:root {
  color-scheme: light;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top, rgba(117, 201, 255, 0.26), transparent 34%),
    linear-gradient(180deg, #0f3550 0%, #0d2232 100%);
  color: #14212b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(117, 201, 255, 0.26), transparent 34%),
    linear-gradient(180deg, #0f3550 0%, #0d2232 100%);
}

button,
input,
select {
  font: inherit;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.hero {
  color: #eef7fd;
  max-width: 720px;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(238, 247, 253, 0.74);
}

.hero h1,
.panel h2,
.result-copy h3 {
  margin: 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.75rem);
  line-height: 0.98;
}

.intro {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 1.02rem;
  line-height: 1.6;
  color: rgba(238, 247, 253, 0.86);
}

.layout {
  display: grid;
  gap: 20px;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  align-items: start;
}

.panel {
  background: rgba(247, 251, 254, 0.96);
  border: 1px solid rgba(14, 47, 67, 0.12);
  border-radius: 24px;
  padding: 24px;
  box-shadow:
    0 22px 45px rgba(3, 15, 24, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

.panel h2 {
  font-size: 1.3rem;
  color: #122838;
}

.form {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span,
.result-copy h3,
.score-card dt {
  font-size: 0.92rem;
  font-weight: 600;
  color: #355164;
}

.field input,
.field select {
  width: 100%;
  border: 1px solid rgba(44, 91, 119, 0.2);
  border-radius: 14px;
  padding: 14px 16px;
  background: #ffffff;
  color: #102635;
  outline: none;
  transition:
    border-color 120ms ease,
    box-shadow 120ms ease,
    transform 120ms ease;
}

.field input:focus,
.field select:focus {
  border-color: #237bb3;
  box-shadow: 0 0 0 4px rgba(35, 123, 179, 0.14);
  transform: translateY(-1px);
}

.helper {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: #536e80;
}

.submit {
  border: 0;
  border-radius: 999px;
  padding: 14px 18px;
  background: linear-gradient(135deg, #2b9fe2 0%, #156b9f 100%);
  color: #f4fbff;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(18, 107, 159, 0.28);
  transition:
    transform 120ms ease,
    box-shadow 120ms ease;
}

.submit:hover,
.submit:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(18, 107, 159, 0.34);
}

.result-panel {
  min-height: 100%;
}

.result-panel.is-empty .summary,
.result-panel.is-empty .advisory-list li {
  color: #5a7180;
}

.result-panel.is-error {
  border-color: rgba(176, 82, 82, 0.3);
}

.route-info {
  margin-bottom: 24px;
  padding: 18px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(232, 243, 250, 0.95), rgba(243, 249, 252, 0.95));
  border: 1px solid rgba(47, 90, 118, 0.1);
}

.route-eyebrow {
  color: #60798a;
}

.route-title {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  color: #122838;
}

.route-description {
  margin: 10px 0 0;
  font-size: 0.98rem;
  line-height: 1.6;
  color: #355164;
}

.result-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
}

.result-header .eyebrow {
  color: #60798a;
}

.result-header h2 {
  margin-top: 4px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.badge {
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 0.92rem;
  font-weight: 700;
}

.badge.go {
  background: #dff5e6;
  color: #18613a;
}

.badge.caution {
  background: #fff2c7;
  color: #855b00;
}

.badge.no-go {
  background: #ffe0df;
  color: #9b2822;
}

.badge.neutral {
  background: #e8f1f6;
  color: #3a5a6f;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 24px 0;
}

.score-card {
  margin: 0;
  padding: 18px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(232, 243, 250, 0.9), rgba(245, 250, 253, 0.9));
  border: 1px solid rgba(47, 90, 118, 0.1);
}

.score-card dd {
  margin: 12px 0 0;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: #132a39;
}

.confidence-card {
  margin: -4px 0 24px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(232, 243, 250, 0.72);
  border: 1px solid rgba(47, 90, 118, 0.1);
}

.confidence-card .eyebrow {
  color: #60798a;
}

.confidence-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin: 0;
  color: #355164;
}

.confidence-line strong {
  color: #122838;
}

.result-copy + .result-copy {
  margin-top: 24px;
}

.summary {
  margin: 12px 0 0;
  font-size: 1rem;
  line-height: 1.65;
  color: #213a4a;
}

.advisory-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: #213a4a;
}

.reasons-list {
  margin: 12px 0 0;
  padding-left: 18px;
  color: #213a4a;
}

.reasons-list li + li,
.advisory-list li + li {
  margin-top: 10px;
}

.segment-list,
.window-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.segment-card,
.window-card {
  padding: 16px;
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(232, 243, 250, 0.74), rgba(245, 250, 253, 0.92));
  border: 1px solid rgba(47, 90, 118, 0.1);
}

.segment-card.is-worst {
  border-color: rgba(133, 91, 0, 0.28);
  box-shadow: inset 0 0 0 1px rgba(255, 194, 64, 0.18);
}

.segment-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.segment-header h4 {
  margin: 6px 0 0;
  font-size: 1rem;
  color: #122838;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 0;
}

.metric-grid div {
  min-width: 0;
}

.metric-grid dt {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #60798a;
}

.metric-grid dd {
  margin: 4px 0 0;
  color: #213a4a;
  font-weight: 700;
}

.window-note {
  margin: 14px 0 0;
  font-size: 0.92rem;
  line-height: 1.5;
  color: #536e80;
}

.disclaimer {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid rgba(47, 90, 118, 0.14);
}

.disclaimer-heading {
  margin: 0 0 8px;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #294657;
}

.disclaimer-text {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.55;
  color: #5c7484;
}

@media (max-width: 860px) {
  .shell {
    width: min(100% - 24px, 720px);
    padding-top: 32px;
  }

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

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

@media (max-width: 520px) {
  .panel {
    padding: 20px;
    border-radius: 20px;
  }

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