */
.tools-related {
  margin-bottom: 28px;
}
.tools-related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 600px) {
  .tools-related-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px) {
  .tools-related-grid { grid-template-columns: 1fr 1fr 1fr; }
}
.tools-card {
  display: block;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-decoration: none;
  color: var(--text);
  transition: border-color .15s, transform .15s;
}
.tools-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.tools-card .icon {
  font-size: 22px;
  margin-bottom: 8px;
}
.tools-card .title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
  letter-spacing: -.2px;
}
.tools-card .desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.5;
}

/* ─────────────────────────────────────────
 * 7. CTA (텔레그램 알림 가입)
 * ───────────────────────────────────────── */
.tools-cta {
  background: linear-gradient(135deg, rgba(34, 197, 94, .08), rgba(245, 158, 11, .08));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  margin-bottom: 28px;
}
.tools-cta h2 {
  font-size: 20px;
  margin: 0 0 8px;
  letter-spacing: -.3px;
}
.tools-cta p {
  font-size: 14px;
  color: var(--text2);
  margin: 0 0 16px;
}
.tools-cta-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--green);
  color: #000;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  font-size: 15px;
  transition: filter .15s;
}
.tools-cta-btn:hover { filter: brightness(1.1); }

/* ─────────────────────────────────────────
 * 8. /tools 허브 페이지 전용
 * ───────────────────────────────────────── */
.tools-hub-category {
  margin-bottom: 36px;
}
.tools-hub-category h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.tools-hub-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 600px) {
  .tools-hub-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 900px) {
  .tools-hub-grid { grid-template-columns: 1fr 1fr 1fr; }
}

/* RTL (아랍어) */
[dir="rtl"] .tools-howto-step { flex-direction: row-reverse; }
[dir="rtl"] .tools-reg-table th,
[dir="rtl"] .tools-reg-table td { text-align: right; }

/* ─────────────────────────────────────────
 * Tax Disclaimer (개선)
 * ───────────────────────────────────────── */
.tools-disclaimer {
  font-size: 12px;
  color: var(--text2);
  line-height: 1.7;
  padding: 12px 16px;
  background: rgba(244, 63, 94, .04);
  border-left: 3px solid rgba(244, 63, 94, .4);
  border-radius: 0 6px 6px 0;
  margin-top: 20px;
}

/* ─────────────────────────────────────────
 * Page SNS Share
 * ───────────────────────────────────────── */
.tools-page-share {
  margin-top: 24px;
}
.tools-share-label {
  font-size: 12px;
  color: var(--text3);
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.cp-sns-btn {
  font-size: 13px;
  font-weight: 600;
  border: none !important;
  transition: opacity .15s;
}
.cp-sns-btn:hover { opacity: .85; }
.cp-sns-more {
  font-weight: 700;
}

/* SNS Share Bar */
.tools-sns-bar{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 20px;padding:10px 14px;background:rgba(255,255,255,.05);border-radius:10px;border:1px solid rgba(255,255,255,.1);}
.tools-sns-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:7px;font-size:12px;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:opacity .2s,transform .1s;white-space:nowrap;}
.tools-sns-btn:hover{opacity:.85;transform:translateY(-1px);}
.sns-x{background:#000;color:#fff;}
.sns-fb{background:#1877F2;color:#fff;}
.sns-tg{background:#26A5E4;color:#fff;}
.sns-wa{background:#25D366;color:#fff;}
.sns-reddit{background:#FF4500;color:#fff;}
.sns-copy{background:#444;color:#fff;}
.sns-copy.copied{background:#22c55e;}