/* ============================
   Base & Reset
   ============================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #3b6fd4;
  --primary-dark: #2a52a8;
  --primary-light: #e8effe;
  --visit-color: #0d6f56;
  --visit-light: #e6f7f3;
  --inner-color: #b45309;
  --inner-light: #fef3c7;
  --inner-mon-color: #7c3aed;
  --inner-mon-light: #f3f0ff;
  --common-color: #6d28d9;
  --common-light: #ede9fe;
  --accent: #e53e3e;
  --success: #38a169;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --radius: 12px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans KR', sans-serif;
  background: linear-gradient(135deg, #f0f4ff 0%, #fafbff 60%, #f5f8f0 100%);
  color: var(--gray-800);
  min-height: 100vh;
  line-height: 1.6;
}

/* ============================
   Header
   ============================ */
.site-header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  padding: 0;
  box-shadow: var(--shadow-lg);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  color: #fff;
}

.header-logo i {
  font-size: 2.2rem;
  opacity: .9;
}

.header-logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.02em;
}

.header-logo p {
  font-size: .85rem;
  opacity: .8;
  margin-top: 2px;
}

.header-badge {
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.35);
  color: #fff;
  padding: 7px 18px;
  border-radius: 20px;
  font-size: .85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ============================
   Main Content
   ============================ */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ============================
   Info Banner
   ============================ */
.info-banner {
  background: var(--primary-light);
  border: 1px solid #c7d8fc;
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--primary-dark);
  font-size: .95rem;
}

.info-banner i { font-size: 1.2rem; flex-shrink: 0; }
.info-banner strong { font-weight: 600; }

/* ============================
   Card
   ============================ */
.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 28px;
  border: 1px solid var(--gray-200);
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-title i { color: var(--primary); }

/* ============================
   Fee Reference Table
   ============================ */
.fee-table-wrap { overflow-x: auto; margin-bottom: 20px; }

.fee-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .93rem;
}

.fee-table thead tr {
  background: var(--gray-800);
  color: #fff;
}

.fee-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: .88rem;
  letter-spacing: .02em;
}

.fee-table td { padding: 11px 16px; border-bottom: 1px solid var(--gray-100); }

.fee-table tbody tr:hover { background: var(--gray-50); }

.fee-table .amount {
  font-weight: 700;
  color: var(--primary-dark);
  font-size: 1rem;
  white-space: nowrap;
}

.row-visit td:first-child { border-left: 3px solid var(--visit-color); }
.row-inner td:first-child { border-left: 3px solid var(--inner-color); }
.row-common td:first-child { border-left: 3px solid var(--common-color); }

/* ============================
   Badge
   ============================ */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: .75rem;
  font-weight: 600;
  margin-right: 6px;
  white-space: nowrap;
}

.badge-visit { background: var(--visit-light); color: var(--visit-color); }
.badge-inner { background: var(--inner-light); color: var(--inner-color); }
.badge-common { background: var(--common-light); color: var(--common-color); }

/* ============================
   Model Summary Boxes
   ============================ */
.model-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 4px;
}

@media (max-width: 900px) {
  .model-summary { grid-template-columns: 1fr; }
}

.model-box {
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  border: 1px solid transparent;
}

.model-visit {
  background: var(--visit-light);
  border-color: #a7e3d4;
}

.model-inner {
  background: var(--inner-light);
  border-color: #fcd975;
}

.model-visit2 {
  background: #eaf7f2;
  border-color: #7dd3b8;
}

.model-visit2 h3 { color: #0a6b4e !important; }
.model-visit2 .model-total { color: #0a6b4e !important; }

.model-inner-mon {
  background: var(--inner-mon-light);
  border-color: #c4b5fd;
}

.model-inner-mon h3 { color: var(--inner-mon-color); }
.model-inner-mon .model-total-mon { color: var(--inner-mon-color); }

.alt-label {
  display: inline-block;
  font-size: .75rem;
  color: var(--inner-mon-color);
  font-weight: 600;
  background: var(--inner-mon-light);
  border: 1px solid #c4b5fd;
  border-radius: 4px;
  padding: 1px 6px;
  margin-left: 4px;
}

.model-box h3 {
  font-size: .95rem;
  font-weight: 700;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.model-visit h3 { color: var(--visit-color); }
.model-inner h3 { color: var(--inner-color); }

.model-formula {
  font-size: .85rem;
  color: var(--gray-700);
  line-height: 1.8;
}

.model-formula .num {
  font-weight: 700;
  color: var(--gray-800);
}

.model-total {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: 10px;
}

.model-visit .model-total { color: var(--visit-color); }
.model-inner .model-total { color: var(--inner-color); }

/* ============================
   Simulator Grid
   ============================ */
.simulator-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
  align-items: start;
}

.panel-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--gray-100);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ============================
   Form Elements
   ============================ */
.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-size: .9rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.form-label i { color: var(--primary); }

.input-with-unit {
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-input {
  width: 120px;
  padding: 9px 12px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--gray-800);
  transition: border-color .2s;
  outline: none;
}

