*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #2ecc71;--secondary-color: #3498db;--danger-color: #e74c3c;--text-dark: #333;--text-light: #666;--border-color: #ddd}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;flex-direction:column}.auth-container{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.auth-wrapper{width:100%;max-width:450px;animation:fadeInUp .5s ease-out}.auth-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;overflow:hidden}.auth-header{background:linear-gradient(135deg,#2ecc71,#27ae60);color:#fff;padding:30px;text-align:center}.auth-header-icon{font-size:48px;margin-bottom:10px;animation:bounce 1s ease-in-out infinite}.auth-header h1{font-size:28px;font-weight:700;margin:0 0 5px}.auth-header p{font-size:14px;opacity:.9;margin:0}.auth-body{padding:40px 30px}.form-group{margin-bottom:25px}.form-label{display:block;font-size:14px;font-weight:600;color:var(--text-dark);margin-bottom:8px}.input-group{position:relative;display:flex;align-items:center}.input-icon{position:absolute;left:15px;color:var(--text-light);font-size:16px;z-index:1;pointer-events:none}.form-input{width:100%;padding:12px 15px 12px 45px;font-size:14px;border:2px solid var(--border-color);border-radius:8px;background-color:#fff;color:var(--text-dark);transition:all .3s ease}.form-input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 4px #2ecc711a}.form-input.is-invalid{border-color:var(--danger-color)}.form-input.is-invalid:focus{box-shadow:0 0 0 4px #e74c3c1a}.invalid-feedback{display:block;color:var(--danger-color);font-size:13px;margin-top:5px}.btn-submit{width:100%;padding:14px;font-size:16px;font-weight:600;color:#fff;background:linear-gradient(135deg,#2ecc71,#27ae60);border:none;border-radius:8px;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:.5px}.btn-submit:hover{transform:translateY(-2px);box-shadow:0 8px 20px #2ecc7166}.btn-submit:active{transform:translateY(0)}.auth-footer{padding:20px 30px;background-color:#f8f9fa;text-align:center;border-top:1px solid var(--border-color)}.auth-footer-text{font-size:14px;color:var(--text-light);margin:0}.auth-footer-link{color:var(--primary-color);text-decoration:none;font-weight:600;transition:color .3s ease}.auth-footer-link:hover{color:#27ae60;text-decoration:underline}.alert{padding:12px 15px;border-radius:8px;margin-bottom:20px;display:flex;align-items:center;gap:10px;font-size:14px;animation:slideDown .3s ease-out}.alert-danger{background-color:#fee;border:1px solid #fcc;color:#c33}.alert-success{background-color:#efe;border:1px solid #cfc;color:#3c3}.alert i{font-size:18px}.password-toggle{position:absolute;right:15px;cursor:pointer;color:var(--text-light);font-size:16px;transition:color .3s ease;z-index:1}.password-toggle:hover{color:var(--primary-color)}.form-help{display:block;font-size:12px;color:var(--text-light);margin-top:5px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.auth-decoration{position:fixed;pointer-events:none;opacity:.1}.auth-decoration-1{top:10%;left:5%;font-size:100px;color:#fff;animation:float 6s ease-in-out infinite}.auth-decoration-2{bottom:10%;right:5%;font-size:120px;color:#fff;animation:float 8s ease-in-out infinite;animation-delay:1s}@keyframes float{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-20px) rotate(5deg)}}@media(max-width:768px){.auth-wrapper{max-width:100%}.auth-header{padding:25px 20px}.auth-header h1{font-size:24px}.auth-body{padding:30px 20px}.auth-footer{padding:15px 20px}.auth-decoration{display:none}}@media(max-width:480px){.auth-header-icon{font-size:40px}.auth-header h1{font-size:22px}.form-input{font-size:16px}}.btn-submit:disabled{opacity:.6;cursor:not-allowed}.btn-submit.loading{position:relative;color:transparent}.btn-submit.loading:after{content:"";position:absolute;width:20px;height:20px;top:50%;left:50%;margin-left:-10px;margin-top:-10px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}