/* ── KashVector design tokens (dark mode default) ── */
:root {
  --kv-bg:       #0f172a;
  --kv-card:     #1e293b;
  --kv-card-2:   #273449;
  --kv-text:     #f1f5f9;
  --kv-muted:    #94a3b8;
  --kv-accent:   #38bdf8;
  --kv-accent-h: #0ea5e9;
  --kv-border:   #334155;
  --kv-pass:     #22c55e;
  --kv-fail:     #ef4444;
  --kv-warn:     #f59e0b;
}

/* ── Light mode (Crisp White palette) ── */
html:not(.dark) {
  --kv-bg:     #edf2f7;
  --kv-card:   #d4dce8;
  --kv-card-2: #c5cfe0;
  --kv-text:   #0f172a;
  --kv-muted:  #64748b;
  --kv-border: #e2e8f0;
}

/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--kv-bg);
  color: var(--kv-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── Header ── */
.app-header {
  padding: 20px 16px 16px;
  border-bottom: 1px solid var(--kv-border);
  text-align: center;
  position: relative;
}

.home-logo {
  position: absolute;
  top: 18px;
  left: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  text-decoration: none;
}
.home-logo img { width: 32px; height: 32px; opacity: 0.9; display: block; transition: opacity 0.15s; }
.home-logo:hover img { opacity: 1; }
.home-logo-label {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  color: var(--kv-muted);
  transition: color 0.15s;
  white-space: nowrap;
}
.home-logo:hover .home-logo-label { color: var(--kv-accent); }

.app-header-center h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--kv-text);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 4px;
}
.title-icon { border-radius: 6px; flex-shrink: 0; }
.app-header-center p {
  color: var(--kv-muted);
  font-size: 0.88rem;
}

/* ── Theme toggle ── */
.theme-toggle {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--kv-border);
  background: var(--kv-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--kv-muted);
  font-size: 0.9rem;
  transition: background 0.15s, border-color 0.15s;
  padding: 0;
}
.theme-toggle:hover {
  background: var(--kv-card-2);
  border-color: var(--kv-accent);
  color: var(--kv-text);
}
/* mobile override MUST come after base rule */
@media (max-width: 800px) {
  .theme-toggle { position: static; width: 44px; height: 44px; flex-shrink: 0; }
}

/* ── Tool navigation bar ── */
.kv-tool-nav {
  display: flex;
  justify-content: center;
  overflow-x: auto;
  border-bottom: 1px solid var(--kv-border);
  background: var(--kv-bg);
  padding: 0 16px;
  scrollbar-width: none;
}
.kv-tool-nav::-webkit-scrollbar { display: none; }
.kv-tool-nav a {
  flex-shrink: 0;
  padding: 10px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--kv-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color 0.15s;
}
.kv-tool-nav a:hover { color: var(--kv-text); }
.kv-tool-nav a.kv-nav-active {
  color: var(--kv-accent);
  border-bottom-color: var(--kv-accent);
}
html:not(.dark) .kv-tool-nav { background: #edf2f7; border-color: #e2e8f0; }
html:not(.dark) .kv-tool-nav a { color: #64748b; }
html:not(.dark) .kv-tool-nav a:hover { color: #0f172a; }
html:not(.dark) .kv-tool-nav a.kv-nav-active { color: #0ea5e9; border-bottom-color: #0ea5e9; }
@media (max-width: 800px) {
  .kv-tool-nav { justify-content: flex-start; }
}

/* ── Disclaimer banner ── */
.disclaimer-banner {
  text-align: center;
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--text-muted);
  padding: 6px 24px;
  margin: 0;
}

/* ── Property tab — single-property model note ── */
.prop-model-note {
  max-width: 900px;
  margin: 14px auto 0;
  padding: 10px 16px;
  border-left: 3px solid var(--kv-warn);
  background: color-mix(in srgb, var(--kv-warn) 8%, var(--kv-card));
  border-radius: 0 6px 6px 0;
  font-size: 0.8rem;
  color: var(--kv-muted);
  line-height: 1.55;
}
html:not(.dark) .prop-model-note {
  background: color-mix(in srgb, var(--kv-warn) 10%, #edf2f7);
  color: #475569;
}

