:root {
  --ink: #2e261c;
  --bg-soft: #fdf4e3;
  --bg-deep: #d5e8df;
  --panel: #fffdf7;
  --border: #d8c9b3;
  --accent: #0c7d67;
  --accent-dark: #075645;
  --accent-light: #e2fbf4;
  --danger: #b53b2d;
  --shadow: 0 10px 26px rgba(0, 0, 0, 0.09);
  font-family: "Gill Sans", "Trebuchet MS", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 20px;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 8%, rgba(255, 255, 255, 0.8), transparent 36%),
    radial-gradient(circle at 90% 16%, rgba(255, 255, 255, 0.5), transparent 30%),
    linear-gradient(165deg, var(--bg-soft), var(--bg-deep));
}

.game-shell {
  width: min(1100px, 100%);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.hero {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  letter-spacing: 0.02em;
}

.hero p {
  margin: 4px 0 0;
  color: #5f5342;
}

.stats {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

.stat-card h2 {
  margin: 0;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6d5f4d;
}

.stat-card p {
  margin: 6px 0 0;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  font-weight: 700;
}

.layout {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(260px, 340px) minmax(0, 1fr);
  align-items: start;
}

.click-column {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 16px;
  box-shadow: var(--shadow);
}

.milk-button {
  width: 100%;
  border: none;
  background: linear-gradient(180deg, #e9fff8, #c6f4e8);
  border-radius: 18px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

.milk-button:focus-visible {
  outline: 3px solid rgba(12, 125, 103, 0.4);
  outline-offset: 3px;
}

.carton {
  width: min(180px, 85%);
  height: 220px;
  background: linear-gradient(180deg, #fdfdfd, #dfecf7);
  border: 3px solid #9eb7d4;
  border-radius: 16px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 16px rgba(9, 52, 99, 0.18);
}

.carton-top {
  position: absolute;
  left: 20%;
  top: -16px;
  width: 60%;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(180deg, #dde9f9, #c3d4ee);
  border: 2px solid #9eb7d4;
}

.carton-mark {
  position: absolute;
  top: 36px;
  left: 50%;
  transform: translateX(-50%);
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  font-weight: 800;
  letter-spacing: 0.14em;
  color: #2f6ea8;
}

.carton-wave {
  position: absolute;
  left: -20%;
  width: 140%;
  height: 56%;
  bottom: -22%;
  background: radial-gradient(circle at 30% 12%, rgba(255, 255, 255, 0.9), rgba(206, 235, 255, 0.9) 45%, rgba(149, 199, 236, 0.95));
  border-radius: 45% 45% 0 0;
}

.carton-hint {
  font-weight: 700;
  color: #0f5c4a;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.milk-button.popped .carton {
  animation: pop 180ms ease;
}

@keyframes pop {
  0% {
    transform: scale(1);
  }

  45% {
    transform: scale(0.93) rotate(-2deg);
  }

  100% {
    transform: scale(1);
  }
}

.click-feedback {
  min-height: 24px;
  margin: 10px 0 0;
  text-align: center;
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--accent-dark);
  opacity: 0;
  transform: translateY(4px);
  transition: transform 150ms ease, opacity 150ms ease;
}

.click-feedback.visible {
  opacity: 1;
  transform: translateY(-2px);
}

.shop-column {
  display: grid;
  gap: 14px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 12px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.panel-head h2 {
  margin: 0;
  font-size: 1.2rem;
}

.buy-amount-group {
  display: inline-flex;
  gap: 6px;
}

.buy-amount-group button,
.controls button,
.buy-button,
.upgrade-button {
  border: 1px solid #2f7b67;
  background: #fff;
  color: #164738;
  border-radius: 10px;
  padding: 7px 11px;
  font-weight: 700;
  cursor: pointer;
}

.buy-amount-group button.active {
  background: var(--accent);
  color: #fff;
}

.shop-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.shop-item {
  border: 1px solid #dfd2c1;
  border-radius: 12px;
  background: #fff;
  padding: 10px;
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.shop-copy h3 {
  margin: 0;
  font-size: 1rem;
}

.shop-copy p {
  margin: 4px 0 0;
  color: #5f5342;
  font-size: 0.93rem;
}

.shop-copy .meta {
  font-size: 0.86rem;
}

.owned {
  color: #0f6a56;
  font-weight: 700;
}

.buy-button,
.upgrade-button {
  min-width: 82px;
}

.buy-button:disabled,
.upgrade-button:disabled {
  border-color: #bbb;
  color: #888;
  background: #f3f3f3;
  cursor: not-allowed;
}

.empty {
  margin: 2px 0 0;
  color: #6f6558;
  font-size: 0.92rem;
}

.achievement-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.achievement-item {
  border: 1px dashed #cab69a;
  border-radius: 12px;
  padding: 10px;
  background: #fffaf0;
}

.achievement-item h3 {
  margin: 0;
  font-size: 0.97rem;
}

.achievement-item p {
  margin: 4px 0 0;
  font-size: 0.9rem;
  color: #5c503f;
}

.achievement-item .achievement-state {
  margin-top: 6px;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 700;
}

.achievement-item.unlocked {
  border: 1px solid #9fd0bb;
  background: #eafcf3;
}

.achievement-item.unlocked .achievement-state {
  color: #0e6e57;
}

.achievement-item.locked .achievement-state {
  color: #8d7a5f;
}

.controls {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 12px;
}

.control-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

#sound-btn.muted,
#music-btn.muted {
  border-color: #8d7a5f;
  color: #6b5a41;
  background: #f4ece0;
}

.music-volume-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.music-volume-row label {
  font-weight: 700;
  color: #4f4639;
}

#music-volume {
  width: min(260px, 100%);
  accent-color: #1d8a72;
}

#music-volume:disabled {
  opacity: 0.5;
}
.status-note,
.message {
  margin: 8px 0 0;
  color: #635947;
}

.message {
  min-height: 20px;
  font-weight: 700;
  color: var(--accent-dark);
}

#reset-btn {
  border-color: #9f3a2f;
  color: #6f281f;
}

#reset-btn:hover {
  background: #fbe9e6;
}

@media (max-width: 900px) {
  body {
    padding: 14px;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .carton {
    max-width: 210px;
  }
}