:root,
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f7f3;
  --panel: #ffffff;
  --panel-soft: #fbfcfa;
  --text: #1d2522;
  --muted: #67716c;
  --line: #d8ded8;
  --accent: #146c5f;
  --accent-2: #cf5c36;
  --accent-3: #355c9a;
  --good: #176f4d;
  --warn: #a25023;
  --warn-bg: #f8f1e9;
  --warn-text: #5f371f;
  --good-bg: #ecf6f0;
  --good-text: #164936;
  --shadow: 0 16px 40px rgba(36, 45, 40, 0.09);
  --focus-ring: 0 0 0 3px rgba(20, 108, 95, 0.28);
  --button-bg: #f7f8f5;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11161a;
  --panel: #1a2024;
  --panel-soft: #161b1f;
  --text: #e7ece8;
  --muted: #8a9590;
  --line: #2c343a;
  --accent: #2ea58f;
  --accent-2: #ef7a52;
  --accent-3: #6e92d6;
  --good: #4cb088;
  --warn: #e0a079;
  --warn-bg: #2a201a;
  --warn-text: #f4d2b6;
  --good-bg: #182721;
  --good-text: #cce8d9;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  --focus-ring: 0 0 0 3px rgba(46, 165, 143, 0.4);
  --button-bg: #232a30;
}

* { box-sizing: border-box; }

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 8px 12px;
  border-radius: 0 0 6px 0;
  font-weight: 800;
  z-index: 50;
}
.skip-link:focus { left: 0; }

.noscript-message {
  margin: 0;
  padding: 12px 18px;
  background: var(--warn-bg);
  color: var(--warn-text);
  font-weight: 700;
}

/* ---------- Mobile-first base layout ---------- */
.app-shell {
  width: min(1240px, calc(100% - 20px));
  margin: 0 auto;
  padding: 18px 0 32px;
}

.topbar {
  display: grid;
  gap: 16px;
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 8px;
  font-size: clamp(1.7rem, 5vw, 4rem);
  line-height: 1;
}

h2 { margin-bottom: 0; font-size: 1rem; }

.topbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
}

.inline-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--muted);
  font-weight: 700;
}

.top-message {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--accent);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.top-message.show { opacity: 1; }

/* Panels and cards */
.verdict-card,
.panel,
.summary-grid article,
.metrics-grid article {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.verdict-card {
  min-height: 110px;
  padding: 16px;
  border-radius: 8px;
  display: grid;
  gap: 6px;
  align-content: center;
}
.verdict-card.buy { border-color: color-mix(in srgb, var(--good) 50%, transparent); }
.verdict-card.rent { border-color: color-mix(in srgb, var(--warn) 50%, transparent); }

.verdict-label,
.summary-grid span,
.chart-title span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.verdict-card strong { font-size: 1.4rem; }
.verdict-card span:last-child { color: var(--muted); font-size: 0.92rem; }

.summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 12px;
}
.summary-grid article {
  border-radius: 8px;
  padding: 14px;
  min-width: 0;
}
.summary-grid strong {
  display: block;
  margin: 6px 0 4px;
  font-size: clamp(1.3rem, 3.5vw, 1.85rem);
  white-space: nowrap;
}
.summary-grid small { color: var(--muted); }

/* Tabs */
.tab-switcher {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 14px;
  padding: 5px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Dashboard layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: start;
}

.panel {
  border-radius: 8px;
  padding: 16px;
}

.panel-heading {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}
.panel-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.preset-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--button-bg);
  color: var(--text);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  padding: 4px 10px;
}
button .icon {
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}
button:hover { border-color: var(--accent); }
button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: var(--accent);
}
button.active,
button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

/* Controls */
.controls { display: grid; gap: 14px; }
#homeFieldsMount, #carFieldsMount { display: contents; }
.controls h3 {
  margin: 4px 0 -2px;
  color: var(--text);
  font-size: 0.82rem;
  text-transform: uppercase;
}

