/* ============================================
   掌上枢阁 - 后台样式（黑白文档风，与前台统一）
   ============================================ */
:root {
  --ink: #0D0D0D;
  --paper: #FAFAFA;
  --paper-2: #F0F0EE;
  --paper-3: #E8E8E6;
  --line: #0D0D0D;
  --thin: 1px;
  --mid: 2px;
  --thick: 4px;
  --warn: #B33;
  --ok: #2A7;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'DengXian', 'DengXianBold', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  min-height: 100%;
}
body { padding: 0; }

/* ===== 顶部栏（与前台同款，但无"进入后台"按钮） ===== */
header.swa-nav {
  position: sticky; top: 0; z-index: 100;
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 1rem;
  padding: 0 2rem; height: 72px;
  background: var(--paper);
  border-bottom: var(--thick) solid var(--line);
  box-shadow: 0 3px 0 rgba(13,13,13,.08);
}
.nav-left { display: flex; align-items: center; gap: .8rem; }
.nav-left .swa-icon { height: 44px; width: auto; }
.nav-center { display: flex; justify-content: center; align-items: center; }
.nav-center .prime-icon { height: 40px; width: auto; }
.nav-right { display: flex; justify-content: flex-end; align-items: center; gap: 1rem; }

.nav-right a, .nav-right button {
  font-size: .9rem; font-weight: 700; letter-spacing: 2px;
  color: var(--ink); background: var(--paper);
  border: var(--mid) solid var(--ink); padding: .4rem 1rem;
  cursor: pointer; font-family: inherit; text-decoration: none;
  transition: all .2s ease; box-shadow: 3px 3px 0 var(--ink);
}
.nav-right a.active {
  background: var(--ink); color: var(--paper);
}
.nav-right a:hover, .nav-right button:hover {
  background: var(--ink); color: var(--paper);
  box-shadow: 5px 5px 0 rgba(13,13,13,.3);
  transform: translate(-1px,-1px);
}
.nav-right a:active, .nav-right button:active {
  box-shadow: 1px 1px 0 var(--ink); transform: translate(2px,2px);
}

/* ===== 内容区 ===== */
.admin-main {
  max-width: 1200px; margin: 0 auto; padding: 2rem;
}
.admin-title {
  font-size: 1.8rem; letter-spacing: 4px; margin-bottom: .5rem;
  padding-bottom: 1rem; border-bottom: var(--thick) solid var(--ink);
}
.admin-subtitle { font-size: .9rem; opacity: .6; margin-bottom: 2rem; }

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.admin-card {
  border: var(--mid) solid var(--ink); background: var(--paper);
  padding: 1.5rem; box-shadow: 4px 4px 0 var(--ink);
  cursor: pointer; text-decoration: none; color: var(--ink);
  transition: transform .2s ease, box-shadow .2s ease;
  display: block;
}
.admin-card:hover {
  transform: translate(-2px,-2px); box-shadow: 6px 6px 0 var(--ink);
}
.admin-card h3 { font-size: 1.1rem; letter-spacing: 2px; margin-bottom: .5rem; }
.admin-card p { font-size: .85rem; opacity: .7; line-height: 1.5; }
.admin-card .badge {
  display: inline-block; padding: .15rem .5rem; font-size: .7rem;
  border: var(--thin) solid var(--ink); margin-bottom: .8rem;
  letter-spacing: 1px;
}

/* ===== 列表/表格 ===== */
.list-row {
  display: grid; grid-template-columns: 60px 1fr auto;
  gap: 1rem; align-items: center;
  padding: 1rem; border-bottom: var(--thin) solid rgba(13,13,13,.2);
}
.list-row:hover { background: var(--paper-2); }
.list-row .row-num { font-weight: 700; opacity: .5; }
.list-row .row-title { font-weight: 700; }
.list-row .row-meta { font-size: .8rem; opacity: .6; margin-top: .2rem; }
.list-row .row-actions { display: flex; gap: .5rem; }

/* ===== 表单 ===== */
.form-group { margin-bottom: 1.2rem; }
.form-group label {
  display: block; font-size: .85rem; font-weight: 700;
  letter-spacing: 2px; margin-bottom: .4rem; opacity: .7;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: .7rem 1rem;
  border: var(--mid) solid var(--ink); background: var(--paper);
  font-size: .95rem; font-family: inherit; outline: none;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  box-shadow: 3px 3px 0 var(--ink);
}
.form-group textarea { min-height: 200px; resize: vertical; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .55rem 1.4rem; font-size: .95rem; font-weight: 700;
  letter-spacing: 2px; color: var(--ink); background: var(--paper);
  border: var(--mid) solid var(--ink); cursor: pointer;
  font-family: inherit; text-decoration: none;
  transition: all .2s ease; box-shadow: 3px 3px 0 var(--ink);
}
.btn:hover { background: var(--ink); color: var(--paper); transform: translate(-1px,-1px); box-shadow: 5px 5px 0 rgba(13,13,13,.3); }
.btn:active { box-shadow: 1px 1px 0 var(--ink); transform: translate(2px,2px); }
.btn-danger { color: var(--warn); border-color: var(--warn); box-shadow: 3px 3px 0 var(--warn); }
.btn-danger:hover { background: var(--warn); color: var(--paper); }
.btn-ok { color: var(--ok); border-color: var(--ok); box-shadow: 3px 3px 0 var(--ok); }
.btn-ok:hover { background: var(--ok); color: var(--paper); }

/* ===== 提示框 ===== */
.notice {
  padding: 1rem 1.5rem; border: var(--mid) solid var(--ink);
  margin-bottom: 1.5rem; font-size: .9rem;
}
.notice.ok { border-color: var(--ok); color: var(--ok); background: rgba(42,119,42,.05); }
.notice.warn { border-color: var(--warn); color: var(--warn); background: rgba(187,51,51,.05); }

/* ===== 模态框 ===== */
.modal-bg {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  display: none; align-items: center; justify-content: center; z-index: 200;
}
.modal-bg.show { display: flex; }
.modal {
  background: var(--paper); border: var(--thick) solid var(--ink);
  padding: 2rem; max-width: 500px; width: 90%;
  box-shadow: 8px 8px 0 var(--ink);
}
.modal h3 { font-size: 1.2rem; letter-spacing: 2px; margin-bottom: 1rem; }

/* ===== 响应式 ===== */
@media (max-width: 760px) {
  header.swa-nav { padding: 0 1rem; height: 60px; }
  .nav-left .swa-icon { height: 32px; }
  .nav-center .prime-icon { height: 28px; }
  .admin-main { padding: 1rem; }
  .list-row { grid-template-columns: 40px 1fr; }
  .list-row .row-actions { grid-column: 1/-1; }
}