/* ============================================================
   智排座位 · 样式（三栏工作台 + 教室视图 + 打印规则）
   ============================================================ */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --violet: #7c3aed;
  --bg: #f4f6fb;
  --card: #ffffff;
  --ink: #1e2537;
  --ink-2: #55607a;
  --ink-3: #8a93aa;
  --line: #e4e8f2;
  --danger: #dc2626;
  --warn: #d97706;
  --ok: #16a34a;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 8px 24px -12px rgba(16, 24, 40, .18);
  --c1: #2563eb; --c2: #f59e0b; --c3: #16a34a; --c4: #db2777;
  --c5: #7c3aed; --c6: #0891b2; --c7: #ea580c; --c8: #65a30d;
}

* { box-sizing: border-box; }

/* hidden 必须始终生效（作者样式的 display 会压过 UA 的 [hidden] 规则） */
[hidden] { display: none !important; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

/* ---------------- 顶部栏 ---------------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 12px 22px;
  background: linear-gradient(120deg, #1e3a8a 0%, #2563eb 55%, #0ea5e9 100%);
  color: #fff;
  box-shadow: 0 6px 20px -10px rgba(37, 99, 235, .9);
  position: sticky; top: 0; z-index: 40;
}
.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }
.brand-logo {
  width: 44px; height: 44px; flex: 0 0 44px;
  display: grid; place-items: center; font-size: 24px;
  background: rgba(255, 255, 255, .16);
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 13px;
}
.brand-text h1 { margin: 0; font-size: 19px; letter-spacing: 1px; }
.brand-text p { margin: 2px 0 0; font-size: 12px; opacity: .82; }
.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.seed-chip {
  background: rgba(255, 255, 255, .18);
  border: 1px solid rgba(255, 255, 255, .35);
  padding: 5px 12px; border-radius: 999px; font-size: 12px;
  max-width: 34vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.topbar .btn { background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .32); color: #fff; }
.topbar .btn:hover { background: rgba(255, 255, 255, .26); }

/* ---------------- 通用控件 ---------------- */
.btn {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 9px; padding: 7px 13px; font-size: 13px; cursor: pointer;
  transition: .15s; font-family: inherit; line-height: 1.4;
}
.btn:hover { border-color: var(--primary); color: var(--primary); background: #f5f9ff; }
.btn:active { transform: translateY(1px); }
.btn.sm { padding: 4px 9px; font-size: 12px; border-radius: 7px; }
.btn.wide { width: 100%; margin-top: 8px; }
.btn.big { padding: 11px 26px; font-size: 15px; font-weight: 700; border-radius: 11px; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-ghost-danger { color: var(--danger); border-color: #f3d0d0; background: #fff; }
.btn-ghost-danger:hover { background: #fdf2f2; border-color: var(--danger); color: var(--danger); }
.btn-row { display: flex; gap: 7px; flex-wrap: wrap; align-items: center; }
.btn-col { display: flex; flex-direction: column; gap: 8px; }
.btn-col .btn { margin-top: 0; }
.flex-spacer { flex: 1; }
.icon-btn {
  width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-size: 14px; color: var(--ink-2);
}
.icon-btn:hover { border-color: var(--primary); color: var(--primary); }

.select, .input {
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: 9px; padding: 7px 10px; font-size: 13px; font-family: inherit;
  outline: none; transition: .15s;
}
.select:focus, .input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.select.sm { padding: 5px 8px; font-size: 12px; }
.select.wide { width: 100%; }
.num {
  width: 58px; border: 1px solid var(--line); border-radius: 8px;
  padding: 6px 8px; font-size: 13px; text-align: center; font-family: inherit; outline: none;
}
.num:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.num.seed { width: 130px; text-align: left; }
.x { color: var(--ink-3); }

.mini { font-size: 12px; color: var(--ink-3); }
.tip { font-size: 12px; color: var(--ink-3); line-height: 1.65; margin-top: 8px; }
.tip b { color: var(--ink-2); }
.notice {
  font-size: 12px; color: var(--ink-2); background: #f7f9fe;
  border: 1px dashed #cfd9f0; border-radius: 9px; padding: 8px 10px; margin: 9px 0;
  line-height: 1.7;
}
.notice b { color: var(--primary); }

