/* ตลาดจำลองการรับซื้อเม็ดกาแฟ — สไตล์ร่วมของทุกหน้า (ไม่พึ่งไฟล์จากอินเทอร์เน็ต ใช้ใน LAN ได้) */
:root {
  --bg: #f5efe6;
  --card: #ffffff;
  --ink: #2a1c12;
  --muted: #7b6a5c;
  --line: #e7ddd0;
  --soft: #faf6f0;
  --accent: #7a4a28;
  --accent-2: #a8693b;
  --accent-ink: #ffffff;
  --ok: #23774a;
  --ok-bg: #e5f4ea;
  --warn: #9a6200;
  --warn-bg: #fdf1d8;
  --bad: #b42318;
  --bad-bg: #fde8e6;
  --info: #1d5fbf;
  --info-bg: #e6eefb;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(42, 28, 18, .06), 0 4px 16px rgba(42, 28, 18, .05);
  --font: system-ui, -apple-system, "Segoe UI", "Sarabun", "Noto Sans Thai", "Leelawadee UI", Tahoma, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 var(--font);
  font-variant-numeric: tabular-nums;
}
[hidden] { display: none !important; }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5rem; }
h1 { font-size: 1.5rem; }
h2 { font-size: 1.15rem; }
h3 { font-size: 1rem; }
p { margin: .25rem 0 .75rem; }
a { color: var(--accent); }
small, .muted { color: var(--muted); }
.num { text-align: right; white-space: nowrap; }

/* ---------- แถบบน ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: .75rem;
  padding: .6rem 1rem;
  background: var(--accent); color: var(--accent-ink);
}
.topbar .brand { font-weight: 700; white-space: nowrap; }
.topbar .who { margin-left: auto; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topbar button { flex: none; }
.conn { width: .6rem; height: .6rem; border-radius: 50%; background: #9be3b5; flex: none; }
.conn.off { background: #ffb4a9; animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .3; } }

main { max-width: 1100px; margin: 0 auto; padding: 1rem; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1rem; box-shadow: var(--shadow); margin-bottom: 1rem; min-width: 0;
}
.card.narrow { max-width: 420px; margin: 3rem auto; }
.grid { display: grid; gap: 1rem; grid-template-columns: 1fr; }
.grid > .card { margin-bottom: 0; }
.stack > * + * { margin-top: 1rem; }
@media (min-width: 820px) {
  .grid.two { grid-template-columns: 1fr 1fr; }
  .grid.three { grid-template-columns: repeat(3, 1fr); }
  .grid.side { grid-template-columns: 2fr 1fr; }
}
.section-gap { margin-top: 1rem; }

/* ---------- ปุ่มและฟอร์ม ---------- */
button, .btn {
  font: inherit; font-weight: 600; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  padding: .55rem .9rem; border-radius: 10px; min-height: 44px;
  text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: .35rem;
}
button:hover:not(:disabled), .btn:hover { border-color: var(--accent-2); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.primary:hover:not(:disabled) { background: #6a3f21; }
button.danger { color: var(--bad); border-color: #f1c6c1; }
button.ghost { background: transparent; }
.topbar button.ghost { color: var(--accent-ink); border-color: rgba(255,255,255,.45); min-height: 36px; padding: .3rem .7rem; }
button.small { min-height: 34px; padding: .25rem .6rem; font-size: .9rem; }
input, select, textarea {
  font: inherit; color: var(--ink); background: #fff;
  border: 1px solid #d8ccbd; border-radius: 10px; padding: .55rem .7rem; min-height: 44px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-2); outline-offset: 1px; border-color: var(--accent-2); }
textarea { min-height: 120px; resize: vertical; }
label > span { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .2rem; }
label.check { display: flex; align-items: center; gap: .5rem; min-height: 44px; }
label.check input { width: 1.2rem; height: 1.2rem; min-height: 0; }
.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.row > * { flex: none; }
.form-grid { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); align-items: end; }
.error { color: var(--bad); }
.msg { min-height: 1.4em; margin: .4rem 0 0; font-size: .95rem; }
.msg.ok { color: var(--ok); }
.msg.error { color: var(--bad); }

