/* HaulYards — US gravel calculator. Dark default, stone accent, calm spacing. */
:root {
  --bg: #0e1218;
  --bg-card: #171d26;
  --bg-input: #1e2733;
  --bg-chip: #243041;
  --border: #2a3544;
  --border-soft: #222b38;
  --text: #eef2f7;
  --text-muted: #8b9aab;
  --accent: #d4a056;
  --accent-dim: rgba(212, 160, 86, 0.14);
  --good: #3ecf8e;
  --good-dim: rgba(62, 207, 142, 0.12);
  --warn: #e6b84d;
  --warn-dim: rgba(230, 184, 77, 0.12);
  --truck: #f0a060;
  --truck-dim: rgba(240, 160, 96, 0.12);
  --radius: 14px;
  --radius-sm: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --tap: 44px;
}

[data-theme="light"] {
  --bg: #f3f5f8;
  --bg-card: #ffffff;
  --bg-input: #eef1f5;
  --bg-chip: #e6ebf1;
  --border: #d5dce6;
  --border-soft: #e4e9f0;
  --text: #15202b;
  --text-muted: #5c6b7a;
  --accent: #b8860b;
  --accent-dim: rgba(184, 134, 11, 0.12);
  --good: #1a9a5c;
  --good-dim: rgba(26, 154, 92, 0.1);
  --warn: #b8860b;
  --warn-dim: rgba(184, 134, 11, 0.1);
  --truck: #c46a28;
  --truck-dim: rgba(196, 106, 40, 0.1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  font-size: 16px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  width: min(720px, 100% - 1.5rem);
  margin-inline: auto;
}

/* —— Header —— */
.site-header {
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 40;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; color: inherit; }

.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--accent);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.btn-icon {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-muted);
  border-radius: 8px;
  min-height: 36px;
  padding: 0 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.btn-icon:hover { color: var(--text); border-color: var(--accent); }
.btn-icon:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* —— Tool —— */
.tool {
  padding: 1.25rem 0 0.5rem;
}

.tool h1 {
  margin: 0 0 1rem;
  font-size: clamp(1.35rem, 4.5vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 2px);
  padding: 0;
  overflow: hidden;
  margin-bottom: 2rem;
}

/* —— Answer first (above the fold) —— */
.answer-block {
  padding: 1.35rem 1.25rem 1.15rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-soft);
}

@media (min-width: 480px) {
  .answer-block { padding: 1.5rem 1.5rem 1.25rem; }
}

.answer-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.answer-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.answer-big {
  font-size: clamp(1.85rem, 7vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--accent);
}

.answer-big.bags { color: var(--good); }

.answer-big .unit {
  font-size: 0.45em;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--text-muted);
  margin-left: 0.15em;
}

.answer-sub {
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.buy-advice {
  padding: 0.9rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border);
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 0.75rem;
}
.buy-advice strong { font-weight: 700; }
.buy-advice em { font-style: normal; font-weight: 600; color: var(--accent); }

.buy-advice.advice-bags {
  background: var(--good-dim);
  border-color: color-mix(in srgb, var(--good) 35%, transparent);
}
.buy-advice.advice-bags em { color: var(--good); }

.buy-advice.advice-either {
  background: var(--warn-dim);
  border-color: color-mix(in srgb, var(--warn) 35%, transparent);
}
.buy-advice.advice-either em { color: var(--warn); }

.buy-advice.advice-truck {
  background: var(--truck-dim);
  border-color: color-mix(in srgb, var(--truck) 35%, transparent);
}
.buy-advice.advice-truck em { color: var(--truck); }

.bag-alts {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.bag-alts strong { color: var(--text); font-weight: 600; }

/* —— Controls —— */
.controls {
  padding: 1.15rem 1.25rem 1.35rem;
}

@media (min-width: 480px) {
  .controls { padding: 1.25rem 1.5rem 1.5rem; }
}

.control-row {
  margin-bottom: 1.15rem;
}

.control-row.dual {
  display: grid;
  gap: 1rem;
}

@media (min-width: 520px) {
  .control-row.dual { grid-template-columns: 1.4fr 1fr; }
}

