:root {
  --blue: #1f6feb;
  --blue-dark: #12509e;
  --indigo: #4f46e5;
  --green: #16a34a;
  --green-soft: #e8f8ee;
  --amber: #d97706;
  --amber-soft: #fff7e6;
  --red: #dc2626;
  --red-soft: #feeceb;
  --bg: #f4f6fb;
  --card: #ffffff;
  --line: #e4e8f0;
  --text: #1b2333;
  --muted: #6b7688;
  --shadow: 0 2px 10px rgba(23, 43, 77, .06);
  --radius: 14px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  font-size: 14.5px;
  -webkit-tap-highlight-color: transparent;
}

a { color: var(--blue); text-decoration: none; }
.hidden { display: none !important; }

/* ---------------- 布局 ---------------- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 232px;
  flex: 0 0 232px;
  background: linear-gradient(180deg, #16233c 0%, #1b2b4a 100%);
  color: #e8eefb;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand { display: flex; gap: 10px; align-items: center; padding: 18px 16px 14px; }
.brand-logo {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  display: grid; place-items: center; font-size: 20px;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15px; }
.brand-text span { font-size: 11.5px; color: #9fb0cd; }

.nav { flex: 1; overflow-y: auto; padding: 6px 10px 10px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; margin-bottom: 3px;
  border-radius: 10px; color: #c8d5ec; font-size: 14px;
  transition: background .16s, color .16s;
}
.nav-item:hover { background: rgba(255, 255, 255, .08); color: #fff; }
.nav-item.active { background: linear-gradient(90deg, rgba(59,130,246,.95), rgba(99,102,241,.85)); color: #fff; font-weight: 600; }
.nav-item .ico { width: 20px; text-align: center; }
.nav-item .badge {
  margin-left: auto; background: var(--red); color: #fff;
  border-radius: 9px; padding: 1px 7px; font-size: 11px; font-weight: 700;
}
.nav-item .dot {
  margin-left: auto; width: 8px; height: 8px; border-radius: 50%;
  background: #22c55e; box-shadow: 0 0 0 3px rgba(34,197,94,.25);
}

.sidebar-foot { padding: 12px; border-top: 1px solid rgba(255,255,255,.09); }
.who { display: flex; gap: 9px; align-items: center; margin-bottom: 9px; }
.avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(255,255,255,.14); display: grid; place-items: center;
  font-weight: 700; font-size: 14px;
}
.who-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.who-text strong { font-size: 13.5px; }
.who-text span { font-size: 11.5px; color: #9fb0cd; }
.foot-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.server-time { font-size: 11px; color: #8296b5; margin-top: 8px; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px; background: #fff; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.title-wrap { flex: 1; min-width: 0; }
.title-wrap h1 { margin: 0; font-size: 18px; }
.title-wrap p { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }
.topbar-right { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

.page { padding: 18px 20px 60px; max-width: 1400px; width: 100%; }

/* ---------------- 通用组件 ---------------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px; margin-bottom: 16px;
}
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.card-head h2, .card-head h3 { margin: 0; font-size: 15.5px; }
.card-head .sub { font-size: 12.5px; color: var(--muted); }
.card-head .spacer { flex: 1; }

.grid { display: grid; gap: 14px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid.side { grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); }

.kpi { display: flex; flex-direction: column; gap: 4px; }
.kpi .label { font-size: 12.5px; color: var(--muted); }
.kpi .value { font-size: 26px; font-weight: 700; letter-spacing: -.5px; }
.kpi .value small { font-size: 13px; font-weight: 500; color: var(--muted); }
.kpi .hint { font-size: 12px; color: var(--muted); }
.kpi.blue .value { color: var(--blue); }
.kpi.green .value { color: var(--green); }
.kpi.red .value { color: var(--red); }
.kpi.amber .value { color: var(--amber); }

.btn {
  border: 1px solid var(--line); background: #fff; color: var(--text);
  padding: 8px 14px; border-radius: 9px; cursor: pointer;
  font-size: 13.5px; font-family: inherit; transition: .15s;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn:hover { border-color: #c6d0e0; background: #f9fbff; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--blue-dark); }
.btn.green { background: var(--green); border-color: var(--green); color: #fff; }
.btn.danger { background: #fff; border-color: #f3c0bd; color: var(--red); }
.btn.danger:hover { background: var(--red-soft); }
.btn.ghost { background: transparent; border-color: rgba(255,255,255,.25); color: #dbe6f7; }
.btn.ghost:hover { background: rgba(255,255,255,.12); }
.btn.tiny { padding: 5px 10px; font-size: 12.5px; border-radius: 8px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.icon-btn {
  border: 1px solid var(--line); background: #fff; border-radius: 9px;
  width: 36px; height: 36px; font-size: 17px; cursor: pointer;
}

