:root{--primary:#4CAF50;--primary-dark:#388E3C;--primary-light:#81C784;--secondary:#2196F3;--success:#43a047;--danger:#e53935;--warning:#ff9800;--light:#ffffff;--dark:#2c3e50;--gray:#95a5a6;--light-gray:#f8f9fa}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI',system-ui,sans-serif;background:linear-gradient(135deg,#2196f3 45%,#388e3c 40%);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.auth-container{background:var(--light);border-radius:20px;width:100%;max-width:400px;position:relative;overflow:hidden}.auth-header{background:linear-gradient(135deg,var(--primary) 0,var(--secondary) 100%);padding:60px 30px 40px;text-align:center;position:relative}.logo-circle{width:50px;height:50px;background:var(--light);border-radius:50%;margin:0 auto 25px;display:flex;align-items:center;justify-content:center;border:5px solid rgba(255,255,255,.2);position:absolute;top:5px;left:50%;transform:translateX(-50%);z-index:2}.logo-circle i{font-size:1.5rem;background:linear-gradient(135deg,var(--primary) 0,var(--secondary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.auth-title{font-size:1.8rem;font-weight:700;color:var(--light);margin-bottom:8px}.auth-subtitle{font-size:1rem;color:rgba(255,255,255,.9);font-weight:400}.auth-content{padding:30px}.form-group{margin-bottom:25px;position:relative}.form-label{display:block;font-size:.9rem;font-weight:600;color:var(--dark);margin-bottom:8px}.input-group{position:relative}.input-icon{position:absolute;left:15px;top:50%;transform:translateY(-50%);color:var(--primary);font-size:1.1rem;width:20px;text-align:center;z-index:2}.form-input{width:100%;padding:14px 15px 14px 45px;border:2px solid #e0e0e0;border-radius:10px;font-size:1rem;color:var(--dark);background:var(--light);transition:all .3s ease}.form-input:focus{outline:0;border-color:var(--primary);box-shadow:0 0 0 3px rgba(76,175,80,.1)}.password-toggle{position:absolute;right:15px;top:50%;transform:translateY(-50%);background:0 0;border:none;color:var(--gray);cursor:pointer;padding:5px;font-size:1.1rem}.password-toggle:hover{color:var(--primary)}.role-selection{margin-bottom:25px}.role-label{font-size:.9rem;font-weight:600;color:var(--dark);margin-bottom:12px}.role-options{display:flex;gap:10px}.role-option{flex:1;padding:15px 10px;border:2px solid #e0e0e0;border-radius:10px;background:var(--light);text-align:center;cursor:pointer;transition:all .3s ease}.role-option:hover{border-color:var(--primary)}.role-option.selected{border-color:var(--primary);background:linear-gradient(135deg,rgba(76,175,80,.1) 0,rgba(33,150,243,.1) 100%)}.role-icon{font-size:1.4rem;margin-bottom:8px;color:var(--gray)}.role-option.selected .role-icon{color:var(--primary)}.role-name{font-size:.85rem;font-weight:600;color:var(--dark)}.remember-forgot{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}.remember-me{display:flex;align-items:center;gap:8px;font-size:.9rem;color:var(--dark)}.checkbox{width:18px;height:18px;border:2px solid var(--primary);border-radius:4px;cursor:pointer;position:relative}.checkbox.checked::after{content:'✓';position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:var(--primary);font-size:.9rem;font-weight:700}.forgot-password{font-size:.9rem;color:var(--primary);text-decoration:none;font-weight:500;transition:color .3s ease}.forgot-password:hover{color:var(--primary-dark)}.auth-button{width:100%;padding:16px;background:linear-gradient(135deg,var(--primary) 0,var(--secondary) 100%);color:var(--light);border:none;border-radius:10px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:10px}.auth-button:hover{transform:translateY(-2px);box-shadow:0 10px 20px rgba(76,175,80,.2)}.auth-button:active{transform:translateY(0)}.auth-button:disabled{opacity:.7;cursor:not-allowed;transform:none}.loading-spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-footer{text-align:center;margin-top:25px;padding-top:25px;border-top:1px solid #e0e0e0}.back-to-home{display:inline-flex;align-items:center;gap:8px;color:var(--primary);text-decoration:none;font-weight:500;font-size:.95rem;transition:color .3s ease}.back-to-home:hover{color:var(--primary-dark)}.toast{position:fixed;bottom:30px;right:30px;background:var(--light);border-radius:10px;padding:15px 20px;box-shadow:0 5px 20px rgba(0,0,0,.15);display:flex;align-items:center;gap:12px;transform:translateY(100px);opacity:0;transition:all .3s ease;z-index:1000;max-width:400px}.toast.show{transform:translateY(0);opacity:1}.toast.success{border-left:4px solid var(--success)}.toast.error{border-left:4px solid var(--danger)}.toast.warning{border-left:4px solid var(--warning)}.toast-icon{font-size:1.3rem}.toast.success .toast-icon{color:var(--success)}.toast.error .toast-icon{color:var(--danger)}.toast.warning .toast-icon{color:var(--warning)}@media (max-width:480px){body{padding:15px}.auth-container{max-width:100%}.auth-header{padding:60px 20px 35px}.auth-content{padding:25px 20px}.role-options{flex-direction:column}.toast{left:20px;right:20px;max-width:none;bottom:20px}}@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease forwards}