/* ════════════ components.css ════════════ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.stat-card {
  background: #fff; border-radius: var(--radius-lg);
  padding: 20px; box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 16px;
}
.stat-icon {
  width: 50px; height: 50px; border-radius: 12px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.stat-icon.blue   { background: #eff6ff; }
.stat-icon.green  { background: #f0fdf4; }
.stat-icon.orange { background: #fff7ed; }
.stat-icon.purple { background: #faf5ff; }
.stat-icon.cyan   { background: #ecfeff; }
.stat-icon.red    { background: #fef2f2; }
.stat-num   { font-size: 28px; font-weight: 800; line-height: 1; }
.stat-label { font-size: 12.5px; color: var(--gray-400); margin-top: 4px; }

.card {
  background: #fff; border-radius: var(--radius-lg);
  box-shadow: var(--shadow); overflow: hidden;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--gray-100);
}
.card-title { font-size: 15px; font-weight: 700; }
.card-body  { padding: 20px; }

.toolbar {
  display: flex; align-items: center; gap: 10px;
  flex-wrap: wrap; margin-bottom: 16px;
}
.search-wrap {
  display: flex; align-items: center;
  background: #fff; border: 1.5px solid var(--gray-200);
  border-radius: var(--radius); padding: 0 12px;
  flex: 1; min-width: 180px; max-width: 320px;
  transition: border-color .2s;
}
.search-wrap:focus-within { border-color: var(--primary); }
.search-wrap input {
  border: none; outline: none; background: transparent;
  padding: 8px 8px; font-size: 13.5px; flex: 1;
}
.search-icon { color: var(--gray-400); font-size: 14px; }
.filter-select {
  padding: 8px 12px;
  border: 1.5px solid var(--gray-200); border-radius: var(--radius);
  background: #fff; font-size: 13px; cursor: pointer; outline: none;
  transition: border-color .2s;
}
.filter-select:focus { border-color: var(--primary); }

.btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 8px 16px; border-radius: var(--radius);
  font-size: 13.5px; font-weight: 600; cursor: pointer;
  border: none; transition: all .15s; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: #16a34a; color: #fff; }
.btn-success:hover { background: #15803d; }
.btn-danger  { background: #fef2f2; color: var(--danger); }
.btn-danger:hover  { background: var(--danger); color: #fff; }
.btn-ghost {
  background: transparent; color: var(--gray-600);
  border: 1.5px solid var(--gray-200);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-warning { background: #fffbeb; color: #92400e; border: 1.5px solid #fde68a; }
.btn-warning:hover { background: var(--warning); color: #fff; border-color: var(--warning); }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }
.btn-icon { padding: 7px 10px; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th {
  background: var(--gray-50); text-align: left;
  padding: 10px 14px; font-size: 12.5px; font-weight: 700;
  color: var(--gray-600); border-bottom: 1.5px solid var(--gray-200);
  white-space: nowrap;
}
td {
  padding: 11px 14px; border-bottom: 1px solid var(--gray-100);
  font-size: 13.5px; vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--gray-50); }

.badge {
  display: inline-flex; align-items: center;
  padding: 2px 9px; border-radius: 20px;
  font-size: 12px; font-weight: 600;
}
.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: #dcfce7; color: #16a34a; }
.badge-danger  { background: #fef2f2; color: var(--danger); }
.badge-warning { background: #fffbeb; color: #92400e; }
.badge-info    { background: #ecfeff; color: #0e7490; }
.badge-gray    { background: var(--gray-100); color: var(--gray-600); }
.badge-male    { background: #eff6ff; color: #2563eb; }
.badge-female  { background: #fdf2f8; color: #db2777; }

.pagination {
  display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap;
  gap: 5px; padding: 14px 20px; border-top: 1px solid var(--gray-100);
}
.page-btn {
  min-width: 32px; height: 32px; padding: 0 8px;
  border: 1.5px solid var(--gray-200); border-radius: 6px;
  background: #fff; cursor: pointer; font-size: 13px; font-weight: 600;
  transition: all .15s; display: inline-flex; align-items: center; justify-content: center;
}
.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 { opacity: .4; cursor: not-allowed; }
.page-info { font-size: 13px; color: var(--gray-400); padding: 0 4px; }