.form-input:focus { border-color: var(--primary); }

.unit { font-size: .9rem; color: var(--gray-600); font-weight: 500; }

.range-slider {
  width: 100%;
  margin-top: 10px;
  accent-color: var(--primary);
  cursor: pointer;
  height: 4px;
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: .75rem;
  color: var(--gray-400);
  margin-top: 4px;
}

.help-text {
  font-size: .78rem;
  color: var(--gray-400);
  margin-top: 5px;
}

/* ============================
   Model Radio Selector
   ============================ */
.model-selector {
  display: flex;
  gap: 10px;
}

.model-radio { cursor: pointer; flex: 1; }

.model-radio input[type="radio"] { display: none; }

.model-radio-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 12px 8px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: .82rem;
  font-weight: 600;
  color: var(--gray-600);
  text-align: center;
  transition: all .2s;
  background: var(--gray-50);
  cursor: pointer;
  line-height: 1.4;
}

.model-radio-label i { font-size: 1.4rem; margin-bottom: 2px; }

.model-radio input:checked + .model-radio-label {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary-dark);
  box-shadow: 0 0 0 3px rgba(59,111,212,.15);
}

.model-radio small { font-weight: 400; font-size: .74rem; opacity: .8; }

/* ============================
   Toggle Switch
   ============================ */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.toggle-switch { position: relative; display: inline-block; width: 46px; height: 24px; }

.toggle-switch input { opacity: 0; width: 0; height: 0; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--gray-300);
  border-radius: 24px;
  cursor: pointer;
  transition: .2s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: .2s;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
}

.toggle-switch input:checked + .toggle-slider { background: var(--primary); }
.toggle-switch input:checked + .toggle-slider::before { transform: translateX(22px); }

.toggle-desc { font-size: .88rem; font-weight: 500; color: var(--gray-600); }

/* ============================
   Calculate Button
   ============================ */
.btn-calculate {
  width: 100%;
  padding: 14px 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all .2s;
  box-shadow: 0 4px 14px rgba(59,111,212,.4);
  letter-spacing: .02em;
  margin-top: 8px;
}

.btn-calculate:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(59,111,212,.5);
}

.btn-calculate:active { transform: translateY(0); }

/* ============================
   Result Panel
   ============================ */
.result-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.selected-model-info {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
}

.model-icon { font-size: 1.5rem; color: var(--primary); }

.model-name { font-weight: 700; font-size: .95rem; color: var(--gray-800); flex: 1; }

.case-price {
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .85rem;
  font-weight: 700;
  white-space: nowrap;
}

/* ============================
   Result Box
   ============================ */
.result-box {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--gray-200);
}

.result-box-header {
  padding: 12px 18px;
  font-size: .9rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
}

.result-monthly .result-box-header { background: linear-gradient(90deg, #1e6ed4, #3b8fe8); }
.result-annual .result-box-header { background: linear-gradient(90deg, #0d6f56, #21a37a); }

.result-box-body { padding: 16px 18px; }

.result-breakdown {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--gray-200);
  min-height: 40px;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .88rem;
}

.breakdown-row .label { color: var(--gray-600); }

.breakdown-row .value {
  font-weight: 600;
  color: var(--gray-800);
}

.breakdown-row .value.highlight { color: var(--primary-dark); }

.result-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-label { font-size: .9rem; font-weight: 600; color: var(--gray-700); }

.result-amount {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -.02em;
}

.result-monthly .result-amount { color: var(--primary-dark); }
.result-annual .result-amount { color: var(--visit-color); }

/* note badge */
.note-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 7px;
  background: var(--inner-mon-light);
  color: var(--inner-mon-color);
  border: 1px solid #c4b5fd;
  border-radius: 4px;
  font-size: .74rem;
  font-weight: 600;
}

/* ============================
   Inner Option Group (내방형 2차 대체)
   ============================ */
.inner-option-group {
  border: 2px solid var(--inner-mon-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 4px;
  background: var(--inner-mon-light);
}

.inner-option-header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  background: var(--inner-mon-color);
  color: #fff;
  font-size: .87rem;
  font-weight: 700;
}

.inner-option-body {
  padding: 12px 14px;
}

.inner-option-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.inner-option-labels {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.inner-fee-compare {
  font-size: .78rem;
  color: var(--gray-600);
}

.inner-fee-compare strong { color: var(--inner-mon-color); }

.inner-option-info {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px 10px;
  background: rgba(255,255,255,.7);
  border-radius: 6px;
  font-size: .78rem;
}

.opt-off { color: var(--inner-color); font-weight: 500; }
.opt-on  { color: var(--inner-mon-color); font-weight: 500; }

/* 내방형 대체 토글 색상 */
.toggle-slider-inner { }
.toggle-switch input:checked + .toggle-slider-inner { background: var(--inner-mon-color); }

/* 수가 기준표 내 대체 가능 행 강조 */
.highlight-row td { background: #fdf6ff !important; }
.highlight-row td:first-child { border-left: 3px solid var(--inner-mon-color); }

.row-monitoring-alt td:first-child { border-left: 3px solid var(--inner-mon-color); }

