/* 程序回收系统 —— 样式表（仿 NOI 程序回收系统界面） */
:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --line: #e3e7ef;
  --line-strong: #d3d9e4;
  --text: #1f2430;
  --text-soft: #5b6472;
  --text-dim: #8a93a3;
  --blue: #1a63f0;
  --blue-dark: #1250cc;
  --blue-soft: #eaf1ff;
  --green: #0f8b4d;
  --green-soft: #e6f6ec;
  --red: #d93a3a;
  --red-soft: #fdeceb;
  --amber: #b7791f;
  --amber-soft: #fdf3e0;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 6px 20px rgba(16, 24, 40, .05);
  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }

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

.app {
  max-width: 1180px;
  margin: 0 auto;
  padding: 22px 18px 60px;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------- 登录 ---------------- */
.login-wrap {
  min-height: 82vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 420px;
  max-width: 100%;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 30px 30px 24px;
}

.login-card h1 {
  margin: 0 0 22px;
  font-size: 21px;
  font-weight: 700;
  text-align: center;
  letter-spacing: .5px;
}

.field { margin-bottom: 18px; }

.field label {
  display: block;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 6px;
  font-weight: 500;
}

.field .hint {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 6px;
  line-height: 1.5;
}

input[type=text],
input[type=password],
input[type=number],
input[type=datetime-local],
select {
  width: 100%;
  height: 40px;
  padding: 0 11px;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  font-family: inherit;
}

input:focus, select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 99, 240, .12);
}

input:disabled { background: #f6f7fa; color: var(--text-dim); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  padding: 0 16px;
  font-size: 14px;
  font-family: inherit;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: 7px;
  cursor: pointer;
  background: #fff;
  color: var(--text);
  transition: background .15s, border-color .15s, opacity .15s;
  white-space: nowrap;
}

.btn:disabled { cursor: not-allowed; opacity: .55; }

.btn-primary {
  width: 100%;
  height: 42px;
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  font-size: 15px;
}
.btn-primary:hover:not(:disabled) { background: var(--blue-dark); border-color: var(--blue-dark); }

.btn-submit {
  flex: 1;
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
}
.btn-submit:hover:not(:disabled) { background: var(--blue-dark); border-color: var(--blue-dark); }

.btn-view {
  flex: 1;
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.btn-view:hover:not(:disabled) { background: #0b7340; border-color: #0b7340; }

.btn-ghost {
  border-color: var(--line-strong);
  background: #fff;
  color: var(--text-soft);
}
.btn-ghost:hover:not(:disabled) { border-color: var(--blue); color: var(--blue); }

.btn-sm { height: 32px; padding: 0 11px; font-size: 13px; }

.login-foot {
  margin-top: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-dim);
}

.error-box {
  background: var(--red-soft);
  border: 1px solid #f6c7c4;
  color: var(--red);
  font-size: 13px;
  padding: 8px 11px;
  border-radius: 7px;
  margin-bottom: 14px;
  display: none;
}
.error-box.show { display: block; }

/* ---------------- 顶栏 ---------------- */
.top-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 22px 20px;
  position: relative;
  margin-bottom: 16px;
}

.top-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.exam-title {
  font-size: 19px;
  font-weight: 700;
  color: #1746c7;
  margin: 0 0 12px;
  letter-spacing: .3px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 26px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 500;
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  opacity: .85;
}
.badge-running { background: var(--green-soft); color: #0c7c45; border-color: #bfe8cf; }
.badge-ended { background: #eef0f4; color: #6b7382; border-color: #dde1e8; }
.badge-not_started { background: var(--amber-soft); color: var(--amber); border-color: #f2ddb4; }
.badge-locked { background: var(--amber-soft); color: var(--amber); border-color: #f2ddb4; }

.top-body {
  display: grid;
  grid-template-columns: minmax(240px, 300px) 1fr;
  gap: 28px;
  margin-top: 4px;
}

/* 准考证号 / 试题密码：大号红字，考生一眼可见 */
.stu-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 2px;
  flex-wrap: wrap;
}
.stu-label {
  flex: none;
  font-size: 12px;
  color: var(--text-dim);
}
.stu-uid {
  font-family: var(--mono);
  font-size: 21px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .5px;
  line-height: 1.3;
  word-break: break-all;
}
.stu-name {
  font-size: 14px;
  color: var(--text-soft);
  margin-bottom: 10px;
}

.stu-list {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--text-soft);
}
.stu-list li {
  position: relative;
  padding-left: 12px;
  margin: 3px 0;
}
.stu-list li::before {
  content: "·";
  position: absolute;
  left: 2px;
  color: var(--text-dim);
  font-weight: 700;
}

/* 考试流程 */
.flow h3 {
  font-size: 14.5px;
  font-weight: 700;
  margin: 2px 0 8px;
}
.flow ol {
  margin: 0;
  padding-left: 20px;
  font-size: 13px;
  color: var(--text-soft);
}
.flow li { margin: 4px 0; }
.flow b { color: var(--text); font-weight: 600; }
.pwd-big {
  display: inline-block;
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  color: #d92d20;
  background: #fef3f2;
  border: 1px solid #fbd5d1;
  border-radius: 6px;
  padding: 1px 10px;
  letter-spacing: 1.5px;
  line-height: 1.5;
  vertical-align: middle;
}
.pwd-empty {
  font-size: 13px;
  color: var(--text-dim);
}
.dl-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: 6px;
  font-weight: 600;
}
.dl-link.disabled { color: var(--text-dim); pointer-events: none; }

/* ---------------- 题目卡片 ---------------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  align-items: start;
  gap: 14px;
}

.pcard {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 13px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.pcard-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}
.pcard-title {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .2px;
}
.pcard-ver {
  font-size: 11.5px;
  color: var(--text-dim);
}

.pstate {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
}
.pstate .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: #c3c9d4;
  flex: none;
}
.pstate.done { color: #0c7c45; }
.pstate.done .dot { background: #16a34a; }
.pstate.todo { color: var(--text-dim); }

.sub-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 12.5px;
  color: var(--text-soft);
  background: #f7f9fc;
  border: 1px solid #edf0f5;
  border-radius: 7px;
  padding: 7px 9px;
}
.sub-info .row {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.sub-info .row span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sub-info svg { flex: none; color: var(--text-dim); }
.sub-info .fname { font-weight: 500; color: var(--text); }

.pick {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-soft);
  transition: border-color .15s, background .15s;
  width: 100%;
  text-align: left;
  font-family: inherit;
}
.pick:hover { border-color: var(--blue); background: #fafcff; }
.pick svg { flex: none; color: var(--blue); }
.pick .pick-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-dim);
}
.pick.has-file .pick-text { color: var(--text); }
.pick .arrow { color: var(--text-dim); flex: none; }

.pick-hint {
  color: #a8afbb;
  font-size: 12px;
  flex: none;
}

.prow {
  display: flex;
  gap: 9px;
}
.prow .btn { height: 36px; }
.prow .btn:only-child { flex: 1; }

.closed-tip {
  background: #f6f7fa;
  border: 1px dashed var(--line-strong);
  color: var(--text-dim);
  font-size: 12.5px;
  border-radius: 7px;
  padding: 8px 10px;
  text-align: center;
}

/* ---------------- 弹窗 / 代码 ---------------- */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(18, 22, 30, .5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px;
  z-index: 50;
  animation: fade .12s ease-out;
}
@keyframes fade { from { opacity: 0 } to { opacity: 1 } }

.code-panel {
  width: min(920px, 100%);
  height: min(78vh, 760px);
  background: #1e1e1e;
  border-radius: 9px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 18px 50px rgba(0, 0, 0, .38);
}

.code-head {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #2a2a2c;
  color: #e6e6e6;
  padding: 9px 12px 9px 14px;
  font-size: 13px;
  border-bottom: 1px solid #141414;
}
.code-head .name { font-family: var(--mono); font-weight: 500; }
.code-head .meta { color: #9aa0aa; font-size: 12px; }
.code-head .close {
  margin-left: auto;
  width: 26px; height: 26px;
  border: 0; border-radius: 5px;
  background: transparent;
  color: #b9bec7;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
}
.code-head .close:hover { background: #3a3a3d; color: #fff; }