.kpi-row { display: flex; flex-wrap: wrap; gap: 6px; }
.kpi {
  background: #f6f8fd; border: 1px solid var(--line); border-radius: 8px;
  padding: 3px 9px; font-size: 12px; color: var(--ink-2);
}
.kpi b { color: var(--ink); }

.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip {
  border: 1px solid var(--line); background: #fff; border-radius: 999px;
  padding: 3px 10px; font-size: 12px; cursor: pointer; transition: .12s; color: var(--ink-2);
}
.chip:hover { border-color: var(--primary); color: var(--primary); }
.chip.on { background: #eafaf0; border-color: #9fd9b5; color: var(--ok); }
.chip.absent { background: #fdf1f1; border-color: #f0c3c3; color: var(--danger); text-decoration: line-through; }

.check-row { display: flex; flex-wrap: wrap; gap: 5px; }
.check-row label {
  display: inline-flex; align-items: center; gap: 4px;
  border: 1px solid var(--line); border-radius: 7px; padding: 3px 8px;
  font-size: 12px; cursor: pointer; color: var(--ink-2); background: #fff; user-select: none;
}
.check-row label:has(input:checked) { border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); }
.check-row input { accent-color: var(--primary); margin: 0; }

.seg { display: inline-flex; background: #eef1f8; border: 1px solid var(--line); border-radius: 10px; padding: 3px; gap: 3px; }
.seg button {
  border: 0; background: transparent; border-radius: 7px; padding: 5px 12px;
  font-size: 12.5px; cursor: pointer; color: var(--ink-2); font-family: inherit; transition: .15s;
}
.seg button:hover { color: var(--primary); }
.seg button.on { background: #fff; color: var(--primary); font-weight: 700; box-shadow: 0 1px 4px rgba(16, 24, 40, .12); }

/* ---------------- 三栏骨架 ---------------- */
.app {
  display: grid;
  grid-template-columns: 318px minmax(560px, 1fr) 336px;
  gap: 14px;
  padding: 14px;
  align-items: start;
}
.pane { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.card-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px; padding: 11px 14px; border-bottom: 1px solid var(--line);
}
.card-head h2 { margin: 0; font-size: 14px; letter-spacing: .5px; }
.card-body { padding: 12px 14px; }

/* ---------------- 左栏：名单 ---------------- */
.pane-left .card-body .btn-row { margin-bottom: 4px; }
.paste-panel {
  border: 1px solid var(--primary-light); background: #f5f9ff;
  border-radius: 10px; padding: 10px; margin: 8px 0;
}
.paste-title { font-size: 12.5px; font-weight: 700; color: var(--primary-dark); margin-bottom: 6px; }
.paste-panel textarea {
  width: 100%; height: 130px; resize: vertical; border: 1px solid var(--line);
  border-radius: 8px; padding: 8px; font-size: 12px; font-family: Consolas, "Microsoft YaHei", monospace;
  outline: none;
}
.paste-panel textarea:focus { border-color: var(--primary); }
.paste-panel .btn-row { margin-top: 8px; }

.table-scroll { max-height: 320px; overflow: auto; border: 1px solid var(--line); border-radius: 9px; }
.stu-table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.stu-table th, .stu-table td { padding: 5px 7px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
.stu-table th {
  position: sticky; top: 0; background: #f7f9fd; z-index: 2;
  font-size: 11.5px; color: var(--ink-3); font-weight: 600;
}
.stu-table tr:hover td { background: #f7faff; }
.stu-table tr.absent td { color: var(--ink-3); background: #fdf7f7; }
.stu-table .c-name { font-weight: 600; color: var(--ink); }
.stu-table tr.absent .c-name { color: var(--ink-3); text-decoration: line-through; }
.stu-table .tags { display: inline-flex; gap: 3px; }
.tg { font-size: 10px; padding: 0 4px; border-radius: 5px; line-height: 15px; display: inline-block; }
.tg.g-pin { background: #fff3e0; color: #b45309; }
.tg.g-bind { background: #e8f7ee; color: #15803d; }
.tg.g-excl { background: #fdecec; color: #b91c1c; }
.tg.g-talk { background: #f3ecff; color: #6d28d9; }
.tg.g-zone { background: #e6f2ff; color: #1d4ed8; }
.row-act { display: flex; gap: 4px; justify-content: flex-end; }
.row-act button {
  border: 1px solid var(--line); background: #fff; border-radius: 6px;
  width: 24px; height: 22px; font-size: 11px; cursor: pointer; color: var(--ink-3);
}
.row-act button:hover { border-color: var(--primary); color: var(--primary); }
.row-act button.del:hover { border-color: var(--danger); color: var(--danger); }
.empty-tip { padding: 18px 10px; text-align: center; color: var(--ink-3); font-size: 12.5px; }