/* ── Tab bar ── */
.tab-bar {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 16px 16px 0;
  border-bottom: 1px solid var(--kv-border);
}
.tab-btn {
  padding: 8px 20px;
  border: 1px solid var(--kv-border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  background: var(--kv-card-2);
  color: var(--kv-muted);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  position: relative;
  bottom: -1px;
}
.tab-btn:hover { background: var(--kv-card); color: var(--kv-text); }
.tab-btn.active {
  background: var(--kv-bg);
  color: var(--kv-accent);
  border-color: var(--kv-border);
  border-bottom-color: var(--kv-bg);
}

/* ── Tab panels ── */
.tab-panel { display: block; }
.tab-panel.hidden { display: none; }

/* ── Main layout ── */
main { max-width: 1120px; margin: 0 auto; padding: 0 16px 48px; }

.layout {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 16px;
  align-items: start;
  padding-top: 20px;
}
.results-panel { min-width: 0; }

/* ── Cards ── */
.card {
  background: var(--kv-card);
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 12px;
}
.card h2 {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--kv-muted);
  margin-bottom: 14px;
}

/* ── Form fields ── */
.field { margin-bottom: 14px; }
.field:last-child { margin-bottom: 0; }

label {
  display: block;
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--kv-muted);
  margin-bottom: 5px;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  padding: 8px 10px;
  background: var(--kv-card-2);
  border: 1px solid var(--kv-border);
  border-radius: 6px;
  color: var(--kv-text);
  font-size: 0.92rem;
  outline: none;
  transition: border-color 0.15s;
  -moz-appearance: textfield;
}
input[type="text"]:focus,
input[type="number"]:focus,
select:focus { border-color: var(--kv-accent); }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }

select { cursor: pointer; }
select option { background: var(--kv-card-2); }

/* Money input with $ prefix */
.input-prefix-wrap { position: relative; }
.input-prefix {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--kv-muted);
  font-size: 0.9rem;
  pointer-events: none;
}
.input-prefix-wrap input { padding-left: 22px; }

/* Derived display below input */
.derived {
  color: var(--kv-accent);
  font-size: 0.8rem;
  margin-top: 5px;
  min-height: 1em;
}
.derived.warn { color: var(--kv-warn); }
.derived.pass { color: var(--kv-pass); }

.field-note {
  font-size: 0.78rem;
  color: var(--kv-muted);
  margin-top: 4px;
  font-style: italic;
}

/* ── Month + year inline pair ── */
.month-year-wrap {
  display: grid;
  grid-template-columns: 1fr 90px;
  gap: 8px;
}
.year-input { width: 100%; }

/* ── Slider ── */
.slider {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--kv-border);
  border-radius: 2px;
  border: none;
  padding: 0;
  cursor: pointer;
  margin-top: 6px;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--kv-accent);
  cursor: pointer;
  border: 2px solid var(--kv-card);
  box-shadow: 0 0 0 1px var(--kv-accent);
}
.slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--kv-accent);
  cursor: pointer;
  border: 2px solid var(--kv-card);
}

/* ── Buttons ── */
.btn-row {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}
.cross-promo {
  margin-top: 10px;
  font-size: 0.82rem;
  color: var(--kv-muted);
}
.cross-promo-link {
  color: var(--kv-accent);
  text-decoration: none;
  white-space: nowrap;
}
.cross-promo-link:hover { text-decoration: underline; }
.btn-primary {
  flex: 1;
  padding: 10px 16px;
  background: var(--kv-accent);
  color: #0f172a;
  border: none;
  border-radius: 7px;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--kv-accent-h); }
.btn-ghost {
  padding: 10px 14px;
  background: transparent;
  color: var(--kv-muted);
  border: 1px solid var(--kv-border);
  border-radius: 7px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.btn-ghost:hover { background: var(--kv-card-2); color: var(--kv-text); }

/* ── Results placeholder ── */
.results-placeholder {
  background: var(--kv-card);
  border: 1px dashed var(--kv-border);
  border-radius: 10px;
  padding: 40px 24px;
  text-align: center;
  color: var(--kv-muted);
  font-size: 0.92rem;
  margin-top: 6px;
}
.results-placeholder strong { color: var(--kv-text); }

/* ── Summary cards grid ── */
.summary-cards {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}
.summary-cards.cols-3 { grid-template-columns: repeat(3, 1fr); }
.summary-cards.cols-4 { grid-template-columns: repeat(4, 1fr); }

