:root{--color-primary: #2c3e50;--color-secondary: #18bc9c;--color-accent: #f39c12;--color-background: #f5f7fa;--color-text: #34495e;--color-text-light: #7f8c8d;--color-error: #e74c3c;--color-success: #27ae60;--font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;--border-radius: 6px;--transition-speed: .3s}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:var(--font-family);background-color:var(--color-background);color:var(--color-text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;display:flex;flex-direction:column}a{color:var(--color-secondary);text-decoration:none;transition:color var(--transition-speed)}a:hover,a:focus{color:var(--color-accent);outline:none}h1,h2,h3,h4,h5,h6{color:var(--color-primary);margin:0 0 .5rem;font-weight:600}p{margin:0 0 1rem;line-height:1.5;color:var(--color-text-light)}button{cursor:pointer;background-color:var(--color-secondary);border:none;color:#fff;padding:.6rem 1.2rem;font-size:1rem;border-radius:var(--border-radius);transition:background-color var(--transition-speed);font-weight:600}button:hover,button:focus{background-color:var(--color-accent);outline:none}button:disabled,button[disabled]{background-color:#bdc3c7;cursor:not-allowed}input,select,textarea{width:100%;padding:.5rem .75rem;border:1px solid #ccc;border-radius:var(--border-radius);font-size:1rem;font-family:var(--font-family);transition:border-color var(--transition-speed);color:var(--color-text)}input:focus,select:focus,textarea:focus{border-color:var(--color-secondary);outline:none;box-shadow:0 0 5px var(--color-secondary)}label{display:block;margin-bottom:.25rem;font-weight:600;color:var(--color-primary)}.container{max-width:960px;margin:2rem auto;padding:0 1rem;flex-grow:1}.header{background-color:var(--color-primary);color:#fff;padding:1rem 0;text-align:center;font-size:1.5rem;font-weight:700;-webkit-user-select:none;user-select:none}.navbar{display:flex;justify-content:center;gap:1rem;background-color:#34495e;padding:.5rem 0}.navbar a{color:#fff;font-weight:600;padding:.5rem 1rem;border-radius:var(--border-radius);transition:background-color var(--transition-speed)}.navbar a.active,.navbar a:hover{background-color:var(--color-secondary);color:#fff}.form-login,.form-register{max-width:400px;margin:3rem auto;background-color:#fff;padding:2rem;border-radius:var(--border-radius);box-shadow:0 2px 8px #0000001a}.form-group{margin-bottom:1.25rem}.error-message{color:var(--color-error);font-size:.875rem;margin-top:.25rem}.success-message{color:var(--color-success);font-size:.9rem;margin-bottom:1rem;font-weight:600}.table{width:100%;border-collapse:collapse;margin-top:1rem;background-color:#fff;border-radius:var(--border-radius);overflow:hidden;box-shadow:0 2px 8px #0000001a}.table th,.table td{padding:.75rem 1rem;border-bottom:1px solid #ddd;text-align:left;vertical-align:middle}.table th{background-color:var(--color-primary);color:#fff;font-weight:600;-webkit-user-select:none;user-select:none}.table tr:hover{background-color:#f0f3f5}.table tbody tr:last-child td{border-bottom:none}.spinner{border:4px solid #f3f3f3;border-top:4px solid var(--color-secondary);border-radius:50%;width:36px;height:36px;animation:spin 1s linear infinite;margin:2rem auto}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;bottom:1.5rem;right:1.5rem;background-color:var(--color-primary);color:#fff;padding:1rem 1.5rem;border-radius:var(--border-radius);box-shadow:0 2px 8px #0003;font-weight:600;z-index:1000;opacity:.95}@media (max-width: 600px){.container{margin:1rem;padding:0 .5rem}.form-login,.form-register{padding:1.5rem 1rem}.navbar{flex-direction:column;gap:.5rem}}