:root {
  color-scheme: dark;
  --bg: #090b10;
  --panel: #121722;
  --panel-2: #171f2d;
  --text: #f4f7fb;
  --muted: #a8b3c7;
  --line: #283244;
  --accent: #2dd4bf;
  --accent-2: #f59e0b;
  --danger: #fb7185;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(45, 212, 191, 0.16), transparent 32rem),
    linear-gradient(135deg, #090b10 0%, #10141d 45%, #0b1018 100%);
  color: var(--text);
}

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

.shell {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0;
}

.shell.wide {
  width: min(1180px, calc(100% - 32px));
}

.hero,
.result-hero {
  display: grid;
  gap: 18px;
  margin-bottom: 28px;
}

.hero {
  max-width: 780px;
}

.result-hero {
  grid-template-columns: minmax(0, 1fr) 280px;
  align-items: stretch;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 860px;
  margin-bottom: 0;
  font-size: clamp(2.3rem, 6vw, 5.8rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 10px;
  font-size: 1.05rem;
  letter-spacing: 0;
}

.lede {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.panel,
.score-card,
.meta-grid > div,
.month-card,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(18, 23, 34, 0.86);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.32);
}

.panel {
  margin-bottom: 24px;
  padding: 24px;
}

.roadmap-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 16px;
  align-items: end;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

select,
input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d121b;
  color: var(--text);
  font: inherit;
  padding: 0 12px;
}

button {
  min-height: 46px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #03110f;
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  padding: 0 18px;
}

button:hover,
.reference-list a:hover {
  filter: brightness(1.08);
}

.empty-state {
  display: grid;
  min-height: 140px;
  place-items: center;
  padding: 24px;
}

.empty-state div {
  display: grid;
  gap: 8px;
  text-align: center;
}

.empty-state span {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 900;
  text-transform: uppercase;
}

.empty-state strong {
  font-size: 1.1rem;
}

.empty-state p {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

button.secondary {
  border: 1px solid rgba(45, 212, 191, 0.45);
  background: rgba(45, 212, 191, 0.1);
  color: var(--accent);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 34px;
}

.score-card {
  display: grid;
  align-content: center;
  gap: 8px;
  min-height: 180px;
  padding: 24px;
}

.score-card span,
.score-card small,
.meta-grid span {
  color: var(--muted);
}

.score-card strong {
  color: var(--accent-2);
  font-size: 4.2rem;
  line-height: 1;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.meta-grid > div {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.meta-grid strong {
  font-size: 1.05rem;
}

.timeline {
  display: grid;
  gap: 12px;
}

.month-card {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 20px;
  padding: 20px;
}

.month-index {
  color: var(--accent);
  font-weight: 900;
}

ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.55;
}

h3 {
  margin: 18px 0 8px;
  color: var(--text);
  font-size: 0.92rem;
  letter-spacing: 0;
}

.instruction-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
  color: var(--muted);
  line-height: 1.55;
}

.reference-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.reference-list a {
  border: 1px solid rgba(45, 212, 191, 0.34);
  border-radius: 8px;
  background: rgba(45, 212, 191, 0.08);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 800;
  line-height: 1.2;
  padding: 8px 10px;
}

@media (max-width: 860px) {
  .shell {
    padding: 36px 0;
  }

  .roadmap-form,
  .result-hero,
  .meta-grid,
  .month-card {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar form,
  .topbar button {
    width: 100%;
  }

  h1 {
    font-size: 2.45rem;
    line-height: 1.06;
  }
}