:root {
  --color-bg: #f3f5f7;
  --color-bg-secondary: #eceff3;
  --color-surface: #ffffff;
  --color-surface-secondary: #f8fafb;
  --color-text: #10161c;
  --color-text-secondary: #5f6b77;
  --color-border: #d9e0e7;
  --color-border-strong: #c8d1db;
  --color-red: #c3192d;
  --color-red-dark: #971423;
  --color-red-soft: #fdecef;
  --color-green: #177a4c;
  --color-green-soft: #e7f5ed;
  --color-amber: #b9770e;
  --color-amber-soft: #fff4df;
  --color-error: #c12737;
  --color-error-soft: #fdebee;
  --shadow-soft: 0 10px 28px rgba(16, 22, 28, 0.05);
  --radius-lg: 26px;
  --container: 1380px;
  --transition: 180ms ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, Arial, Helvetica, sans-serif; background: linear-gradient(180deg, #f4f6f8 0%, #eef1f4 100%); color: var(--color-text); }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; }
.container { width: min(calc(100% - 40px), var(--container)); margin: 0 auto; }
.hidden { display: none !important; }
.app-header { padding: 22px 0 16px; background: #ffffff; border-bottom: 1px solid rgba(16, 22, 28, 0.06); position: sticky; top: 0; z-index: 30; }
.header-content { display: flex; align-items: center; }
.brand-row { display: flex; align-items: center; gap: 18px; }
.brand-logo { width: 170px; height: auto; flex: 0 0 auto; }
.brand-copy h1 { margin: 0; font-size: clamp(1.75rem, 2vw, 2.2rem); line-height: 1.05; letter-spacing: -0.03em; }
.brand-copy p { margin: 8px 0 0; color: var(--color-text-secondary); max-width: 860px; font-size: 1rem; line-height: 1.55; }
.main-content { padding: 24px 0 40px; }
.wizard-shell { display: grid; gap: 18px; }
.wizard-progress { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.progress-step { border: 1px solid var(--color-border); background: rgba(255, 255, 255, 0.8); border-radius: 18px; padding: 12px 14px; display: grid; gap: 4px; text-align: left; color: var(--color-text-secondary); }
.progress-step span { font-size: 0.76rem; font-weight: 800; letter-spacing: 0.08em; }
.progress-step strong { font-size: 0.95rem; }
.progress-step.is-active { border-color: rgba(195, 25, 45, 0.28); background: linear-gradient(180deg, #ffffff 0%, #fff5f6 100%); color: var(--color-text); box-shadow: var(--shadow-soft); }
.section-card, .result-hero, .print-report, .preliminary-panel, .requirements-panel { background: var(--color-surface); border: 1px solid rgba(16, 22, 28, 0.05); border-radius: var(--radius-lg); box-shadow: var(--shadow-soft); }
.section-card, .result-hero, .print-report { padding: 26px; }
.preliminary-panel, .requirements-panel { margin-top: 22px; padding: 22px; }
.section-heading { display: flex; align-items: flex-start; gap: 18px; margin-bottom: 22px; }
.section-step { width: 62px; min-width: 62px; height: 62px; display: inline-grid; place-items: center; border-radius: 20px; background: linear-gradient(180deg, var(--color-red) 0%, var(--color-red-dark) 100%); color: #ffffff; font-weight: 800; font-size: 1.1rem; }
.section-heading h2, .result-panel h3, .print-report h3, .result-hero h2, .report-header h2, .preliminary-head h3, .requirements-copy h3 { margin: 0; }
.section-heading p, .result-hero p, .report-header p, .checkbox-panel p, .report-summary, .report-observations, .requirements-copy p, .preliminary-head p { color: var(--color-text-secondary); }
.section-heading p, .requirements-copy p { margin: 8px 0 0; }
.form-grid, .question-grid, .metrics-grid, .results-grid, .report-grid, .two-columns, .systems-grid, .requirements-grid { display: grid; gap: 18px; }
.form-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-grid-2, .results-grid, .two-columns { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.question-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.conditioning-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.systems-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.requirements-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-field, .question-card, .checkbox-panel { display: grid; gap: 10px; }
.form-field-full { grid-column: 1 / -1; }
.form-field-span-2 { grid-column: span 2; }
label { font-weight: 700; font-size: 0.95rem; }
.system-field label { font-size: 0.84rem; letter-spacing: 0.04em; text-transform: uppercase; }
input, select, textarea { width: 100%; min-height: 52px; padding: 13px 16px; border: 1px solid var(--color-border-strong); border-radius: 18px; background: #ffffff; color: var(--color-text); transition: border-color var(--transition), box-shadow var(--transition), background var(--transition); }
textarea { resize: vertical; min-height: 180px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: rgba(195, 25, 45, 0.55); box-shadow: 0 0 0 4px rgba(195, 25, 45, 0.08); }
input.invalid, select.invalid, textarea.invalid { border-color: var(--color-error); box-shadow: 0 0 0 4px rgba(193, 39, 55, 0.08); }
.question-card, .requirement-card, .preliminary-subpanel { padding: 18px; border: 1px solid var(--color-border); border-radius: 20px; background: linear-gradient(180deg, #ffffff 0%, #fbfcfd 100%); }
.requirement-card small, .metric-card small, .report-item span, .report-status-label { display: block; color: var(--color-text-secondary); }
.requirement-card strong { font-size: 0.98rem; line-height: 1.45; }
.panel-kicker, .report-kicker { display: inline-flex; align-items: center; min-height: 34px; padding: 0 14px; border-radius: 999px; background: var(--color-red-soft); color: var(--color-red-dark); font-size: 0.8rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; }
