/* ==========================================================
   tool.css — 도구 페이지 공통
   로드 대상: barcode-generator.html, qr-generator.html
   base.css + landing.css 이후에 로드
   ========================================================== */

/* ===== TOOL SECTION ===== */
/* 기본값 = 모바일 */
.tool-section {
  background: var(--gray-100);
  padding: 48px 16px;
}

.tool-card {
  background: var(--white);
  border-radius: 16px;
  padding: 24px 18px;
  max-width: 680px;
  margin: 0 auto;
  box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

.tool-field {
  margin-bottom: 20px;
}

.tool-label {
  display: block;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.tool-input {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1rem;
  color: var(--text);
  transition: border-color 0.2s;
}

.tool-input:focus {
  outline: none;
  border-color: var(--navy);
}

.tool-textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1rem;
  color: var(--text);
  resize: vertical;
  min-height: 100px;
  transition: border-color 0.2s;
}

.tool-textarea:focus {
  outline: none;
  border-color: var(--navy);
}

.tool-select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 1rem;
  color: var(--text);
  background: var(--white);
  cursor: pointer;
  transition: border-color 0.2s;
}

.tool-select:focus {
  outline: none;
  border-color: var(--navy);
}

.tool-hint {
  font-size: 0.82rem;
  color: var(--gray-600);
  margin-top: 6px;
  line-height: 1.5;
}

.tool-error {
  font-size: 0.9rem;
  color: #c0392b;
  margin-top: 12px;
  padding: 10px 14px;
  background: #fdf2f2;
  border-radius: 6px;
  border-left: 3px solid #c0392b;
}

.tool-btn-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

/* 네이비 아웃라인 버튼 */
.btn-outline-navy {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}

.btn-outline-navy:hover {
  background: var(--navy);
  color: var(--white);
}

/* ===== 미리보기 영역 ===== */
.barcode-preview {
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  border-radius: 10px;
  padding: 24px;
  flex-direction: column;
  gap: 12px;
}

.preview-placeholder {
  color: var(--gray-600);
  font-size: 0.9rem;
  text-align: center;
  line-height: 1.6;
}

.barcode-preview svg,
.barcode-preview canvas {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* ===== QR 타입 선택 탭 ===== */
.qr-type-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

/* 기본값 = 모바일 */
.qr-type-btn {
  padding: 7px 12px;
  border: 2px solid var(--gray-200);
  border-radius: 20px;
  background: var(--white);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gray-600);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.qr-type-btn:hover {
  border-color: var(--navy);
  color: var(--navy);
}

.qr-type-btn.active {
  border-color: var(--navy);
  background: var(--navy);
  color: var(--white);
}

/* ===== QR 옵션 행 ===== */
.qr-options-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

/* 기본값 = 모바일: 전체 너비 */
.qr-option-group {
  flex: 1;
  min-width: 100%;
}

/* 색상 선택 */
.color-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.color-picker-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.color-picker-wrap input[type="color"] {
  width: 40px;
  height: 40px;
  border: 2px solid var(--gray-200);
  border-radius: 6px;
  padding: 2px;
  cursor: pointer;
  background: none;
}

.color-picker-label {
  font-size: 0.82rem;
  color: var(--gray-600);
}

/* 크기 선택 */
.size-btn-group {
  display: flex;
  gap: 6px;
}

.size-btn {
  flex: 1;
  padding: 8px 4px;
  border: 2px solid var(--gray-200);
  border-radius: 6px;
  background: var(--white);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gray-600);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.size-btn:hover {
  border-color: var(--navy);
  color: var(--navy);
}

.size-btn.active {
  border-color: var(--navy);
  background: var(--navy);
  color: var(--white);
}

/* ===== WiFi 전용 필드 ===== */
.wifi-fields {
  display: grid;
  gap: 14px;
}

.wifi-security-row {
  display: flex;
  gap: 6px;
}

.wifi-security-btn {
  flex: 1;
  padding: 9px 4px;
  border: 2px solid var(--gray-200);
  border-radius: 6px;
  background: var(--white);
  font-family: 'Noto Sans KR', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--gray-600);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}

.wifi-security-btn.active {
  border-color: var(--navy);
  background: var(--navy);
  color: var(--white);
}

/* ===== 구분선 ===== */
.tool-divider {
  border: none;
  border-top: 1px solid var(--gray-200);
  margin: 20px 0;
}

/* ===== 활용 사례 섹션 ===== */
.tool-use-section {
  background: var(--white);
}

/* 기본값 = 모바일: 1열 */
.tool-use-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.tool-use-card {
  background: var(--gray-100);
  border-radius: 12px;
  padding: 28px 20px;
  text-align: center;
}

.tool-use-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.tool-use-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 6px;
}

.tool-use-card p {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.6;
  word-break: keep-all;
}

/* ===== 소프트 CTA 섹션 ===== */
.tool-cta-section {
  background: var(--gray-100);
  text-align: center;
}

.tool-cta-section .section-title {
  margin-bottom: 16px;
}

/* 기본값 = 모바일: column */
.tool-cta-btns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
}

.tool-cta-btns .btn {
  width: 100%;
  max-width: 320px;
  justify-content: center;
}

/* ===== DESKTOP — TOOL ===== */
@media (min-width: 481px) {
  .qr-type-tabs {
    gap: 8px;
  }

  .qr-type-btn {
    padding: 8px 16px;
    font-size: 0.88rem;
  }
}

@media (min-width: 769px) {
  .tool-section {
    padding: 80px 24px;
  }

  .tool-card {
    padding: 40px;
  }

  .qr-options-row {
    gap: 20px;
  }

  .qr-option-group {
    min-width: 140px;
  }

  .tool-use-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }

  .tool-cta-btns {
    flex-direction: row;
    align-items: center;
  }

  .tool-cta-btns .btn {
    width: auto;
    max-width: none;
  }

  .wifi-security-row {
    gap: 10px;
  }
}