.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; opacity: 0; pointer-events: none;
  transition: opacity .2s; backdrop-filter: blur(2px);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: #fff; border-radius: 16px;
  width: 560px; max-width: calc(100vw - 32px);
  max-height: calc(100vh - 48px); display: flex; flex-direction: column;
  box-shadow: 0 24px 80px rgba(0,0,0,.2);
  transform: scale(.95) translateY(10px);
  transition: transform .2s;
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal.modal-lg { width: 780px; }
.modal.modal-xl { width: 960px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 0; flex-shrink: 0;
}
.modal-title { font-size: 17px; font-weight: 700; }
.modal-close {
  background: var(--gray-100); border: none; border-radius: 50%;
  width: 30px; height: 30px; cursor: pointer; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.modal-close:hover { background: var(--gray-200); }
.modal-body {
  padding: 20px 24px; overflow-y: auto; flex: 1;
}
.modal-footer {
  padding: 0 24px 20px; display: flex;
  justify-content: flex-end; gap: 10px; flex-shrink: 0;
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.form-field { margin-bottom: 14px; }
.form-field label {
  display: block; font-weight: 600; font-size: 13px;
  color: var(--gray-700); margin-bottom: 5px;
}
.form-field .req { color: var(--danger); margin-left: 2px; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%; padding: 9px 12px;
  border: 1.5px solid var(--gray-200); border-radius: var(--radius);
  font-size: 13.5px; outline: none; transition: border-color .2s;
  background: var(--gray-50);
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { border-color: var(--primary); background: #fff; }
.form-field textarea { resize: vertical; min-height: 72px; }
.form-divider {
  font-size: 13px; font-weight: 700; color: var(--gray-500);
  margin: 16px 0 10px; padding-bottom: 6px;
  border-bottom: 1px solid var(--gray-100);
}

.loading-box {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; padding: 60px; color: var(--gray-400); font-size: 14px;
}
.spinner {
  width: 20px; height: 20px;
  border: 2.5px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.empty-box {
  text-align: center; padding: 60px 20px; color: var(--gray-400);
}
.empty-icon { font-size: 44px; margin-bottom: 12px; display: block; }
.empty-box p { font-size: 14px; }

#toast {
  position: fixed; bottom: 28px; right: 28px; z-index: 9999;
  padding: 12px 20px; border-radius: var(--radius);
  font-size: 13.5px; font-weight: 600; color: #fff;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  transform: translateY(80px); opacity: 0;
  transition: all .3s; pointer-events: none;
  display: flex; align-items: center; gap: 8px;
  max-width: 360px;
}
#toast.show { transform: translateY(0); opacity: 1; }
#toast.success { background: #16a34a; }
#toast.error   { background: #dc2626; }
#toast.info    { background: var(--primary); }
#toast.warning { background: #d97706; }

.score-A  { color: #16a34a; font-weight: 700; }
.score-B  { color: #2563eb; font-weight: 700; }
.score-C  { color: #d97706; font-weight: 700; }
.score-D  { color: #ea580c; font-weight: 700; }
.score-F  { color: #dc2626; font-weight: 700; }

.type-required { background: #fef3c7; color: #92400e; }
.type-elective { background: #dbeafe; color: #1e40af; }
.type-public   { background: #dcfce7; color: #166534; }

.progress-bar-wrap {
  height: 6px; background: var(--gray-200); border-radius: 3px; overflow: hidden;
}
.progress-bar {
  height: 100%; border-radius: 3px;
  background: var(--primary); transition: width .4s ease;
}
.progress-bar.full  { background: var(--danger); }
.progress-bar.high  { background: var(--warning); }

.announce-list { display: flex; flex-direction: column; gap: 10px; }
.announce-item {
  background: #fff; border-radius: var(--radius);
  padding: 14px 18px; box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--primary);
}
.announce-title { font-size: 14px; font-weight: 700; margin-bottom: 4px; }
.announce-body  { font-size: 13px; color: var(--gray-600); line-height: 1.6; }
.announce-meta  { font-size: 12px; color: var(--gray-400); margin-top: 6px; }