.total-bar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 16px 18px; margin-top: 8px; border: 1px solid rgba(195, 25, 45, 0.14); border-radius: 20px; background: linear-gradient(180deg, #fff7f8 0%, #ffffff 100%); }
.total-bar span { font-size: 0.84rem; letter-spacing: 0.08em; font-weight: 800; color: var(--color-red-dark); }
.total-bar strong { font-size: 1.2rem; letter-spacing: -0.02em; }
.checkbox-panel { align-content: start; padding: 20px; border: 1px solid rgba(195, 25, 45, 0.14); border-radius: 22px; background: linear-gradient(180deg, #fff7f8 0%, #ffffff 100%); }
.checkbox-row { display: flex; align-items: center; gap: 12px; font-weight: 800; }
.checkbox-row input { width: 18px; height: 18px; min-height: 18px; accent-color: var(--color-red); }
.preliminary-head, .result-topline, .panel-header-row, .report-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; flex-wrap: wrap; }
.metrics-grid, .metrics-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.metric-card { padding: 18px; border: 1px solid var(--color-border); border-radius: 20px; background: var(--color-surface-secondary); }
.metric-card strong { font-size: 1.05rem; }
.compact-list { margin-top: 12px; }
.step-actions, .result-actions { display: flex; justify-content: flex-end; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.btn { min-height: 50px; padding: 0 22px; border-radius: 999px; font-weight: 800; border: 1px solid transparent; cursor: pointer; transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition), background var(--transition), border-color var(--transition); }
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: linear-gradient(180deg, var(--color-red) 0%, var(--color-red-dark) 100%); color: #ffffff; box-shadow: 0 12px 24px rgba(195, 25, 45, 0.18); }
.btn-secondary { background: #edf1f5; color: var(--color-text); }
.form-message { margin-top: 14px; min-height: 24px; color: var(--color-error); font-weight: 700; }
.results-shell { display: grid; gap: 18px; }
.status-badge { display: inline-flex; align-items: center; gap: 10px; min-height: 40px; padding: 0 16px; border-radius: 999px; font-weight: 800; }
.status-viable { color: var(--color-green); background: var(--color-green-soft); }
.status-condicionado { color: var(--color-amber); background: var(--color-amber-soft); }
.status-no-viable { color: var(--color-error); background: var(--color-error-soft); }
.status-pending { color: var(--color-text-secondary); background: #eff3f6; }
.result-list { margin: 14px 0 0; padding-left: 18px; color: var(--color-text-secondary); line-height: 1.6; }
.economic-classification { padding: 8px 12px; border-radius: 999px; background: #f2f5f8; font-weight: 800; }
.recommendation-text { margin: 14px 0 0; line-height: 1.7; }
.report-brand { display: flex; align-items: center; gap: 18px; }
.report-logo { width: 150px; flex: 0 0 auto; }
.report-status-box { min-width: 230px; padding: 18px; border: 1px solid var(--color-border); border-radius: 20px; background: var(--color-surface-secondary); }
.report-status-box strong { display: block; font-size: 1.2rem; }
.report-status-box small { display: block; margin-top: 8px; color: var(--color-text-secondary); }
.report-block { margin-top: 24px; }
.report-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.report-grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.report-item, .report-table-row, .report-summary, .report-observations { border: 1px solid var(--color-border); border-radius: 18px; background: #fbfcfd; }
.report-item { padding: 14px; }
.report-item span { margin-bottom: 6px; font-size: 0.88rem; }
.report-summary, .report-observations { padding: 16px; line-height: 1.65; }
.report-summary.compact { margin-bottom: 12px; }
.report-table { display: grid; gap: 10px; }
.report-table-row { display: flex; justify-content: space-between; gap: 16px; padding: 13px 14px; }
.report-table-row span:first-child { color: var(--color-text-secondary); }
.no-data { color: var(--color-text-secondary); font-style: italic; }
@media (max-width: 1120px) {
  .form-grid-3, .report-grid, .report-grid-5, .metrics-grid, .metrics-grid-4, .systems-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .conditioning-grid, .requirements-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .app-header { position: static; }
  .brand-row, .report-brand { flex-direction: column; align-items: flex-start; }
  .wizard-progress, .form-grid-3, .form-grid-2, .question-grid, .results-grid, .two-columns, .metrics-grid, .metrics-grid-4, .report-grid, .report-grid-5, .conditioning-grid, .systems-grid, .requirements-grid { grid-template-columns: 1fr; }
  .section-card, .result-hero, .print-report, .preliminary-panel, .requirements-panel { padding: 20px; }
  .section-heading { flex-direction: column; }
  .section-step { width: 56px; min-width: 56px; height: 56px; }
  .step-actions, .result-actions { justify-content: stretch; }
  .btn { width: 100%; }
  .form-field-span-2 { grid-column: auto; }
  .total-bar { flex-direction: column; align-items: flex-start; }
}
@media print {
  body { background: #ffffff; }
  .no-print, .app-header { display: none !important; }
  .main-content { padding: 0; }
  .results-shell { display: block; }
  .result-hero, .section-card, .print-report, .preliminary-panel, .requirements-panel { box-shadow: none; border: 1px solid #d5dbe2; break-inside: avoid; }
  .print-report { margin-top: 16px; }
}