:root {
  --night-0: #0b0d1a;
  --night-1: #12142a;
  --night-2: #1b1e3a;
  --brass: #c9a24a;
  --brass-bright: #e8c878;
  --starlight: #eaeaf5;
  --ember: #d97a4a;
  --text: #f0ecdf;
  --text-dim: #a9a6b8;
  --glass: rgba(20, 22, 42, 0.72);
}

* { box-sizing: border-box; }

.hidden { display: none !important; }

html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: var(--night-0);
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

input, textarea {
  -webkit-user-select: auto;
  user-select: auto;
}

h1, h2, .display {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.mono { font-family: "JetBrains Mono", monospace; }

#sky {
  position: fixed;
  inset: 0;
  display: block;
  touch-action: none;
  cursor: crosshair;
}

.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  padding: calc(2rem + env(safe-area-inset-top, 0px)) calc(1.2rem + env(safe-area-inset-right, 0px)) calc(2rem + env(safe-area-inset-bottom, 0px)) calc(1.2rem + env(safe-area-inset-left, 0px));
  overflow-y: auto;
  text-align: center;
  background: radial-gradient(ellipse at 50% 30%, var(--night-2), var(--night-0) 70%);
}

.screen.hidden { display: none; }

.screen h1 { font-size: clamp(2.2rem, 7vw, 3.6rem); color: var(--brass-bright); margin: 0; }
.screen h2 { font-size: clamp(1.5rem, 5vw, 2.2rem); color: var(--brass-bright); margin: 0 0 0.4rem; }
.screen p.subtitle { color: var(--text-dim); margin: 0 0 1rem; max-width: 36ch; }

.btn {
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--glass);
  border: 1px solid var(--brass);
  border-radius: 999px;
  padding: 0.7rem 1.8rem;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, border-color 0.15s;
  min-width: 220px;
  min-height: 44px;
  touch-action: manipulation;
}
.btn:hover { background: rgba(201, 162, 74, 0.18); border-color: var(--brass-bright); }
.btn:active { transform: scale(0.97); }
.btn.secondary { border-color: var(--text-dim); opacity: 0.85; }
.btn.danger { border-color: var(--ember); color: var(--ember); }
.btn.small { min-width: auto; padding: 0.45rem 1rem; font-size: 0.85rem; min-height: 38px; }

.menu-stack { display: flex; flex-direction: column; gap: 0.7rem; align-items: center; }

.mode-grid {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 640px;
}
.mode-card {
  background: var(--glass);
  border: 1px solid rgba(201, 162, 74, 0.4);
  border-radius: 16px;
  padding: 1.4rem;
  width: 230px;
  cursor: pointer;
  transition: border-color 0.15s, transform 0.1s;
  touch-action: manipulation;
}
.mode-card:hover { border-color: var(--brass-bright); transform: translateY(-2px); }
.mode-card h3 { margin: 0 0 0.4rem; color: var(--brass-bright); font-family: "Cormorant Garamond", serif; font-style: italic; }
.mode-card p { margin: 0; font-size: 0.85rem; color: var(--text-dim); }
.mode-card .progress { margin-top: 0.6rem; font-size: 0.8rem; color: var(--brass); font-family: "JetBrains Mono", monospace; }
.mode-card-levels { width: 320px; cursor: default; }
.mode-card-levels:hover { transform: none; }

.level-grid {
  margin-top: 0.7rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(38px, 1fr));
  gap: 0.4rem;
  max-height: 260px;
  overflow-y: auto;
  padding-right: 0.3rem;
}
.level-btn {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid rgba(201, 162, 74, 0.4);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  cursor: pointer;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.level-btn:hover { border-color: var(--brass-bright); color: var(--text); }
.level-btn.done { background: rgba(201, 162, 74, 0.22); border-color: var(--brass); color: var(--brass-bright); }

.settings-panel, .achievements-panel {
  background: var(--glass);
  border: 1px solid rgba(201, 162, 74, 0.3);
  border-radius: 16px;
  padding: 1.5rem 1.8rem;
  max-width: 420px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  max-height: 70vh;
  overflow-y: auto;
}

.setting-row { display: flex; flex-direction: column; gap: 0.4rem; align-items: flex-start; text-align: left; }
.setting-row label { font-size: 0.85rem; color: var(--text-dim); display: flex; justify-content: space-between; width: 100%; }
.setting-row input[type="range"] { width: 100%; accent-color: var(--brass); }
.setting-row input[type="checkbox"] { accent-color: var(--brass); width: 18px; height: 18px; }
.row-inline { display: flex; align-items: center; gap: 0.6rem; width: 100%; justify-content: space-between; }

.ach-list { display: flex; flex-direction: column; gap: 0.5rem; text-align: left; }
.ach-item {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  padding: 0.5rem 0.7rem;
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  opacity: 0.45;
}
.ach-item.unlocked { opacity: 1; background: rgba(201, 162, 74, 0.1); }
.ach-icon { font-size: 1.3rem; width: 1.6rem; text-align: center; }
.ach-text h4 { margin: 0; font-size: 0.95rem; color: var(--brass-bright); }
.ach-text p { margin: 0; font-size: 0.78rem; color: var(--text-dim); }

.toast-stack {
  position: fixed;
  top: calc(1.2rem + env(safe-area-inset-top, 0px));
  right: calc(1.2rem + env(safe-area-inset-right, 0px));
  left: calc(1.2rem + env(safe-area-inset-left, 0px));
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  z-index: 50;
  pointer-events: none;
}
.toast {
  background: var(--glass);
  border: 1px solid var(--brass);
  border-radius: 12px;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  display: flex;
  gap: 0.6rem;
  align-items: center;
  animation: toast-in 0.25s ease-out, toast-out 0.4s ease-in 2.6s forwards;
  box-shadow: 0 4px 18px rgba(0,0,0,0.4);
  max-width: min(320px, 80vw);
}
@keyframes toast-in { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }
@keyframes toast-out { to { opacity: 0; transform: translateX(20px); } }

.hud {
  position: fixed;
  top: calc(1rem + env(safe-area-inset-top, 0px));
  left: calc(1rem + env(safe-area-inset-left, 0px));
  display: flex;
  gap: 0.6rem;
  z-index: 30;
}
.hud-btn {
  background: var(--glass);
  border: 1px solid rgba(201, 162, 74, 0.5);
  color: var(--text);
  border-radius: 999px;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.1rem;
  touch-action: manipulation;
}
.hud-btn:hover { border-color: var(--brass-bright); }

.hint-banner {
  position: fixed;
  bottom: calc(1.2rem + env(safe-area-inset-bottom, 0px));
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass);
  border: 1px solid rgba(201, 162, 74, 0.4);
  border-radius: 999px;
  padding: 0.5rem 1.2rem;
  font-size: 0.85rem;
  color: var(--text-dim);
  z-index: 20;
  text-align: center;
  max-width: 90vw;
}

.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 12, 0.72);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 60;
}
.confirm-box {
  background: var(--night-1);
  border: 1px solid var(--brass);
  border-radius: 14px;
  padding: 1.4rem;
  max-width: 320px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.confirm-actions { display: flex; gap: 0.6rem; justify-content: center; }

.help-list {
  text-align: left;
  font-size: 0.85rem;
  color: var(--text-dim);
  max-width: 320px;
  line-height: 1.6;
}

.credits-text { max-width: 420px; color: var(--text-dim); font-size: 0.9rem; line-height: 1.7; }
.credits-text strong { color: var(--brass-bright); }

@media (max-width: 480px) {
  .mode-card { width: 100%; }
  .settings-panel, .achievements-panel { max-height: 60vh; }
}