/* ─── 统双班务网页 ─── 全局样式 ─── */
:root {
  --primary: #4f6ef7;
  --primary-hover: #3b5ddb;
  --bg: #f0f2f5;
  --card-bg: #ffffff;
  --text: #1d2129;
  --text-secondary: #86909c;
  --border: #e5e6eb;
  --success: #00b42a;
  --danger: #f53f3f;
  --warning: #faad14;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(0,0,0,.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* ─── 登录/注册页 ─── */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.auth-container::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(255,255,255,.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(255,255,255,.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(255,255,255,.06) 0%, transparent 50%);
  pointer-events: none;
}
.auth-card {
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,.15);
  padding: 44px 40px 28px;
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 1;
  animation: authCardIn .4s ease-out;
}
@keyframes authCardIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.auth-card h1 {
  font-size: 26px;
  text-align: center;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--primary), #764ba2);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.auth-card .subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 32px;
}
.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
}
.form-group input, .form-group select {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  outline: none;
  transition: all .2s;
  background: #f8f9fb;
}
.form-group input:focus, .form-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.15);
  background: #fff;
}
.btn {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #6c5ce7);
  color: #fff;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), #5a4bd1);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(79,110,247,.35);
}
.btn-primary:disabled {
  opacity: .6;
  cursor: not-allowed;
}
.auth-link {
  text-align: center;
  margin-top: 18px;
  font-size: 14px;
  color: var(--text-secondary);
}
.auth-link a {
  color: var(--primary);
  text-decoration: none;
  cursor: pointer;
}
.auth-link a:hover { text-decoration: underline; }
.error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 4px;
}
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}
.alert-error {
  background: #ffece8;
  color: #f53f3f;
  border: 1px solid #fbb4a8;
}
.alert-success {
  background: #e8ffea;
  color: #00b42a;
  border: 1px solid #a8f0b0;
}

/* ─── 主布局 ─── */
.app-header {
  background: var(--card-bg);
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.app-header .logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--primary);
}
.app-header .user-info {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
}
.app-header .user-info .role-tag {
  background: #e8f0fe;
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
}
.app-header .logout-btn {
  background: none;
  border: 1px solid var(--border);
  padding: 6px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
}
.app-header .logout-btn:hover {
  color: var(--danger);
  border-color: var(--danger);
}
.main-content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px;
}

/* ─── 仪表盘卡片 ─── */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.dash-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
}
.dash-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
}
.dash-card .icon {
  font-size: 36px;
  margin-bottom: 8px;
}
.dash-card .title {
  font-size: 14px;
  color: var(--text-secondary);
}
.dash-card .count {
  font-size: 28px;
  font-weight: 700;
  margin-top: 4px;
}
.dash-card .dash-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ─── 个人中心 ─── */
.profile-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
  max-width: 500px;
  margin: 0 auto;
}
.profile-card h2 {
  font-size: 20px;
  margin-bottom: 20px;
}
.profile-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.profile-row:last-child { border: none; }
.profile-row .label { color: var(--text-secondary); }
.profile-row .value { font-weight: 500; }

/* 个人中心编辑模式 */
.profile-edit-card .form-group {
  margin-bottom: 14px;
}
.profile-edit-card .form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.profile-edit-card .form-group input,
.profile-edit-card .form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: var(--input-bg, #fff);
  color: var(--text);
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.profile-edit-card .form-group input:focus,
.profile-edit-card .form-group select:focus {
  outline: none;
  border-color: var(--primary);
}
.profile-edit-card .alert {
  margin-top: 8px;
}

/* ─── 密码可见性切换 ─── */
.pw-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}
.pw-wrapper input {
  padding-right: 40px;
}
.pw-toggle {
  position: absolute;
  right: 12px;
  cursor: pointer;
  font-size: 16px;
  user-select: none;
  line-height: 1;
  color: var(--text-secondary);
}
.pw-toggle:hover {
  color: var(--text);
}

/* ─── 用户管理 ─── */
.user-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--card-bg);
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
  flex-wrap: wrap;
}
.user-row-main {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
  flex-wrap: wrap;
}
.user-row-main > span:first-child { min-width: 80px; }
.user-row-main > span:nth-child(2) { min-width: 60px; }
.user-row-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.create-user-card {
  background: var(--card-bg);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
  width: auto;
}
.btn-cancel {
  background: #f5f5f5;
  color: var(--text-secondary);
  width: auto;
}
.btn-cancel:hover { background: #e5e5e5; }

/* ─── 模态弹窗 ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn .2s;
}
.modal-card {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
  width: 90%;
  max-width: 440px;
  max-height: 85vh;
  overflow-y: auto;
  animation: slideUp .25s;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 0;
}
.modal-header h3 {
  margin: 0;
  font-size: 18px;
}
.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  line-height: 1;
}
.modal-close:hover { color: var(--text-primary); }
.modal-body {
  padding: 12px 20px;
}
.detail-row {
  display: flex;
  padding: 6px 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 14px;
}
.detail-row:last-of-type { border-bottom: none; }
.detail-row .label {
  color: var(--text-secondary);
  min-width: 100px;
  flex-shrink: 0;
}
.detail-row .value {
  color: var(--text-primary);
  flex: 1;
}
.modal-footer {
  padding: 0 20px 20px;
  display: flex;
  gap: 8px;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { transform: translateY(30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* ─── Toast 提示 ─── */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 1100;
  animation: fadeIn .25s;
  white-space: nowrap;
}

