/* style.css — workshop chic: warm wood panel UI around a sky-blue board. */

:root {
  --ink: #2b3038;
  --paper: #fbf5ea;
  --panel: #f2e5cf;
  --panel-edge: #d9c4a0;
  --teal: #2ec4b6;
  --teal-dark: #199c8f;
  --coral: #ff5b5b;
  --gold: #ffd23f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background:
    radial-gradient(1200px 500px at 50% -100px, #fff7e8, transparent),
    var(--paper);
  color: var(--ink);
  font-family: ui-rounded, "Segoe UI", system-ui, -apple-system, sans-serif;
  user-select: none;
}

.load-error {
  margin: 40px auto;
  padding: 16px 24px;
  background: #ffe3e3;
  border: 2px solid var(--coral);
  border-radius: 12px;
  font-weight: 600;
}

/* ---------- header ---------- */

header {
  width: min(1120px, 96vw);
  display: flex;
  align-items: baseline;
  gap: 18px;
  padding: 14px 6px 8px;
}

h1 {
  margin: 0;
  font-size: 1.45rem;
  letter-spacing: 0.2px;
}

#level-tabs { display: flex; gap: 6px; }

.tab {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 2px solid var(--panel-edge);
  background: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s, background 0.15s;
}
.tab:hover { transform: translateY(-2px); }
.tab.active { background: var(--teal); border-color: var(--teal-dark); color: #fff; }

.level-title { margin-left: auto; text-align: right; }
#level-name { font-weight: 800; font-size: 1.05rem; }
.level-title small { display: block; opacity: 0.65; }

/* ---------- layout ---------- */

main {
  display: flex;
  gap: 14px;
  width: min(1120px, 96vw);
  align-items: flex-start;
}

/* ---------- sidebar / palette ---------- */

#sidebar {
  flex: 0 0 210px;
  background: var(--panel);
  border: 2px solid var(--panel-edge);
  border-radius: 16px;
  padding: 12px;
  box-shadow: 0 4px 0 var(--panel-edge);
}

#sidebar h2 {
  margin: 2px 4px 10px;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  opacity: 0.7;
}

#palette {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.pal-item {
  position: relative;
  background: #fff;
  border: 2px solid var(--panel-edge);
  border-radius: 12px;
  padding: 6px 4px 4px;
  text-align: center;
  cursor: grab;
  transition: transform 0.1s, box-shadow 0.1s;
}
.pal-item:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 4px 10px rgba(60,50,30,0.18); }
.pal-item:active { cursor: grabbing; }
.pal-item.depleted { opacity: 0.35; cursor: not-allowed; transform: none; box-shadow: none; }
body.simulating .pal-item { opacity: 0.45; cursor: default; transform: none; }

.pal-preview { display: block; margin: 0 auto; pointer-events: none; }
.pal-label { font-size: 0.72rem; font-weight: 700; }
.pal-count {
  position: absolute; top: -7px; right: -7px;
  background: var(--teal); color: #fff;
  font-size: 0.7rem; font-weight: 800;
  padding: 2px 7px;
  border-radius: 999px;
  border: 2px solid #fff;
}
.pal-item.depleted .pal-count { background: #9aa3ad; }

/* ---------- controls ---------- */

.controls { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }

button {
  font: inherit;
  font-weight: 700;
  color: var(--ink);
  background: #fff;
  border: 2px solid var(--panel-edge);
  border-radius: 12px;
  padding: 8px 12px;
  cursor: pointer;
  transition: transform 0.08s, filter 0.12s;
}
button:hover:not(:disabled) { transform: translateY(-1px); filter: brightness(1.05); }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.45; cursor: default; }

button.big { font-size: 1.1rem; padding: 12px; }
button.go {
  background: var(--teal);
  border-color: var(--teal-dark);
  color: #fff;
  box-shadow: 0 3px 0 var(--teal-dark);
}
button.go:disabled { box-shadow: none; }

.tip { font-size: 0.75rem; opacity: 0.7; margin: 12px 4px 2px; line-height: 1.5; }
kbd {
  background: #fff;
  border: 1px solid var(--panel-edge);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0 4px;
  font-family: inherit;
}

/* ---------- stage ---------- */

#stage {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 3px solid var(--panel-edge);
  box-shadow: 0 6px 0 var(--panel-edge), 0 14px 30px rgba(70,50,20,0.15);
  line-height: 0;
}

#board { display: block; touch-action: none; }

/* ---------- banner ---------- */

.banner {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(30, 35, 45, 0.35);
  backdrop-filter: blur(2px);
  transition: opacity 0.2s;
}
.banner.hidden { opacity: 0; pointer-events: none; }

.banner-card {
  background: var(--paper);
  border: 3px solid var(--panel-edge);
  border-radius: 20px;
  padding: 26px 38px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
  animation: pop-in 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  line-height: 1.4;
}
.banner.win .banner-card { border-color: var(--gold); }
.banner.fail .banner-card { border-color: var(--coral); }

@keyframes pop-in {
  from { transform: scale(0.6) translateY(20px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

#banner-title { font-size: 1.6rem; font-weight: 800; }
#banner-sub { margin: 6px 0 16px; opacity: 0.75; }
.banner-actions { display: flex; gap: 10px; justify-content: center; }

/* ---------- footer ---------- */

footer {
  width: min(1120px, 96vw);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 6px 20px;
  font-size: 0.85rem;
}
#status { font-weight: 600; opacity: 0.8; }
#hint { opacity: 0.65; text-align: right; }