:root {
  --bg: #f4f3ef; --panel: #ffffff; --ink: #1c1b19; --muted: #6b6860; --line: #e2dfd7;
  --accent: #b4532a; --accent-ink: #ffffff; --ok: #15803d; --bad: #b91c1c; --soft: #f1ede4;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #161513; --panel: #201f1c; --ink: #ecebe6; --muted: #a19d93; --line: #34322d; --accent: #e07a4a; --accent-ink: #1b1a17; --ok: #4ade80; --bad: #f87171; --soft: #2a2925; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; overflow-x: hidden; }
button { font: inherit; color: inherit; border: 1px solid var(--line); background: var(--panel); border-radius: 10px; padding: 9px 14px; cursor: pointer; touch-action: manipulation; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }
button:disabled { opacity: .5; cursor: default; }

.gtop { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.gtop h1 { margin: 0; font-size: 18px; flex: 1; min-width: 0; } .gtop h1 span { color: var(--accent); font-size: 14px; }
.back { color: var(--muted); text-decoration: none; font-size: 13px; white-space: nowrap; }
.score { font-weight: 800; background: var(--soft); padding: 4px 12px; border-radius: 999px; white-space: nowrap; }
.score span { color: var(--accent); }

.steps { list-style: none; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 6px; margin: 12px auto 0; padding: 0 16px; max-width: 900px; }
.steps li { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 8px 4px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line); font-size: 12.5px; text-align: center; opacity: .55; }
.steps li b { font-size: 22px; }
.steps li.on { opacity: 1; border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 25%, transparent); }
.steps li.done { opacity: 1; } .steps li.done span::after { content: ' ✓'; color: var(--ok); }

.gmain { max-width: 900px; margin: 12px auto 40px; padding: 0 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 16px; }
.card h2 { margin: 0 0 4px; font-size: 20px; }
.card .lead { color: var(--muted); margin: 0 0 12px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-start; }
.col { flex: 1 1 260px; min-width: 0; }
.bar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.grow { flex: 1; }
.timer { font-weight: 700; color: var(--muted); }
.timer.low { color: var(--bad); }

/* Màn 1 — thiết kế */
.order { background: var(--soft); border-radius: 12px; padding: 12px; border: 1px dashed var(--line); }
.order b { color: var(--accent); }
.pick { margin: 10px 0 4px; font-size: 13px; color: var(--muted); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button { padding: 6px 10px; font-size: 13.5px; }
.chips button.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.sw { width: 34px; height: 34px; padding: 0; border-radius: 50%; border: 2px solid var(--line); }
.sw.on { outline: 3px solid var(--accent); outline-offset: 2px; }
.preview { display: flex; align-items: center; justify-content: center; min-height: 170px; background: repeating-linear-gradient(45deg, var(--soft) 0 10px, transparent 10px 20px); border-radius: 12px; }
.label { width: 210px; height: 84px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-weight: 800; letter-spacing: .12em; font-size: 24px; box-shadow: 0 6px 18px rgba(0,0,0,.18); transition: .2s; position: relative; }
.label small { font-size: 10px; letter-spacing: .1em; font-weight: 600; opacity: .85; }
.label::before, .label::after { content: ''; position: absolute; top: 8px; bottom: 8px; width: 0; border-left: 2px dashed currentColor; opacity: .5; }
.label::before { left: 12px; } .label::after { right: 12px; }

/* Màn 2 — gửi đơn */
.bins { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.bin { border: 2px dashed var(--line); border-radius: 14px; padding: 10px; min-height: 150px; }
.bin h3 { margin: 0 0 6px; font-size: 14px; }
.bin.send { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.tiles { display: flex; flex-wrap: wrap; gap: 6px; }
.tile { padding: 8px 10px; border-radius: 10px; font-size: 13.5px; }
.tile.ok { border-color: var(--ok); color: var(--ok); } .tile.bad { border-color: var(--bad); color: var(--bad); }
.pool { margin-top: 10px; min-height: 48px; }