/* ─── 底部导航 ─── */
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-around;
  padding: 6px 0;
  z-index: 100;
}
.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 11px;
  color: var(--text-secondary);
  transition: color .15s;
}
.nav-item.active { color: var(--primary); }
.nav-item:hover { background: #f5f5f5; }
.nav-icon { font-size: 20px; }
.nav-label { margin-top: 2px; }

.main-content { padding-bottom: 72px; }

.loading { text-align: center; color: var(--text-secondary); padding: 32px; }

.welcome-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  text-align: center;
}

/* ─── 班务收集 ─── */
.task-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: transform .1s;
}
.task-card:hover { transform: translateX(2px); }
.status-tag {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 500;
}
.status-tag.active { background: #e8ffea; color: #00b42a; }
.status-tag.closed { background: #f5f5f5; color: #86909c; }
.status-tag.submitted { background: #e8f0fe; color: #4f6ef7; }
.status-tag.pending { background: #fff7e6; color: #fa8c16; }

.form-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}
.form-card textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  font-family: inherit;
  resize: vertical;
}
.form-card textarea:focus { border-color: var(--primary); }
.form-card select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  background: #fff;
}

.field-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.field-row input, .field-row select {
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
}
.field-row input:focus, .field-row select:focus { border-color: var(--primary); }

.btn-icon {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
  font-size: 16px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-icon:hover { background: #ffece8; }

/* ─── 物资管理 ─── */
.item-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 10px;
}
.item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.btn-xs {
  padding: 4px 12px;
  font-size: 12px;
  width: auto;
  border-radius: 6px;
}
.btn-success {
  background: #00b42a;
  color: #fff;
  width: auto;
}
.btn-success:hover { background: #009a24; }

.tab-link {
  cursor: pointer;
  color: var(--primary);
  font-size: 14px;
  padding-bottom: 2px;
}
.tab-link:hover { text-decoration: underline; }
.tab-link.active {
  font-weight: 600;
  border-bottom: 2px solid var(--primary);
}

/* ─── 课程情报 ─── */
.course-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: transform .1s;
}
.course-card:hover { transform: translateX(2px); }

.intel-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 8px;
}
.intel-card.archived { opacity: .7; }
.intel-header {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.intel-type {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 500;
  white-space: nowrap;
}
.intel-type.homework { background: #fff7e6; color: #fa8c16; }
.intel-type.notice { background: #e8f0fe; color: #4f6ef7; }
.intel-type.material { background: #e8ffea; color: #00b42a; }
.intel-content {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text);
  white-space: pre-wrap;
}
.intel-deadline {
  margin-top: 6px;
  font-size: 12px;
  color: var(--warning);
}

/* ─── 文档库 ─── */
.folder-tree {
  width: 220px;
  min-width: 180px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  max-height: 72vh;
  overflow-y: auto;
  flex-shrink: 0;
}
.folder-tree-header {
  padding: 10px 12px;
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  background: #f8f9fb;
  position: sticky;
  top: 0;
  z-index: 1;
}
/* 目录树项目 */
.ft-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background .12s;
  border-left: 3px solid transparent;
}
.ft-item:hover { background: #f0f2f5; }
.ft-item.ft-active {
  background: #eef1ff;
  border-left-color: var(--primary);
  font-weight: 600;
  color: var(--primary);
}
.ft-icon { font-size: 15px; flex-shrink: 0; }
.ft-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.ft-count {
  font-size: 11px;
  color: var(--text-secondary);
  background: var(--bg);
  padding: 1px 6px;
  border-radius: 10px;
  flex-shrink: 0;
}
.ft-empty {
  padding: 16px 12px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}
/* 文档行 */
.doc-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card-bg);
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 8px;
  box-shadow: 0 1px 4px rgba(0,0,0,.04);
  transition: box-shadow .15s;
}
.doc-row:hover { box-shadow: 0 2px 8px rgba(0,0,0,.1); }
.doc-icon { font-size: 22px; flex-shrink: 0; }
.doc-info { flex: 1; min-width: 0; }
.doc-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  flex-wrap: wrap;
}
.doc-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.doc-meta {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 4px;
}
.doc-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.doc-pwd {
  font-size: 12px;
  color: var(--warning);
  background: #fff7e6;
  padding: 2px 8px;
  border-radius: 4px;
}
.doc-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  font-size: 14px;
}
.doc-type-tag {
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 10px;
  font-weight: 500;
}
.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 10px;
}
.approve-form {
  margin-top: 12px;
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
}
.tab-btn {
  padding: 6px 16px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 14px;
  border-radius: 6px;
  color: var(--text-secondary);
  transition: all .15s;
}
.tab-btn.active {
  background: var(--primary);
  color: #fff;
}

@media (max-width: 700px) {
  .folder-tree { width: 140px; min-width: 140px; }
}

/* ─── 响应式 ─── */
/* ─── 备案号 ─── */
.app-footer {
  text-align: center;
  padding: 12px 0 16px;
  font-size: 12px;
  color: var(--text-secondary);
}
.login-footer {
  text-align: center;
  padding: 16px 0 0;
  font-size: 12px;
  color: var(--text-secondary);
}
.app-footer a, .login-footer a {
  color: inherit;
  text-decoration: none;
}
.app-footer a:hover { color: var(--text); text-decoration: underline; }
.login-footer a:hover { color: var(--text); text-decoration: underline; }

@media (max-width: 600px) {
  .auth-card { padding: 28px 20px; }
  .app-header { padding: 0 12px; }
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
}