/* 后台样式：在 styles.css 基础上做密度更高的管理台 */
body.admin { background: #070809; }
body.admin::before { opacity: 0.6; }

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; position: relative; z-index: 1; }
.login-card { width: 100%; max-width: 380px; border: 1px solid var(--line); background: var(--panel); padding: 28px 26px 24px; position: relative; }
.login-card::before { content: ""; position: absolute; top: -1px; left: -1px; width: 44px; height: 2px; background: var(--amber); }
.login-card h1 { margin: 12px 0 4px; font-size: 22px; font-weight: 700; }
.login-card p { margin: 0 0 22px; font-size: 12.5px; color: var(--dim-2); }

.wrap { position: relative; z-index: 1; max-width: 1180px; margin: 0 auto; padding: 0 24px 64px; }
.a-top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0 16px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.a-top .l { display: flex; align-items: center; gap: 12px; }
.a-top h1 { margin: 0; font-size: 16px; font-weight: 600; }
.a-top .sub { font-family: var(--mono); font-size: 10px; color: var(--dim-2); letter-spacing: 0.18em; white-space: nowrap; }
.foot-note { margin: 26px 0 0; max-width: 92ch; line-height: 1.85; font-family: var(--sans); font-size: 12.5px; letter-spacing: 0; color: var(--dim); }
.foot-note code { font-family: var(--mono); font-size: 11.5px; color: var(--amber); background: rgba(255, 176, 46, 0.08); padding: 1px 5px; }
.a-top .r { display: flex; align-items: center; gap: 10px; }

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 20px; }
.kpi { background: var(--ink-2); padding: 16px 16px 15px; }
.kpi span { font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.16em; color: var(--dim-2); display: block; }
.kpi b { display: block; font-family: var(--mono); font-size: 30px; line-height: 1.15; font-weight: 600; letter-spacing: -0.03em; margin-top: 7px; }
.kpi b i { font-style: normal; font-size: 13px; color: var(--dim-2); letter-spacing: 0; }
.kpi.amber b { color: var(--amber); }
.kpi.green b { color: var(--green); }
.kpi small { display: block; margin-top: 4px; font-size: 11px; color: var(--dim-2); }

.split { display: grid; grid-template-columns: 1.55fr 1fr; gap: 20px; margin-top: 22px; }
.card { border: 1px solid var(--line); background: var(--ink-2); }
.card-h { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.card-h h2 { margin: 0; font-size: 13.5px; font-weight: 600; }
.card-h span { font-family: var(--mono); font-size: 9.5px; color: var(--dim-2); letter-spacing: 0.14em; }
.card-b { padding: 16px; }

.split > .card { display: flex; flex-direction: column; }
.split > .card > .card-b { flex: 1; display: flex; flex-direction: column; }
.chart { display: flex; align-items: flex-end; gap: 10px; flex: 1 1 auto; min-height: 156px; padding-top: 6px; }
.chart .col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.chart .bars { display: flex; align-items: flex-end; gap: 3px; height: 100%; width: 100%; justify-content: center; }
.chart .bar { width: 14px; min-height: 2px; background: rgba(255, 176, 46, 0.28); transition: height 0.4s; position: relative; }
.chart .bar.t { background: var(--amber); }
.chart .bar:hover::after {
  content: attr(data-v); position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%);
  background: #000; color: var(--amber); font-family: var(--mono); font-size: 10px; padding: 2px 5px; white-space: nowrap;
}
.chart .lbl { font-family: var(--mono); font-size: 9px; color: var(--dim-2); letter-spacing: 0.04em; }
.legend { display: flex; gap: 14px; margin-top: 12px; font-size: 11px; color: var(--dim-2); }
.legend i { display: inline-block; width: 8px; height: 8px; margin-right: 5px; vertical-align: -1px; }
.legend .a i { background: rgba(255, 176, 46, 0.28); }
.legend .b i { background: var(--amber); }

.repeat-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 9px 0; border-bottom: 1px dashed var(--line); font-size: 13px; }
.repeat-row:last-child { border-bottom: 0; }
.repeat-row b { font-weight: 600; }
.repeat-row .n { font-family: var(--mono); color: var(--amber); font-size: 12px; }
.repeat-row .sub { font-family: var(--mono); font-size: 10px; color: var(--dim-2); }