.summary-card {
  background: var(--kv-card);
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  padding: 14px 16px;
}
.summary-card .card-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--kv-muted);
  margin-bottom: 6px;
}
.summary-card .card-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--kv-text);
  line-height: 1.2;
}
.summary-card .card-sub {
  font-size: 0.75rem;
  color: var(--kv-muted);
  margin-top: 3px;
}
.summary-card.card-old  .card-value { color: var(--kv-muted); }
.summary-card.card-new  .card-value { color: var(--kv-accent); }
.summary-card.card-better .card-value { color: var(--kv-pass); }
.summary-card.card-worse  .card-value { color: var(--kv-fail); }
.summary-card.card-warn   .card-value { color: var(--kv-warn); }

/* ── Grandfathered notice ── */
.notice-banner {
  background: rgba(34, 197, 94, 0.08);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--kv-pass);
  margin-bottom: 14px;
}
.notice-banner.warn {
  background: rgba(245, 158, 11, 0.08);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--kv-warn);
}

/* ── Impact banner ── */
.impact-banner {
  background: var(--kv-card);
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  padding: 14px 18px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  line-height: 1.6;
}
.impact-banner .impact-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--kv-muted);
  margin-bottom: 6px;
}
.impact-banner .impact-total {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--kv-fail);
}
.impact-banner .impact-total.positive { color: var(--kv-pass); }
.impact-banner .impact-detail { color: var(--kv-muted); font-size: 0.83rem; margin-top: 4px; }

/* ── Chart card ── */
.chart-card {
  background: var(--kv-card);
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 14px;
}
.chart-card h3 {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--kv-muted);
  margin-bottom: 12px;
}
.chart-card canvas {
  width: 100% !important;
  height: 220px !important;
  display: block;
}

/* ── Breakeven row ── */
.breakeven-row {
  background: var(--kv-card-2);
  border-radius: 7px;
  padding: 10px 14px;
  font-size: 0.83rem;
  color: var(--kv-muted);
  margin-bottom: 14px;
}
.breakeven-row strong { color: var(--kv-text); }

/* ── Effective rate table ── */
.rate-table-card {
  background: var(--kv-card);
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 14px;
  overflow-x: auto;
}
.rate-table-card h3 {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--kv-muted);
  margin-bottom: 10px;
}
.kv-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.83rem;
}
.kv-table th {
  text-align: left;
  color: var(--kv-muted);
  font-weight: 600;
  padding: 6px 10px 6px 0;
  border-bottom: 1px solid var(--kv-border);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.kv-table td {
  padding: 7px 10px 7px 0;
  border-bottom: 1px solid var(--kv-border);
  color: var(--kv-text);
}
.kv-table tr:last-child td { border-bottom: none; }
.kv-table .num { text-align: right; padding-right: 0; font-variant-numeric: tabular-nums; }
.kv-table .pass { color: var(--kv-pass); }
.kv-table .fail { color: var(--kv-fail); }
.kv-table .muted { color: var(--kv-muted); }

/* ── Year-by-year table (collapsible) ── */
.year-details {
  background: var(--kv-card);
  border: 1px solid var(--kv-border);
  border-radius: 10px;
  margin-bottom: 14px;
  overflow: hidden;
}
.year-details summary {
  padding: 12px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--kv-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}
.year-details summary::-webkit-details-marker { display: none; }
.year-details summary::after { content: '▸'; color: var(--kv-muted); font-size: 0.8rem; }
.year-details[open] summary::after { content: '▾'; }
.year-details summary:hover { background: var(--kv-card-2); }
.year-details .table-scroll { overflow-x: auto; }
.year-details table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.year-details th {
  background: var(--kv-card-2);
  color: var(--kv-muted);
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 8px 10px;
  text-align: right;
  border-bottom: 1px solid var(--kv-border);
}
.year-details th:first-child { text-align: left; }
.year-details td {
  padding: 7px 10px;
  border-bottom: 1px solid var(--kv-border);
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--kv-text);
}
.year-details td:first-child { text-align: left; color: var(--kv-muted); }
.year-details tr:last-child td { border-bottom: none; }
.year-details tr:nth-child(even) td { background: rgba(255,255,255,0.02); }
html:not(.dark) .year-details tr:nth-child(even) td { background: rgba(0,0,0,0.02); }
.year-details .pass-cell { color: var(--kv-pass); }
.year-details .fail-cell { color: var(--kv-fail); }
.year-details .warn-cell { color: var(--kv-warn); }

/* ── Best-option badge (new build CGT comparison) ── */
.best-badge {
  display: inline-block;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--kv-accent);
  color: #fff;
  padding: 1px 7px;
  border-radius: 10px;
  margin-left: 5px;
  vertical-align: middle;
  text-transform: uppercase;
}

