[hidden] {
  display: none !important;
}

/* ============================================================
   Admin 后台样式
   保持简洁，Apple 风格的深色版
   ============================================================ */

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

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f7;
  --color-bg-soft: #fafafa;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  --color-border: #d2d2d7;
  --color-border-soft: #e8e8ed;
  --color-accent: #0066cc;
  --color-accent-hover: #0055b3;
  --color-danger: #ff3b30;
  --color-success: #34c759;
  --color-warning: #ff9500;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.14);

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
               "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-bg-alt);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; }

/* =================== 登录页 =================== */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  position: relative;
  overflow: hidden;
}

.login-wrap::before {
  content: '';
  position: absolute;
  top: -300px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1000px, 130vw);
  height: 720px;
  background: radial-gradient(circle at center, rgba(0, 102, 204, 0.10) 0%, rgba(0, 102, 204, 0) 65%);
  pointer-events: none;
}

.login-card {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border-soft);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  background: var(--color-text);
  color: white;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
}

.login-brand h1 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 2px;
}

.login-brand p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.field input,
.field textarea,
.field select {
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
  background: white;
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
  width: 100%;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.12);
}

.field textarea {
  resize: vertical;
  min-height: 80px;
  line-height: 1.5;
}

.btn-login {
  padding: 14px 24px;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 500;
  transition: background .2s;
  margin-top: 8px;
}

.btn-login:hover:not(:disabled) { background: var(--color-accent-hover); }
.btn-login:disabled { opacity: 0.6; cursor: not-allowed; }

.login-error {
  color: var(--color-danger);
  font-size: 13px;
  min-height: 20px;
}

.login-back {
  display: block;
  text-align: center;
  margin-top: 24px;
  font-size: 13px;
  color: var(--color-text-secondary);
  transition: color .2s;
}

.login-back:hover { color: var(--color-text); }

/* =================== 后台管理主页 =================== */
.admin-layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
}

.admin-sidebar {
  background: var(--color-bg-alt);
  padding: 28px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.admin-sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px 22px;
  margin-bottom: 10px;
}

.admin-sidebar-brand .brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  font-size: 16px;
  box-shadow: var(--shadow-sm);
}

.admin-sidebar-brand span {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.admin-nav-link {
  padding: 11px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background .18s var(--ease), color .18s var(--ease);
}

.admin-nav-link:hover { background: rgba(0,0,0,.05); color: var(--color-text); }

.admin-nav-link.active {
  background: white;
  color: var(--color-text);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.admin-sidebar-footer {
  margin-top: auto;
  padding: 18px 12px 6px;
  font-size: 13px;
  color: var(--color-text-secondary);
}

.admin-sidebar-footer a { transition: color .18s var(--ease); }
.admin-sidebar-footer a:hover { color: var(--color-accent); }

.admin-main {
  background: white;
  padding: 32px 40px 72px;
  min-width: 0;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  margin: -32px -40px 28px;
  padding: 18px 40px;
  background: rgba(255, 255, 255, 0.76);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border-soft);
}

.admin-header h1 {
  font-size: 26px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.admin-header-actions { display: flex; gap: 12px; align-items: center; }

/* 通用按钮 */
.btn {
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid var(--color-border);
  background: white;
  color: var(--color-text);
  transition: background .18s var(--ease), border-color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  letter-spacing: -0.005em;
}

.btn:hover { background: var(--color-bg-alt); }

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  box-shadow: 0 1px 2px rgba(0, 102, 204, 0.28);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn-danger { color: var(--color-danger); border-color: var(--color-border); background: white; }
.btn-danger:hover { background: var(--color-danger); border-color: var(--color-danger); color: white; }

.btn-sm { padding: 6px 12px; font-size: 13px; border-radius: 8px; }

/* 搜索栏 */
.admin-toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 22px;
  flex-wrap: wrap;
  align-items: center;
}

.admin-toolbar input,
.admin-toolbar select {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  background: white;
  color: var(--color-text);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.admin-toolbar input:focus,
.admin-toolbar select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(0, 102, 204, 0.12);
}