.tabs { display: flex; gap: 2px; margin: 26px 0 0; border-bottom: 1px solid var(--line); }
.tab {
  background: transparent; border: 0; border-bottom: 2px solid transparent; color: var(--dim-2);
  padding: 10px 14px; font-size: 13.5px; cursor: pointer;
}
.tab:hover { color: var(--text); }
.tab.on { color: var(--text); border-bottom-color: var(--amber); }
.tab .cnt { font-family: var(--mono); font-size: 10px; color: var(--dim-2); margin-left: 6px; }

.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; padding: 14px 0; }
.toolbar input, .toolbar select {
  height: 34px; background: rgba(0, 0, 0, 0.4); border: 1px solid var(--line); color: var(--text);
  padding: 0 10px; font-size: 12.5px; outline: none; min-width: 0;
}
.toolbar input:focus, .toolbar select:focus { border-color: var(--amber); }
.toolbar .grow { flex: 1 1 180px; }
.toolbar .sep { width: 1px; height: 20px; background: var(--line); }
.toolbar .meta { font-family: var(--mono); font-size: 10.5px; color: var(--dim-2); letter-spacing: 0.06em; margin-left: auto; }

.table-wrap { border: 1px solid var(--line); overflow-x: auto; background: var(--ink-2); }
table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 820px; }
th {
  text-align: left; font-family: var(--mono); font-size: 9.5px; letter-spacing: 0.14em; color: var(--dim-2);
  font-weight: 400; padding: 10px 12px; border-bottom: 1px solid var(--line-2); white-space: nowrap; background: #0b0e0f; position: sticky; top: 0; z-index: 2;
}
td { padding: 11px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; white-space: nowrap; }
tbody tr:hover { background: rgba(232, 240, 236, 0.025); }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
td .code { font-family: var(--mono); font-size: 11.5px; color: var(--dim); letter-spacing: 0.06em; }
td .nm { font-weight: 600; }
td .id { font-family: var(--mono); font-size: 11.5px; color: var(--dim); }
td.trunc { max-width: 180px; overflow: hidden; text-overflow: ellipsis; }
tr.is-cancelled td { opacity: 0.42; }
tr.is-cancelled td .nm { text-decoration: line-through; }

.ops { display: flex; gap: 5px; }
.op {
  border: 1px solid var(--line-2); background: transparent; color: var(--dim); height: 26px; padding: 0 8px;
  font-size: 11.5px; cursor: pointer; white-space: nowrap;
}
.op:hover { color: var(--text); border-color: var(--dim); }
.op.on-ok { color: var(--green); border-color: rgba(70, 224, 160, 0.4); }
.op.on-no { color: var(--red); border-color: rgba(255, 106, 90, 0.35); }
.op[disabled] { opacity: 0.3; cursor: not-allowed; }

.empty { padding: 44px 16px; text-align: center; color: var(--dim-2); font-size: 13px; }

.cap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.cap-cell { background: var(--ink-2); padding: 12px; }
.cap-cell .d { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: 0.06em; }
.cap-cell .d b { color: var(--text); font-weight: 500; }
.cap-cell .u { font-size: 11px; color: var(--dim-2); margin: 3px 0 8px; }
.cap-cell input {
  width: 100%; height: 30px; background: rgba(0, 0, 0, 0.4); border: 1px solid var(--line);
  color: var(--amber); font-family: var(--mono); font-size: 13px; padding: 0 8px; outline: none;
}
.cap-cell input:focus { border-color: var(--amber); }
.cap-cell.today { background: #14181a; box-shadow: inset 2px 0 0 var(--amber); }
.cap-cell.full .u { color: var(--red); }

.set-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.set-row .lbl { font-size: 13.5px; font-weight: 500; }
.set-row .desc { font-size: 11.5px; color: var(--dim-2); margin-top: 2px; }
.set-row input { height: 34px; background: rgba(0, 0, 0, 0.4); border: 1px solid var(--line); color: var(--text); padding: 0 10px; font-size: 13px; outline: none; width: 200px; }
.set-row input:focus { border-color: var(--amber); }

