/* ============================================================
   WSM-DSS — Global Styles
   Mobile-first responsive design
   Target: TH Sarabun New, accessible for elderly users
   ============================================================ */

/* --- Custom Properties --- */
:root {
  --primary: #2563eb;
  --primary-light: #dbeafe;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --success-light: #dcfce7;
  --warning: #d97706;
  --warning-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-700: #374151;
  --gray-900: #111827;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --font: 'TH Sarabun New', 'Sarabun', 'Noto Sans Thai', sans-serif;
  --transition: 0.2s ease;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.5;
  color: var(--gray-900);
  background: var(--gray-50);
}

/* --- Header --- */
.header {
  background: var(--primary);
  color: white;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
  margin-right: 24px;
}
.header-left .app-icon { font-size: 24px; flex-shrink: 0; }
.header-left .app-meta { flex: 1; min-width: 0; }
.header-left .app-label { font-size: 13px; opacity: 0.7; }
.header-left .scenario-name {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  font-size: 18px;
  font-weight: 700;
  font-family: var(--font);
  padding: 4px 10px;
  border-radius: 6px;
  width: 100%;
}
.header-left .scenario-name::placeholder { color: rgba(255,255,255,0.5); }
.header-left .scenario-name:focus { outline: none; border-color: rgba(255,255,255,0.7); background: rgba(255,255,255,0.25); }

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.autosave-badge {
  font-size: 13px;
  background: rgba(255,255,255,0.2);
  padding: 4px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

/* --- Stepper --- */
.stepper {
  display: flex;
  background: white;
  border-bottom: 1px solid var(--gray-200);
  padding: 0 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.stepper::-webkit-scrollbar { height: 0; }
.step {
  padding: 14px 16px;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  color: var(--gray-500);
  font-weight: 600;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  transition: color var(--transition), border-color var(--transition);
}
.step:hover { color: var(--gray-700); }
.step.active { color: var(--primary); border-bottom-color: var(--primary); }
.step.completed { color: var(--success); }
.step-num {
  width: 26px; height: 26px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
  flex-shrink: 0;
}
.step.active .step-num { background: var(--primary); color: white; }
.step.completed .step-num { background: var(--success); color: white; }
.step:not(.active):not(.completed) .step-num { background: var(--gray-200); color: var(--gray-500); }

.role-badge {
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
}
.role-community { background: #dbeafe; color: #1e40af; }
.role-expert { background: #fce7f3; color: #9d174d; }

/* --- Main Container --- */
.main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px;
}

/* --- Views --- */
.view { display: none; }
.view.active { display: block; }

/* --- Card --- */
.card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  margin-bottom: 20px;
}
.card-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.card-subtitle {
  font-size: 16px;
  color: var(--gray-500);
  margin-bottom: 16px;
}

/* --- Tables --- */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--gray-200); }
th { background: var(--gray-50); font-weight: 700; font-size: 16px; color: var(--gray-700); }
tr:hover { background: var(--gray-50); }

/* --- Forms --- */
input, select {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 17px;
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
input[type="number"] { width: 90px; text-align: center; }
input[type="text"] { width: 100%; }
input[type="checkbox"] { width: 20px; height: 20px; cursor: pointer; accent-color: var(--primary); }
input[type="range"] { height: 24px; accent-color: var(--primary); }

/* --- Buttons --- */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  font-family: var(--font);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: background var(--transition), transform 0.1s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #15803d; }
.btn-outline { background: white; color: var(--gray-700); border: 1px solid var(--gray-300); }
.btn-outline:hover { background: var(--gray-50); }
.btn-danger { background: white; color: var(--danger); border: 1px solid var(--danger); }
.btn-danger:hover { background: var(--danger-light); }
.btn-sm { padding: 6px 12px; font-size: 15px; }
.btn-group { display: flex; gap: 8px; margin-top: 16px; }

/* --- Tags --- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
}
.tag-blue { background: var(--primary-light); color: var(--primary); }
.tag-green { background: var(--success-light); color: var(--success); }
.tag-orange { background: var(--warning-light); color: var(--warning); }
.tag-red { background: var(--danger-light); color: var(--danger); }

