:root {
            --medical-blue: #007AFF;
            --doctor-blue: #0ea5e9; 
            --soft-bg: #F5F7FA;
        }
        body {
            font-family: 'Inter', sans-serif;
            background-color: var(--soft-bg);
            background-image: 
                radial-gradient(at 0% 0%, hsla(210,100%,98%,1) 0, transparent 50%), 
                radial-gradient(at 100% 100%, hsla(201,100%,94%,1) 0, transparent 50%);
        }
        .auth-card {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: saturate(180%) blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.7);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.03);
        }
        .input-field {
            background: rgba(245, 247, 250, 0.5);
            border: 1.5px solid transparent;
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .input-field:focus {
            background: white;
            border-color: var(--medical-blue);
            box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
        }
        .btn-doctor {
            background: #0ea5e9;
            transition: all 0.3s ease;
        }
        .btn-doctor:hover {
            background: #0284c7;
            transform: translateY(-1px);
            box-shadow: 0 10px 30px -5px rgba(14, 165, 233, 0.3);
        }
        .pulse-ring {
            position: relative;
        }
        .pulse-ring::before {
            content: '';
            position: absolute;
            width: 100%; height: 100%;
            background: #10B981;
            border-radius: 50%;
            animation: pulse 2s infinite;
            opacity: 0.4;
        }
        @keyframes pulse {
            0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
            100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }