:root {
  --orange: #f26b43;
  --burnt-orange: #e4813f;
  --warm-grey: #d6d4d0;
  --taupe: #726c60;
  --green: #79a83d;
  --aqua: #c0e0de;
  --gold: #e7b953;
  --charcoal: #3c3c3c;
  --cream: #f8f4ef;
  --ink: #28140a;
  --paper: #ffffff;
  --line: rgba(60, 60, 60, 0.18);
  --shadow: 0 18px 45px rgba(40, 20, 10, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--cream);
  color: var(--charcoal);
  font-family: "Calibri Light", Calibri, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.45;
}

button,
input,
select {
  font: inherit;
}

.sticky-top {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--ink);
  box-shadow: 0 14px 30px rgba(40, 20, 10, 0.16);
}

.page-header {
  background: var(--ink);
  border-bottom: 4px solid var(--orange);
}

.header-inner,
.content-grid {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  display: flex;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0 18px;
}

.header-inner > div {
  text-align: right;
}

.logo-tile {
  width: clamp(150px, 18vw, 220px);
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  padding: 0;
  text-decoration: none;
}

.logo-tile img {
  width: 100%;
  height: auto;
  display: block;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--gold);
  font-size: 0.82rem;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 880px;
  margin-left: auto;
  margin-bottom: 0;
  color: var(--paper);
  font-size: clamp(1.8rem, 3vw, 3rem);
  font-weight: 300;
  line-height: 1.08;
}

h2 {
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 1.65rem;
  font-weight: 300;
}

h3 {
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 300;
}

.intro-band {
  padding: 34px 0;
  background: linear-gradient(90deg, var(--aqua), #fff 62%);
}

.intro-band .content-grid {
  display: block;
}

.intro-band p,
.section-heading p {
  margin-bottom: 0;
  color: var(--taupe);
}

.preset-band {
  padding: 12px 0 14px;
  background: var(--ink);
}

.preset-band .content-grid {
  display: block;
}

.action-strip {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: end;
  padding: 18px;
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.preset-band .action-strip {
  grid-template-columns: minmax(240px, 1fr) auto;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.action-strip label {
  grid-column: 1 / -1;
  color: var(--ink);
  font-size: 0.92rem;
}

.preset-band .action-strip label {
  color: var(--warm-grey);
}

.form-band,
.results-band {
  padding: 38px 0 46px;
}

.content-grid.stacked {
  display: grid;
  gap: 28px;
}

form {
  display: grid;
  gap: 28px;
}

.section-heading {
  padding-top: 4px;
  border-top: 2px solid var(--orange);
}

.field-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--ink);
}

label span {
  font-size: 0.9rem;
}

input,
select {
  width: 100%;
  min-height: 44px;
  padding: 9px 11px;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
}

input:focus,
select:focus,
button:focus {
  outline: 3px solid rgba(242, 107, 67, 0.28);
  outline-offset: 2px;
}

input:disabled,
select:disabled {
  color: var(--taupe);
  background: #f3f1ed;
  cursor: not-allowed;
}

.wide-field {
  grid-column: span 2;
}

button {
  min-height: 44px;
  padding: 10px 22px;
  color: #fff;
  background: var(--orange);
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background: var(--burnt-orange);
}

.mix-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.mix-panel,
.chart-panel,
.result-cards article,
.details-panel,
.prior-details {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.mix-panel,
.chart-panel,
.details-panel,
.prior-details {
  padding: 18px;
}

.details-panel > summary,
.prior-details summary {
  display: grid;
  gap: 2px;
  color: var(--ink);
  cursor: pointer;
  list-style-position: outside;
}

.details-panel > summary span {
  font-size: 1.2rem;
}

.details-panel > summary small {
  color: var(--taupe);
}

.details-panel > .field-grid,
.details-panel > .mix-layout {
  margin-top: 18px;
}

.details-panel > .prior-details {
  margin-top: 18px;
  padding: 16px 18px;
  background: #fbfaf8;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: none;
}

.mix-panel.large {
  grid-column: span 1;
}

.mix-grid {
  display: grid;
  gap: 10px;
}

.mix-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 86px;
  gap: 10px;
  align-items: center;
}

.mix-row label {
  min-width: 0;
  color: var(--charcoal);
}

.mix-row input {
  min-height: 36px;
  padding: 6px 8px;
  text-align: right;
}

.mix-total {
  margin-top: 12px;
  color: var(--taupe);
  font-size: 0.9rem;
}

.prior-grid {
  margin-top: 16px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 22px;
}

.form-errors {
  display: none;
  padding: 14px 16px;
  color: #7a260e;
  background: #f8ddc4;
  border: 1px solid rgba(160, 65, 30, 0.28);
  border-radius: 8px;
}

.form-errors.visible {
  display: block;
}

.results-band {
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.hidden {
  display: none;
}

.result-cards {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.result-cards article {
  min-height: 136px;
  padding: 18px;
  display: grid;
  align-content: space-between;
}

.result-cards span,
.result-cards small {
  color: var(--taupe);
}

.result-cards strong {
  color: var(--ink);
  font-size: clamp(1.4rem, 2.2vw, 2.2rem);
  font-weight: 300;
  line-height: 1.05;
}

.chart-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.chart {
  min-height: 280px;
  position: relative;
}

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

.axis,
.grid-line {
  stroke: rgba(60, 60, 60, 0.18);
  stroke-width: 1;
}

.chart-label {
  fill: var(--taupe);
  font-size: 13px;
}

.chart-line {
  fill: none;
  stroke: var(--orange);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-area {
  fill: rgba(242, 107, 67, 0.12);
}

.bar {
  fill: var(--green);
}

.hit-zone {
  fill: transparent;
  pointer-events: all;
}

.data-point {
  fill: var(--paper);
  stroke: var(--orange);
  stroke-width: 3;
  pointer-events: none;
}

.chart-tooltip {
  position: absolute;
  z-index: 2;
  max-width: 210px;
  padding: 8px 10px;
  color: var(--paper);
  background: var(--ink);
  border-radius: 6px;
  box-shadow: 0 10px 26px rgba(40, 20, 10, 0.2);
  font-size: 0.88rem;
  line-height: 1.25;
  pointer-events: none;
  transform: translate(-50%, calc(-100% - 12px));
}

.chart-tooltip.hidden {
  display: none;
}

.page-footer {
  padding: 24px 0;
  color: var(--warm-grey);
  background: var(--ink);
  border-top: 4px solid var(--orange);
}

.page-footer p {
  max-width: 940px;
  margin-bottom: 0;
  font-size: 0.9rem;
}

@media (max-width: 980px) {
  .field-grid,
  .mix-layout,
  .chart-layout,
  .result-cards {
    grid-template-columns: 1fr 1fr;
  }

  .wide-field {
    grid-column: span 2;
  }

  .result-cards article {
    min-height: 116px;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    align-items: flex-start;
    padding: 16px 0 12px;
  }

  .field-grid,
  .mix-layout,
  .chart-layout,
  .result-cards,
  .prior-grid,
  .action-strip {
    grid-template-columns: 1fr;
  }

  .preset-band .action-strip {
    grid-template-columns: 1fr;
  }

  .wide-field {
    grid-column: auto;
  }

  .action-strip label {
    grid-column: auto;
  }

  .header-inner {
    display: grid;
    justify-items: start;
  }

  .header-inner > div {
    text-align: left;
  }

  h1 {
    margin-left: 0;
  }

  .logo-tile {
    width: 170px;
  }
}