* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f0f2f5; color: #333; }

/* --- 登录 --- */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, #1a1a2e, #0f3460); }
.login-card { background: #fff; border-radius: 16px; padding: 48px 40px; width: 420px; text-align: center; box-shadow: 0 16px 64px rgba(0,0,0,0.3); }
.login-card h1 { font-size: 32px; color: #1a1a2e; margin-bottom: 8px; }
.login-sub { color: #999; margin-bottom: 32px; font-size: 14px; }
.form-group { margin-bottom: 20px; text-align: left; }
.form-group label { display: block; font-size: 13px; color: #666; margin-bottom: 6px; font-weight: 500; }
.form-group input { width: 100%; padding: 12px 16px; border: 2px solid #e8e8e8; border-radius: 8px; font-size: 15px; outline: none; transition: border .2s; }
.form-group input:focus { border-color: #0f3460; }
#loginBtn { width: 100%; padding: 14px; background: linear-gradient(135deg, #1a1a2e, #0f3460); color: #fff; border: none; border-radius: 8px; font-size: 16px; font-weight: 600; cursor: pointer; }
#loginBtn:hover { opacity: 0.9; }
.error-msg { color: #e74c3c; margin-top: 12px; font-size: 13px; }

/* --- 管理界面 --- */
.admin-page { display: flex; min-height: 100vh; }
.sidebar { width: 220px; background: #1a1a2e; color: #fff; display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; }
.sidebar-header { padding: 24px 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header h2 { font-size: 20px; }
.sidebar-header span { font-size: 12px; opacity: 0.5; }
.nav-list { list-style: none; padding: 12px 0; flex: 1; }
.nav-item { padding: 14px 20px; cursor: pointer; font-size: 15px; transition: background .2s; }
.nav-item:hover { background: rgba(255,255,255,0.05); }
.nav-item.active { background: rgba(255,255,255,0.12); border-right: 3px solid #ff9800; }
.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.sidebar-footer button { width: 100%; padding: 10px; background: rgba(255,255,255,0.1); color: #fff; border: none; border-radius: 6px; cursor: pointer; font-size: 14px; }
.sidebar-footer button:hover { background: rgba(255,255,255,0.2); }

/* --- 内容区 --- */
.content { margin-left: 220px; padding: 32px; flex: 1; }
.content h3 { font-size: 22px; margin-bottom: 24px; color: #1a1a2e; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* --- 表单 --- */
.form-card { background: #fff; border-radius: 12px; padding: 28px; box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: #666; margin-bottom: 6px; font-weight: 500; }
.field input, .field select { width: 100%; max-width: 480px; padding: 10px 14px; border: 2px solid #e8e8e8; border-radius: 6px; font-size: 14px; outline: none; }
.field input:focus { border-color: #0f3460; }
button { padding: 10px 24px; background: #0f3460; color: #fff; border: none; border-radius: 6px; font-size: 14px; font-weight: 500; cursor: pointer; }
button:hover { opacity: 0.9; }

.btn-save { margin-top: 16px; }
.btn-add { background: #27ae60; margin-bottom: 12px; }
.btn-del { background: #e74c3c; padding: 6px 16px; font-size: 12px; }
.hint { font-size: 12px; color: #999; margin: 8px 0 0; }

/* --- 图片列表 --- */
.image-list { margin-bottom: 16px; }
.image-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid #f0f0f0; }
.image-item span { font-size: 14px; color: #555; }
.image-item button { background: #e74c3c; padding: 4px 12px; font-size: 12px; }
.add-row { display: flex; gap: 8px; margin-bottom: 12px; }
.add-row input { flex: 1; padding: 10px 14px; border: 2px solid #e8e8e8; border-radius: 6px; font-size: 14px; }

/* --- 编辑卡片 --- */
.edit-card { background: #fafafa; border-radius: 10px; padding: 20px; margin-bottom: 16px; border: 1px solid #eee; }
.edit-card-row { display: flex; align-items: center; margin-bottom: 10px; }
.edit-card-row label { width: 60px; font-size: 13px; color: #888; flex-shrink: 0; }
.edit-card-row input { flex: 1; padding: 8px 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; }

/* --- 表格 --- */
.data-table { width: 100%; background: #fff; border-radius: 12px; overflow: hidden; border-collapse: collapse; box-shadow: 0 2px 12px rgba(0,0,0,0.04); }
.data-table th { background: #fafafa; padding: 14px 16px; text-align: left; font-size: 13px; color: #888; font-weight: 600; border-bottom: 1px solid #eee; }
.data-table td { padding: 14px 16px; font-size: 14px; border-bottom: 1px solid #f5f5f5; }
.data-table tr:hover td { background: #fafafa; }
.stats-bar { background: #fff; border-radius: 8px; padding: 12px 16px; margin-bottom: 16px; font-size: 14px; color: #666; }
.filter-bar { margin-bottom: 16px; }
.filter-bar select { padding: 8px 14px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; }