/* ============================================================
 * calc-demand-letter-roi.css
 *
 * Page-specific styles for /Calcs/demand-letter-roi-calculator/.
 * Loaded with /shared/firm.css and cta-calc-result.css. Drop-in
 * for the vanilla rewrite of the prior React calc.
 * ============================================================ */

:root {
  --dlr-primary: #2563eb;
  --dlr-primary-dark: #1d4ed8;
  --dlr-success: #10b981;
  --dlr-warning: #f59e0b;
  --dlr-danger: #ef4444;
  --dlr-text: #1a1a2e;
  --dlr-text-secondary: #6b7280;
  --dlr-text-muted: #9ca3af;
  --dlr-bg: #f6f8fa;
  --dlr-card: #ffffff;
  --dlr-border: #e5e7eb;
  --dlr-accent: #0e7490;
  --dlr-radius-sm: 6px;
  --dlr-radius-md: 8px;
  --dlr-radius-lg: 12px;
}

/* ---------- Calcs nav bar (shared shape) ---------- */
.calcs-nav {
  position: sticky; top: 0; z-index: 1000;
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  padding: 10px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.calcs-brand {
  display: flex; align-items: center; gap: 8px;
  color: #fff; text-decoration: none; font-weight: 700;
  font-size: 16px; white-space: nowrap;
}
.calcs-brand:hover { opacity: 0.9; }
.calcs-links { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.calcs-links a {
  color: #fff; text-decoration: none; font-size: 12px; font-weight: 500;
  padding: 5px 10px; background: rgba(255, 255, 255, 0.15);
  border-radius: 4px; transition: background 0.2s; white-space: nowrap;
}
.calcs-links a:hover { background: rgba(255, 255, 255, 0.25); }
.calcs-links a.active { background: #fff; color: #1e40af; }
.calcs-divider { width: 1px; height: 16px; background: rgba(255, 255, 255, 0.3); margin: 0 4px; }

/* ---------- Page header ---------- */
.page-header {
  background: linear-gradient(135deg, #1a1a2e 0%, #1e293b 50%, #312e81 100%);
  color: #fff; padding: 24px; text-align: center;
}
.page-header h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; line-height: 1.2; }
.page-header .subtitle { font-size: 16px; opacity: 0.9; margin-bottom: 12px; max-width: 760px; margin-left: auto; margin-right: auto; }
.header-meta { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; font-size: 13px; opacity: 0.85; }
.header-meta span, .header-meta a { display: inline-flex; align-items: center; gap: 4px; }
.header-meta a { color: inherit; text-decoration: none; }
.header-meta a:hover { text-decoration: underline; }

/* ---------- Calculator section ---------- */
.calculator-section { background: var(--dlr-card); padding: 24px; border-bottom: 1px solid var(--dlr-border); }
.calculator-container { max-width: 1400px; margin: 0 auto; }
.calculator-layout { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 1024px) { .calculator-layout { grid-template-columns: minmax(380px, 460px) 1fr; } }

/* ---------- Input panel ---------- */
.input-panel { background: var(--dlr-bg); border-radius: var(--dlr-radius-md); padding: 24px; }
.panel-title { font-size: 18px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 8px; }
.panel-title svg { color: var(--dlr-primary); flex-shrink: 0; }
.form-section { margin-bottom: 24px; }
.form-section-title {
  font-size: 13px; font-weight: 700; color: var(--dlr-text-secondary);
  text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px;
  padding-bottom: 8px; border-bottom: 1px solid var(--dlr-border);
}
.form-group { margin-bottom: 16px; }
.form-group label {
  display: flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; color: var(--dlr-text); margin-bottom: 6px;
}
.form-group input, .form-group select {
  width: 100%; padding: 12px 14px;
  font-size: 16px; /* iOS zoom prevention */
  font-family: inherit;
  border: 1px solid var(--dlr-border); border-radius: var(--dlr-radius-sm);
  background: #fff; transition: border-color 0.15s, box-shadow 0.15s;
  min-height: 44px; box-sizing: border-box;
}
.form-group input:focus, .form-group select:focus {
  outline: none; border-color: var(--dlr-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.help-tip {
  display: inline-flex; align-items: center; justify-content: center;
  width: 18px; height: 18px; background: var(--dlr-primary); color: #fff;
  border-radius: 50%; font-size: 11px; font-weight: 600; cursor: help; position: relative;
}
.help-tip:hover::after, .help-tip:focus::after {
  content: attr(data-tip); position: absolute; bottom: 100%; left: 50%;
  transform: translateX(-50%); background: #1a1a2e; color: #fff;
  padding: 8px 12px; border-radius: 6px; font-size: 12px; font-weight: 400;
  white-space: normal; max-width: 250px; z-index: 100; margin-bottom: 6px;
  line-height: 1.4;
}

