/* Gold Standard TPDDTEC v4.0 - Monitoring Report Tool */

:root {
  --gs-teal: #00B0B9;
  --gs-teal-dark: #008a92;
  --gs-teal-light: #e6f8f9;
  --gs-gold: #F0A500;
  --gs-dark: #1a2b3c;
  --gs-gray: #6c757d;
  --gs-light: #f8f9fa;
  --gs-border: #dee2e6;
  --gs-success: #28a745;
  --gs-danger: #dc3545;
  --gs-warning: #ffc107;
  --radius: 8px;
  --shadow: 0 2px 8px rgba(0,0,0,0.10);
  --shadow-lg: 0 4px 20px rgba(0,0,0,0.13);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: #f0f4f7;
  color: var(--gs-dark);
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────── */
header {
  background: var(--gs-dark);
  color: white;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo {
  width: 32px;
  height: 32px;
  background: var(--gs-teal);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.5px;
}

.header-title {
  font-size: 16px;
  font-weight: 600;
}

.header-subtitle {
  font-size: 12px;
  color: rgba(255,255,255,0.55);
}

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

.btn-header {
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.8);
  border: 1px solid rgba(255,255,255,0.15);
  padding: 6px 14px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.15s;
}

.btn-header:hover {
  background: rgba(255,255,255,0.15);
  color: white;
}

.btn-header.danger:hover {
  background: rgba(220,53,69,0.5);
  border-color: var(--gs-danger);
  color: white;
}

/* ── Layout ─────────────────────────────────────────────── */
.app-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 16px 60px;
}

/* ── Stepper ─────────────────────────────────────────────── */
.stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  gap: 0;
}

.step-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  cursor: default;
  position: relative;
}

.step-indicator:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 17px;
  left: calc(50% + 20px);
  width: calc(100% - 10px);
  height: 2px;
  background: var(--gs-border);
  z-index: 0;
}

.step-indicator.completed:not(:last-child)::after {
  background: var(--gs-teal);
}

.step-num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gs-border);
  color: var(--gs-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  position: relative;
  z-index: 1;
  transition: all 0.2s;
}

.step-indicator.active .step-num {
  background: var(--gs-teal);
  color: white;
  box-shadow: 0 0 0 3px rgba(0,176,185,0.22);
}

.step-indicator.completed .step-num {
  background: var(--gs-teal-dark);
  color: white;
}

.step-label {
  font-size: 11px;
  color: var(--gs-gray);
  font-weight: 500;
  white-space: nowrap;
}

.step-indicator.active .step-label { color: var(--gs-teal-dark); font-weight: 700; }
.step-indicator.completed .step-label { color: var(--gs-teal-dark); }

.stepper-spacer { flex: 1; max-width: 48px; height: 2px; background: var(--gs-border); margin-bottom: 19px; }
.stepper-spacer.done { background: var(--gs-teal); }

/* ── Card ─────────────────────────────────────────────────── */
.card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 32px;
  margin-bottom: 20px;
}

.card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--gs-dark);
  margin-bottom: 6px;
}

.card-subtitle {
  font-size: 13px;
  color: var(--gs-gray);
  margin-bottom: 24px;
  line-height: 1.5;
}

.section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--gs-teal-dark);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin: 24px 0 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gs-teal-light);
}

.section-title:first-child { margin-top: 0; }

/* ── Form ─────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}

.form-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-grid.cols-1 { grid-template-columns: 1fr; }
.form-full { grid-column: 1 / -1; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

label {
  font-size: 13px;
  font-weight: 600;
  color: #3a4a5c;
}

label .hint {
  font-weight: 400;
  color: var(--gs-gray);
  font-size: 12px;
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
  padding: 8px 12px;
  border: 1.5px solid var(--gs-border);
  border-radius: 6px;
  font-size: 14px;
  color: var(--gs-dark);
  background: white;
  transition: border-color 0.15s, box-shadow 0.15s;
  font-family: inherit;
  width: 100%;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--gs-teal);
  box-shadow: 0 0 0 3px rgba(0,176,185,0.12);
}

input.invalid, select.invalid { border-color: var(--gs-danger); }

input[readonly] { background: var(--gs-light); color: var(--gs-gray); }

textarea { resize: vertical; min-height: 80px; }

.input-group {
  display: flex;
  align-items: center;
}

.input-group input { border-radius: 6px 0 0 6px; }

.input-addon {
  padding: 8px 12px;
  background: var(--gs-light);
  border: 1.5px solid var(--gs-border);
  border-left: none;
  border-radius: 0 6px 6px 0;
  font-size: 13px;
  color: var(--gs-gray);
  white-space: nowrap;
}

