:root{--apple-blue: #007AFF;--apple-blue-hover: #0056D6;--apple-blue-light: #E3F2FF;--apple-green: #34C759;--apple-green-light: #E8F5E9;--apple-orange: #FF9500;--apple-orange-light: #FFF3E0;--apple-pink: #FF2D55;--apple-pink-light: #FCE4EC;--apple-purple: #AF52DE;--apple-purple-light: #F3E5F5;--apple-red: #FF3B30;--apple-red-light: #FFEBEE;--apple-teal: #5AC8FA;--apple-teal-light: #E0F7FA;--apple-yellow: #FFCC00;--apple-yellow-light: #FFFDE7;--apple-gray: #8E8E93;--apple-gray2: #AEAEB2;--apple-gray3: #C7C7CC;--apple-gray4: #D1D1D6;--apple-gray5: #E5E5EA;--apple-gray6: #F2F2F7;--bg-primary: #FFFFFF;--bg-secondary: #F5F5F7;--bg-tertiary: #FAFAFA;--bg-sidebar: #FFFFFF;--text-primary: #1D1D1F;--text-secondary: #86868B;--text-tertiary: #A1A1A6;--text-inverse: #FFFFFF;--border-light: #E5E5EA;--border-medium: #D1D1D6;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .02);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .04);--shadow: 0 2px 8px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .12);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .16);--shadow-glow: 0 0 0 4px rgba(0, 122, 255, .15);--radius-xs: 6px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-2xl: 24px;--radius-full: 9999px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--font-sf: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1);--transition-spring: .5s cubic-bezier(.34, 1.56, .64, 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var(--space-6);border-bottom:1px solid var(--border-light)}.sidebar-logo h1{color:var(--text-primary);font-size:20px;font-weight:700;margin:0;letter-spacing:-.02em;background:linear-gradient(135deg,var(--apple-blue),var(--apple-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-menu{flex:1;padding:var(--space-4) 0;overflow-y:auto}.menu-item{display:flex;align-items:center;padding:10px var(--space-4);margin:2px var(--space-3);color:var(--text-secondary);text-decoration:none;transition:all var(--transition-fast);border-radius:var(--radius-md);font-size:14px;font-weight:500;position:relative;overflow:hidden}.menu-item:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%) scaleY(0);width:3px;height:20px;background:var(--apple-blue);border-radius:0 2px 2px 0;transition:transform var(--transition-fast)}.menu-item:hover{background:var(--bg-secondary);color:var(--text-primary)}.menu-item.active{background:linear-gradient(135deg,#007aff1a,#af52de0d);color:var(--apple-blue)}.menu-item.active:before{transform:translateY(-50%) scaleY(1)}.menu-item .icon{width:20px;height:20px;margin-right:var(--space-3);opacity:.7;transition:all var(--transition-fast)}.menu-item:hover .icon,.menu-item.active .icon{opacity:1}.sidebar-footer{padding:var(--space-4) var(--space-4);border-top:1px solid var(--border-light);margin:0 var(--space-3)}.user-info{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3);background:var(--bg-secondary);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.user-info:hover{background:var(--border-light)}.user-avatar{width:36px;height:36px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--apple-blue),var(--apple-purple));display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;color:#fff;box-shadow:var(--shadow-sm)}.user-name{font-size:14px;font-weight:600;color:var(--text-primary)}.user-role{font-size:12px;color:var(--text-secondary);margin-top:2px}.admin-main{flex:1;margin-left:260px;min-height:100vh;display:flex;flex-direction:column}.admin-header{height:56px;background:#fffc;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.05);display:flex;align-items:center;justify-content:space-between;padding:0 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var(--transition-normal)}.stat-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.stat-card:hover:before{opacity:1}.stat-header{display:flex;align-items:center;gap:var(--space-3);margin-bottom:var(--space-3)}.stat-icon{width:40px;height:40px;border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-size:18px;transition:transform var(--transition-spring)}.stat-card:hover .stat-icon{transform:scale(1.1)}.stat-icon.blue{background:var(--apple-blue-light);color:var(--apple-blue)}.stat-icon.green{background:var(--apple-green-light);color:var(--apple-green)}.stat-icon.orange{background:var(--apple-orange-light);color:var(--apple-orange)}.stat-icon.purple{background:var(--apple-purple-light);color:var(--apple-purple)}.stat-icon.pink{background:var(--apple-pink-light);color:var(--apple-pink)}.stat-label{font-size:13px;color:var(--text-secondary);font-weight:500;letter-spacing:0}.stat-value{font-size:28px;font-weight:700;color:var(--text-primary);line-height:1.2;margin-bottom:var(--space-1);letter-spacing:-.02em}.stat-change{font-size:12px;color:var(--apple-green);font-weight:600;display:flex;align-items:center;gap:4px}.stat-change.negative{color:var(--apple-red)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 18px;border-radius:var(--radius-md);font-size:14px;font-weight:600;cursor:pointer;transition:all var(--transition-fast);border:none;outline:none;letter-spacing:-.01em;position:relative;overflow:hidden}.btn:after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;background:#fff3;border-radius:50%;transform:translate(-50%,-50%);transition:width .6s,height .6s}.btn:active:after{width:200px;height:200px}.btn-primary{background:linear-gradient(135deg,var(--apple-blue),#5856D6);color:#fff;box-shadow:0 2px 8px #007aff4d}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #007aff66}.btn-secondary{background:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--border-medium)}.btn-secondary:hover{background:var(--border-light);border-color:var(--border-medium)}.btn-danger{background:var(--apple-red);color:#fff}.btn-danger:hover{background:#e53935;transform:translateY(-1px)}.btn-sm{padding:6px 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10px;border-radius:var(--radius-full);font-size:12px;font-weight:600;letter-spacing:0}.status-tag:before{content:"";width:5px;height:5px;border-radius:50%}.status-tag.published{background:var(--apple-green-light);color:var(--apple-green)}.status-tag.published:before{background:var(--apple-green)}.status-tag.draft{background:var(--apple-gray6);color:var(--apple-gray)}.status-tag.draft:before{background:var(--apple-gray)}.search-bar{display:flex;gap:var(--space-3);margin-bottom:var(--space-5)}.search-input{flex:1;max-width:320px;position:relative}.search-input input{width:100%;padding:10px 14px 10px 38px;border:1px solid var(--border-medium);border-radius:var(--radius-md);font-size:14px;transition:all var(--transition-fast);background:var(--bg-primary);font-family:var(--font-sf);font-weight:500}.search-input input:hover{border-color:var(--apple-gray3)}.search-input input:focus{outline:none;border-color:var(--apple-blue);box-shadow:var(--shadow-glow)}.search-input .search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-tertiary);transition:color var(--transition-fast)}.search-input input:focus+.search-icon,.search-input:hover .search-icon{color:var(--apple-blue)}.form-group{margin-bottom:var(--space-5)}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-2);letter-spacing:-.01em}.form-label .required{color:var(--apple-red);margin-left:2px}.form-input{width:100%;padding:11px 14px;border:1px solid var(--border-medium);border-radius:var(--radius-md);font-size:15px;transition:all var(--transition-fast);background:var(--bg-primary);font-family:var(--font-sf);font-weight:500;letter-spacing:-.01em}.form-input:hover{border-color:var(--apple-gray3)}.form-input:focus{outline:none;border-color:var(--apple-blue);box-shadow:var(--shadow-glow)}.form-input::placeholder{color:var(--text-tertiary);font-weight:400}.login-container{height:100vh;display:flex;justify-content:center;align-items:center;background:linear-gradient(180deg,#fafafa,#f0f0f5);position:relative;overflow:hidden}.login-container:before{content:"";position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(0,122,255,.06) 0%,transparent 70%);top:-200px;right:-100px}.login-container:after{content:"";position:absolute;width:400px;height:400px;background:radial-gradient(circle,rgba(175,82,222,.04) 0%,transparent 70%);bottom:-100px;left:-100px}.login-box{width:400px;padding:var(--space-10);background:var(--bg-primary);border-radius:var(--radius-2xl);box-shadow:var(--shadow-xl);position:relative;z-index:1;border:1px solid var(--border-light)}.login-box h1{text-align:center;margin-bottom:var(--space-1);font-size:26px;font-weight:700;color:var(--text-primary);letter-spacing:-.02em}.login-box .subtitle{text-align:center;color:var(--text-secondary);margin-bottom:var(--space-8);font-size:14px;font-weight:500}.upload-preview{width:100%;max-width:280px;margin-top:var(--space-3);border-radius:var(--radius-lg);overflow:hidden;border:2px dashed var(--border-medium);transition:all var(--transition-fast)}.upload-preview:hover{border-color:var(--apple-blue)}.upload-preview img{width:100%;display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-10px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-fade-in{animation:fadeIn .4s cubic-bezier(.4,0,.2,1)}.animate-slide-in{animation:slideIn .3s cubic-bezier(.4,0,.2,1)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-12);color:var(--text-secondary);text-align:center}.empty-state-icon{width:72px;height:72px;border-radius:var(--radius-xl);background:linear-gradient(135deg,var(--bg-secondary),var(--bg-tertiary));display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-4);border:1px solid var(--border-light)}.empty-state-title{font-size:16px;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-1)}.empty-state-desc{font-size:14px;color:var(--text-secondary);max-width:300px}.tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:var(--radius-full);font-size:12px;font-weight:600;letter-spacing:0}.tag-blue{background:var(--apple-blue-light);color:var(--apple-blue)}.tag-green{background:var(--apple-green-light);color:var(--apple-green)}.tag-orange{background:var(--apple-orange-light);color:var(--apple-orange)}.tag-purple{background:var(--apple-purple-light);color:var(--apple-purple)}.tag-gray{background:var(--apple-gray6);color:var(--apple-gray)}.skeleton{background:linear-gradient(90deg,var(--bg-secondary) 25%,var(--bg-tertiary) 50%,var(--bg-secondary) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;border-radius:var(--radius-md)}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media (max-width: 768px){.admin-sidebar{transform:translate(-100%)}.admin-sidebar.open{transform:translate(0)}.admin-main{margin-left:0}.stats-grid{grid-template-columns:repeat(2,1fr)}.page-header{flex-direction:column;gap:var(--space-3);align-items:flex-start}.admin-content{padding:var(--space-4)}.login-box{width:calc(100% - var(--space-8));margin:0 var(--space-4)}}@media (max-width: 480px){.stats-grid{grid-template-columns:1fr}}