.grade-table input[type="number"] {
  width: 80px; padding: 5px 8px; text-align: center;
  border: 1.5px solid var(--gray-200); border-radius: 5px;
  font-size: 13px;
}
.grade-table input[type="number"]:focus { border-color: var(--primary); outline: none; }
.grade-auto-tag {
  display: inline-block; padding: 2px 8px; border-radius: 4px;
  font-size: 12px; font-weight: 700; min-width: 36px; text-align: center;
}

.schedule-tag {
  display: inline-block;
  background: var(--primary-light); color: var(--primary);
  padding: 2px 8px; border-radius: 4px;
  font-size: 12px; font-weight: 600; margin: 1px;
}

.gpa-ring-wrap {
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; padding: 16px 0;
}
.gpa-big { font-size: 48px; font-weight: 900; color: var(--primary); line-height: 1; }
.gpa-label { font-size: 13px; color: var(--gray-400); margin-top: 4px; }
.gpa-detail-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 12px; margin-top: 16px;
}
.gpa-detail-item { text-align: center; padding: 10px; background: var(--gray-50); border-radius: var(--radius); }
.gpa-detail-num  { font-size: 20px; font-weight: 800; color: var(--gray-800); }
.gpa-detail-lbl  { font-size: 12px; color: var(--gray-400); margin-top: 2px; }

/* ══════════════════════════════════════
   响应式 — 移动端适配
   ══════════════════════════════════════ */

@media (max-width: 768px) {
  #app { padding-top: 52px; height: 100vh; overflow: hidden; }
  .mobile-topbar { display: flex; }
  .layout { flex-direction: column; height: calc(100vh - 52px); overflow: hidden; }
  .sidebar {
    position: fixed;
    top: 52px; left: 0; bottom: 0;
    width: 75vw; max-width: 280px;
    transform: translateX(-100%);
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    z-index: 850; overflow-y: auto;
  }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { flex: 1; display: flex; flex-direction: column; overflow: hidden; min-height: 0; }
  .topbar { display: none; }
  .content { flex: 1; overflow-y: auto; padding: 14px 12px; -webkit-overflow-scrolling: touch; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-num { font-size: 22px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .card-header { padding: 12px 14px; }
  .card-body   { padding: 12px 14px; }
  .toolbar { gap: 7px; }
  .search-wrap { min-width: 120px; max-width: none; flex: 1; }
  .filter-select { font-size: 12px; padding: 7px 8px; }
  .dash-grid { grid-template-columns: 1fr !important; }
  .gpa-layout { grid-template-columns: 1fr !important; }
  .modal { width: 100vw !important; max-width: 100vw; max-height: 92vh; border-radius: 16px 16px 0 0; margin-top: auto; }
  .modal-overlay { align-items: flex-end; }
  .modal-overlay.open .modal { transform: scale(1) translateY(0); }
  .modal-header { padding: 16px 18px 0; }
  .modal-body   { padding: 14px 18px; }
  .modal-footer { padding: 0 18px 16px; flex-wrap: wrap; gap: 8px; }
  .modal-footer .btn { flex: 1; justify-content: center; }
  #toast { right: 50%; bottom: calc(env(safe-area-inset-bottom, 0px) + 20px); transform: translateX(50%) translateY(80px); max-width: calc(100vw - 32px); }
  #toast.show { transform: translateX(50%) translateY(0); }
  .logout-confirm-box { width: calc(100vw - 40px); padding: 24px 20px 18px; }
  .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  th, td { padding: 8px 10px; font-size: 12.5px; white-space: nowrap; }
  .pagination { padding: 10px 12px; justify-content: center; flex-wrap: wrap; }
  .btn { white-space: nowrap; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .stat-card  { padding: 14px 12px; gap: 10px; }
  .stat-icon  { width: 40px; height: 40px; font-size: 18px; }
  .stat-num   { font-size: 20px; }
  .portal-cards { grid-template-columns: 1fr; gap: 12px; }
  .portal-card  { padding: 22px 16px 18px; }
  .gpa-detail-grid { grid-template-columns: 1fr 1fr; }
  .toolbar .btn { padding: 7px 10px; font-size: 12.5px; }
}