/* ── Radio / Checkbox ─────────────────────────────────────── */
.radio-group, .check-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.radio-group.horizontal {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px;
}

.radio-label, .check-label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 400;
  color: var(--gs-dark);
}

.radio-label input, .check-label input {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--gs-teal);
}

/* ── Method buttons ─────────────────────────────────────────── */
.method-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 20px;
}

.method-btn {
  border: 2px solid var(--gs-border);
  border-radius: var(--radius);
  padding: 16px 14px;
  cursor: pointer;
  background: white;
  text-align: left;
  transition: all 0.15s;
}

.method-btn:hover {
  border-color: var(--gs-teal);
  background: var(--gs-teal-light);
}

.method-btn.active {
  border-color: var(--gs-teal);
  background: var(--gs-teal-light);
  box-shadow: 0 0 0 3px rgba(0,176,185,0.15);
}

.method-btn .method-num {
  display: inline-block;
  background: var(--gs-teal);
  color: white;
  border-radius: 50%;
  width: 26px;
  height: 26px;
  line-height: 26px;
  text-align: center;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 8px;
}

.method-btn.active .method-num { background: var(--gs-teal-dark); }

.method-btn .method-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--gs-dark);
  margin-bottom: 4px;
}

.method-btn .method-desc {
  font-size: 12px;
  color: var(--gs-gray);
  line-height: 1.4;
}

/* ── Scenario cards ─────────────────────────────────────────── */
.scenario-list { display: flex; flex-direction: column; gap: 16px; }

.scenario-card {
  border: 1.5px solid var(--gs-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.scenario-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--gs-light);
  border-bottom: 1.5px solid var(--gs-border);
  cursor: pointer;
  user-select: none;
}

.scenario-card-header:hover { background: #edf0f3; }

.scenario-title { font-weight: 700; font-size: 14px; color: var(--gs-dark); }

.scenario-preview {
  font-size: 12px;
  color: var(--gs-teal-dark);
  font-weight: 600;
}

.scenario-card-body { padding: 18px; }

.scenario-er-preview {
  background: var(--gs-teal-light);
  border: 1px solid rgba(0,176,185,0.3);
  border-radius: 6px;
  padding: 10px 14px;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--gs-teal-dark);
  font-weight: 600;
}

.scenario-card.collapsed .scenario-card-body { display: none; }

.btn-remove-scenario {
  background: none;
  border: 1px solid var(--gs-danger);
  color: var(--gs-danger);
  border-radius: 5px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-remove-scenario:hover { background: var(--gs-danger); color: white; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--gs-teal);
  color: white;
  border-color: var(--gs-teal);
}

.btn-primary:hover { background: var(--gs-teal-dark); border-color: var(--gs-teal-dark); }

.btn-outline {
  background: transparent;
  color: var(--gs-teal);
  border-color: var(--gs-teal);
}

.btn-outline:hover { background: var(--gs-teal-light); }

.btn-secondary {
  background: var(--gs-light);
  color: var(--gs-dark);
  border-color: var(--gs-border);
}

.btn-secondary:hover { background: #e9ecef; }

.btn-success {
  background: var(--gs-success);
  color: white;
  border-color: var(--gs-success);
}

.btn-success:hover { background: #218838; border-color: #218838; }

.btn-lg { padding: 12px 28px; font-size: 16px; }

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Navigation ─────────────────────────────────────────────── */
.nav-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--gs-border);
}

/* ── Error / Alert ─────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 16px;
}

.alert-danger {
  background: #fdf2f2;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

.alert-warning {
  background: #fffcf0;
  border: 1px solid #ffd88a;
  color: #856404;
}

.alert-info {
  background: var(--gs-teal-light);
  border: 1px solid rgba(0,176,185,0.3);
  color: var(--gs-teal-dark);
}

.alert-success {
  background: #f2fbf4;
  border: 1px solid #b8e7c3;
  color: #155724;
}

