:root {
  --bg-top: #fdf2d2;
  --bg-bottom: #f7c98c;
  --card: rgba(255, 248, 238, 0.82);
  --card-strong: rgba(255, 252, 247, 0.94);
  --ink: #1e1b18;
  --muted: #635a53;
  --accent: #b4492f;
  --accent-strong: #91341f;
  --accent-soft: rgba(180, 73, 47, 0.14);
  --line: rgba(74, 52, 44, 0.12);
  --shadow: 0 24px 70px rgba(96, 51, 28, 0.16);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Trebuchet MS", Verdana, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.75), transparent 28%),
    radial-gradient(circle at bottom right, rgba(255, 239, 204, 0.75), transparent 26%),
    linear-gradient(160deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.24);
  filter: blur(10px);
  z-index: 0;
}

body::before {
  top: -60px;
  right: -80px;
}

body::after {
  bottom: -100px;
  left: -70px;
}

.app-shell {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero-card,
.panel-card {
  backdrop-filter: blur(18px);
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.5);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 28px;
  border-radius: var(--radius-xl);
}

.eyebrow,
.panel-kicker,
.field-label {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

h1,
h2 {
  font-family: Georgia, "Palatino Linotype", serif;
  letter-spacing: -0.03em;
}

h1 {
  margin: 12px 0;
  font-size: clamp(2.3rem, 6vw, 4.5rem);
  line-height: 0.96;
  max-width: 12ch;
}

.hero-copy,
.panel-copy,
.result-note,
.field-card small,
.stat-card small,
.empty-state {
  color: var(--muted);
  line-height: 1.6;
}

.hero-copy {
  max-width: 62ch;
  margin: 0 0 24px;
  font-size: 1rem;
}

.control-grid,
.history-grid,
.action-row,
.mini-stats {
  display: grid;
  gap: 18px;
}

.control-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 22px;
}

.field-card,
.stat-card,
.result-panel,
.mini-stats article,
.panel-card {
  border-radius: var(--radius-lg);
}

.field-card,
.stat-card,
.mini-stats article,
.panel-card {
  background: var(--card-strong);
  border: 1px solid var(--line);
}

.field-card,
.stat-card {
  padding: 18px;
}

.field-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.field-card input {
  width: 100%;
  border: 1px solid rgba(145, 52, 31, 0.18);
  border-radius: 14px;
  padding: 14px 16px;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--ink);
  background: #fffdf9;
}

.field-card input:focus {
  outline: 3px solid rgba(180, 73, 47, 0.18);
  border-color: var(--accent);
}

.stat-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.stat-card strong {
  font-size: 1.15rem;
}

.result-panel {
  padding: 24px;
  margin-bottom: 22px;
  background:
    linear-gradient(135deg, rgba(180, 73, 47, 0.12), rgba(255, 255, 255, 0.7)),
    var(--card-strong);
  border: 1px solid rgba(180, 73, 47, 0.15);
  text-align: center;
}

.result-label {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.result-value {
  margin: 8px 0;
  font-family: Georgia, "Palatino Linotype", serif;
  font-size: clamp(4rem, 18vw, 8rem);
  line-height: 1;
  letter-spacing: -0.06em;
}

.result-note {
  margin: 0;
}

.action-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: 22px;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    background 160ms ease,
    color 160ms ease,
    opacity 160ms ease;
}

button:hover {
  transform: translateY(-1px);
}

button:active {
  transform: translateY(1px) scale(0.995);
}

.primary-button,
.secondary-button,
.text-button {
  border-radius: 16px;
  font-weight: 800;
}

.primary-button,
.secondary-button {
  min-height: 64px;
  padding: 16px 18px;
  font-size: 1rem;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent) 0%, #d16235 100%);
  color: #fff7f0;
  box-shadow: 0 18px 36px rgba(180, 73, 47, 0.28);
}

.secondary-button {
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid rgba(180, 73, 47, 0.16);
}

.secondary-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.mini-stats {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-stats article {
  padding: 18px;
}

.mini-stats span {
  display: block;
  color: var(--muted);
  margin-bottom: 6px;
}

.mini-stats strong {
  font-size: 1.7rem;
}

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

.panel-card {
  padding: 22px;
}

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

.panel-heading h2 {
  margin: 6px 0 0;
  font-size: 1.7rem;
}

.panel-copy {
  margin: 10px 0 16px;
}

.text-button {
  padding: 10px 12px;
  color: var(--accent-strong);
  background: rgba(180, 73, 47, 0.08);
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: #fffdfa;
}

.history-item strong {
  font-size: 1.25rem;
}

.history-meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.empty-state {
  margin: 6px 0 0;
}

@media (max-width: 820px) {
  .app-shell {
    width: min(100% - 20px, 1120px);
    padding-top: 20px;
  }

  .hero-card,
  .panel-card {
    padding: 18px;
  }

  .control-grid,
  .action-row,
  .history-grid,
  .mini-stats {
    grid-template-columns: 1fr;
  }

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

  .text-button {
    width: 100%;
  }
}