* {
  box-sizing: border-box;
}

:root {
  --bg-top: #1a0e00;
  --bg-bottom: #080400;
  --panel: rgba(20, 10, 0, 0.78);
  --panel-border: rgba(245, 158, 11, 0.28);
  --text-main: #fef9f0;
  --text-dim: #c4a46b;
  --accent: #f59e0b;
  --accent-rgb: 245, 158, 11;
  --tone-warn: #fb7185;
  --tone-warn-rgb: 251, 113, 133;
  --button-bg: linear-gradient(180deg, var(--accent), #d97706);
  --shadow: 0 18px 40px rgba(8, 3, 0, 0.34);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(var(--accent-rgb), 0.12), transparent 34%),
    linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
  color: var(--text-main);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.game-shell {
  width: min(100vw, 480px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 12px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 8px;
}

.topbar,
.playfield,
.thumb-zone {
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
}

.topbar-copy {
  display: grid;
  gap: 2px;
}

.eyebrow,
.control-label,
.label {
  color: var(--text-dim);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.title {
  font-size: 22px;
  line-height: 1;
}

#restart,
.touch-controls button,
.diff-btn {
  border: 1px solid var(--accent);
  border-radius: 14px;
  background: var(--button-bg);
  color: #fff7ed;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.playfield {
  min-height: 0;
  padding: 10px;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr);
  gap: 8px;
}

.hud {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  align-items: stretch;
}

.stat-card,
.status-wrap {
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  background: rgba(25, 12, 0, 0.9);
  min-height: 0;
  display: grid;
  gap: 2px;
  align-content: center;
  padding: 8px 10px;
}

.status-wrap {
  grid-column: 1 / -1;
  background: linear-gradient(180deg, rgba(25, 12, 0, 0.96), rgba(12, 5, 0, 0.96));
}

.status-wrap[data-tone="milestone"] {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(var(--accent-rgb), 0.16);
}

.status-wrap[data-tone="warning"] {
  border-color: var(--tone-warn);
  box-shadow: inset 0 0 0 1px rgba(var(--tone-warn-rgb), 0.16);
}

.hud strong {
  font-size: 18px;
  line-height: 1.1;
}

#status {
  font-size: 16px;
  line-height: 1.25;
}

#restart,
.touch-controls button,
.diff-btn {
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

#restart {
  padding: 10px 14px;
  white-space: nowrap;
}

#restart:hover,
#restart:focus-visible,
.touch-controls button:hover,
.touch-controls button:focus-visible,
.diff-btn:hover,
.diff-btn:focus-visible {
  filter: brightness(1.08);
}

.difficulty-select {
  display: flex;
  gap: 6px;
}

.diff-btn {
  flex: 1;
  padding: 6px 4px;
  font-size: 12px;
  background: rgba(20, 10, 0, 0.6);
  border-color: rgba(var(--accent-rgb), 0.28);
  border-radius: 10px;
  opacity: 0.7;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
}

.diff-btn.active {
  background: var(--button-bg);
  border-color: var(--accent);
  opacity: 1;
}

.board-wrap {
  min-height: 0;
  display: grid;
  align-items: center;
  justify-items: center;
  overflow: hidden;
}

#game {
  display: block;
  max-width: 100%;
  max-height: 100%;
  border: 1px solid rgba(var(--accent-rgb), 0.35);
  border-radius: 8px;
  background: #1e293b;
  box-shadow:
    inset 0 0 0 1px rgba(var(--accent-rgb), 0.06),
    0 0 18px rgba(var(--accent-rgb), 0.1);
  cursor: pointer;
}

.touch-controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.touch-controls .control-label {
  display: none;
}

.thumb-zone {
  padding: 10px;
  display: grid;
  place-items: center;
  min-height: 80px;
}

.mode-buttons {
  display: flex;
  gap: 8px;
  width: 100%;
}

.mode-buttons button {
  flex: 1;
  padding: 14px 8px;
  touch-action: manipulation;
  -webkit-user-select: none;
  user-select: none;
  background: rgba(20, 10, 0, 0.6);
  border-color: rgba(var(--accent-rgb), 0.28);
  opacity: 0.7;
}

.mode-buttons button.active {
  background: var(--button-bg);
  border-color: var(--accent);
  opacity: 1;
}

@media (max-width: 520px) {
  body {
    min-height: 100svh;
    overflow: hidden;
  }

  .game-shell {
    height: 100svh;
    min-height: 0;
    padding: 6px 8px 8px;
    gap: 6px;
    overflow: hidden;
  }

  .topbar,
  .playfield,
  .thumb-zone {
    border-radius: 16px;
  }

  .topbar {
    padding: 6px 10px;
  }

  .title {
    font-size: 19px;
  }

  #restart {
    padding: 8px 12px;
  }

  .playfield {
    padding: 7px;
    gap: 6px;
  }

  .hud {
    gap: 4px;
  }

  .stat-card,
  .status-wrap {
    border-radius: 12px;
    padding: 5px 8px;
  }

  .hud strong {
    font-size: 16px;
  }

  #status {
    font-size: 14px;
  }

  #game {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: calc(100svh - 320px);
  }

  .touch-controls {
    gap: 6px;
  }

  .thumb-zone {
    border-radius: 14px;
    padding: 0;
    min-height: 70px;
  }

  .mode-buttons button {
    font-size: 13px;
    padding: 10px 8px;
  }

  .diff-btn {
    font-size: 11px;
  }
}