input, select, textarea {
  font-family: inherit; font-size: 13.5px; color: var(--text);
  border: 1px solid var(--line); border-radius: 9px; padding: 8px 10px;
  background: #fff; width: 100%; outline: none; transition: .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(31,111,235,.12); }
textarea { resize: vertical; min-height: 62px; line-height: 1.5; }
label.field { display: block; margin-bottom: 11px; }
label.field > span { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 5px; }
label.field > span b { color: var(--red); }
.hint-text { font-size: 12px; color: var(--muted); margin-top: 4px; line-height: 1.55; }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 999px; font-size: 12.5px;
  background: #eef2fb; color: #3b4c66;
}
.chip.ok { background: var(--green-soft); color: #157f43; }
.chip.warn { background: var(--amber-soft); color: #a25c05; }
.chip.bad { background: var(--red-soft); color: #b3261e; }
.chip.gray { background: #f0f2f6; color: #64708a; }

.table-wrap { overflow-x: auto; border-radius: 10px; border: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; background: #fff; }
th, td { padding: 9px 11px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { background: #f7f9fd; font-size: 12.5px; color: #4b5668; font-weight: 600; position: sticky; top: 0; }
tbody tr:hover { background: #fafcff; }
tbody tr:last-child td { border-bottom: none; }
td.wrap, th.wrap { white-space: normal; min-width: 160px; }
td.num, th.num { text-align: right; }
.empty { text-align: center; color: var(--muted); padding: 26px 10px; font-size: 13.5px; }

.bar { height: 8px; background: #edf1f8; border-radius: 99px; overflow: hidden; min-width: 70px; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, #4f9cf9, #1f6feb); }
.bar.warn > i { background: linear-gradient(90deg, #fbbf24, #d97706); }
.bar.bad > i { background: linear-gradient(90deg, #f87171, #dc2626); }

.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.tab {
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-size: 13px;
}
.tab.active { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }

.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input, .toolbar select { width: auto; min-width: 120px; }

.member-row {
  display: grid; grid-template-columns: 1fr auto; gap: 10px;
  align-items: center; padding: 10px; border: 1px solid var(--line);
  border-radius: 11px; margin-bottom: 8px; background: #fff;
}
.member-row.absent { border-color: #f6c9c5; background: #fff8f7; }
.member-main { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.member-main strong { font-size: 14.5px; }
.member-main span { font-size: 12px; color: var(--muted); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.seg button {
  border: none; background: #fff; padding: 7px 13px; cursor: pointer;
  font-size: 13px; color: var(--muted); font-family: inherit;
}
.seg button.on { background: var(--green); color: #fff; font-weight: 600; }
.seg button.off.on { background: var(--red); }
.reason-line { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.reason-line select { width: auto; min-width: 110px; }

.toast-wrap { position: fixed; right: 16px; bottom: 16px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: #1f2937; color: #fff; padding: 10px 14px; border-radius: 10px;
  font-size: 13.5px; box-shadow: 0 8px 24px rgba(0,0,0,.22); max-width: 340px;
  animation: toastIn .18s ease-out;
}
.toast.ok { background: #15803d; }
.toast.err { background: #b91c1c; }
@keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.modal-mask {
  position: fixed; inset: 0; background: rgba(16, 24, 40, .48);
  display: grid; place-items: center; z-index: 900; padding: 16px;
}
.modal {
  background: #fff; border-radius: 16px; padding: 18px; width: 100%;
  max-width: 620px; max-height: 88vh; overflow-y: auto; box-shadow: 0 18px 50px rgba(0,0,0,.28);
}
.modal h3 { margin: 0 0 12px; font-size: 16px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

.logbox {
  font-family: Consolas, "Courier New", monospace; font-size: 12.5px;
  background: #0f172a; color: #cbd5e1; border-radius: 10px; padding: 12px;
  white-space: pre-wrap; word-break: break-word; max-height: 260px; overflow: auto; line-height: 1.6;
}

.dot-status { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #cbd5e1; }
.dot-status.online { background: #22c55e; box-shadow: 0 0 0 3px rgba(34,197,94,.2); }

canvas { max-width: 100%; }
.chart-box { position: relative; height: 280px; }
.chart-box.short { height: 220px; }

.only-mobile { display: none; }
.sidebar-mask { display: none; }

.notice {
  background: #eef4ff; border: 1px solid #dbe7ff; color: #1b3a6b;
  border-radius: 10px; padding: 9px 12px; font-size: 13px; margin-bottom: 12px;
}