/* Màn 3 & 5 — canvas */
canvas.play { width: 100%; height: auto; display: block; border-radius: 14px; background: #2b2a27; touch-action: none; }
.controls { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 8px; }
.controls button { padding: 16px; font-size: 18px; font-weight: 800; }
.machines { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 8px; }
.machines button { text-align: left; display: flex; gap: 8px; align-items: center; }
.machines button b { font-size: 26px; }
.machines button.ok { border-color: var(--ok); background: color-mix(in srgb, var(--ok) 12%, var(--panel)); }
.machines button.bad { border-color: var(--bad); }

/* Màn 4 — đóng gói */
.bags { display: flex; flex-wrap: wrap; gap: 6px; min-height: 60px; padding: 8px; background: var(--soft); border-radius: 12px; margin: 8px 0; }
.bag { width: 54px; height: 60px; border-radius: 8px 8px 14px 14px; background: color-mix(in srgb, var(--accent) 20%, var(--panel)); border: 2px solid var(--accent); display: flex; align-items: flex-end; justify-content: center; font-size: 12px; font-weight: 800; padding-bottom: 6px; animation: pop .25s; }
.bag.s { height: 46px; width: 44px; }
@keyframes pop { from { transform: scale(.4); } to { transform: scale(1); } }
.slips { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.slip { text-align: left; font-size: 13px; line-height: 1.35; }
.slip.on { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 30%, transparent); }
.carriers { display: grid; gap: 6px; }
.carrier { display: flex; justify-content: space-between; gap: 10px; text-align: left; }
.carrier.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--panel)); }

/* Kết quả */
.result { text-align: center; }
.stars { font-size: 34px; letter-spacing: 4px; }
.feedback { margin-top: 10px; padding: 10px 12px; border-radius: 12px; background: var(--soft); }
.feedback.good { background: color-mix(in srgb, var(--ok) 14%, var(--panel)); }
.feedback.bad { background: color-mix(in srgb, var(--bad) 12%, var(--panel)); }
.final table { margin: 10px auto; border-collapse: collapse; }
.final td { padding: 6px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.rank { font-size: 22px; font-weight: 800; color: var(--accent); margin: 6px 0; }

.toast { position: fixed; left: 50%; bottom: 20px; transform: translate(-50%, 40px); opacity: 0; background: #111827; color: #fff; padding: 10px 16px; border-radius: 12px; transition: .25s; pointer-events: none; max-width: calc(100vw - 32px); z-index: 50; text-align: center; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 600px) {
  .gtop h1 { font-size: 15px; } .gtop h1 span { display: none; }
  .steps li span { font-size: 11px; } .steps li b { font-size: 18px; }
  .bins, .slips { grid-template-columns: 1fr; }
  .label { width: 180px; height: 72px; font-size: 20px; }
}
canvas.play.tall { width: auto; max-width: 100%; height: min(60vh, 600px); margin: 0 auto; aspect-ratio: 420 / 600; }
@media (max-width: 600px) { .card .lead { font-size: 13.5px; } }

/* Form đơn hàng trong game (điền tuỳ thích) */
.form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.form label.wide { grid-column: 1 / -1; }
.form input { font: inherit; color: var(--ink); padding: 9px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--soft); min-width: 0; }
/* Màn 2 — soát phiếu */
table.sheet { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.sheet td { padding: 6px 6px; border-bottom: 1px solid var(--line); vertical-align: top; overflow-wrap: anywhere; }
table.sheet td:first-child { color: var(--muted); white-space: nowrap; width: 42%; }
tr.pickrow { cursor: pointer; }
tr.pickrow:hover td { background: var(--soft); }
tr.pickrow.marked td { background: color-mix(in srgb, var(--bad) 16%, var(--panel)); text-decoration: line-through; text-decoration-color: var(--bad); }
.slips.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 600px) { .form { grid-template-columns: 1fr; } .slips.three { grid-template-columns: 1fr; } table.sheet td:first-child { white-space: normal; } }