:root {
  --bg: #eef4ef;
  --paper: rgba(255, 252, 244, 0.94);
  --ink: #263021;
  --muted: #64705d;
  --line: rgba(85, 96, 68, 0.24);
  --teal: #008080;
  --green: #285a3f;
  --moss: #6d8b3d;
  --wood: #8b5a2b;
  --soil: #4b3427;
  --shadow: 0 18px 36px rgba(32, 44, 30, 0.13);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  line-height: 1.7;
  background:
    radial-gradient(circle at 18% 12%, rgba(255, 244, 187, 0.34), transparent 20%),
    radial-gradient(circle at 82% 6%, rgba(146, 171, 112, 0.22), transparent 28%),
    linear-gradient(180deg, rgba(215, 227, 205, 0.84), rgba(235, 229, 210, 0.92) 44%, #d7d0b9 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(58, 73, 48, 0.12) 0 2px, transparent 2px 16%),
    radial-gradient(ellipse at 50% 100%, rgba(49, 35, 24, 0.24), transparent 42%);
  opacity: 0.5;
}

button {
  font: inherit;
}

.page {
  position: relative;
  z-index: 1;
  width: min(1120px, calc(100% - 24px));
  margin: 0 auto;
  padding: 20px 0 44px;
}

.back-link {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--teal);
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover,
.back-link:focus-visible {
  text-decoration: underline;
}

.hero,
.panel,
.board-panel {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.34fr);
  gap: 22px;
  align-items: end;
  padding: 24px;
}

.hero-badge {
  display: inline-flex;
  margin: 0 0 10px;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(0, 128, 128, 0.1);
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 800;
}

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

h1 {
  margin-bottom: 8px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.25;
}

h2 {
  margin-bottom: 10px;
  font-size: 1.08rem;
}

.hero-copy {
  margin-bottom: 10px;
  color: var(--green);
  font-weight: 800;
}

.hero-text,
.panel-heading p,
.controls-panel li,
.lore-panel li {
  color: var(--muted);
}

.notice {
  padding: 14px 16px;
  border-left: 5px solid var(--moss);
  border-radius: 12px;
  background: rgba(243, 247, 232, 0.94);
  color: #4e5f32;
  font-weight: 700;
}

.game-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
  gap: 18px;
  align-items: start;
  margin-top: 18px;
}

.board-panel,
.panel {
  padding: 18px;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.status-chip {
  min-width: 92px;
  height: fit-content;
  padding: 7px 11px;
  border: 1px solid rgba(0, 128, 128, 0.25);
  border-radius: 999px;
  background: rgba(0, 128, 128, 0.08);
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 800;
  text-align: center;
}

.canvas-shell {
  position: relative;
  width: min(100%, 50vh, 430px);
  aspect-ratio: 1 / 2;
  margin: 0 auto;
  border: 8px solid #5e3c24;
  border-radius: 14px;
  background: #1f2b21;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.12), 0 18px 32px rgba(39, 35, 24, 0.2);
  overflow: hidden;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: #243024;
  touch-action: none;
}

.start-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 8px;
  padding: 18px;
  background: rgba(29, 39, 29, 0.72);
  color: #fff9e8;
  text-align: center;
}

.start-overlay.is-hidden {
  display: none;
}

.start-overlay strong {
  font-size: 1.35rem;
}

.side-panel {
  display: grid;
  gap: 14px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0;
}

.stats-grid div {
  padding: 12px;
  border: 1px solid rgba(85, 96, 68, 0.18);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.58);
}

.stats-grid dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.stats-grid dd {
  margin: 4px 0 0;
  font-size: 1.34rem;
  font-weight: 900;
  line-height: 1.1;
}

.humidity-stat {
  grid-column: span 2;
}

.humidity-stat dd {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

#humidityLabel {
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(0, 128, 128, 0.1);
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.2;
}

.humidity-meter {
  height: 12px;
  margin-top: 14px;
  border-radius: 999px;
  background: #d7dac8;
  overflow: hidden;
}

.humidity-meter span {
  display: block;
  width: 50%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #91b482, #28685a);
  transition: width 0.18s ease;
}

.humidity-note {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.65;
}

.controls-panel ul,
.lore-panel ol {
  margin: 8px 0 0;
  padding-left: 20px;
}

.control-label {
  margin: 14px 0 0;
  color: var(--green);
  font-size: 0.88rem;
  font-weight: 900;
}

button {
  min-height: 44px;
  border: 1px solid rgba(85, 96, 68, 0.34);
  border-radius: 10px;
  background: #fffdf7;
  color: var(--ink);
  font-weight: 800;
  cursor: pointer;
}

button:hover,
button:focus-visible {
  border-color: var(--teal);
  color: var(--teal);
}

.primary-button {
  width: 100%;
  background: var(--teal);
  border-color: var(--teal);
  color: #fff;
}

.primary-button:hover,
.primary-button:focus-visible {
  color: #fff;
  opacity: 0.92;
}

.mobile-pad {
  display: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.mobile-pad button {
  padding: 8px 6px;
  line-height: 1.35;
}

.mobile-pad button:last-child {
  grid-column: 1 / -1;
}

@media (max-width: 900px) {
  .hero,
  .game-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page {
    width: min(100% - 14px, 1120px);
    padding: 14px 0 28px;
  }

  .hero,
  .panel,
  .board-panel {
    padding: 14px;
    border-radius: 14px;
  }

  .panel-heading {
    flex-direction: column;
  }

  .canvas-shell {
    width: min(100%, 74vh);
    border-width: 6px;
  }

  .mobile-pad {
    display: grid;
  }
}