/* --- Weight Bar --- */
.weight-bar {
  display: flex;
  height: 32px;
  border-radius: 6px;
  overflow: hidden;
  margin: 12px 0;
}
.weight-segment {
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 13px;
  font-weight: 700;
  transition: width 0.3s ease;
}

/* --- Progress Bar --- */
.progress-bar {
  height: 6px;
  background: var(--gray-200);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}
.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

/* --- Data Grid --- */
.data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* --- Data Field --- */
.data-field {
  background: var(--gray-50);
  border-radius: 6px;
  padding: 14px;
}
.data-field label {
  display: block;
  font-weight: 700;
  font-size: 16px;
  color: var(--gray-700);
  margin-bottom: 8px;
}
.auto-score {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 8px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 700;
  background: var(--primary-light);
  color: var(--primary);
}

/* --- Checklist Items --- */
.checklist-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--gray-100);
}
.checklist-item:last-child { border-bottom: none; }

/* --- Supplier Card --- */
.supplier-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  transition: border-color var(--transition);
}
.supplier-card:hover { border-color: var(--primary); }
.supplier-card.expanded { border-color: var(--primary); border-width: 2px; }
.supplier-card.incomplete { border-color: var(--warning); }
.supplier-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.supplier-name { font-size: 20px; font-weight: 700; }
.supplier-location { color: var(--gray-500); font-size: 16px; }

/* --- Ranking Cards --- */
.rank-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: var(--radius);
  margin-bottom: 8px;
}
.rank-1 { background: linear-gradient(135deg, #fef3c7, #fde68a); border: 2px solid #f59e0b; }
.rank-2 { background: var(--gray-100); border: 2px solid var(--gray-300); }
.rank-3 { background: #fff7ed; border: 2px solid #fb923c; }
.rank-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 700;
  flex-shrink: 0;
}
.rank-1 .rank-num { background: #f59e0b; color: white; }
.rank-2 .rank-num { background: #9ca3af; color: white; }
.rank-3 .rank-num { background: #fb923c; color: white; }
.rank-score { font-size: 24px; font-weight: 700; margin-left: auto; }

/* --- Formula Box --- */
.formula-box {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 16px;
  margin: 12px 0;
  text-align: center;
}

/* --- Chart Placeholder --- */
.chart-container {
  background: var(--gray-100);
  border-radius: var(--radius);
  min-height: 300px;
  padding: 16px;
  position: relative;
}

/* --- Comparison Panel --- */
.compare-panel {
  background: white;
  border: 2px solid var(--primary);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  overflow-x: auto;
}
.compare-best { background: var(--success-light); font-weight: 700; }

/* --- Mini Summary --- */
.mini-summary {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.mini-card {
  flex: 1;
  min-width: 150px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 12px;
  text-align: center;
}
.mini-card .label { font-size: 14px; color: var(--gray-500); }
.mini-card .value { font-size: 18px; font-weight: 700; margin-top: 2px; }

/* --- Footer Nav --- */
.footer-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

/* --- Criteria Config (editable list) --- */
.criteria-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--gray-100);
}
.criteria-item .drag-handle { color: var(--gray-400); cursor: grab; }
.criteria-item input[type="text"] { flex: 1; font-size: 15px; padding: 6px 10px; }

/* --- Export Grid --- */
.export-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.export-card {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.export-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); }
.export-card .icon { font-size: 40px; margin-bottom: 8px; }

/* --- Strength/Weakness Cards --- */
.insight-card {
  padding: 14px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.insight-card .icon { font-size: 28px; flex-shrink: 0; }
.insight-strength { background: var(--success-light); }
.insight-weakness { background: var(--warning-light); }

/* --- Cost Comparison --- */
.cost-compare {
  display: flex;
  gap: 20px;
  margin-top: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.cost-box {
  flex: 1;
  min-width: 200px;
  padding: 20px;
  border-radius: var(--radius);
  text-align: center;
}
.cost-box.old { background: var(--danger-light); }
.cost-box.new { background: var(--success-light); }
.cost-box .amount { font-size: 36px; font-weight: 700; }
.cost-box.old .amount { color: var(--danger); }
.cost-box.new .amount { color: var(--success); }
.cost-arrow { font-size: 28px; text-align: center; }
.cost-savings {
  text-align: center;
  margin-top: 16px;
  font-size: 24px;
  font-weight: 700;
  color: var(--success);
}