/* ---------------- 中栏：工具条 / 教室 ---------------- */
.toolbar-card .card-body { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.toolbar-card { padding: 10px 14px; display: flex; flex-wrap: wrap; gap: 14px 20px; align-items: center; }
.tb-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tb-label { font-size: 12px; color: var(--ink-3); white-space: nowrap; }

.room-card { padding: 14px; }
.board-wrap { display: flex; flex-direction: column; align-items: center; gap: 6px; margin-bottom: 12px; }
.blackboard {
  width: min(92%, 620px); text-align: center; letter-spacing: 8px;
  background: linear-gradient(180deg, #14532d, #166534);
  color: #bbf7d0; border-radius: 8px; padding: 8px 0; font-size: 13px;
  border: 4px solid #7c5a3a; box-shadow: 0 3px 10px -4px rgba(0, 0, 0, .4);
}
.podium {
  background: #eef1f8; border: 1px solid var(--line); color: var(--ink-3);
  font-size: 11.5px; padding: 2px 22px; border-radius: 6px; letter-spacing: 3px;
}
.room-scroll { overflow-x: auto; padding-bottom: 4px; }
#room { display: inline-block; min-width: 100%; }

.seat-row { display: flex; justify-content: center; gap: 7px; margin-bottom: 8px; align-items: stretch; }
.seat-row .aisle { width: 16px; flex: 0 0 16px; position: relative; }
.seat-row .aisle::before {
  content: ""; position: absolute; left: 50%; top: 6%; bottom: 6%;
  border-left: 2px dashed #d7dded;
}
#room[data-mode="group"] .seat-row:nth-of-type(2n) { margin-bottom: 20px; }
#room[data-mode="horseshoe"] .seat-row { margin-bottom: 8px; }

.seat {
  width: 74px; min-height: 50px; flex: 0 0 74px;
  border: 2px solid #c9d4ee; background: var(--seat-bg, #f5f8ff);
  border-radius: 9px; padding: 4px 5px; cursor: pointer;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 1px; transition: transform .12s, box-shadow .12s, border-color .12s;
  position: relative; user-select: none; text-align: center;
}
.seat:hover { transform: translateY(-2px); box-shadow: 0 6px 14px -8px rgba(16, 24, 40, .5); border-color: var(--primary); z-index: 2; }
.seat .s-name {
  font-size: 13px; font-weight: 700; color: var(--ink); line-height: 1.25;
  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.seat .s-meta { font-size: 10px; color: var(--ink-3); line-height: 1.2; display: flex; gap: 3px; align-items: center; }
.seat .s-tags { position: absolute; top: 2px; right: 3px; font-size: 9px; letter-spacing: 1px; }
.seat.vacant {
  background: repeating-linear-gradient(45deg, #fafbfe, #fafbfe 6px, #f2f4fa 6px, #f2f4fa 12px);
  border-style: dashed; border-color: #dfe4f1;
}
.seat.vacant .s-name { color: #b6bed2; font-weight: 500; font-size: 12px; }
.seat.disabled {
  background: #f6f7fb; border: 2px dotted #d6dbe9;
}
.seat.disabled .s-name { color: #c3c9d9; font-size: 11px; font-weight: 400; }
.seat.absent { opacity: .55; filter: grayscale(.7); }
.seat.selected { border-color: var(--violet); box-shadow: 0 0 0 3px rgba(124, 58, 237, .28); }
.seat.drag-over { border-color: var(--ok); box-shadow: 0 0 0 3px rgba(22, 163, 74, .3); }
.seat.edit-target { border-color: var(--warn); }
#room.editing .seat:hover { border-color: var(--warn); }