.calculate-btn {
  width: 100%; padding: 14px 24px; font-size: 16px; font-weight: 600; color: #fff;
  background: linear-gradient(135deg, var(--dlr-primary) 0%, var(--dlr-accent) 100%);
  border: 0; border-radius: var(--dlr-radius-sm); cursor: pointer;
  transition: all 0.2s; margin-top: 8px; min-height: 44px;
  font-family: inherit;
}
.calculate-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3); }

/* ---------- Results panel ---------- */
.results-panel {
  background: var(--dlr-card); border: 1px solid var(--dlr-border);
  border-radius: var(--dlr-radius-md); overflow: hidden;
}
.results-header { background: var(--dlr-bg); padding: 16px 20px; border-bottom: 1px solid var(--dlr-border); }
.results-header h3 { font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 6px; margin: 0; }
.results-content { padding: 20px; }

.results-empty {
  text-align: center; padding: 40px 20px; color: var(--dlr-text-muted);
}
.results-empty svg { opacity: 0.5; margin-bottom: 16px; }

/* ---------- Winner banner ---------- */
.winner-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: var(--dlr-radius-md); padding: 24px; text-align: center;
  margin-bottom: 20px; color: #fff; position: relative; overflow: hidden;
}
.winner-banner::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(45deg, transparent 40%, rgba(16, 185, 129, 0.15) 50%, transparent 60%);
  animation: bannerShine 3s ease-in-out infinite;
}
@keyframes bannerShine { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.winner-banner .banner-label {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 1px;
  color: rgba(255,255,255,0.7); margin-bottom: 6px; position: relative;
}
.winner-banner .banner-title { font-size: 24px; font-weight: 800; margin-bottom: 8px; position: relative; }
.winner-banner .banner-subtitle { font-size: 13px; opacity: 0.85; position: relative; }

/* ---------- Summary cards ---------- */
.results-summary {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-bottom: 20px;
}
@media (min-width: 600px) { .results-summary { grid-template-columns: repeat(4, 1fr); } }
.result-card {
  background: var(--dlr-bg); border: 1px solid var(--dlr-border);
  border-radius: var(--dlr-radius-sm); padding: 14px;
}
.result-card .label { font-size: 11px; color: var(--dlr-text-secondary); text-transform: uppercase; letter-spacing: 0.3px; margin-bottom: 4px; font-weight: 600; }
.result-card .value { font-size: 18px; font-weight: 700; color: var(--dlr-text); }

/* ---------- Path comparison ---------- */
.paths-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 20px; }
@media (min-width: 600px) { .paths-grid { grid-template-columns: repeat(2, 1fr); } }

