/* ============================================================
   FIGS · 入营信息备案系统 —— 样式
   编辑式（editorial）风格，对齐主站 figs.css 的设计系统
   ============================================================ */

:root {
  --ink:    #0a0a0a;
  --ink-2:  #2a2a2a;
  --muted:  #6e6e6e;
  --soft:   #a8a8a8;
  --line:   #ececec;
  --bg:     #ffffff;
  --bg-soft:#fafafa;
  --bg-ink: #0a0a0a;
  --brand:  #003057;
  --accent: #f06a3f;
  --ok:     #1b7a3a;
  --warn:   #d97706;
  --err:    #c0392b;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI",
          "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "微软雅黑", "Heiti SC",
          Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--ink); text-decoration: none; transition: color .2s; }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; }

/* ===== 顶部 ===== */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: 1180px; margin: 0 auto;
  padding: 14px 28px;
  display: flex; align-items: center; gap: 20px;
}
.brand {
  display: inline-flex; align-items: center; gap: 12px;
  flex-shrink: 0;
}
.brand img { height: 42px; width: auto; }
.brand-text { font-weight: 700; font-size: 14px; color: var(--ink); letter-spacing: .04em; }
.topbar .doc-no {
  flex-grow: 1; text-align: right;
  font-size: 12px; letter-spacing: .15em;
  color: var(--muted); text-transform: uppercase; font-weight: 700;
}

/* ===== 容器 ===== */
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 28px;
}
.wide { max-width: 1180px; }

/* ===== Hero ===== */
.hero {
  padding: 56px 0 24px;
}
.label {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 18px;
}
.label::before { content: "["; font-weight: 400; font-size: 1.6em; line-height: 1; color: var(--ink); }
.label::after  { content: "]"; font-weight: 400; font-size: 1.6em; line-height: 1; color: var(--ink); }

h1 {
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  letter-spacing: -.025em;
  margin: 0 0 16px;
  line-height: 1.15;
  font-weight: 700;
}
h1 em { font-style: italic; color: var(--accent); }
.lede {
  font-size: clamp(1rem, 1.2vw, 1.1rem);
  color: var(--ink-2);
  margin: 0 0 8px;
  max-width: 720px;
}

/* ===== 关键信息卡 ===== */
.info-bar {
  margin: 32px 0 0;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
  padding: 20px 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.info-item strong {
  display: block;
  font-size: 10.5px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.info-item span {
  display: block;
  font-size: 15px; font-weight: 600;
  color: var(--ink);
  letter-spacing: -.005em;
}
.info-item .accent { color: var(--accent); }

/* ===== 通知条 ===== */
.alert {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--accent);
  background: #fff8f4;
  color: var(--ink-2);
  font-size: 14.5px;
  line-height: 1.65;
}
.alert.err { border-left-color: var(--err); background: #fdeceb; color: var(--err); }
.alert.ok  { border-left-color: var(--ok);  background: #ecf7f0; color: var(--ok); }
.alert strong { color: var(--ink); }
.alert.err strong { color: var(--err); }
.alert.ok strong { color: var(--ok); }

/* ===== 表单 ===== */
.form-section {
  margin: 36px 0 8px;
  padding-top: 28px;
  border-top: 1px solid var(--ink);
}
.form-section:first-of-type { border-top: 0; padding-top: 0; }
.form-section-title {
  font-size: 11.5px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink);
  margin: 0 0 18px;
}
.form-section-title::before { content: "["; color: var(--accent); margin-right: 6px; font-weight: 400; }
.form-section-title::after  { content: "]"; color: var(--accent); margin-left:  6px; font-weight: 400; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 24px;
  margin-bottom: 18px;
}
.form-row.cols-1 { grid-template-columns: 1fr; }
.form-row.cols-3 { grid-template-columns: 1fr 1fr 1fr; }

.field { display: flex; flex-direction: column; }
.field label {
  font-size: 11px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}
.field label .req { color: var(--accent); margin-left: 3px; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 0 9px;
  border: 0;
  border-bottom: 1.5px solid var(--ink);
  border-radius: 0;
  background: transparent;
  font-family: inherit;
  font-size: 16px;
  color: var(--ink);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  transition: border-color .2s;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--soft); }
.field input:focus,
.field select:focus,
.field textarea:focus { border-bottom-color: var(--accent); }
.field textarea { resize: vertical; min-height: 64px; line-height: 1.6; }
.field .hint {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .02em;
}

/* 单选按钮组（是/否） */
.choice {
  display: flex; gap: 0;
  margin-top: 4px;
}
.choice input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.choice label {
  flex: 1 1 0;
  padding: 11px 14px;
  border: 1.5px solid var(--ink);
  font-size: 14.5px; font-weight: 600;
  text-align: center;
  cursor: pointer;
  color: var(--ink-2);
  letter-spacing: 0; text-transform: none;
  margin-bottom: 0;
  background: #fff;
  transition: all .15s;
  user-select: none;
}
.choice label + label { border-left: 0; }
.choice input[type="radio"]:checked + label {
  background: var(--ink);
  color: #fff;
}
.choice input[type="radio"]:focus-visible + label {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* 条件显示块（如未满 18 才显示家长信息） */
.cond { display: none; }
.cond.show { display: block; animation: slideDown .25s ease; }
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

/* ===== 提交按钮 ===== */
.submit-row {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 2px solid var(--ink);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 16px 36px;
  background: var(--ink); color: #fff;
  border: 1.5px solid var(--ink); border-radius: 0;
  font-size: 15px; font-weight: 700;
  letter-spacing: .15em; text-transform: uppercase;
  transition: all .2s;
  cursor: pointer;
}
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.full { width: 100%; }
.btn.ghost {
  background: transparent; color: var(--ink);
}
.btn.ghost:hover { background: var(--ink); color: #fff; }
.btn.small { padding: 8px 14px; font-size: 12px; letter-spacing: .1em; }
.btn:disabled { opacity: .55; cursor: not-allowed; background: var(--ink); }
.submit-note {
  font-size: 12.5px; color: var(--muted);
  margin-top: 14px; letter-spacing: .02em;
}

/* ===== 页脚 ===== */
.footer {
  margin-top: 80px;
  padding: 40px 0 32px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  letter-spacing: .04em;
}

/* =============================================================
   管理员后台
   ============================================================= */

.admin-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-soft);
  font-size: 13.5px;
}
.admin-bar .container {
  display: flex; align-items: center; gap: 14px;
  max-width: 1180px;
}
.admin-bar .tag {
  font-size: 11px; font-weight: 700;
  letter-spacing: .22em; text-transform: uppercase;
  color: var(--ink);
}
.admin-bar .tag::before { content: "[ "; color: var(--accent); }
.admin-bar .tag::after  { content: " ]"; color: var(--accent); }
.admin-bar .who { color: var(--muted); }
.admin-bar .spacer { flex-grow: 1; }
.admin-bar a {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 4px 10px;
  border: 1px solid var(--ink);
}
.admin-bar a:hover { background: var(--ink); color: #fff; }

/* 登录卡 */
.login-card {
  max-width: 440px;
  margin: 80px auto;
  padding: 48px 40px;
  border: 1.5px solid var(--ink);
}
.login-card h2 {
  font-size: 1.5rem;
  margin: 0 0 8px;
  letter-spacing: -.02em;
}
.login-card p {
  font-size: 13.5px;
  color: var(--muted);
  margin: 0 0 28px;
}

/* 统计卡 */
.stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  margin: 32px 0 28px;
}
.stat {
  padding: 22px 18px;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }
.stat .num {
  font-size: clamp(1.6rem, 2.4vw, 2rem);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -.03em;
  line-height: 1;
  margin-bottom: 8px;
}
.stat.accent .num { color: var(--accent); }
.stat .lbl {
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
  line-height: 1.4;
}