.room-foot {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-top: 10px;
  border-top: 1px solid var(--line); padding-top: 9px;
}
.legend { display: flex; gap: 10px; flex-wrap: wrap; font-size: 11.5px; color: var(--ink-2); }
.legend i {
  display: inline-block; width: 11px; height: 11px; border-radius: 3px;
  border: 1.5px solid #b9c5e4; margin-right: 4px; vertical-align: -1px;
}
.legend .lg { display: inline-flex; align-items: center; }

/* ---------------- 策略卡 ---------------- */
.strat-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
}
.sc {
  border: 1.5px solid var(--line); background: #fff; border-radius: 10px;
  padding: 8px 9px; cursor: pointer; text-align: left; font-family: inherit;
  display: flex; flex-direction: column; gap: 2px; transition: .14s;
}
.sc:hover { border-color: var(--primary); background: #f7faff; }
.sc.on { border-color: var(--primary); background: var(--primary-light); box-shadow: 0 2px 10px -6px var(--primary); }
.sc .sc-i { font-size: 15px; }
.sc .sc-t { font-size: 13px; font-weight: 700; color: var(--ink); }
.sc .sc-d { font-size: 11px; color: var(--ink-3); line-height: 1.4; }
.sc.on .sc-d { color: var(--primary-dark); opacity: .8; }

.action-row {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line);
}
.rot-wrap { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--ink-2); }

/* ---------------- 右栏：评分 / 统计 ---------------- */
.score-wrap { position: relative; width: 132px; margin: 2px auto 12px; }
.ring { width: 132px; height: 132px; transform: rotate(-90deg); }
.ring-bg { fill: none; stroke: #eef1f8; stroke-width: 11; }
.ring-fg {
  fill: none; stroke: var(--primary); stroke-width: 11; stroke-linecap: round;
  stroke-dasharray: 314.16; stroke-dashoffset: 314.16; transition: stroke-dashoffset .6s, stroke .3s;
}
.score-num {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-size: 13px; color: var(--ink-3);
}
.score-num b { font-size: 34px; color: var(--ink); line-height: 1; display: block; text-align: center; }
.score-num span { display: block; text-align: center; font-size: 11px; }

.dim-row { display: flex; align-items: center; gap: 7px; margin-bottom: 6px; font-size: 12px; }
.dim-row .d-name { width: 78px; flex: 0 0 78px; color: var(--ink-2); }
.dim-row .d-bar { flex: 1; height: 8px; background: #eef1f8; border-radius: 5px; overflow: hidden; }
.dim-row .d-bar i { display: block; height: 100%; border-radius: 5px; background: var(--primary); transition: width .5s; }
.dim-row .d-val { width: 30px; text-align: right; color: var(--ink-3); font-size: 11.5px; }

#warnBox { font-size: 12.5px; }
.wn-ok { color: var(--ok); font-weight: 600; }
.wn-item {
  display: flex; gap: 6px; align-items: flex-start;
  background: #fdf6ec; border: 1px solid #f5e0bc; color: #92400e;
  border-radius: 8px; padding: 6px 8px; margin-bottom: 6px; line-height: 1.5;
}
.wn-item.hard { background: #fdf1f1; border-color: #f3c6c6; color: #991b1b; }
.wn-item.info { background: #eef4ff; border-color: #ccdcfb; color: #1e40af; }
.wn-fix {
  margin-left: auto; flex: 0 0 auto; border: 1px solid currentColor; background: transparent;
  color: inherit; border-radius: 7px; font-size: 11.5px; padding: 2px 8px; cursor: pointer; opacity: .85;
}
.wn-fix:hover { opacity: 1; }

.chart-title { margin: 12px 0 6px; }
#rowChart svg { width: 100%; height: auto; display: block; }

