*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #2c3e50;--secondary-color: #3498db;--success-color: #27ae60;--warning-color: #f39c12;--danger-color: #e74c3c;--light-bg: #ecf0f1;--dark-text: #2c3e50;--border-color: #bdc3c7}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:16px;line-height:1.6;color:var(--dark-text);background-color:#f5f5f5}h1,h2,h3,h4,h5,h6{margin-bottom:1rem;font-weight:600}a{color:var(--secondary-color);text-decoration:none;transition:color .3s ease}a:hover{color:#217dbb}button{cursor:pointer;border:none;outline:none;font-family:inherit}.btn{padding:.75rem 1.5rem;border-radius:4px;font-weight:500;transition:all .3s ease}.btn-primary{background-color:var(--secondary-color);color:#fff}.btn-primary:hover{background-color:#217dbb}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-danger:hover{background-color:#d62c1a}.btn-success{background-color:var(--success-color);color:#fff}.btn-success:hover{background-color:#1e8449}.card{background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;padding:1.5rem;margin-bottom:1rem}.container{max-width:1200px;margin:0 auto;padding:0 1rem}input,textarea,select{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:4px;font-family:inherit;font-size:1rem;transition:border-color .3s ease}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--secondary-color)}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500}.error-message{color:var(--danger-color);font-size:.875rem;margin-top:.25rem}