:root{--primary: #2563eb;--primary-hover: #1d4ed8;--primary-light: #dbeafe;--background: #ffffff;--background-secondary: #f8fafc;--border: #e2e8f0;--text: #1e293b;--text-secondary: #64748b;--text-muted: #94a3b8;--success: #16a34a;--warning: #ca8a04;--error: #dc2626;--header-height: 64px;--sidebar-width: 240px;--radius: 8px;--shadow: 0 1px 3px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--background-secondary);color:var(--text);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}.card{background:var(--background);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.card-title{font-size:1.25rem;font-weight:600;margin-bottom:16px;color:var(--text)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;text-decoration:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--background);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--background-secondary)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover{background:#b91c1c}.form-group{margin-bottom:20px}.form-label{display:block;margin-bottom:8px;font-weight:500;color:var(--text)}.form-input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:14px;transition:border-color .2s}.form-input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light)}.form-input::placeholder{color:var(--text-muted)}.table{width:100%;border-collapse:collapse}.table th,.table td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}.table th{font-weight:600;color:var(--text-secondary);font-size:13px;text-transform:uppercase;letter-spacing:.05em}.table tr:hover{background:var(--background-secondary)}.loading{display:flex;align-items:center;justify-content:center;min-height:200px;color:var(--text-secondary)}.empty-state{text-align:center;padding:48px 24px;color:var(--text-secondary)}.empty-state-icon{font-size:48px;margin-bottom:16px;opacity:.5}@media (max-width: 768px){:root{--sidebar-width: 0}.container{padding:0 16px}.card{padding:16px}}