.alt-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  margin-left: 6px;
  padding: 2px 7px;
  background: var(--inner-mon-light);
  color: var(--inner-mon-color);
  border: 1px solid #c4b5fd;
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 700;
}

.alt-badge-mon {
  background: #ffe4e1;
  color: #b91c1c;
  border-color: #fca5a5;
}

.alt-note {
  font-size: .78rem;
  color: var(--inner-mon-color);
  font-weight: 600;
  line-height: 1.4;
}

/* 내방형 대체 안내 박스 */
.inner-alt-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 20px;
  padding: 14px 18px;
  background: linear-gradient(90deg, #f3f0ff, #fdf6ff);
  border: 1px solid #c4b5fd;
  border-left: 4px solid var(--inner-mon-color);
  border-radius: var(--radius-sm);
  font-size: .88rem;
  color: var(--gray-700);
  line-height: 1.7;
}

.inner-alt-notice > i {
  color: var(--inner-mon-color);
  font-size: 1.15rem;
  margin-top: 2px;
  flex-shrink: 0;
}

.diff-chip {
  display: inline-block;
  background: #fee2e2;
  color: #b91c1c;
  border-radius: 4px;
  padding: 1px 7px;
  font-weight: 700;
  font-size: .85rem;
}

/* 2026 배지 */
.year-tag {
  background: rgba(255,255,255,.25);
  border: 1px solid rgba(255,255,255,.4);
  border-radius: 10px;
  padding: 2px 8px;
  font-size: .75rem;
  margin-left: 6px;
  font-weight: 600;
}

.year-chip {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 6px;
  padding: 3px 10px;
  font-size: .78rem;
  font-weight: 700;
  margin-left: 8px;
  border: 1px solid #c3d5f7;
}

.badge-2026 {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  font-size: .78rem;
  font-weight: 700;
  margin-left: 8px;
}

/* ============================
   Chart
   ============================ */
.chart-area {
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  padding: 16px;
  border: 1px solid var(--gray-200);
}

/* ============================
   Detail Breakdown
   ============================ */
.detail-breakdown {
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  padding: 16px;
  border: 1px solid var(--gray-200);
}

.detail-breakdown h4 {
  font-size: .88rem;
  font-weight: 700;
  color: var(--gray-700);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}

.detail-table th {
  text-align: left;
  padding: 6px 10px;
  background: var(--gray-200);
  color: var(--gray-700);
  font-size: .8rem;
  font-weight: 600;
}

.detail-table td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-700);
}

.detail-table tr:last-child td { border-bottom: none; }

.detail-table .amount-col {
  text-align: right;
  font-weight: 600;
  color: var(--gray-800);
}

.detail-table tfoot td {
  font-weight: 700;
  color: var(--primary-dark);
  border-top: 2px solid var(--gray-300);
  font-size: .9rem;
}

/* ============================
   Compare Section
   ============================ */
.compare-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.compare-controls label {
  font-size: .9rem;
  font-weight: 600;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 8px;
}

.form-input-sm {
  width: 80px;
  padding: 7px 10px;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-family: inherit;
  font-weight: 600;
  color: var(--gray-800);
  outline: none;
  transition: border-color .2s;
}

.form-input-sm:focus { border-color: var(--primary); }

.btn-compare {
  padding: 9px 18px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .88rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all .2s;
}

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

.compare-table-wrap { overflow-x: auto; margin-bottom: 20px; }

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .9rem;
}

.compare-table thead tr { background: var(--gray-800); color: #fff; }

.compare-table th {
  padding: 11px 14px;
  text-align: right;
  font-weight: 600;
  font-size: .83rem;
}

.compare-table th:first-child { text-align: left; }

.compare-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--gray-100);
  text-align: right;
  font-weight: 500;
}

.compare-table td:first-child { text-align: left; font-weight: 600; }

.compare-table tbody tr:hover { background: var(--gray-50); }

.compare-table .row-visit1 { border-left: 3px solid var(--visit-color); }
.compare-table .row-visit2 { border-left: 3px solid #1a9e7c; }
.compare-table .row-inner { border-left: 3px solid var(--inner-color); }
.compare-table .row-inner-mon { border-left: 3px solid var(--inner-mon-color); }

.compare-table .max-col { color: var(--accent); font-weight: 700; }
.ml4 { margin-left: 4px; }

.compare-chart-area {
  margin-top: 8px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  padding: 16px;
  border: 1px solid var(--gray-200);
}

/* ============================
   Footer
   ============================ */
.site-footer {
  background: var(--gray-800);
  color: var(--gray-400);
  text-align: center;
  padding: 20px 24px;
  font-size: .8rem;
  line-height: 1.9;
}

/* ============================
   Responsive
   ============================ */
@media (max-width: 900px) {
  .simulator-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .header-inner { flex-direction: column; align-items: flex-start; }
  .card { padding: 20px 16px; }
  .model-selector { flex-wrap: wrap; }
  .result-amount { font-size: 1.3rem; }
  .compare-table th, .compare-table td { padding: 8px 10px; }
}

/* ============================
   Animate
   ============================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.result-box, .chart-area, .detail-breakdown {
  animation: fadeInUp .35s ease both;
}