.path-card {
  background: var(--dlr-bg); border: 2px solid var(--dlr-border);
  border-radius: var(--dlr-radius-md); padding: 20px; position: relative;
  transition: all 0.2s;
}
.path-card.recommended {
  border-color: var(--dlr-success);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(16, 185, 129, 0.02));
}
.path-card-badge {
  position: absolute; top: -10px; right: 16px;
  background: var(--dlr-success); color: #fff;
  font-size: 11px; font-weight: 700; padding: 3px 12px;
  border-radius: 10px; text-transform: uppercase; letter-spacing: 0.5px;
}
.path-card-header { margin-bottom: 16px; }
.path-card-header h4 { font-size: 16px; font-weight: 700; color: var(--dlr-text); margin-bottom: 2px; }
.path-card-header .path-cost-range { font-size: 13px; color: var(--dlr-text-muted); }
.path-stat { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--dlr-border); }
.path-stat:last-of-type { border-bottom: 0; }
.path-stat-label { font-size: 13px; color: var(--dlr-text-secondary); }
.path-stat-value { font-size: 14px; font-weight: 700; text-align: right; }
.path-stat-value.positive { color: var(--dlr-success); }
.path-stat-value.negative { color: var(--dlr-danger); }
.path-stat-value.neutral  { color: var(--dlr-text); }

.path-roi-bar { margin-top: 12px; }
.roi-bar-track { width: 100%; height: 8px; background: #e2e8f0; border-radius: 4px; overflow: hidden; }
.roi-bar-fill { height: 100%; border-radius: 4px; transition: width 0.6s ease; min-width: 2px; }
.roi-bar-label { font-size: 11px; color: var(--dlr-text-muted); margin-top: 4px; text-align: right; }

/* ---------- Info callout ---------- */
.info-callout {
  display: flex; gap: 10px; align-items: flex-start;
  padding: 14px 16px; border-radius: var(--dlr-radius-sm);
  background: #ecfdf5; border-left: 4px solid var(--dlr-success);
  margin-bottom: 20px; font-size: 13px; color: var(--dlr-text); line-height: 1.55;
}
.info-callout svg { flex-shrink: 0; color: var(--dlr-success); margin-top: 2px; }

/* ---------- Chart ---------- */
.chart-container {
  background: var(--dlr-bg); border-radius: var(--dlr-radius-md);
  padding: 16px; margin-bottom: 20px;
}
.chart-title {
  display: flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 700; color: var(--dlr-text); margin-bottom: 10px;
}
.chart-container canvas { max-width: 100%; height: auto; }

/* ---------- CTA blocks ---------- */
.results-cta {
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%);
  border: 1px solid #86efac; border-radius: var(--dlr-radius-md);
  padding: 20px; margin-bottom: 14px; text-align: center;
}
.results-cta h4 { font-size: 16px; font-weight: 700; margin-bottom: 6px; color: #14532d; }
.results-cta p { font-size: 13px; color: #166534; margin-bottom: 12px; }
.results-cta-btn {
  display: inline-block; padding: 12px 22px;
  background: var(--dlr-success); color: #fff;
  font-weight: 700; font-size: 14px; border-radius: var(--dlr-radius-sm);
  text-decoration: none; min-height: 44px; line-height: 20px;
  border: 0; cursor: pointer; font-family: inherit;
}
.results-cta-btn:hover { background: #059669; }

.cta-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--dlr-primary); font-weight: 600; font-size: 13px;
  text-decoration: none;
}
.cta-link:hover { text-decoration: underline; }

.disclaimer {
  margin-top: 16px; padding: 12px 14px;
  background: var(--dlr-bg); border-radius: var(--dlr-radius-sm);
  font-size: 12px; color: var(--dlr-text-secondary); line-height: 1.5;
}

.pdf-export-btn {
  display: inline-flex; align-items: center; gap: 6px;
  width: 100%; justify-content: center;
  padding: 11px 16px; font-size: 13px; font-weight: 600; color: #fff;
  background: var(--dlr-primary); border: 0; border-radius: var(--dlr-radius-sm);
  cursor: pointer; min-height: 44px; margin-top: 12px;
  font-family: inherit;
}
.pdf-export-btn:hover { background: var(--dlr-primary-dark); }

