:root {
  --bg: #f4f6f8;
  --card-bg: #ffffff;
  --text: #212121;
  --text-muted: #616161;
  --border: #e0e0e0;
  --primary: #1565c0;
  --primary-hover: #0d47a1;
  --secondary: #f5f5f5;
  --secondary-hover: #e0e0e0;

  --level-normal: #e8f5e9;
  --level-normal-border: #2e7d32;
  --level-borderline: #fff8e1;
  --level-borderline-border: #f9a825;
  --level-moderate: #ffe0b2;
  --level-moderate-border: #ef6c00;
  --level-high: #ffebee;
  --level-high-border: #c62828;
  --level-very-high: #f3e5f5;
  --level-very-high-border: #6a1b9a;
  --level-unknown: #f5f5f5;
  --level-unknown-border: #757575;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.page-header {
  text-align: center;
  margin-bottom: 28px;
  padding: 20px 16px;
}

.page-companies {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: nowrap;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid #e0e4ea;
}

.page-company {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-decoration: none;
  color: inherit;
  white-space: nowrap;
}

.page-company:hover .page-company-name {
  color: var(--primary);
}

.page-company-name {
  font-size: 1rem;
  font-weight: 600;
  color: #37474f;
}

.page-company-url {
  font-size: 0.78rem;
  color: #90a4ae;
}

.page-separator {
  font-size: 1.2rem;
  font-weight: 300;
  color: #b0bec5;
}

.page-header h1 {
  margin: 0 0 8px;
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(135deg, #1565c0, #42a5f5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header p {
  margin: 0;
  color: #78909c;
  font-size: 0.95rem;
}

.card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  border: 1px solid rgba(0, 0, 0, 0.04);
}

/* ── Form card ── */
#health-form.card {
  padding: 28px 24px;
  background: linear-gradient(135deg, #ffffff 0%, #f8faff 100%);
  border: 1px solid #a8b5cc;
  box-shadow: 0 4px 20px rgba(21, 101, 192, 0.06);
}

.form-section {
  margin-bottom: 24px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  border: 1px solid #b8c4d8;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-section:hover {
  border-color: #d0d8e8;
  box-shadow: 0 2px 8px rgba(21, 101, 192, 0.04);
}

.form-section h2 {
  font-size: 1rem;
  margin: 0 0 14px;
  padding: 0 0 10px;
  border-bottom: 2px solid #e8edf5;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  flex: 1 1 160px;
  position: relative;
}

.field.required > span:first-child::after {
  content: " *";
  color: #c62828;
}

.field span:first-child {
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: #455a64;
}

.field input,
.field select {
  padding: 11px 14px;
  border: 1.5px solid #b0bec5;
  border-radius: 10px;
  font-size: 1rem;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field input:hover,
.field select:hover {
  border-color: #78909c;
  background: #fafbff;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.12);
  background: #fff;
}

.field input::placeholder {
  color: #b0bec5;
}

.field .unit {
  position: absolute;
  right: 14px;
  bottom: 12px;
  font-size: 0.82rem;
  color: #90a4ae;
  pointer-events: none;
  font-weight: 500;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}

.btn-primary,
.btn-secondary {
  padding: 13px 28px;
  border: none;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.3px;
}

.btn-primary {
  background: linear-gradient(135deg, #1565c0, #1976d2);
  color: #fff;
  box-shadow: 0 2px 8px rgba(21, 101, 192, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0d47a1, #1565c0);
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.35);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(21, 101, 192, 0.2);
}

.btn-secondary {
  background: #f0f2f5;
  color: #546e7a;
  border: 1.5px solid #dce3ed;
}

.btn-secondary:hover {
  background: #e4e8ee;
  border-color: #b0bec5;
}

.required-hint {
  font-size: 0.82rem;
  color: #90a4ae;
  margin: 14px 0 0;
}

.hidden {
  display: none !important;
}

.error-banner {
  background: linear-gradient(135deg, #ffebee, #fce4ec);
  color: #b71c1c;
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 16px;
  border: 1px solid #ef9a9a;
  box-shadow: 0 2px 8px rgba(198, 40, 40, 0.1);
  white-space: pre-line;
  font-size: 0.95rem;
}

.result-panel {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.result-header h2 {
  margin: 0;
  font-size: 1.4rem;
}

.result-actions {
  display: flex;
  gap: 8px;
}

.overall-card {
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  margin-bottom: 16px;
  border: 2px solid transparent;
}

.overall-level {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.overall-summary {
  font-size: 1.05rem;
}

.derived-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.derived-item {
  background: var(--bg);
  padding: 12px;
  border-radius: 8px;
}

.derived-item span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.derived-item strong {
  font-size: 1.2rem;
}

.indicators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.indicator-card {
  border-radius: 10px;
  padding: 16px;
  border-left: 5px solid transparent;
}

.indicator-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.indicator-label {
  font-weight: 600;
}

.indicator-badge {
  font-size: 0.8rem;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  font-weight: 600;
}

.indicator-value {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.indicator-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.level-normal { background: var(--level-normal); border-color: var(--level-normal-border); }
.level-borderline { background: var(--level-borderline); border-color: var(--level-borderline-border); }
.level-moderate { background: var(--level-moderate); border-color: var(--level-moderate-border); }
.level-high { background: var(--level-high); border-color: var(--level-high-border); }
.level-very-high { background: var(--level-very-high); border-color: var(--level-very-high-border); }
.level-unknown { background: var(--level-unknown); border-color: var(--level-unknown-border); }

.metabolic-status {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 12px;
}

.criteria-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.criterion {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.criterion:last-child {
  border-bottom: none;
}

.criterion-check {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 700;
  background: #e0e0e0;
  color: #616161;
  flex-shrink: 0;
}

.criterion.matched .criterion-check {
  background: var(--level-high-border);
  color: #fff;
}

.criterion.unavailable {
  color: var(--text-muted);
}

#advice-list {
  padding-left: 20px;
}

#advice-list li {
  margin-bottom: 10px;
}

.advice-category {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--secondary);
  padding: 2px 8px;
  border-radius: 4px;
  margin-right: 8px;
  color: var(--text-muted);
}

.disclaimer {
  font-size: 0.9rem;
  color: var(--text-muted);
  background: #fff3e0;
  border-left: 4px solid #ef6c00;
}

.save-sheet-status {
  margin-top: 12px;
  font-size: 0.95rem;
}

.status-pending { color: var(--text-muted); }
.status-success { color: #2e7d32; }
.status-info { color: var(--text-muted); }
.status-error { color: #c62828; }

.products-intro,
.products-empty {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.products-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.product-card {
  background: var(--bg);
  border-radius: 10px;
  padding: 16px;
  border-left: 4px solid var(--primary);
}

.product-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.product-name {
  font-size: 1.1rem;
  font-weight: 700;
}

.product-category {
  font-size: 0.8rem;
  background: #e3f2fd;
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
}

.product-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.product-reason,
.product-caution {
  font-size: 0.95rem;
  margin: 0 0 8px;
}

.product-caution {
  color: #bf360c;
}

@media (max-width: 600px) {
  .container {
    padding: 16px 12px 32px;
  }

  #health-form.card {
    padding: 20px 16px;
  }

  .form-section {
    padding: 14px 12px;
  }

  .field-row {
    flex-direction: column;
    gap: 12px;
  }

  .field {
    flex: 1 1 auto;
  }

  .form-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    text-align: center;
  }

  .result-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .overall-level {
    font-size: 1.6rem;
  }

  .page-header h1 {
    font-size: 1.5rem;
  }
}

/* ── Top Controls (Refresh + Language) ── */
.top-controls {
  position: fixed;
  top: 16px;
  right: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1000;
}

.refresh-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid #e0e4ea;
  color: #546e7a;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.refresh-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: rotate(180deg);
}

.refresh-btn.refreshing {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ── Language Switcher ── */
.lang-switcher {
  position: relative;
}

.lang-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1.5px solid #b0bec5;
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #546e7a;
  transition: all 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.lang-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(21,101,192,0.15);
}

.lang-dropdown {
  position: absolute;
  top: 48px;
  right: 0;
  background: #fff;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  border: 1px solid #e0e0e0;
  overflow: hidden;
  min-width: 80px;
}

.lang-dropdown.hidden {
  display: none !important;
}

.lang-option {
  display: block;
  width: 100%;
  padding: 10px 16px;
  border: none;
  background: none;
  font-size: 0.95rem;
  font-weight: 500;
  color: #455a64;
  cursor: pointer;
  text-align: center;
  transition: background 0.15s;
}

.lang-option:hover {
  background: #e3f2fd;
}

.lang-option.active {
  color: var(--primary);
  font-weight: 700;
  background: #e8f0fe;
}

.lang-option + .lang-option {
  border-top: 1px solid #f0f0f0;
}

/* ── Print-only header (hidden on screen) ── */
.print-header {
  display: none;
}

@media print {
  body {
    background: #fff;
  }

  .print-header {
    display: block;
    text-align: center;
    padding: 0 0 16px;
    margin-bottom: 16px;
    border-bottom: 2px solid #333;
  }

  .print-companies {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  .print-company {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    text-decoration: none;
    color: inherit;
  }

  .print-company-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: #222;
  }

  .print-company-url {
    font-size: 0.8rem;
    color: #666;
  }

  .print-separator {
    font-size: 1.4rem;
    font-weight: 300;
    color: #999;
  }

  .no-print,
  .page-header p,
  .form-actions,
  .required-hint,
  #health-form,
  .disclaimer,
  .lang-switcher {
    display: none !important;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }

  .result-panel {
    display: block !important;
  }

  .overall-card {
    color: #000 !important;
    background: #fff !important;
    border: 2px solid #000 !important;
  }

  .indicator-card,
  .derived-item,
  .criterion {
    background: #fff !important;
    color: #000 !important;
  }

  .page-header h1 {
    -webkit-text-fill-color: #222 !important;
    color: #222 !important;
    background: none !important;
  }

  .field input,
  .field select {
    border: 1.5px solid #999 !important;
  }
}