/* ============================================================
   学校学生查询系统 - 公共样式
   响应式：移动端优先，适配PC
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --text: #1f2937;
  --text-light: #6b7280;
  --border: #e5e7eb;
  --bg: #f3f4f6;
  --card: #ffffff;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 40px rgba(15, 23, 42, 0.12);
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  font-size: 15px;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; display: block; }

/* ---------- 布局 ---------- */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}

.page { min-height: 100vh; display: flex; flex-direction: column; }

.header {
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 100%);
  color: #fff;
  padding: 24px 0;
  box-shadow: var(--shadow);
}

.header .container {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}

.brand {
  display: flex; align-items: center; gap: 12px;
  font-size: 20px; font-weight: 700; letter-spacing: 1px;
}
.brand-logo {
  width: 42px; height: 42px; border-radius: 10px;
  background: rgba(255, 255, 255, 0.18);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
}

.header-nav a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.12);
  color: #fff; font-size: 14px;
  transition: all .2s;
}
.header-nav a:hover { background: rgba(255,255,255,0.25); }

.footer {
  padding: 24px 0; text-align: center; color: var(--text-light);
  font-size: 13px; border-top: 1px solid var(--border);
  background: #fff;
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}
.card + .card { margin-top: 20px; }

.card-title {
  font-size: 18px; font-weight: 600; margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.card-title::before {
  content: ''; width: 4px; height: 18px; background: var(--primary);
  border-radius: 2px;
}

/* ---------- 表单 ---------- */
.form-item { margin-bottom: 18px; }
.form-label {
  display: block; margin-bottom: 6px; font-weight: 500;
  color: #374151; font-size: 14px;
}
.form-label .required { color: var(--danger); margin-right: 2px; }

.input, .select, textarea.input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  background: #fff;
  color: var(--text);
  transition: all .18s;
  font-family: inherit;
  outline: none;
}
.input:focus, .select:focus, textarea.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.input::placeholder { color: #9ca3af; }

textarea.input { min-height: 80px; resize: vertical; }

.form-row {
  display: grid; grid-template-columns: 1fr; gap: 16px;
}
@media (min-width: 640px) {
  .form-row.cols-2 { grid-template-columns: repeat(2, 1fr); }
  .form-row.cols-3 { grid-template-columns: repeat(3, 1fr); }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .18s;
  background: #fff;
  color: var(--text);
  white-space: nowrap;
  user-select: none;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }
.btn-primary:disabled { background: #93c5fd; border-color: #93c5fd; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-success:hover { background: #15803d; color: #fff; }
.btn-warning { background: var(--warning); color: #fff; border-color: var(--warning); }
.btn-warning:hover { background: #b45309; color: #fff; }
.btn-danger  { background: var(--danger);  color: #fff; border-color: var(--danger); }
.btn-danger:hover  { background: #b91c1c; color: #fff; }

.btn-outline-primary { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }
.btn-outline-gray    { background: #fff; color: #374151; border-color: var(--border); }
.btn-outline-gray:hover { background: var(--bg); }

.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-block { width: 100%; }

.btn-group { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- 提示 / 状态 ---------- */
.alert {
  padding: 14px 16px; border-radius: var(--radius-sm);
  border: 1px solid transparent;
  margin-bottom: 16px;
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px;
}
.alert-info    { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }
.alert-success { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.alert-warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.alert-danger  { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.alert-error   { background: #fef2f2; border-color: #fecaca; color: #991b1b; }

.alert.hide { display: none; }

.tag {
  display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 12px; line-height: 1.6;
  background: var(--primary-light); color: var(--primary-dark);
}
.tag-green  { background: #dcfce7; color: #166534; }
.tag-orange { background: #ffedd5; color: #9a3412; }
.tag-gray   { background: #f3f4f6; color: #4b5563; }