.control-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.control-group {
  display: grid;
  gap: 6px;
  min-width: 0;
  position: relative;
}

label {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.input-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 96px;
  gap: 8px;
  align-items: center;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}
input[type="range"]:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 4px;
}

input[type="number"] {
  width: 100%;
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}
input[type="number"]:focus,
select:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: var(--focus-ring);
}

input.clamped {
  border-color: var(--warn);
  background: var(--warn-bg);
}
.live-chip {
  justify-self: start;
  margin-top: 2px;
  padding: 2px 8px;
  font-size: 0.7rem;
  font-weight: 700;
  border: 1px dashed var(--accent);
  background: transparent;
  color: var(--accent);
  border-radius: 4px;
  min-height: 22px;
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
}
.live-chip:hover {
  background: var(--accent);
  color: #fff;
}

.clamp-tip {
  position: absolute;
  right: 0;
  bottom: -16px;
  font-size: 0.7rem;
  color: var(--warn);
  font-weight: 700;
  pointer-events: none;
}

select {
  width: 100%;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 0.9rem;
  padding: 6px 8px;
}

.scenario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.mini-panel {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: var(--panel-soft);
  min-width: 0;
}
.mini-panel strong { font-size: 0.92rem; }
.mini-panel label {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 86px;
  gap: 8px;
  align-items: center;
  font-size: 0.78rem;
}
.mini-panel input[type="number"] {
  min-height: 30px;
  padding: 4px 6px;
  font-size: 0.84rem;
}

.visuals { min-width: 0; }

.chart-block {
  border-top: 1px solid var(--line);
  padding-top: 14px;
  margin-top: 12px;
}
.chart-title {
  display: grid;
  gap: 4px;
  margin-bottom: 8px;
}
.chart-title strong { font-size: 0.95rem; }

svg { display: block; width: 100%; height: auto; }

.axis-label, .bar-label, .stack-label {
  fill: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.value-label { fill: var(--text); font-size: 15px; font-weight: 800; }
.line-label { fill: var(--text); font-size: 13px; font-weight: 800; }

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}
.metrics-grid article {
  border-radius: 8px;
  padding: 12px;
  min-width: 0;
}
.metrics-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
}
.metrics-grid strong {
  display: block;
  margin-top: 6px;
  font-size: 1.05rem;
  white-space: nowrap;
}

.note {
  margin-top: 14px;
  padding: 14px;
  border-radius: 8px;
  background: var(--warn-bg);
  color: var(--warn-text);
  font-size: 0.92rem;
  line-height: 1.45;
}
.note.ok { background: var(--good-bg); color: var(--good-text); }

.formula-panel { margin-top: 12px; }
.formula-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 12px;
}
.formula-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  min-width: 0;
}
.formula-grid strong { display: block; margin-bottom: 8px; }
code {
  color: var(--muted);
  font-size: 0.86rem;
  white-space: normal;
}

/* Saved scenarios */
.saved-panel { margin-top: 12px; }
.saved-empty { color: var(--muted); font-size: 0.9rem; margin: 0; }

.saved-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.saved-table th, .saved-table td {
  text-align: left;
  padding: 8px 6px;
  border-bottom: 1px solid var(--line);
}
.saved-table th {
  color: var(--muted);
  font-weight: 800;
  font-size: 0.72rem;
  text-transform: uppercase;
}
.saved-table .gap-buy { color: var(--good); font-weight: 800; }
.saved-table .gap-rent { color: var(--warn); font-weight: 800; }
.saved-table button { min-height: 28px; font-size: 0.72rem; }

/* ---------- Tablet ---------- */
@media (min-width: 560px) {
  .app-shell { width: min(1240px, calc(100% - 32px)); padding: 22px 0 36px; }
  .topbar-actions { gap: 10px; }
  .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .metrics-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .control-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scenario-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .formula-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .preset-group { display: inline-flex; grid-template-columns: none; }
  .panel-heading {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 14px;
  }
  .panel-heading p { text-align: right; }
  .chart-title { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
}

/* ---------- Desktop ---------- */
@media (min-width: 920px) {
  .app-shell { padding-top: 28px; }
  .topbar {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: end;
  }
  .summary-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .dashboard-grid { grid-template-columns: 460px minmax(0, 1fr); }
  .panel { padding: 18px; }
}

/* ---------- Print ---------- */
@media print {
  body { background: #fff; }
  .topbar-actions, .tab-switcher, .preset-group, .saved-table button { display: none !important; }
  .tab-panel { display: block !important; page-break-after: always; }
  .panel, .summary-grid article, .metrics-grid article {
    box-shadow: none;
    border-color: #ccc;
  }
  .chart-block { page-break-inside: avoid; }
}