.hist-item {
  display: flex; align-items: center; gap: 8px; font-size: 12px;
  border: 1px solid var(--line); border-radius: 9px; padding: 6px 9px; margin-bottom: 6px;
}
.hist-item .h-main { flex: 1; min-width: 0; }
.hist-item .h-main b { color: var(--ink); }
.hist-item .h-main div { color: var(--ink-3); font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hist-item .h-score { font-weight: 700; color: var(--primary); }
.hist-item button {
  border: 1px solid var(--line); background: #fff; border-radius: 6px;
  font-size: 11px; padding: 2px 7px; cursor: pointer; color: var(--ink-2); font-family: inherit;
}
.hist-item button:hover { border-color: var(--primary); color: var(--primary); }
.hist-item button.del:hover { border-color: var(--danger); color: var(--danger); }

/* ---------------- 弹窗 ---------------- */
.modal {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(15, 23, 42, .5); backdrop-filter: blur(2px);
  display: grid; place-items: center; padding: 20px;
}
.modal-box {
  background: #fff; border-radius: 16px; width: min(620px, 100%);
  max-height: 88vh; display: flex; flex-direction: column;
  box-shadow: 0 24px 60px -20px rgba(15, 23, 42, .5); overflow: hidden;
}
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--line);
}
.modal-head h3 { margin: 0; font-size: 15px; }
.modal-body { padding: 16px 18px; overflow: auto; }
.modal-foot {
  display: flex; align-items: center; gap: 9px;
  padding: 12px 18px; border-top: 1px solid var(--line); background: #fafbfe;
}
.help-box { width: min(760px, 100%); }
.help-box h4 { margin: 16px 0 6px; font-size: 14px; color: var(--primary-dark); }
.help-box h4:first-child { margin-top: 0; }
.help-box ol, .help-box ul { margin: 6px 0; padding-left: 20px; }
.help-box li { margin-bottom: 5px; }
.help-box table { width: 100%; border-collapse: collapse; font-size: 12.5px; margin: 8px 0; }
.help-box th, .help-box td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; }
.help-box th { background: #f7f9fd; }
.help-box a { color: var(--primary); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 14px; }
.fg { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.fg > span { width: 92px; flex: 0 0 92px; color: var(--ink-2); }
.fg .select, .fg .input { flex: 1; min-width: 0; }

/* 随机点名 */
.draw-box { width: min(520px, 100%); }
.draw-stage {
  background: linear-gradient(135deg, #1e3a8a, #2563eb 60%, #0ea5e9);
  border-radius: 14px; color: #fff; text-align: center;
  padding: 34px 16px; margin-bottom: 14px; min-height: 110px;
  display: grid; place-items: center;
}
#drawName { font-size: 34px; font-weight: 800; letter-spacing: 4px; }
.draw-ctrl { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; }
.draw-ctrl .fg { flex: 1; }

/* ---------------- 提示条 ---------------- */
#toast {
  position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%);
  background: rgba(30, 37, 55, .95); color: #fff; padding: 10px 18px;
  border-radius: 10px; font-size: 13px; z-index: 90;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, .6); max-width: 80vw;
}
#toast.err { background: rgba(153, 27, 27, .96); }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1360px) {
  .app { grid-template-columns: 300px minmax(480px, 1fr); }
  .pane-right { grid-column: 1 / -1; flex-direction: row; flex-wrap: wrap; }
  .pane-right > .card { flex: 1 1 300px; }
}
@media (max-width: 940px) {
  .app { grid-template-columns: 1fr; }
  .pane-right { flex-direction: column; }
  .brand-text p { display: none; }
}

/* ---------------- 打印 ---------------- */
@media print {
  @page { size: A4 landscape; margin: 10mm; }
  html, body { background: #fff; }
  .topbar, .pane-left, .pane-right, .toolbar-card, .strat-card,
  .room-foot .tip, #toast, .modal { display: none !important; }
  .app { display: block; padding: 0; }
  .pane { display: block; }
  .card { border: 0; box-shadow: none; }
  .room-card { padding: 0; }
  .blackboard { border-width: 2px; }
  .seat { break-inside: avoid; border-color: #666 !important; }
  .print-head { display: block !important; }
}

.print-head { display: none; text-align: center; margin-bottom: 8px; }
.print-head h2 { margin: 0 0 3px; font-size: 17px; }
.print-head div { font-size: 12px; color: #444; }