.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.5rem;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary) 0%,var(--accent-purple) 50%,var(--primary-600) 100%);border-radius:var(--radius-lg) var(--radius-lg) 0 0;opacity:0;transition:opacity .3s ease}.card:hover{box-shadow:var(--shadow-lg);border-color:var(--primary-200);transform:translateY(-2px)}.card:hover:before{opacity:1}.btn{padding:.5rem 1rem;border-radius:var(--radius);font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s ease;border:none;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-600) 100%);color:#fff;font-weight:600;box-shadow:0 4px 12px #2563eb40;border:none;position:relative;overflow:hidden}.btn-primary:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s ease}.btn-primary:hover:not(:disabled):before{left:100%}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--primary-600) 0%,var(--primary) 100%);box-shadow:0 6px 16px #2563eb59;transform:translateY(-2px)}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--surface-2)}.btn-ghost{background:transparent;color:var(--text)}.btn-ghost:hover:not(:disabled){background:var(--surface-2)}.btn-destructive{background:transparent;color:var(--danger);border:1px solid var(--border)}.btn-destructive:hover:not(:disabled){background:#dc26261a;border-color:var(--danger)}.btn-sm{padding:.375rem .75rem;font-size:.8125rem}.btn-lg{padding:.75rem 1.5rem;font-size:1rem}.page-header{margin-bottom:2.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--border-light)}.page-header-content{display:flex;justify-content:space-between;align-items:flex-start;gap:1.5rem}.page-header-title{font-size:2rem;font-weight:700;color:var(--text);margin:0 0 .5rem;line-height:1.2;letter-spacing:-.02em}.page-header-subtitle{font-size:.9375rem;color:var(--text-muted);margin:0;line-height:1.6;font-weight:400}.page-header-actions{display:flex;gap:.75rem;align-items:center}.sidebar{width:260px;background:var(--sidebar-bg);height:100vh;position:fixed;left:0;top:0;overflow-y:auto;z-index:100;box-shadow:4px 0 24px #0000001f;display:flex;flex-direction:column}.sidebar-logo{padding:1.5rem 1rem;border-bottom:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;gap:.75rem;background:#ffffffeb;min-height:88px;height:88px;box-sizing:border-box}.sidebar-logo img{height:48px;width:auto;max-width:100%;transition:transform .2s ease}.sidebar-logo:hover img{transform:scale(1.05)}.sidebar-logo-text{font-size:1.25rem;font-weight:700;color:var(--sidebar-text);letter-spacing:-.02em}.sidebar-nav{padding:1.5rem 0;flex:1}.sidebar-nav-item{display:flex;align-items:center;gap:.75rem;padding:.875rem 1.25rem;color:var(--sidebar-text-muted);text-decoration:none;transition:all .2s ease;font-size:.9375rem;font-weight:500;border-left:3px solid transparent;margin:.25rem .75rem;border-radius:var(--radius);position:relative}.sidebar-nav-item:hover{background:var(--sidebar-hover);color:var(--sidebar-text);transform:translate(2px)}.sidebar-nav-item.active{background:var(--sidebar-active);color:var(--sidebar-text);border-left-color:#fffc;font-weight:600;box-shadow:0 2px 8px #0000001a}.sidebar-nav-item-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;color:inherit}.sidebar-nav-item.sub{margin-left:1.25rem;padding-left:1rem;font-size:.9rem;opacity:.95}.sidebar-nav-item.sub:before{content:none}.sidebar-footer{padding:1.25rem;border-top:1px solid rgba(255,255,255,.1);background:#00000026;margin-top:auto;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.sidebar-footer button:hover svg:last-child{transform:translate(2px)}.main-layout{display:flex;min-height:100vh;background:var(--bg)}.main-content{flex:1;margin-left:260px;min-height:100vh;background:var(--bg);position:relative}.main-content:before{content:"";position:fixed;top:0;left:260px;right:0;bottom:0;background:radial-gradient(circle at 80% 20%,rgba(99,102,241,.04) 0%,transparent 50%),radial-gradient(circle at 20% 80%,rgba(37,99,235,.03) 0%,transparent 50%);pointer-events:none;z-index:0}.main-content-header{background:var(--surface);border-bottom:1px solid var(--border);padding:1rem 1.5rem;position:sticky;top:0;z-index:50;box-shadow:0 1px #0f172a0a,0 8px 24px #0f172a0f;color:var(--text);position:relative;min-height:88px;height:88px;box-sizing:border-box;display:flex;align-items:center}.main-content-header:after{content:none}.main-content-body{padding:2.5rem;max-width:1400px;margin:0 auto;position:relative;z-index:1}.app-shell{background:var(--bg);color:var(--text);min-height:100vh}:root{--bg: #F8FAFC;--bg-gradient: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);--surface: #FFFFFF;--surface-2: #F9FAFB;--surface-hover: #FFFFFF;--text: #0F172A;--text-muted: #64748B;--text-light: #94A3B8;--border: #E2E8F0;--border-light: #F1F5F9;--primary: #2563EB;--primary-50: #EFF6FF;--primary-100: #DBEAFE;--primary-200: #BFDBFE;--primary-300: #93C5FD;--primary-400: #60A5FA;--primary-500: #3B82F6;--primary-600: #2563EB;--primary-700: #1D4ED8;--primary-800: #1E40AF;--primary-900: #1E3A8A;--sidebar-bg: linear-gradient(180deg, #1E3A8A 0%, #1E40AF 100%);--sidebar-text: #FFFFFF;--sidebar-text-muted: rgba(255, 255, 255, .7);--sidebar-hover: rgba(255, 255, 255, .1);--sidebar-active: rgba(255, 255, 255, .15);--header-bg: var(--surface);--header-text: var(--text);--accent-purple: #6366F1;--accent-indigo: #4F46E5;--accent-teal: #14B8A6;--accent-cyan: #06B6D4;--success: #16A34A;--success-50: #F0FDF4;--success-100: #DCFCE7;--danger: #DC2626;--danger-50: #FEF2F2;--danger-100: #FEE2E2;--warning: #F59E0B;--warning-50: #FFFBEB;--radius: 10px;--radius-sm: 6px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, .05);--shadow-md: 0 4px 6px -1px rgba(15, 23, 42, .1), 0 2px 4px -1px rgba(15, 23, 42, .06);--shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, .1), 0 4px 6px -2px rgba(15, 23, 42, .05);--shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, .1), 0 10px 10px -5px rgba(15, 23, 42, .04);--shadow-colored: 0 10px 25px -5px rgba(37, 99, 235, .3);--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem}:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;min-width:320px;min-height:100vh;width:100%}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:all .25s ease}button:hover{filter:brightness(1.15)}button:disabled{opacity:.6;cursor:not-allowed}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}input[type=file]::-webkit-file-upload-icon{display:none}input[type=file]:after{content:"📄";position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:18px;pointer-events:none;color:#667eea}input[type=file]{position:relative}input[type=file]::file-selector-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:.5rem 1.25rem;border-radius:8px;cursor:pointer;font-weight:600;transition:filter .25s ease}input[type=file]::file-selector-button:hover{filter:brightness(1.15)}select{background-color:#fff!important;color:#333;border:1px solid #d1d5db;border-radius:8px;padding:.75rem;font-size:1rem;appearance:none;-webkit-appearance:none;-moz-appearance:none}select option{background-color:#fff;color:#333}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}