/* ---------- ป้ายสถานะ ---------- */
.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .1rem .55rem; border-radius: 999px; font-size: .85rem; font-weight: 600;
  background: var(--soft); color: var(--muted); border: 1px solid var(--line); white-space: nowrap;
}
.pill.ok, .pill.sold { background: var(--ok-bg); color: var(--ok); border-color: #bfe3cc; }
.pill.warn, .pill.lost { background: var(--warn-bg); color: var(--warn); border-color: #f2d9a6; }
.pill.bad, .pill.rejected { background: var(--bad-bg); color: var(--bad); border-color: #f5c2bc; }
.pill.info { background: var(--info-bg); color: var(--info); border-color: #c4d6f5; }
.phase { font-weight: 700; }
.phase[data-phase="bidding"] { background: var(--ok-bg); color: var(--ok); border-color: #bfe3cc; }
.phase[data-phase="results"] { background: var(--info-bg); color: var(--info); border-color: #c4d6f5; }
.phase[data-phase="paused"] { background: var(--warn-bg); color: var(--warn); border-color: #f2d9a6; }
.phase[data-phase="finished"] { background: #eee6f7; color: #5b3a8a; border-color: #d9c8ee; }

/* ---------- แถบสถานะเกม ---------- */
.status-strip {
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
  margin-bottom: 1rem;
}
.status-strip .round { font-weight: 700; }
.clock {
  margin-left: auto; font-size: 2rem; font-weight: 800; letter-spacing: .02em;
  padding: .1rem .7rem; border-radius: 12px; background: var(--card); border: 1px solid var(--line);
  min-width: 5.5ch; text-align: center;
}
.clock.urgent { color: #fff; background: var(--bad); border-color: var(--bad); }
.clock.paused { color: var(--warn); }
.banner {
  padding: .75rem 1rem; border-radius: 12px; margin-bottom: 1rem;
  background: var(--info-bg); color: #173e7a; border: 1px solid #c4d6f5;
}
.banner.warn { background: var(--warn-bg); color: #6b4500; border-color: #f2d9a6; }
.banner.done { background: #eee6f7; color: #3f2766; border-color: #d9c8ee; }

/* ---------- สต๊อกและตัวเลข ---------- */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.chip {
  display: inline-flex; align-items: baseline; gap: .35rem;
  padding: .3rem .6rem; border-radius: 10px; background: var(--soft); border: 1px solid var(--line);
}
.chip b { color: var(--accent); }
.chip.zero { opacity: .4; }
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem; margin-top: .75rem; }
@media (min-width: 560px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat { background: var(--soft); border-radius: 10px; padding: .5rem .7rem; min-width: 0; }
.stat .label { font-size: .8rem; color: var(--muted); }
.stat .value { font-size: 1.15rem; font-weight: 700; overflow: hidden; text-overflow: ellipsis; }

/* ---------- ตาราง ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 -.25rem; padding: 0 .25rem; }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { padding: .45rem .5rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-size: .8rem; color: var(--muted); font-weight: 600; white-space: nowrap; }
tr.me td { background: #fff4e3; font-weight: 600; }
tr.dim td { color: var(--muted); }
td .sub { display: block; font-size: .8rem; color: var(--muted); }

/* ---------- ผลรอบ (หน้าผู้ขาย) ---------- */
.result-list { display: grid; gap: .5rem; }
.result-item { background: var(--soft); border: 1px solid var(--line); border-radius: 10px; padding: .6rem .75rem; }
.result-item > div + div { margin-top: .2rem; }
.result-item .sub { display: block; font-size: .85rem; color: var(--muted); }
@media (min-width: 980px) { .result-list { grid-template-columns: repeat(3, 1fr); } }

