:root {
  --card-bg: #ececff;
  --card-border: #e5e7eb;
  --muted: #6b7280;
}

/* 공통 */
* {
  box-sizing: border-box;
}
html,
body {
  max-width: 100%;
  overflow-x: hidden;
}
body {
  font-family: Arial, sans-serif;
  padding: 20px;
  line-height: 1.5;
}
label,
input,
button,
select {
  font-size: 16px;
}

/* 가운데 래퍼 */
.wrapper {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

/* 카드 */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 12px;
  box-shadow: 0 1px 2px rgba(12, 12, 12, 0.337);
  width: 100%;
  max-width: 100%;
  text-align: left;
}
.rank-title {
  font-weight: 700;
  margin-bottom: 6px;
}
.muted {
  color: var(--muted);
  font-size: 13px;
  margin-top: 6px;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.divider {
  border-top: 1px dashed var(--card-border);
  margin-top: 10px;
  padding-top: 8px;
}
.counts {
  white-space: pre-line;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.no-data {
  color: #b91c1c;
}

/* 컨트롤 그리드 (가운데 배치) */
.controls {
  display: inline-grid;
  grid-template-columns: minmax(90px, 140px) minmax(0, 1fr);
  gap: 8px 12px;
  align-items: center;
  max-width: 720px;
}
.controls .full {
  grid-column: 1 / -1;
}

/* 인풋 */
input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
}

/* 버튼 */
button {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #cfd2ff;
  border-radius: 10px;
  background: #f1f3ff;
  font-weight: 700;
  cursor: pointer;
  transition:
    box-shadow 0.12s ease-in-out,
    transform 0.02s ease-in-out;
}
button:hover {
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}
button:active {
  transform: translateY(1px);
}

/* 설치 타입 선택 버튼 */
.pickbtn {
  background-color: #fff;
  color: #333;
  border: 0.1px solid #000;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
  font-weight: bold;
  padding: 12px;
  transition:
    background-color 0.3s,
    color 0.3s,
    box-shadow 0.12s,
    transform 0.02s;
}

.pickbtn:hover {
  background-color: #3b4cd2;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.pickbtn:active {
  transform: translateY(1px);
}

/* 세로 스택 */
.stack-vert {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}

/* 안내 배지 */
.remaining-box {
  background-color: rgb(231, 200, 1);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: bold;
}

/* 라디오/행 배치 */
.row {
  display: flex;
  justify-content: flex-start !important;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
}
.row > * {
  flex: 0 0 auto;
}
.row label {
  margin: 0;
}
input[type="radio"] {
  width: auto;
  margin: 0;
}

/* 이미지 래퍼 */
.img-wrap {
  text-align: center;
}

/* 결과 */
.result {
  margin-top: 20px;
  width: 100%;
  max-width: 100%;
}

/* 유튜브 박스 */
.yt-box {
  margin-bottom: 16px;
}
.yt-embed {
  position: relative;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
}
.yt-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* 가이드 이미지 */
#typeImage {
  max-width: 100%;
  max-height: 500px;
  width: auto;
  height: auto;
}

/* 입력 그룹 */
.input-group {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
  width: 100%;
}
.input-group label {
  flex: 0 0 140px;
  margin-right: 12px;
  margin-bottom: 0 !important;
  text-align: right;
  font-weight: bold;
}
.input-group input {
  flex: 1;
  margin-top: 0 !important;
}

/* 조합 선택기 스타일 */
.combo-selector {
  position: relative;
}

.selected-display {
  padding: 12px;
  background: rgba(59, 76, 210, 0.05);
  border-radius: 6px;
  border: 1px solid rgba(59, 76, 210, 0.2);
  margin-bottom: 10px;
}

.change-btn {
  width: 100%;
  padding: 10px 16px;
  background: #3b4cd2;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  transition:
    background-color 0.2s,
    transform 0.02s;
}

.change-btn:hover {
  background: #2a3bb7;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.change-btn:active {
  transform: translateY(1px);
}

/* 모달 스타일 */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.modal-content {
  background-color: white;
  border-radius: 12px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--card-border);
}

.modal-header h3 {
  margin: 0;
  font-size: 18px;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #6b7280;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: #000;
}

.modal-body {
  padding: 16px 20px;
  overflow-y: auto;
  max-height: calc(90vh - 70px);
}

.modal-option {
  padding: 12px;
  margin-bottom: 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  border: 2px solid transparent;
}

.modal-option:hover {
  background-color: rgba(59, 76, 210, 0.05);
  border-color: rgba(59, 76, 210, 0.3);
}

.modal-option.active {
  background-color: rgba(59, 76, 210, 0.1);
  border-color: #3b4cd2;
}

/* 총 필요수량 카드 스타일 */
.card.totals {
  background: #fff4e5;
  border: 1px solid #f3b673;
}

/* 플로팅 바 제거 */
.floating-bar {
  display: none !important;
}

/* 반응형 */
@media (max-width: 560px) {
  body {
    padding: 16px;
  }
  .controls {
    grid-template-columns: 1fr;
    max-width: 100%;
  }
  .controls label {
    margin-top: 6px;
  }
  input,
  select,
  button {
    width: 100%;
  }
  .card {
    margin-left: 0;
    margin-right: 0;
    padding: 12px 14px;
  }
  .row {
    justify-content: flex-start !important;
  }
  .row label {
    flex: 0 0 auto;
  }
}

/* 입력 그룹 모바일 반응형 */
@media (max-width: 500px) {
  .input-group {
    flex-direction: column;
    align-items: flex-start;
  }
  .input-group label {
    flex: auto;
    width: 100%;
    text-align: left;
    margin-bottom: 6px !important;
  }
  .input-group input {
    width: 100%;
  }

  .modal {
    padding: 10px;
  }

  .modal-content {
    max-width: 100%;
  }
}
/* 이미지 카드 스타일 */
.image-card {
  margin-bottom: 16px;
  text-align: center;
  border-radius: 8px;
  overflow: hidden;
  width: 100%;
}

.main-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  object-fit: contain; /* 비율 유지하면서 영역에 맞춤 */
}

/* 반응형 */
@media (max-width: 560px) {
  .main-image {
    border-radius: 4px; /* 모바일에서는 약간 작은 라운딩 */
  }
}

/* SEO Content Section */
.info-section {
  max-width: 800px;
  margin: 40px auto 0;
  padding: 0 10px;
}
.content-box {
  background: #ffffff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  border: 1px solid var(--card-border);
}
.content-box h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: #111827;
}
.content-box h3 {
  font-size: 1.2rem;
  margin: 24px 0 12px;
  color: #374151;
}
.content-box p, .content-box li {
  color: #4b5563;
  line-height: 1.7;
}
.content-box ul {
  padding-left: 20px;
}
.content-box li {
  margin-bottom: 8px;
}