.control-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.45rem;
}

/* Chips / presets */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-chip);
  color: var(--text);
  border-radius: 999px;
  min-height: var(--tap);
  padding: 0.45rem 0.9rem;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  line-height: 1.2;
  transition: border-color 0.12s, background 0.12s;
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}
.chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.chip-sm {
  min-height: 36px;
  padding: 0.3rem 0.75rem;
  font-size: 0.75rem;
}

.thick-chips {
  margin-top: 0.5rem;
}

/* Segmented controls */
.seg {
  display: inline-flex;
  flex-wrap: wrap;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  width: 100%;
}

.seg button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-muted);
  flex: 1 1 auto;
  min-height: 40px;
  padding: 0.4rem 0.65rem;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}
.seg button[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
}
.seg button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

/* Fields */
.fields {
  display: grid;
  gap: 1rem;
  margin-bottom: 0.25rem;
}

@media (min-width: 560px) {
  .fields { grid-template-columns: repeat(3, 1fr); }
}

.field[hidden] { display: none !important; }

.field label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.dim-row {
  display: flex;
  gap: 0.45rem;
}

.dim-row .part { flex: 1; min-width: 0; }

.dim-row input,
.metric-input {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text);
  border-radius: var(--radius-sm);
  min-height: var(--tap);
  padding: 0.6rem 0.7rem;
  font-size: 1.0625rem;
  font-family: inherit;
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}
.dim-row input:focus,
.metric-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

/* Hide number spinners on mobile-ish inputs */
.dim-row input::-webkit-outer-spin-button,
.dim-row input::-webkit-inner-spin-button,
.metric-input::-webkit-outer-spin-button,
.metric-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.dim-row input[type="number"],
.metric-input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

.unit-tag {
  display: block;
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
  padding-left: 0.15rem;
}

.imperial-only, .metric-only { display: none; }
body[data-units="imperial"] .imperial-only { display: block; }
body[data-units="metric"] .metric-only { display: block; }
body[data-units="imperial"] .imperial-flex { display: flex; }
body[data-units="metric"] .imperial-flex { display: none; }
body[data-units="imperial"] .thick-chips.imperial-only { display: flex; }
body[data-units="metric"] .thick-chips.metric-only { display: flex; }

.options-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-soft);
}

.waste-row {
  align-items: flex-end;
}

.waste-control {
  flex: 1 1 14rem;
  min-width: 0;
  max-width: 22rem;
}

.waste-label-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.45rem;
}

.waste-label-row label {
  font-size: 0.9375rem;
  font-weight: 560;
  color: var(--text);
}

.waste-value {
  font-variant-numeric: tabular-nums;
  font-size: 0.9375rem;
  font-weight: 650;
  color: var(--accent);
  min-width: 2.75rem;
  text-align: right;
}

.waste-control input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 1.75rem;
  margin: 0;
  background: transparent;
  cursor: pointer;
}

.waste-control input[type="range"]::-webkit-slider-runnable-track {
  height: 0.35rem;
  border-radius: 999px;
  background: var(--bg-chip);
  border: 1px solid var(--border);
}

.waste-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.15rem;
  height: 1.15rem;
  margin-top: -0.42rem;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid color-mix(in srgb, var(--accent) 40%, var(--bg-card));
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.28);
}

.waste-control input[type="range"]::-moz-range-track {
  height: 0.35rem;
  border-radius: 999px;
  background: var(--bg-chip);
  border: 1px solid var(--border);
}

.waste-control input[type="range"]::-moz-range-thumb {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid color-mix(in srgb, var(--accent) 40%, var(--bg-card));
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.28);
}

.waste-hint {
  margin: 0.25rem 0 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
}

.reset-link {
  margin-left: auto;
  appearance: none;
  border: none;
  background: transparent;
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  padding: 0.4rem 0;
  min-height: 36px;
}
.reset-link:hover { text-decoration: underline; }

