:root {
  --bg: #f4efe6;
  --bg-alt: #e7dfd1;
  --card: rgba(255, 252, 246, 0.86);
  --ink: #1d1a16;
  --muted: #665e53;
  --line: rgba(29, 26, 22, 0.12);
  --accent: #d14c2f;
  --accent-strong: #a7341c;
  --accent-soft: rgba(209, 76, 47, 0.14);
  --green: #2c7a46;
  --red: #b5432d;
  --shadow: 0 20px 60px rgba(52, 38, 24, 0.12);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(209, 76, 47, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(67, 115, 171, 0.12), transparent 24%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}

button,
input {
  font: inherit;
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero,
.layout {
  display: grid;
  gap: 20px;
}

.hero {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  margin-bottom: 20px;
}

.eyebrow,
.section-label,
.panel-kicker,
.result-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.74rem;
  color: var(--muted);
}

.hero h1,
.card h2,
.monster-panel h3 {
  margin: 0;
  line-height: 1;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 5.8rem);
}

.hero-text {
  width: min(54ch, 100%);
  margin: 12px 0 0;
  font-size: 1.05rem;
  color: var(--muted);
}

.calc-description {
  margin: 10px 0 0;
  max-width: 72ch;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.45;
}

.mode-switch {
  display: inline-flex;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(12px);
}

.mode-button,
.ghost-button,
.primary-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease;
}

.mode-button,
.ghost-button {
  padding: 10px 16px;
  background: transparent;
  color: var(--ink);
}

.mode-button.is-active {
  background: var(--ink);
  color: #fff;
}

.primary-button {
  padding: 14px 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
}

.primary-button:hover,
.ghost-button:hover,
.mode-button:hover {
  transform: translateY(-1px);
}

.layout {
  grid-template-columns: 1.15fr 0.85fr;
  align-items: start;
}

.card {
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  padding: 24px;
}

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

.counter {
  margin: 0;
  color: var(--muted);
}

.battle-grid {
  display: grid;
  grid-template-columns: 1fr minmax(220px, 0.8fr) 1fr;
  gap: 16px;
  margin-top: 18px;
}

.monster-panel,
.field-panel,
.feedback-box,
.result-panel,
.guess-history li,
.input-wrap input {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.62);
}

.monster-panel,
.field-panel {
  padding: 18px;
}

.detail-list {
  margin: 14px 0 0;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 14px;
}

.detail-list dt {
  color: var(--muted);
}

.detail-list dd {
  margin: 0;
  text-align: right;
}

.field-list,
.guess-history {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

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

.field-list li {
  padding: 9px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
}

.guess-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  margin-top: 18px;
}

.input-wrap {
  display: grid;
  gap: 8px;
}

.input-wrap span {
  color: var(--muted);
  font-size: 0.92rem;
}

.input-wrap input {
  width: 100%;
  padding: 14px 16px;
  font-size: 1.15rem;
}

.feedback-box,
.result-panel {
  margin-top: 16px;
  padding: 16px 18px;
}

.feedback-box.is-high {
  color: var(--red);
  background: rgba(181, 67, 45, 0.08);
}

.feedback-box.is-low {
  color: var(--green);
  background: rgba(44, 122, 70, 0.08);
}

.feedback-box.is-correct {
  color: var(--ink);
  background: rgba(209, 76, 47, 0.14);
}

.result-panel h3 {
  margin: 6px 0 8px;
  font-size: 1.65rem;
}

.solution-subline {
  margin: 0;
  color: var(--muted);
}

.history-block {
  margin-top: 20px;
}

.guess-history {
  display: grid;
  gap: 10px;
}

.guess-history li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px;
}

.guess-history .history-hint {
  color: var(--muted);
}

@media (max-width: 980px) {
  .layout,
  .hero,
  .battle-grid,
  .guess-form {
    grid-template-columns: 1fr;
  }

  .mode-switch {
    width: fit-content;
  }
}