/* ── Tooltip ── */
.tip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--kv-card-2);
  border: 1px solid var(--kv-border);
  color: var(--kv-muted);
  font-size: 0.65rem;
  font-weight: 700;
  cursor: help;
  position: relative;
  margin-left: 4px;
  vertical-align: middle;
  flex-shrink: 0;
}
.tip:hover::after {
  content: attr(data-tip);
  position: absolute;
  left: 20px;
  top: -4px;
  background: var(--kv-card-2);
  border: 1px solid var(--kv-border);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--kv-text);
  white-space: pre-wrap;
  width: 220px;
  z-index: 10;
  line-height: 1.5;
}

/* ── Tool info & FAQ ── */
.tool-info {
  max-width: 900px;
  margin: 48px auto 0;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media (max-width: 680px) { .tool-info { grid-template-columns: 1fr; } }

.tool-info h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--kv-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--kv-border);
}
.tool-about p { font-size: 0.9rem; color: var(--kv-muted); line-height: 1.65; margin-bottom: 10px; }
.faq-item { border-bottom: 1px solid var(--kv-border); padding: 10px 0; }
.faq-item summary {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--kv-text);
  cursor: pointer;
  list-style: none;
  padding-right: 22px;
  position: relative;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; position: absolute; right: 0; color: var(--kv-muted); font-size: 1rem; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { font-size: 0.85rem; color: var(--kv-muted); line-height: 1.6; margin-top: 8px; }

/* ── Footer ── */
footer {
  max-width: 900px;
  margin: 48px auto 32px;
  padding: 16px 20px 0;
  border-top: 1px solid var(--kv-border);
  font-size: 0.8rem;
  color: var(--kv-muted);
  text-align: center;
  line-height: 1.6;
}
footer a { color: var(--kv-accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* ── Mobile responsive ── */
@media (max-width: 800px) {
  .app-header {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 16px;
    text-align: left;
  }
  .home-logo { position: static; flex: 0 0 auto; order: 1; padding-top: 4px; }
  .app-header-center { flex: 1; min-width: 0; order: 2; text-align: center; }
  .app-header-center h1 { font-size: 1.1rem; }
  .theme-toggle { order: 3; }

  .tab-bar { gap: 4px; padding: 12px 12px 0; }
  .tab-btn { padding: 7px 14px; font-size: 0.82rem; }

  .layout { grid-template-columns: 1fr; }

  .summary-cards.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .summary-cards.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .summary-card .card-value { font-size: 1.15rem; }

  input, select, textarea { font-size: 16px; }
  .btn-primary, .btn-ghost { min-height: 44px; }
}

@media (max-width: 480px) {
  .summary-cards.cols-3 { grid-template-columns: 1fr 1fr; }
  .summary-cards.cols-4 { grid-template-columns: 1fr 1fr; }
}

/* ── Sharesight affiliate block ── */
.sharesight-promo { max-width: 900px; margin: 48px auto 0; padding: 0 20px; }
.sharesight-promo-inner { display: flex; align-items: center; gap: 20px; padding: 18px 22px; background: var(--kv-card); border: 1px solid var(--kv-border); border-radius: 12px; }
.sharesight-logo-wrap { flex: 0 0 auto; background: #fff; border-radius: 8px; padding: 6px 10px; display: flex; align-items: center; }
.sharesight-logo-wrap img { height: 28px; width: auto; display: block; }
.sharesight-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.sharesight-offer { font-size: 0.85rem; color: var(--kv-accent) !important; }
.sharesight-copy > p:not(.sharesight-offer) { font-size: 0.85rem; color: var(--kv-muted); line-height: 1.5; }
.sharesight-cta { flex: 0 0 auto; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.sharesight-cta a { display: inline-block; padding: 9px 18px; background: var(--kv-accent); color: #0f172a; font-weight: 600; font-size: 0.85rem; border-radius: 8px; text-decoration: none; white-space: nowrap; transition: opacity 0.15s; }
.sharesight-cta a:hover { opacity: 0.85; }
.sharesight-affiliate-note { font-size: 0.7rem; color: var(--kv-muted); text-align: right; }
@media (max-width: 600px) {
  .sharesight-promo-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
  .sharesight-cta { align-items: flex-start; width: 100%; }
  .sharesight-cta a { width: 100%; text-align: center; }
  .sharesight-affiliate-note { text-align: left; }
}