/* 工具栏（搜索 + 筛选 + 导出） */
.toolbar {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin: 0 0 18px;
  align-items: center;
}
.search-box {
  flex-grow: 1; min-width: 220px;
  display: flex; align-items: center;
  border: 1.5px solid var(--ink);
  background: #fff;
}
.search-box svg { flex-shrink: 0; padding: 0 12px; }
.search-box input {
  flex-grow: 1;
  padding: 11px 12px 11px 0;
  border: 0; outline: none;
  font: inherit; font-size: 14.5px;
  background: transparent;
}
.filter-chip {
  display: inline-flex; align-items: center;
  padding: 9px 14px;
  border: 1.5px solid var(--ink);
  font-size: 13px; font-weight: 600;
  letter-spacing: .04em;
  cursor: pointer;
  user-select: none;
  background: #fff;
  transition: all .15s;
}
.filter-chip input { position: absolute; opacity: 0; pointer-events: none; }
.filter-chip:has(input:checked) { background: var(--ink); color: #fff; }
.filter-chip.legacy.on { background: var(--ink); color: #fff; }

/* 表格 */
.table-wrap {
  border: 1.5px solid var(--ink);
  overflow-x: auto;
  background: #fff;
}
table.subs {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
table.subs thead {
  background: var(--bg-soft);
}
table.subs th {
  padding: 12px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1.5px solid var(--ink);
  white-space: nowrap;
}
table.subs td {
  padding: 14px;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
table.subs tr.row-main:hover td { background: #fafaf7; }
table.subs tr:last-child td { border-bottom: 0; }
table.subs .name { font-weight: 700; }
table.subs .meta {
  font-size: 12px; color: var(--muted);
  margin-top: 3px; line-height: 1.4;
}
table.subs .tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 2px 8px;
  border: 1px solid var(--ink);
  margin-right: 4px;
}
table.subs .tag.stay { background: var(--ink); color: #fff; }
table.subs .tag.warn { background: var(--accent); color: #fff; border-color: var(--accent); }
table.subs .tag.under { background: var(--brand); color: #fff; border-color: var(--brand); }

table.subs .actions {
  text-align: right; white-space: nowrap;
}
table.subs .actions button {
  background: none; border: 0;
  font: inherit; font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink);
  padding: 4px 8px;
  cursor: pointer;
}
table.subs .actions button:hover { color: var(--accent); }
table.subs .actions .del { color: var(--err); }

table.subs .detail-row { display: none; }
table.subs .detail-row.show { display: table-row; }
table.subs .detail-row td {
  background: var(--bg-soft);
  padding: 22px 28px;
}
.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 36px;
}
.detail-grid .dt {
  font-size: 11px; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.detail-grid .dv {
  font-size: 14px;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
}
.detail-grid .dv .empty { color: var(--soft); }

.empty-state {
  text-align: center;
  padding: 64px 28px;
  border: 1.5px dashed var(--line);
  color: var(--muted);
}
.empty-state strong {
  display: block;
  color: var(--ink);
  font-size: 1.2rem;
  margin-bottom: 8px;
}

/* ===== 响应式 ===== */
@media (max-width: 820px) {
  .topbar-inner { padding: 12px 20px; gap: 12px; }
  .brand img { height: 36px; }
  .topbar .doc-no { display: none; }
  .container { padding: 0 22px; }
  .hero { padding: 36px 0 16px; }
  .info-bar { grid-template-columns: 1fr; gap: 14px; padding: 16px 0; }
  .form-row { grid-template-columns: 1fr; gap: 18px; margin-bottom: 14px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stat { border-bottom: 1px solid var(--line); }
  .stat:nth-child(2n) { border-right: 0; }
  table.subs th, table.subs td { padding: 10px 12px; font-size: 13px; }
  table.subs .meta { font-size: 11.5px; }
  .detail-grid { grid-template-columns: 1fr; gap: 10px 0; }
  .login-card { margin: 32px 22px; padding: 32px 24px; }
  .btn { padding: 14px 24px; }
}

@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr; }
  .stat { border-right: 0 !important; }
  .submit-row .btn { width: 100%; }
}

/* 打印 */
@media print {
  .topbar, .admin-bar, .toolbar, .actions, .submit-row { display: none; }
  body { background: #fff; color: #000; }
  .table-wrap { border: 1px solid #000; }
}