.alert ul { margin: 6px 0 0 16px; }
.alert ul li { margin-bottom: 2px; }

/* ── Results ─────────────────────────────────────────────────── */
.results-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}

.result-card {
  background: var(--gs-light);
  border: 1.5px solid var(--gs-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.result-card.primary {
  background: var(--gs-teal-light);
  border-color: var(--gs-teal);
}

.result-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--gs-dark);
  line-height: 1.1;
}

.result-card.primary .result-value { color: var(--gs-teal-dark); }

.result-unit { font-size: 11px; color: var(--gs-gray); font-weight: 600; }
.result-label { font-size: 12px; color: var(--gs-gray); margin-top: 4px; }

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.results-table th {
  background: var(--gs-dark);
  color: white;
  padding: 10px 12px;
  text-align: left;
  font-size: 12px;
}

.results-table td {
  padding: 9px 12px;
  border-bottom: 1px solid var(--gs-border);
}

.results-table tr:nth-child(even) td { background: var(--gs-light); }

.results-table .num { text-align: right; font-family: 'Courier New', monospace; }

/* ── Info box ─────────────────────────────────────────────────── */
.info-box {
  background: var(--gs-teal-light);
  border-left: 4px solid var(--gs-teal);
  border-radius: 0 6px 6px 0;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--gs-teal-dark);
  margin-bottom: 16px;
}

.info-box strong { font-weight: 700; }

.formula-box {
  background: #1a2b3c;
  color: #a8d8ff;
  border-radius: 6px;
  padding: 14px 18px;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  margin: 12px 0;
  line-height: 1.6;
}

/* ── Default params table ─────────────────────────────────────── */
.params-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-bottom: 8px;
}

.params-table th {
  background: var(--gs-teal);
  color: white;
  padding: 9px 12px;
  text-align: left;
  font-size: 12px;
}

.params-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--gs-border);
}

.params-table tr:nth-child(even) td { background: var(--gs-light); }

/* ── Step sections ─────────────────────────────────────────────── */
.step-content { display: none; }
.step-content.active { display: block; }

/* ── Tags / badges ─────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 700;
}

.badge-teal { background: var(--gs-teal-light); color: var(--gs-teal-dark); }
.badge-gold { background: #fff8e6; color: #856404; }

/* ── Report preview / generate ─────────────────────────────────── */
.report-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.meta-item {
  background: var(--gs-light);
  border-radius: 6px;
  padding: 12px;
}

.meta-item .meta-label { font-size: 11px; color: var(--gs-gray); font-weight: 700; text-transform: uppercase; }
.meta-item .meta-value { font-size: 14px; font-weight: 600; color: var(--gs-dark); margin-top: 2px; }

.generate-section {
  text-align: center;
  padding: 30px 20px;
}

.generate-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.8;
}

.generate-section p {
  font-size: 14px;
  color: var(--gs-gray);
  margin-bottom: 20px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

/* ── Warnings list ─────────────────────────────────────────────── */
.warnings-list {
  margin-top: 16px;
}

.warning-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 12px;
  background: #fffcf0;
  border: 1px solid #ffd88a;
  border-radius: 6px;
  font-size: 13px;
  color: #856404;
  margin-bottom: 6px;
}

.warning-icon { flex-shrink: 0; font-size: 14px; }

/* ── Collapsible ─────────────────────────────────────────────────── */
.collapsible-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--gs-teal);
  font-size: 13px;
  font-weight: 600;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 5px;
}

.collapsible-content { margin-top: 12px; }

/* ── Footer ─────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--gs-gray);
  border-top: 1px solid var(--gs-border);
  margin-top: 40px;
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .form-grid { grid-template-columns: 1fr; }
  .form-grid.cols-3 { grid-template-columns: 1fr 1fr; }
  .method-options { grid-template-columns: 1fr; }
  .results-summary { grid-template-columns: 1fr 1fr; }
  .app-container { padding: 16px 10px 40px; }
  .card { padding: 18px 16px; }
  .stepper { gap: 2px; overflow-x: auto; padding-bottom: 4px; }
  .step-label { display: none; }
  .report-meta-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Toggle row for conditional fields ─────────────────────────── */
.field-row-hidden { display: none; }
.field-row-hidden.visible { display: flex; }

/* ── Dynamic grids used by JS-rendered cards ─────────────────────── */
.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 20px;
  margin-bottom: 14px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px 20px;
  margin-bottom: 14px;
}

@media (max-width: 700px) {
  .form-grid-2 { grid-template-columns: 1fr; }
  .form-grid-3 { grid-template-columns: 1fr 1fr; }
}

/* ── Scenario card JS-rendered styles ─────────────────────────────── */
.scenario-card { margin-bottom: 16px; }

.scenario-card > .scenario-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--gs-light);
  border-bottom: 1.5px solid var(--gs-border);
}

.btn-sm {
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.15s;
}

.btn-danger {
  background: transparent;
  border: 1px solid var(--gs-danger) !important;
  color: var(--gs-danger);
}

.btn-danger:hover { background: var(--gs-danger); color: white; }

.scenario-card .form-group { margin-bottom: 0; }

.scenario-card .form-group label { font-size: 12px; }

.scenario-card .form-group small { font-size: 11px; color: var(--gs-gray); margin-top: 3px; display: block; }

.help-tip {
  display: inline-block;
  width: 16px;
  height: 16px;
  background: var(--gs-gray);
  color: white;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  line-height: 16px;
  cursor: help;
  margin-left: 4px;
  vertical-align: middle;
}

/* ── Live calculation preview ─────────────────────────────────────── */
.live-calc {
  margin-top: 12px;
  background: var(--gs-teal-light);
  border: 1px solid rgba(0,176,185,0.3);
  border-radius: 6px;
  padding: 10px 14px;
}

.live-calc.pending {
  background: var(--gs-light);
  border-color: var(--gs-border);
  color: var(--gs-gray);
  font-size: 12px;
  font-style: italic;
}

.live-calc-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--gs-teal-dark);
  margin-bottom: 6px;
}

.live-calc-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--gs-dark);
  padding: 2px 0;
}

.live-calc-row strong { color: var(--gs-teal-dark); font-size: 15px; }

/* ── Results rendered by JS ────────────────────────────────────────── */
.results-hero {
  background: linear-gradient(135deg, var(--gs-teal) 0%, var(--gs-teal-dark) 100%);
  color: white;
  border-radius: var(--radius);
  padding: 24px 28px;
  text-align: center;
  margin-bottom: 20px;
}

.results-hero-label {
  font-size: 13px;
  opacity: 0.85;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.results-hero-value {
  font-size: 48px;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 4px;
}

.results-hero-unit {
  font-size: 16px;
  opacity: 0.85;
  font-weight: 600;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.results-card {
  background: var(--gs-light);
  border: 1.5px solid var(--gs-border);
  border-radius: var(--radius);
  padding: 14px;
  text-align: center;
}

.rc-label { font-size: 11px; color: var(--gs-gray); font-weight: 700; text-transform: uppercase; margin-bottom: 4px; }
.rc-value { font-size: 22px; font-weight: 800; color: var(--gs-dark); }
.rc-unit { font-size: 11px; color: var(--gs-gray); margin-top: 2px; }

.results-table tfoot td { padding: 9px 12px; font-size: 13px; }
.results-table tfoot tr:last-child td { background: var(--gs-teal-light); color: var(--gs-teal-dark); font-weight: 700; }

.alert-error {
  background: #fdf2f2;
  border: 1px solid #f5c6cb;
  color: #721c24;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 13px;
  margin-bottom: 16px;
}

@media (max-width: 700px) {
  .results-grid { grid-template-columns: 1fr 1fr; }
  .results-hero-value { font-size: 36px; }
}

/* ── Empty state ────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 32px 20px;
  color: var(--gs-gray);
  font-size: 14px;
  border: 2px dashed var(--gs-border);
  border-radius: var(--radius);
}

.empty-state p { margin-bottom: 6px; }

/* ── Report preview box ─────────────────────────────────────────────── */
.report-preview-box {
  background: var(--gs-light);
  border: 1.5px solid var(--gs-border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 20px;
}

.rpb-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--gs-border);
  font-size: 14px;
}

.rpb-row:last-child { border-bottom: none; }
.rpb-row span { color: var(--gs-gray); }
.rpb-row strong { color: var(--gs-dark); }
.rpb-row.highlight strong { color: var(--gs-teal-dark); font-size: 16px; }