/* ---------- 学生查询页专属 ---------- */
.query-hero {
  position: relative;
  padding: 56px 0 40px;
  background:
    radial-gradient(1200px 300px at 10% -10%, rgba(37,99,235,0.25), transparent 60%),
    radial-gradient(900px 300px at 90% 10%, rgba(34,197,94,0.18), transparent 60%),
    linear-gradient(180deg, #eff6ff 0%, #f3f4f6 100%);
}

.query-card {
  max-width: 520px; margin: 0 auto;
  padding: 32px;
  border-radius: 20px;
  background: #fff;
  box-shadow: var(--shadow-lg);
}
.query-card h2 {
  font-size: 22px; font-weight: 700;
  text-align: center; margin-bottom: 6px;
}
.query-card .sub {
  text-align: center; color: var(--text-light);
  font-size: 14px; margin-bottom: 28px;
}

.result-card {
  max-width: 680px; margin: 30px auto 0;
  display: none;
}
.result-card.show { display: block; animation: fadeIn .35s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.info-grid {
  display: grid; grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 640px) {
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}

.info-item {
  background: #f9fafb;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  border: 1px solid var(--border);
}
.info-item .label {
  font-size: 13px; color: var(--text-light);
  margin-bottom: 4px;
}
.info-item .value {
  font-size: 16px; font-weight: 600; color: var(--text);
  word-break: break-all;
}
.info-item.full { grid-column: 1 / -1; }

.phone-call {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: #ecfdf5; color: #047857;
  font-size: 14px; font-weight: 500;
}
.phone-call:hover { background: #d1fae5; }

/* ---------- 加载动画 ---------- */
.loading {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
.loading.dark {
  border-color: rgba(37,99,235,0.2);
  border-top-color: var(--primary);
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn .loading { width: 14px; height: 14px; border-width: 2px; }

/* ---------- 表格 ---------- */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
table.data-table {
  width: 100%; min-width: 760px;
  border-collapse: collapse;
  background: #fff;
  font-size: 14px;
}
table.data-table th, table.data-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.data-table th {
  background: #f9fafb;
  font-weight: 600;
  color: #374151;
  white-space: nowrap;
}
table.data-table tbody tr:hover { background: #f9fafb; }
table.data-table tbody tr:last-child td { border-bottom: none; }
table.data-table .empty {
  text-align: center; padding: 60px 20px;
  color: var(--text-light);
}

.checkbox { width: 18px; height: 18px; cursor: pointer; }

/* ---------- 分页 ---------- */
.pagination {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  margin-top: 16px; font-size: 14px;
}
.pagination .info { color: var(--text-light); }
.pagination .pages { display: flex; gap: 6px; flex-wrap: wrap; }
.page-btn {
  min-width: 34px; height: 34px; padding: 0 10px;
  border: 1px solid var(--border); border-radius: 6px;
  background: #fff; cursor: pointer; color: var(--text);
  display: inline-flex; align-items: center; justify-content: center;
  transition: all .15s;
}
.page-btn:hover:not(:disabled) { border-color: var(--primary); color: var(--primary); }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-btn:disabled { color: #9ca3af; cursor: not-allowed; background: #f9fafb; }

/* ---------- 弹窗（Modal） ---------- */
.modal-mask {
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: none;
  align-items: center; justify-content: center;
  z-index: 1000;
  padding: 16px;
}
.modal-mask.show { display: flex; animation: fade .2s ease; }

.modal {
  background: #fff;
  border-radius: var(--radius);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp .25s ease;
}
.modal.lg { max-width: 760px; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 17px; font-weight: 600; }
.modal-close {
  width: 30px; height: 30px; border: none; background: transparent;
  cursor: pointer; border-radius: 6px; color: var(--text-light);
  font-size: 20px; line-height: 1;
  display: flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--bg); color: var(--text); }

.modal-body { padding: 22px; }
.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
  flex-wrap: wrap;
  background: #f9fafb;
  border-bottom-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
}

/* ---------- 后台布局 ---------- */
.admin-layout {
  min-height: 100vh;
  display: flex; flex-direction: column;
}

