:root {
  --bg-top: #10131d;
  --bg-bottom: #281924;
  --panel: rgba(18, 22, 34, 0.84);
  --panel-strong: rgba(14, 17, 28, 0.94);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 180, 104, 0.26);
  --text-main: #f8f0e7;
  --text-soft: #c6b5a8;
  --text-muted: #9d95a0;
  --accent: #ff8f57;
  --accent-strong: #ffbf66;
  --accent-deep: #3b1d12;
  --accent-soft: rgba(255, 143, 87, 0.14);
  --mint: #92f0d5;
  --input: rgba(255, 255, 255, 0.055);
  --shadow: 0 28px 60px rgba(4, 6, 14, 0.42);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background:
    radial-gradient(circle at top left, rgba(255, 191, 102, 0.14), transparent 22%),
    radial-gradient(circle at bottom right, rgba(146, 240, 213, 0.08), transparent 18%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
  color: var(--text-main);
  font-family: "Bahnschrift", "Aptos", "Segoe UI", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(100%, 1120px);
  margin: 0 auto;
  padding: 22px 18px 36px;
}

.hero-card,
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 22%),
    linear-gradient(180deg, rgba(18, 22, 34, 0.96), rgba(11, 14, 24, 0.94));
  box-shadow: var(--shadow);
  animation: float-up 320ms ease both;
}

.hero-card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  margin-bottom: 18px;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: auto -8% -36% auto;
  width: 240px;
  aspect-ratio: 1;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(255, 143, 87, 0.24), transparent 68%);
  pointer-events: none;
}

.hero-card h1,
.card h2 {
  margin: 6px 0 0;
  letter-spacing: -0.03em;
}

.hero-card h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  max-width: 12ch;
}

.hero-copy {
  max-width: 52ch;
  margin: 14px 0 0;
  color: var(--text-soft);
  line-height: 1.5;
  font-size: 1.02rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 22px;
}

.hero-stat,
.result-box {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
}

.hero-stat {
  padding: 16px 18px;
}

.hero-stat-label,
.result-label,
.field-label,
.settings-note,
.formula,
.source-list,
.pill {
  color: var(--text-soft);
}

.hero-stat-label,
.result-label {
  display: block;
  font-size: 0.82rem;
}

.hero-stat-value,
.result-value {
  display: block;
  margin-top: 8px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.hero-stat-value {
  font-size: clamp(1.25rem, 3vw, 1.8rem);
}

.result-value {
  font-size: clamp(1.08rem, 3vw, 1.5rem);
}

.accent {
  color: var(--mint);
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--accent-strong);
}

.settings-card,
.sources-card {
  padding: 24px;
  margin-bottom: 18px;
}

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

.card-head.compact {
  margin-bottom: 18px;
}

.ghost-button,
.preset-button,
.pill {
  border-radius: 999px;
}

.ghost-button {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.ghost-button:hover,
.ghost-button:focus-visible {
  border-color: var(--line-strong);
  background: rgba(255, 191, 102, 0.1);
  outline: none;
}

.settings-grid,
.calc-grid {
  display: grid;
  gap: 16px;
}

.settings-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 18px;
}

.calc-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.calc-card {
  padding: 22px;
}

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

.field-label {
  font-size: 0.86rem;
}

input,
select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-sm);
  background: var(--input);
  color: var(--text-main);
}

input:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 143, 87, 0.16);
}

.money-input,
.percent-input {
  position: relative;
}

.money-prefix,
.percent-suffix {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.money-prefix {
  left: 14px;
}

.percent-suffix {
  right: 14px;
}

.money-input input {
  padding-left: 32px;
}

.percent-input input {
  padding-right: 32px;
}

.settings-note {
  margin: 16px 0 0;
  line-height: 1.5;
  font-size: 0.92rem;
}

.pill {
  flex: 0 0 auto;
  align-self: center;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.8rem;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 16px;
}

.preset-button {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.preset-button:hover,
.preset-button:focus-visible,
.preset-button.is-active {
  outline: none;
  border-color: rgba(255, 191, 102, 0.42);
  background: rgba(255, 191, 102, 0.12);
}

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

.result-box {
  padding: 16px;
}

.formula {
  min-height: 1.4em;
  margin: 16px 0 0;
  font-size: 0.9rem;
  line-height: 1.5;
}

.source-list {
  margin: 18px 0 0;
  padding-left: 18px;
  line-height: 1.6;
}

@keyframes float-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .settings-grid,
  .calc-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 16px 12px 28px;
  }

  .hero-card,
  .settings-card,
  .sources-card,
  .calc-card {
    padding: 20px;
  }

  .hero-stats,
  .settings-grid,
  .calc-grid,
  .result-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .card-head {
    flex-direction: column;
  }

  .hero-card h1 {
    max-width: none;
  }
}