/* --- Summary Stat Cards --- */
.stat-cards {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.stat-card {
  flex: 1;
  min-width: 180px;
  padding: 20px;
  border-radius: var(--radius);
  text-align: center;
}
.stat-card .number { font-size: 36px; font-weight: 700; }
.stat-card .label { font-size: 16px; }
.stat-card.green { background: var(--success-light); color: var(--success); }
.stat-card.blue { background: var(--primary-light); color: var(--primary); }

/* ============================================================
   RESPONSIVE: TABLET (641px — 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .header { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
  .header-left { margin-right: 0; }
  .main { padding: 16px; }
  .card { padding: 20px; }
  .step { padding: 12px 14px; font-size: 15px; }
  .role-badge { display: none; }
  .mini-card { min-width: calc(50% - 8px); }
  .compare-panel { overflow-x: auto; }
}

/* ============================================================
   RESPONSIVE: MOBILE (≤640px)
   ผู้สูงอายุ: font ใหญ่, ปุ่มใหญ่, touch target ≥48px
   ============================================================ */
@media (max-width: 640px) {
  body { font-size: 20px; }

  /* Header: stack */
  .header { flex-direction: column; align-items: stretch; gap: 10px; padding: 12px 16px; }
  .header-left { margin-right: 0 !important; }
  .header-left .scenario-name { font-size: 17px !important; }
  .header-right { justify-content: space-between; }
  .autosave-badge { font-size: 12px; }

  /* Stepper: compact */
  .stepper { padding: 0 8px; }
  .step { padding: 10px 10px; font-size: 14px; }
  .step-num { width: 24px; height: 24px; font-size: 12px; }
  .role-badge { display: none; }

  /* Main */
  .main { padding: 12px; }
  .card { padding: 16px; margin-bottom: 14px; }
  .card-title { font-size: 19px; }

  /* Grid: 1 column */
  .data-grid { grid-template-columns: 1fr; }
  .export-grid { grid-template-columns: 1fr; }

  /* Inputs: larger touch targets */
  input, select { padding: 12px 14px; font-size: 18px; min-height: 48px; }
  input[type="number"] { width: 100px; }
  input[type="checkbox"] { width: 24px; height: 24px; }
  input[type="range"] { height: 32px; }

  /* Buttons: full width, min 48px */
  .btn { padding: 14px 20px; font-size: 18px; min-height: 48px; }
  .btn-sm { padding: 10px 14px; font-size: 16px; min-height: 44px; }
  .footer-nav { flex-direction: column; gap: 10px; }
  .footer-nav .btn { width: 100%; }
  .footer-nav > div { display: flex; flex-direction: column; gap: 8px; width: 100%; }
  .footer-nav > div .btn { width: 100%; }

  /* Supplier card */
  .supplier-card { padding: 14px; }
  .supplier-header { flex-direction: column; align-items: flex-start; gap: 10px; }

  /* Weight bar */
  .weight-segment { font-size: 11px; }

  /* Rank cards */
  .rank-card { flex-wrap: wrap; padding: 14px; }
  .rank-score { font-size: 22px; width: 100%; text-align: right; margin-top: 8px; }

  /* Cost compare: stack */
  .cost-compare { flex-direction: column; }
  .cost-arrow { transform: rotate(90deg); }
  .cost-box .amount { font-size: 32px; }

  /* Mini summary: 1 column */
  .mini-summary { flex-direction: column; }
  .mini-card { min-width: 100%; }

  /* Tables: horizontal scroll */
  .table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Stat cards: stack */
  .stat-cards { flex-direction: column; }

  /* Checklist: larger */
  .checklist-item { padding: 12px 0; gap: 14px; }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .header, .stepper, .footer-nav, .btn, .autosave-badge { display: none !important; }
  .view { display: block !important; }
  .main { max-width: 100%; padding: 0; }
  .card { box-shadow: none; border: 1px solid #ccc; page-break-inside: avoid; }
  body { font-size: 14px; }
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Focus visible for keyboard users */
:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
}