.admin-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
  position: sticky; top: 0; z-index: 50;
}
.admin-header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px; gap: 12px;
}
.admin-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; font-size: 17px; color: var(--primary-dark);
}
.admin-brand .logo {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, #1e40af, #2563eb);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}

.admin-user {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; color: #374151;
}
.admin-user .avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
}

.admin-main {
  padding: 24px 0;
  flex: 1;
}

.toolbar {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: space-between; align-items: center;
  margin-bottom: 16px;
}
.toolbar .filters {
  display: flex; flex-wrap: wrap; gap: 10px;
  flex: 1; min-width: 240px;
}
.toolbar .filters .input,
.toolbar .filters .select {
  max-width: 240px; flex: 1 1 160px;
}
.toolbar .actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- 登录页 ---------- */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background:
    radial-gradient(800px 300px at 10% 10%, rgba(37,99,235,0.25), transparent 60%),
    radial-gradient(800px 300px at 90% 90%, rgba(16,185,129,0.2), transparent 60%),
    linear-gradient(135deg, #eff6ff 0%, #ecfeff 100%);
}
.login-card {
  width: 100%; max-width: 420px;
  background: #fff;
  border-radius: 20px;
  padding: 36px 32px;
  box-shadow: var(--shadow-lg);
}
.login-card .logo {
  width: 56px; height: 56px; border-radius: 16px;
  background: linear-gradient(135deg, #1e40af, #2563eb);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; margin: 0 auto 18px;
}
.login-card h1 {
  text-align: center; font-size: 22px; margin-bottom: 4px;
}
.login-card .sub {
  text-align: center; color: var(--text-light);
  font-size: 14px; margin-bottom: 26px;
}

.back-link {
  text-align: center; font-size: 13px;
  margin-top: 16px; color: var(--text-light);
}

/* ---------- 文件上传 ---------- */
.file-drop {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius-sm);
  padding: 28px 20px;
  text-align: center;
  background: #f8fafc;
  cursor: pointer;
  transition: all .2s;
}
.file-drop:hover, .file-drop.drag {
  border-color: var(--primary);
  background: #eff6ff;
}
.file-drop .icon { font-size: 36px; color: var(--primary); margin-bottom: 10px; }
.file-drop .tip { color: var(--text-light); font-size: 13px; margin-top: 6px; }
.file-drop input[type=file] { display: none; }

.file-info {
  display: none;
  margin-top: 10px;
  padding: 10px 14px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  color: #166534; font-size: 13px;
}
.file-info.show { display: block; }

.import-result {
  margin-top: 14px;
  display: none;
}
.import-result.show { display: block; }
.import-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 10px; margin-bottom: 12px;
}
@media (max-width: 520px) {
  .import-stats { grid-template-columns: repeat(2, 1fr); }
}
.import-stat {
  padding: 12px;
  border-radius: var(--radius-sm);
  background: #f8fafc;
  border: 1px solid var(--border);
  text-align: center;
}
.import-stat .num { font-size: 20px; font-weight: 700; color: var(--primary-dark); }
.import-stat .lbl { font-size: 12px; color: var(--text-light); margin-top: 2px; }

.error-list {
  margin-top: 8px;
  padding: 10px 12px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--radius-sm);
  max-height: 180px;
  overflow-y: auto;
  font-size: 13px; color: #991b1b;
}
.error-list ol { padding-left: 20px; }
.error-list li { margin: 2px 0; }

/* ---------- 响应式小屏优化 ---------- */
@media (max-width: 480px) {
  .card { padding: 18px; }
  .query-card { padding: 24px 18px; }
  .header { padding: 18px 0; }
  .brand { font-size: 17px; }
  .brand-logo { width: 36px; height: 36px; font-size: 18px; }
  .btn { padding: 10px 14px; font-size: 14px; }
  .admin-main { padding: 16px 0; }
  .toolbar .filters .input, .toolbar .filters .select { max-width: 100%; }
}