/* ---------- การ์ดคำสั่งซื้อ (หน้าผู้ขาย) ---------- */
.orders { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 980px) { .orders { grid-template-columns: repeat(3, 1fr); } }
.order { margin-bottom: 0; display: flex; flex-direction: column; }
.order-head { display: flex; align-items: center; justify-content: space-between; gap: .5rem; margin-bottom: .25rem; }
.order-head .want { font-size: 1.35rem; font-weight: 800; }
.order-head .want b { color: var(--accent); }
.order .ref { font-size: .9rem; color: var(--muted); }
.order .fields { display: grid; gap: .6rem; grid-template-columns: 1fr 1fr; }
.order .fields label:first-child { grid-column: 1 / -1; }
.quick { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .6rem; }
.quick button { min-height: 36px; padding: .2rem .55rem; font-size: .85rem; font-weight: 600; }
.hint { font-size: .9rem; margin: .6rem 0 0; }
.hint .warn { color: var(--warn); display: block; }
.hint .bad { color: var(--bad); display: block; }
.order .actions { display: flex; gap: .5rem; margin-top: .6rem; }
.order .actions .primary { flex: 1; }
.offer-state { margin-top: auto; padding-top: .75rem; border-top: 1px dashed var(--line); font-size: .95rem; }
.order.submitted { border-color: #9fd4b3; }
.order.dirty { border-color: #f0c97a; }

/* ---------- หน้าผู้สอน ---------- */
.control-bar {
  position: sticky; top: 52px; z-index: 5;
  display: flex; flex-wrap: wrap; gap: .5rem; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .6rem .8rem; margin-bottom: 1rem; box-shadow: var(--shadow);
}
.control-bar .clock { font-size: 1.5rem; margin-left: 0; }
.control-bar .spacer { flex: 1; }
.dot { display: inline-block; width: .55rem; height: .55rem; border-radius: 50%; background: #cbbfb2; margin-right: .3rem; }
.dot.on { background: #2fbf6b; }
.codes-print { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: .5rem; }
.code-card { border: 1px dashed #999; border-radius: 8px; padding: .6rem; }
.code-card .code { font: 700 1.6rem/1.2 ui-monospace, Menlo, Consolas, monospace; letter-spacing: .12em; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; letter-spacing: .06em; }
details > summary { cursor: pointer; font-weight: 700; }
pre.log { white-space: pre-wrap; font-size: .8rem; background: var(--soft); padding: .6rem; border-radius: 8px; max-height: 240px; overflow: auto; }

/* ---------- กระดานหน้าห้อง (จอใหญ่ พื้นเข้ม) ---------- */
body.board {
  --bg: #17100b; --card: #241912; --ink: #f7efe5; --muted: #bba795; --line: #3a2b20; --soft: #2d2017;
  --accent: #e0a46b; --accent-2: #f2be8b;
  font-size: clamp(16px, 1.25vw, 24px);
}
body.board main { max-width: none; padding: 1.25rem 2rem; }
.board-head { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1.25rem; }
.board-head h1 { font-size: 2em; margin: 0; color: var(--accent); }
.board-head .round { font-size: 1.6em; font-weight: 800; }
.board-head .clock { font-size: 3.2em; background: var(--card); color: var(--ink); border-color: var(--line); }
.board-head .clock.urgent { background: var(--bad); }
.board .order-card { text-align: center; padding: 1.25rem; }
.board .order-card .big { font-size: 2.6em; font-weight: 800; color: var(--accent); line-height: 1.1; }
.board .order-card .qty { font-size: 1.5em; font-weight: 700; }
.board .order-card .res { margin-top: .6rem; font-size: 1.05em; }
.board .pill { font-size: .8em; }
.board .pill.ok { background: #173a26; color: #9be3b5; border-color: #24583a; }
.board .pill.warn { background: #3d2d0c; color: #ffd27a; border-color: #5c4413; }
.board .pill.bad { background: #43160f; color: #ffb4a9; border-color: #66231a; }
.board .pill.info { background: #13284a; color: #a9c7ff; border-color: #1f3d6e; }
.board table { font-size: 1em; }
.board tr.dim td { color: #8f7d6e; }
.board .join { font-size: 1.6em; font-weight: 800; color: var(--accent); word-break: break-all; }
.board .phase { font-size: 1em; }
.board .phase[data-phase="bidding"] { background: #173a26; color: #9be3b5; border-color: #24583a; }
.board .phase[data-phase="results"] { background: #13284a; color: #a9c7ff; border-color: #1f3d6e; }
.board .phase[data-phase="paused"] { background: #3d2d0c; color: #ffd27a; border-color: #5c4413; }
.board .phase[data-phase="finished"] { background: #2e2140; color: #d8c4f5; border-color: #45325f; }

@media print {
  .topbar, .no-print { display: none !important; }
  body { background: #fff; }
}