.code-body {
  flex: 1;
  overflow: auto;
  padding: 12px 0;
  background: #1e1e1e;
}
.code-body pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.8px;
  line-height: 1.62;
  color: #d4d4d4;
  tab-size: 4;
}
.code-line { display: flex; }
.code-line .ln {
  flex: none;
  width: 52px;
  padding-right: 12px;
  text-align: right;
  color: #6a6f78;
  user-select: none;
  font-size: 12px;
}
.code-line .lc { white-space: pre-wrap; word-break: break-all; flex: 1; padding-right: 16px; }

.code-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 9px 12px;
  background: #252526;
  border-top: 1px solid #141414;
}
.code-foot .btn {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  height: 32px;
}

.tk-kw { color: #569cd6; }
.tk-st { color: #ce9178; }
.tk-cm { color: #6a9955; font-style: italic; }
.tk-nu { color: #b5cea8; }
.tk-pp { color: #c586c0; }

/* ---------------- 管理端 ---------------- */
.admin-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.admin-bar .spacer { flex: 1; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  margin-bottom: 14px;
}
.panel h2 {
  font-size: 15px;
  margin: 0 0 12px;
  font-weight: 700;
}

.grid-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px 16px;
  align-items: end;
}
.grid-form .field { margin: 0; }
.grid-form label { font-size: 12.5px; color: var(--text-soft); }

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}
table.ov {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  font-size: 13px;
  min-width: 760px;
}
table.ov th, table.ov td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}
table.ov thead th {
  position: sticky;
  top: 0;
  background: #f7f9fc;
  font-weight: 600;
  color: var(--text-soft);
  z-index: 1;
  border-bottom: 1px solid var(--line-strong);
}
table.ov tbody tr:hover td { background: #fbfcfe; }
table.ov td.uid { font-family: var(--mono); font-size: 12.5px; }
table.ov td.cell { cursor: default; }
.cell-ok { color: #0c7c45; }
.cell-ok .t { color: var(--text-dim); font-size: 11.5px; margin-left: 4px; }
.cell-none { color: #c2c8d2; }
.cell-link {
  cursor: pointer;
  border-bottom: 1px dashed #9fc0f5;
}
.cell-link:hover { color: var(--blue); }

/* 名单编辑 */
table.ov.edit td { padding: 5px 8px; }
.cell-input {
  width: 100%;
  min-width: 86px;
  height: 32px;
  padding: 0 8px;
  font-size: 13px;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  outline: none;
  font-family: inherit;
}
.cell-input.mono { font-family: var(--mono); letter-spacing: .3px; }
.cell-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 99, 240, .1);
}
.import-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
}
.import-box {
  flex: 1;
  min-height: 74px;
  padding: 8px 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  resize: vertical;
  outline: none;
}
.import-box:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(26, 99, 240, .1);
}
.label-sub {
  color: #d92d20;
  font-size: 12px;
  font-weight: 400;
  margin-left: 4px;
}

/* ---------------- toast ---------------- */
.toast-root {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 90;
  pointer-events: none;
}
.toast {
  background: #23283a;
  color: #fff;
  font-size: 13px;
  padding: 9px 16px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .22);
  animation: pop .16s ease-out;
  max-width: 78vw;
}
.toast.err { background: #a32626; }
.toast.ok { background: #14693e; }
@keyframes pop { from { opacity: 0; transform: translateY(6px) } to { opacity: 1; transform: none } }

.hidden { display: none !important; }

.ic { display: inline-flex; align-items: center; flex: none; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 760px) {
  .app { padding: 14px 12px 44px; }
  .top-body { grid-template-columns: 1fr; gap: 16px; }
  .top-card { padding: 14px 15px 16px; }
  .exam-title { font-size: 17px; }
  .cards { grid-template-columns: 1fr; }
  .modal-mask { padding: 0; }
  .code-panel { height: 100vh; border-radius: 0; }
}