.warnings {
  padding: 0 1.25rem;
  display: grid;
  gap: 0.45rem;
}
@media (min-width: 480px) {
  .warnings { padding: 0 1.5rem; }
}
.warnings:empty { display: none; }
.warnings:not(:empty) { padding-bottom: 0.75rem; }

.warning-msg {
  background: var(--warn-dim);
  border: 1px solid color-mix(in srgb, var(--warn) 30%, transparent);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  font-size: 0.875rem;
}
.warning-msg strong { color: var(--warn); }

/* Steps — collapsed by default so answer stays primary */
.steps-fold {
  margin-top: 1rem;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 0;
  background: transparent;
}
.steps-fold summary {
  cursor: pointer;
  padding: 0.7rem 0.9rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  list-style: none;
}
.steps-fold summary::-webkit-details-marker { display: none; }
.steps-fold summary::before {
  content: "▸ ";
  color: var(--accent);
}
.steps-fold[open] summary::before { content: "▾ "; }
.steps-fold[open] summary {
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 0;
}
.steps-fold ol {
  margin: 0;
  padding: 0.75rem 0.9rem 0.9rem 1.6rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.steps-fold li { margin: 0.35rem 0; }
.steps-fold strong { color: var(--text); }

/* —— Below-fold content —— */
.section {
  padding: 1.75rem 0;
  border-top: 1px solid var(--border-soft);
}
.section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section h3 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}
.section p, .section li { color: var(--text-muted); font-size: 0.9375rem; }
.section p { margin: 0 0 0.75rem; }
.section ul { margin: 0 0 0.85rem; padding-left: 1.2rem; }

.example-cards {
  display: grid;
  gap: 0.85rem;
}
@media (min-width: 560px) {
  .example-cards { grid-template-columns: 1fr 1fr; }
}
.example {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
}
.example .nums {
  font-variant-numeric: tabular-nums;
  color: var(--text);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
}
.example p:last-child { margin-bottom: 0; }

.faq details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  margin-bottom: 0.5rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text);
}
.faq details[open] summary { margin-bottom: 0.45rem; }
.faq details p { margin: 0; font-size: 0.9rem; }

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 1.5rem 0 2.5rem;
  color: var(--text-muted);
  font-size: 0.8125rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
}
.footer-links { display: flex; gap: 1rem; }
.disclaimer {
  margin-top: 0.65rem;
  font-size: 0.75rem;
  max-width: 36rem;
  line-height: 1.45;
}

/* Privacy page reuse */
.section .wrap > h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}


/* —— HaulYards extras —— */
.tagline {
  margin: -0.55rem 0 1.1rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.answer-main.triple {
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.15rem;
}
@media (min-width: 560px) {
  .answer-main.triple { grid-template-columns: 1.1fr 1fr 0.9fr; }
}

.answer-big.tons { color: var(--truck); }

.net-order {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.15rem;
  margin: 0.15rem 0 0.85rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.net-order strong { color: var(--text); font-weight: 600; }

.density-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

.material-select,
.custom-density input {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text);
  border-radius: var(--radius-sm);
  min-height: var(--tap);
  padding: 0.6rem 0.85rem;
  font-size: 0.9375rem;
  font-family: inherit;
}
.material-select:focus,
.custom-density input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}
.custom-density[hidden] { display: none !important; }
.custom-density {
  margin-top: 0.65rem;
}
.custom-density label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.coverage-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}
.coverage-table th,
.coverage-table td {
  text-align: left;
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid var(--border-soft);
}
.coverage-table th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.coverage-table td { color: var(--text); }
.coverage-note {
  margin-top: 0.65rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.share-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.75rem;
}
.share-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--bg-chip);
  color: var(--text);
  border-radius: 8px;
  min-height: 36px;
  padding: 0 0.85rem;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}
.share-btn:hover { border-color: var(--accent); color: var(--accent); }
.share-status {
  font-size: 0.75rem;
  color: var(--good);
  min-height: 1em;
}