/* ---------- Content tabs section ---------- */
.content-tabs-section { background: var(--dlr-card); padding: 24px; }
.content-tabs-nav {
  display: flex; gap: 4px; flex-wrap: wrap;
  border-bottom: 1px solid var(--dlr-border); margin-bottom: 20px;
  max-width: 1100px; margin-left: auto; margin-right: auto;
}
.content-tab-btn {
  background: transparent; border: 0;
  padding: 10px 14px; font-size: 13px; font-weight: 600;
  color: var(--dlr-text-secondary); cursor: pointer;
  border-bottom: 2px solid transparent; min-height: 44px;
  font-family: inherit;
}
.content-tab-btn:hover { color: var(--dlr-primary); }
.content-tab-btn.active { color: var(--dlr-primary); border-bottom-color: var(--dlr-primary); }
.content-tab-panel { display: none; max-width: 1100px; margin: 0 auto; font-size: 14px; color: var(--dlr-text); }
.content-tab-panel.active { display: block; }
.content-tab-panel h2 { font-size: 22px; margin-bottom: 12px; }
.content-tab-panel h3 { font-size: 16px; margin: 16px 0 8px; }
.content-tab-panel p { margin-bottom: 10px; line-height: 1.6; }
.content-tab-panel ul { margin: 8px 0 12px 22px; }
.content-tab-panel li { margin-bottom: 4px; line-height: 1.55; }
.content-tab-panel a { color: var(--dlr-primary); text-decoration: none; font-weight: 600; }
.content-tab-panel a:hover { text-decoration: underline; }

.mobile-accordion { display: none; max-width: 1100px; margin: 0 auto; }
.accordion-item { border-bottom: 1px solid var(--dlr-border); }
.accordion-trigger {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; padding: 14px 4px;
  background: transparent; border: 0; cursor: pointer; text-align: left;
  font-size: 15px; font-weight: 700; color: var(--dlr-text);
  min-height: 44px; font-family: inherit;
}
.accordion-chevron { width: 20px; height: 20px; color: var(--dlr-primary); flex-shrink: 0; }
.accordion-content { padding: 4px 4px 14px; font-size: 14px; color: var(--dlr-text); }

/* ---------- FAQ section ---------- */
.faq-list { display: flex; flex-direction: column; gap: 4px; }
.faq-group-title {
  font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--dlr-text-secondary); font-weight: 700;
  margin: 18px 0 6px;
}
.faq-item { border-bottom: 1px solid var(--dlr-border); }
.faq-trigger {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  width: 100%; padding: 12px 0; border: 0; background: transparent;
  cursor: pointer; text-align: left; font-family: inherit;
  font-size: 14px; font-weight: 600; color: var(--dlr-text);
  min-height: 44px;
}
.faq-trigger h4 { font-size: 14px; font-weight: 600; margin: 0; }
.faq-chevron { width: 18px; height: 18px; color: var(--dlr-text-muted); transition: transform 0.15s; flex-shrink: 0; }
.faq-trigger[aria-expanded="true"] .faq-chevron { transform: rotate(180deg); }
.faq-answer { padding: 0 0 14px; font-size: 13px; line-height: 1.6; color: var(--dlr-text-secondary); }
.faq-answer[hidden] { display: none; }

/* ---------- Mobile responsive ---------- */
@media (max-width: 600px) {
  .calculator-section { padding: 16px 12px; }
  .page-header { padding: 22px 16px; }
  .page-header h1 { font-size: 22px; }
  .input-panel { padding: 16px; }
  .results-content { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .content-tabs-nav { display: none; }
  .mobile-accordion { display: block; }
  .content-tab-panel { display: none !important; }
  .winner-banner .banner-title { font-size: 20px; }
  .paths-grid { grid-template-columns: 1fr; }
}

.dlr-text-button {
  border: 0; background: transparent; padding: 0;
  font: inherit; color: var(--dlr-primary); cursor: pointer;
  text-decoration: underline;
}
.dlr-text-button:hover { color: var(--dlr-primary-dark); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }