:root {
  color-scheme: dark;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #08101f;
  color: #edf2ff;
  font-size: 16px;
  line-height: 1.5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, rgba(47, 170, 255, 0.18), transparent 32%),
              radial-gradient(circle at bottom right, rgba(153, 102, 255, 0.18), transparent 28%),
              linear-gradient(180deg, #0b1622 0%, #07101a 100%);
}

.page-shell {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

.hero-card {
  display: grid;
  gap: 24px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(18px);
}

.hero-copy {
  max-width: 560px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #78c3ff;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.hero-copy h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 2.6vw, 3.2rem);
  line-height: 1.03;
}

.hero-copy p {
  margin: 0;
  color: #c8d5ff;
}

.hero-panel {
  padding: 28px;
  border-radius: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.06), 0 24px 80px rgba(0, 0, 0, 0.25);
}

.panel-header h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}

.panel-header p {
  margin: 0;
  color: #b8c7ff;
}

.planner-form {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.planner-form label {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  font-weight: 600;
}

.planner-form input[type="range"] {
  width: 100%;
  accent-color: #6f9cff;
}

.result-card {
  margin-top: 28px;
  padding: 22px;
  background: rgba(10, 22, 36, 0.96);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.result-card h3 {
  margin: 0 0 16px;
  color: #dbecff;
}

.result-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.result-row:last-child {
  margin-bottom: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.result-row strong {
  font-size: 1.2rem;
  color: #fff;
}

.info-grid {
  display: grid;
  gap: 20px;
  margin-top: 36px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.info-grid article {
  padding: 24px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.info-grid h3 {
  margin-top: 0;
}

@media (min-width: 860px) {
  .hero-card {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
  }
}

@media (max-width: 620px) {
  .page-shell {
    padding: 24px 16px 32px;
  }

  .result-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .result-row span:last-child {
    opacity: 0.72;
  }
}