/* 登录页 */
.login-wrap { display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; }
.login-card {
  width: 100%; max-width: 420px; background: var(--card);
  border: 1px solid var(--line); border-radius: 16px; padding: 26px 24px 20px;
  box-shadow: 0 10px 30px rgba(15, 32, 66, .08);
}
.login-head { text-align: center; margin-bottom: 18px; }
.login-head .logo { font-size: 34px; }
.login-head h2 { margin: 8px 0 4px; font-size: 20px; }
.login-head p { color: var(--muted); font-size: 13px; margin: 0; }
.login-remember { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); margin: 4px 0 12px; }
.login-error {
  background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c;
  border-radius: 8px; padding: 8px 10px; font-size: 13px; margin-bottom: 10px;
}
.login-card .btn.block { width: 100%; }
.login-foot { margin-top: 14px; text-align: center; font-size: 12.5px; color: var(--muted); }

/* 进度条 */
.progress { height: 6px; background: #eef2f8; border-radius: 999px; overflow: hidden; margin: 8px 0 6px; }
.progress-bar { height: 100%; background: var(--blue); border-radius: 999px; }

/* 统计卡片 */
.stat-card { display: flex; flex-direction: column; gap: 4px; }
.stat-value { font-size: 26px; font-weight: 700; color: var(--ink); line-height: 1.2; }
.stat-unit { font-size: 13px; font-weight: 500; color: var(--muted); margin-left: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }

/* ---------------- 入口页：选寝室 ---------------- */
.hero {
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  background: linear-gradient(120deg, #eef4ff 0%, #f7fbff 60%, #eefaf5 100%);
  border-color: #dbe7ff;
}
.hero-main { flex: 1 1 320px; }
.hero-main h2 { margin: 0 0 6px; font-size: 22px; }
.hero-side { flex: 1 1 320px; display: flex; flex-direction: column; gap: 10px; }
.hero-btns { display: flex; gap: 8px; flex-wrap: wrap; }

.room-grid {
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fill, minmax(158px, 1fr));
}
.room-card {
  display: flex; flex-direction: column; gap: 3px; align-items: flex-start;
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px;
  background: #fff; cursor: pointer; text-align: left; font-family: inherit;
  transition: .15s;
}
.room-card:hover { border-color: var(--blue); box-shadow: 0 4px 14px rgba(31,111,235,.14); transform: translateY(-1px); }
.room-card.active { border-color: var(--blue); background: #f2f7ff; box-shadow: 0 0 0 3px rgba(31,111,235,.14); }
.room-card .room-no { font-size: 19px; font-weight: 700; color: var(--blue); }
.room-card .lock-tag {
  font-size: 11.5px; font-weight: 600; color: #a25c05;
  background: var(--amber-soft); border-radius: 999px; padding: 1px 7px; margin-left: 4px;
  vertical-align: middle;
}
.room-card .room-meta { font-size: 12.5px; color: var(--text); }
.room-card .room-label { font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }

.code-box {
  display: flex; align-items: center; gap: 10px; margin: 6px 0 8px;
  background: #0f172a; color: #e2e8f0; border-radius: 10px; padding: 10px 14px;
}
.code-box b { font-size: 24px; letter-spacing: 4px; font-family: Consolas, monospace; }
.code-box .btn { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.2); color: #e2e8f0; }

/* ---------------- 登录页 ---------------- */
.login-page {
  min-height: 100vh; display: grid; place-items: center; padding: 20px;
  background: linear-gradient(135deg, #eef4ff 0%, #f7f9ff 55%, #eefaf3 100%);
}
.login-card { width: 100%; max-width: 400px; background: #fff; border-radius: 18px; padding: 26px; box-shadow: 0 16px 44px rgba(23,43,77,.12); }
.login-card h1 { margin: 0 0 6px; font-size: 21px; }
.login-card p.sub { margin: 0 0 18px; color: var(--muted); font-size: 13px; }
.login-logo { font-size: 34px; margin-bottom: 6px; }

@media (max-width: 1100px) {
  .grid.cols-4, .grid.cols-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid.side { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .only-mobile { display: inline-flex; }
  .sidebar {
    position: fixed; left: 0; top: 0; z-index: 60;
    transform: translateX(-104%); transition: transform .22s ease;
    box-shadow: 6px 0 28px rgba(0,0,0,.24);
  }
  .sidebar.open { transform: none; }
  .sidebar-mask.show { display: block; position: fixed; inset: 0; background: rgba(15,23,42,.45); z-index: 55; }
  .page { padding: 14px 12px 60px; }
  .topbar { padding: 12px; }
  .title-wrap h1 { font-size: 16px; }
  .title-wrap p { display: none; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4, .grid.cols-5 { grid-template-columns: 1fr; }
  .card { padding: 13px; }
  .kpi .value { font-size: 22px; }
}