:root{--primary-color: #000000;--primary-hover: #333333;--secondary-color: #f1f1f1;--secondary-hover: #e5e5e5;--accent-color: #000000;--success: #10b981;--warning: #f59e0b;--error: #ef4444;--info: #3b82f6;--white: #ffffff;--black: #000000;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--bg-primary: #ffffff;--bg-secondary: #f7f7f8;--bg-tertiary: #f1f1f1;--text-primary: #000000;--text-secondary: #4b5563;--text-tertiary: #6b7280;--border-color: #e5e7eb;--space-xs: .25rem;--space-sm: .5rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--space-2xl: 3rem;--space-3xl: 4rem;--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--radius-sm: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--primary-500: var(--primary-color);--primary-600: var(--primary-hover);--primary-100: var(--gray-100);--primary-700: var(--black);--glass-bg: rgba(255, 255, 255, .9);--glass-border: rgba(229, 231, 235, .5);--glass-blur: blur(8px)}html{font-size:75%}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);font-size:var(--font-size-base);line-height:1.6;color:var(--text-primary);background-color:var(--bg-secondary);min-height:100vh}h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.2;margin-bottom:var(--space-md);color:var(--text-primary);letter-spacing:-.02em}h1{font-size:2.5rem}h2{font-size:2rem}h3{font-size:1.5rem}h4{font-size:1.25rem}p{margin-bottom:var(--space-md)}a{color:var(--text-primary);text-decoration:none;font-weight:500;transition:color var(--transition-fast)}a:hover{text-decoration:underline}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--space-lg)}.container-narrow{max-width:800px}.card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);padding:var(--space-xl);box-shadow:var(--shadow-sm);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:.75rem 1.5rem;font-family:var(--font-sans);font-size:.95rem;font-weight:600;line-height:1.5;text-align:center;border:1px solid transparent;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-base);white-space:nowrap;-webkit-user-select:none;user-select:none;text-decoration:none!important}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--black);color:var(--white);border-color:var(--black)}.btn-primary:hover:not(:disabled){background-color:var(--gray-800);border-color:var(--gray-800);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--white);color:var(--black);border:1px solid var(--gray-300)}.btn-secondary:hover:not(:disabled){background-color:var(--gray-50);border-color:var(--black);transform:translateY(-1px)}.btn-accent{background-color:var(--black);color:var(--white)}.btn-accent:hover:not(:disabled){background-color:var(--gray-800);transform:translateY(-1px)}.btn-danger{background-color:var(--white);color:var(--error);border:1px solid var(--error)}.btn-danger:hover:not(:disabled){background-color:#fef2f2}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.btn-lg{padding:1rem 2rem;font-size:1.125rem}.form-group{margin-bottom:var(--space-lg)}.form-label{display:block;font-weight:600;margin-bottom:var(--space-xs);color:var(--text-primary);font-size:.95rem}.form-input,.form-select,.form-textarea{width:100%;padding:.75rem 1rem;font-family:var(--font-sans);font-size:1rem;color:var(--text-primary);background:var(--bg-primary);border:1px solid var(--gray-300);border-radius:var(--radius-lg);transition:all var(--transition-base);outline:none}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--black);box-shadow:0 0 0 2px #0000000d}.badge{display:inline-flex;align-items:center;padding:.25rem .75rem;font-size:.75rem;font-weight:600;border-radius:var(--radius-full);text-transform:uppercase;letter-spacing:.05em}.badge-primary{background:var(--gray-100);color:var(--black);border:1px solid var(--gray-200)}.badge-success{background:#dcfce7;color:#166534}.badge-error{background:#fee2e2;color:#991b1b}.badge-warning{background:#fef3c7;color:#92400e}.grid{display:grid;gap:var(--space-lg)}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.text-center{text-align:center}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media (max-width: 768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:40px;height:40px;border:3px solid var(--gray-200);border-top-color:var(--black);border-radius:50%;animation:spin .8s linear infinite}.alert{padding:var(--space-md);border-radius:var(--radius-md);margin-bottom:var(--space-md);border:1px solid transparent}.alert-info{background:#eff6ff;color:#1e40af;border-color:#dbeafe}.alert-error{background:#fef2f2;color:#991b1b;border-color:#fee2e2}