.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translate(-50%, 12px); z-index: 60;
  background: var(--paper); color: var(--paper-ink); padding: 10px 16px; font-size: 13px; font-weight: 500;
  opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--red); color: #fff; }

@media (max-width: 900px) {
  .wrap { padding: 0 14px 48px; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .a-top h1 { font-size: 15px; }
}

/* 手机上表格收窄：隐藏学院/班级、手机、报名时间，只留核对要用的列 */
/* 条幅用 hidden 属性控制显隐（display:flex 会盖掉 UA 的 [hidden]） */
.pw-warn[hidden] { display: none; }

/* 姓名下面补学号：只在窄屏显示 */
.sub-id { display: none; }

@media (max-width: 700px) {
  .wrap { display: flex; flex-direction: column; }
  .a-top { order: 0; }
  .pw-warn { order: 1; }
  .kpis { order: 2; }
  .tabs { order: 3; }
  #viewToday, #viewRecords, #viewCapacity, #viewSettings { order: 3; }
  .split { order: 5; }
  .foot-note { order: 6; }
  .pw-warn { flex-wrap: wrap; }
  table { min-width: 0; }
  #viewToday th:nth-child(1), #viewToday td:nth-child(1),
  #viewToday th:nth-child(3), #viewToday td:nth-child(3),
  #viewToday th:nth-child(4), #viewToday td:nth-child(4),
  #viewToday th:nth-child(6), #viewToday td:nth-child(6),
  #viewRecords th:nth-child(3), #viewRecords td:nth-child(3),
  #viewRecords th:nth-child(4), #viewRecords td:nth-child(4) { display: none; }
  td, th { padding: 10px 6px; }
  td.trunc { max-width: 110px; }
  .sub-id { display: block; font-family: var(--mono); font-size: 10px; color: var(--dim-2); margin-top: 2px; letter-spacing: 0.04em; }
  .op-main { height: 28px; padding: 0 9px; font-size: 11.5px; }
  .ops { gap: 6px; }
  .op-link { height: 28px; padding: 0 3px; font-size: 11.5px; }
  .done-txt { font-size: 11px; }
  .ops { flex-wrap: nowrap; }
}

/* ---- 初始密码条幅 ---- */
.pw-warn {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin: 14px 0 0; padding: 10px 14px;
  border: 1px solid rgba(255, 176, 46, 0.35); background: rgba(255, 176, 46, 0.08);
  font-size: 12.5px; color: var(--text);
}
.pw-warn code { font-family: var(--mono); color: var(--amber); }
.pw-warn .btn { height: 28px; width: auto; flex: 0 0 auto; padding: 0 12px; font-size: 12px; clip-path: none; }

/* ---- 操作列：主动作 + 文字链 ---- */
.op-main {
  height: 30px; padding: 0 14px; cursor: pointer;
  border: 1px solid var(--amber); background: var(--amber); color: #17130a;
  font-family: inherit; font-size: 12px; font-weight: 700;
  clip-path: polygon(0 0, calc(100% - 6px) 0, 100% 6px, 100% 100%, 0 100%);
}
.op-main:hover { background: #ffc153; }
.op-main:disabled { opacity: 0.5; }
.op-link {
  height: 30px; padding: 0 8px; cursor: pointer;
  border: 0; background: none; color: var(--dim);
  font-family: inherit; font-size: 12px; text-decoration: underline;
  text-decoration-color: rgba(232, 240, 236, 0.25); text-underline-offset: 3px;
}
.op-link:hover { color: var(--text); }
.op-link.is-on { color: var(--red); text-decoration-color: currentColor; }
.op-link.danger:hover { color: var(--red); }
.ops.done { display: flex; align-items: center; gap: 10px; }
.done-txt { font-size: 12px; color: var(--dim); }

/* ---- 柱状图数值 ---- */
.chart .nums { display: flex; gap: 10px; justify-content: center; margin-top: 5px; }
.chart .nums b { font-family: var(--mono); font-size: 10px; font-weight: 400; color: var(--dim); }
.chart .nums b.t { color: rgba(255, 176, 46, 0.9); }
.chart { background-image: repeating-linear-gradient(to top, rgba(232, 240, 236, 0.07) 0 1px, transparent 1px 25%); }

/* ---- 凭证号看得清 ---- */
td .code { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.08em; color: var(--text); }