.admin-toolbar input { min-width: 260px; }

/* 作品表格 */
.artwork-table {
  width: 100%;
  background: white;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-soft);
  border-spacing: 0;
  border-collapse: separate;
}

.artwork-table th,
.artwork-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-soft);
  font-size: 14px;
}

.artwork-table th {
  background: var(--color-bg-alt);
  font-weight: 600;
  color: var(--color-text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.artwork-table tbody tr { transition: background .15s var(--ease); }

.artwork-table tbody tr:hover { background: var(--color-bg-soft); }

.artwork-table tbody tr:last-child td { border-bottom: none; }

.artwork-table .cell-cover {
  width: 56px;
  height: 56px;
  border-radius: 8px;
  object-fit: cover;
  background: var(--color-bg-alt);
}

.artwork-table .cell-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}


/* Badge */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 980px;
  font-size: 12px;
  font-weight: 500;
}

.badge-success { background: #e8f7ee; color: var(--color-success); }
.badge-warning { background: #fff5e6; color: var(--color-warning); }
.badge-secondary { background: var(--color-bg-alt); color: var(--color-text-secondary); }
.badge-danger { background: #ffe8e6; color: var(--color-danger); }

/* 上传表单 */
.upload-form {
  background: white;
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-border-soft);
  box-shadow: var(--shadow-sm);
}

.upload-form .field-group { margin-bottom: 22px; }

.upload-form .field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

/* 图片链接输入（外链方案，取代拖拽上传） */
.url-input-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.url-input-row textarea {
  flex: 1;
  min-height: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.6;
}

.preview-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.preview-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-alt);
}

.preview-item img { width: 100%; height: 100%; object-fit: cover; }

.preview-item-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(0,0,0,.7);
  color: white;
  border: none;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: overlayIn .2s var(--ease);
}

@keyframes overlayIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modalIn .26s var(--ease-out);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.modal-header h2 { font-size: 20px; font-weight: 600; letter-spacing: -0.02em; }

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-bg-alt);
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-secondary);
  transition: background .18s var(--ease), color .18s var(--ease);
}

.modal-close:hover { background: var(--color-border-soft); color: var(--color-text); }

/* Toast */
#toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--color-text);
  color: white;
  padding: 12px 18px;
  border-radius: 10px;
  font-size: 14px;
  box-shadow: var(--shadow-md);
  animation: toastIn .32s var(--ease-out);
  max-width: 360px;
  white-space: pre-wrap;
  word-break: break-word;
}

.toast.success { background: var(--color-success); }
.toast.error { background: var(--color-danger); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px) scale(0.96); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}

/* 空状态 */
.admin-empty {
  text-align: center;
  padding: 88px 20px;
  color: var(--color-text-secondary);
  background: var(--color-bg-soft);
  border: 1.5px dashed var(--color-border-soft);
  border-radius: var(--radius-md);
}

.admin-empty h3 {
  color: var(--color-text);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

/* 响应式 */
@media (max-width: 900px) {
  .admin-layout { grid-template-columns: 1fr; }

  .admin-sidebar {
    position: sticky;
    top: 0;
    height: auto;
    max-height: none;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    padding: 12px;
    z-index: 60;
  }

  .admin-sidebar-brand {
    flex-shrink: 0;
    padding: 6px 14px 6px 6px;
    margin-bottom: 0;
    border-right: 1px solid var(--color-border);
  }

  .admin-nav-link {
    flex-shrink: 0;
    padding: 9px 12px;
    font-size: 13px;
  }

  .admin-sidebar-footer {
    flex-shrink: 0;
    margin-top: 0;
    padding: 0;
  }

  .admin-main { padding: 20px; }

  .admin-header {
    margin: -20px -20px 22px;
    padding: 16px 20px;
  }

  .admin-header h1 { font-size: 22px; }

  .upload-form { padding: 22px; }
  .upload-form .field-row { grid-template-columns: 1fr; }

  .artwork-table th, .artwork-table td { padding: 10px 12px; font-size: 13px; }
  .artwork-table .cell-cover { width: 40px; height: 40px; }

  .admin-toolbar input { min-width: 0; width: 100%; }
}